CA1265169A - Servo-clamping device - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE
The present invention relates to an improved design of vise which is especially used to clamp irregular shaped work pieces and traditional work pieces. The vise includes two sets of movable clamping claws coupled and slided with a fixed jaw, and two sets of movable clamping claws coupled with a motion jaw, which are used to firmly clamp and hold the work piece.

Description

BACKGROUND ~F THE INVENTION:
The present invention has made reference to the following information of the published and granted patents:
U.S. Patent Nos. 113,656; 4,240,621; 171,868 French Patent No. 471,674 Austrian Patent No. 174,872 1. Analysis of U.S. Patent No. 113,656:
; A. Structural character is that:
a transverse back arc clamping cl`aw is placed from ~he front side to couple with the jaw which possesses an arc slot;
an arc slot of a clamping sheet at two sides is coupled with a pin at two sides of the jaw in order to prevent the work piece from falling down;
the work angle can be adjusted upward and downward with no special limitations.
B. Function: It is used to clamp l¢ngitudinal non-parallel work pieces.
C. Deect o the structure is that~
the method of placing a work piece from the front side must assemble clamping sheets h and h' and the pins at two sides;
~5 therefore, it needs many parts, and easily loosens and increases the ineffective space, the fragile parts are exposed outside to be collided and out of work; there is no design for limiting the upward facing angle, and when the clamp length of the clamping piece is shorter than radius H, it cannot tightly clamp the work pieces as shown in Figs.
A-l, A-2.

2. Analysis of U.S. Pa~ent No. 4,240,621:
A. The structural character is that:
it possesses a movable clamping claw 28 "~

and fixed jaw 26, both of them are oppositeand possess a spherical concave socket and contain a steel ball 36 in the middle;
due to the pulling join of springs 45, 46, it can make a universal slide to clamp the work piece.
B. Function: It is used to clamp a longi-tudinal or transverse non-parallel work piece.
C. Defect of the structure is that:
it only submits the design of the single set clamp, therefore it cannot pay attention to the auxilliary structure of sliding work piece away when the inclination angle is too long; there is no design of the mul~i-angular clamp for irregular-shaped work pieces.

3, Analysis of U~S. Patent No. 171,868:
A. Structural character is that:
it possesses a two-sectional fixed jaw, wherein its one section near the clamp surface can make angular slides;
one section near the clamp surface possesses an arc slot which joins with a pin on the fixed section, and between said two sections, there is an arc coupling surface.
B~ Function: It is used to clamp transverse non-parallel work pieces.
C. Defect of the structure is that:
the two sectional structure can make the body of the vise become longer;
two jaws the motion bodies which will affect the stability of itself after clamping.

4. Analysis of French Patent No. 471,674:

A~ Structural character is that:
it possesses a multi-set of a swing-type Y shaped arm;
each branch joint possesses a movable pin.
B. Function: it is used to clamp irreg?llar-shaped work pieces.
C. Defect of the structure is that:
the terminal clamping claw does not poss~ss any dir~ct rigid support surface, and its clamping strength is lower;
its structure i5 complicated;
the positions of four sets of support psints 11 are constant, and its application for clamping irregular-shaped work pieces is limited.

5. Analysis of Austrian Patent No. 174,872:
A. Structural character is that:
it possesses four sets oE movable clamping claws 5 which join with arc movable jaw 4 by pin 6i the distance between the clamping surface of movable clamping claw 5 and pin t is larger than radius of circular arc surface which is joined by blocks 5 and 4;
arc-type mo~a~le jaw 4 possesses an inclined surface which couples with fixed jaw 2 and motion jaw 2' and has no limitation structure and can be taken down freely;
as shown in Fig. 2, joint arc surfaces of movable clamping jaws 5 and 4 do not directly contact each other (as shown in the drawing by double dotted lines), B. Function: It is used to clamp irregular-shaped work pieces.
C. Defect of the structure is that:
the distance between the clamping surface of clamping claw 5 and pin 6 i5 larger tha~ the radius of the circular arc, and ~he range which is suitable for work pieces i5 limited (as shown in S Figs. B~l, B-2, B-3, B-4);
arc-type movable jaw 4 has not been fixed yet, and will fall down from the front side (as shown in Fig. C-l);
it possesses plural safety points (as shown in Figs. D-l, D-2, D-3~ which will cause the balance of the working table unstable and make troubles when milling processing is mass-produced (as shown in Figs. D-4, D-4-1 r D-~ ~ D-5~1 ); movable - 15 clamping claws 5 and 4 are joined by pin 6, and the circular arc surface does not rigidly couple with claw 4, and therefore the clamping force is limited.
Therefore, the present invention is a structure of vise which is designed to overcome or at least minimize the above defects. It is characterized in that:
at least one of the two sets of corresponding clamp jaws possesses a stably ~ransverse directrix; the stably ~ransverse directrix includes a line which is constituted by the line of claw surface of plate-type clamping used for fixing posi~ion; or at least two sets of movable clamp jaws which have a metacentre respectively.
Therefore, the present invention can solve the problems and defects of each of the above cited references and keep the original merits while possessing further merits. Summing up the above character-istics, its combination includes the .

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following types: it is constituted by two sets of corresponding clamp jaws which respectively possess two sets of movable jaws; it constitutes two sets of corresponding clamp jaws wherein one set can swing or move to face upward; two - parts of the clamping structure are constituted by two sets of jaws which possessthe plate-type clamping claw, wherein one set can swing or move to face upward; it is constituted by two sets of corresponding clamp jaws wherein one set possesses the plate-type clamping claw and the other set possesses two sets of the movable clamping claw; it is constituted by two sets of corresponding clamp jaws in which one set possesses the plate-type clamping claw and the other set possesses two sets of the movable clamping claw, wherein one jaw can swing or move to face upward; it also possesses other similar functional combinations.
The above-mentioned combinations and various novel movable clamping claw structure, swinging and facing upward jaw structure, fixing and locking structure of the movable clamping jaw, driving structure, vice base and auxiliary device are combined to constitute the present vise design.
The present invention resides in a vise in which at least one jaw is provided with two rotatable gxipping claws, each claw having a front grippins surface for gripping a work piece and a load-transmitting surface lying on a surface of revolutionr with at least the major portion of the front gripping surface being contained within this surface o:~

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` revolution.
The invention therefore relates to a device in which at least one ~aw is provided with two rotatable S gripping claws, each alaw having a front gripping surface for gripping a work piece and a load-transmitting sur~ace lying on a surface of revolution, with at leact the major portion of the front gripping surface being contained within this surface of revolution, the vise : 10 including means for limiting the rotational movement oE
: the claws and wherein at least one of the claws is formed of sections hinged together.
The invention further relate~ to a clamping apparatus, comprising a pair of vise jaws supported on a co~mon base, at least one of the vise ~aws being movable and at least one of which belng fixed, each of the vise jaws having a pair of concave recesses formed therein laterally of each other, a clamping member in each of the recesses and having a convex surface substantially complementary to the respective concave recesses the concave recesses and convex surfaces being formed ahout a vertical axis, wherein, in a cross-sectional plane substantially at right angles to the respective axes, each axis forms the center of a circle substantially defining the respective concave reces6es and convex surfaces, means for supporting each clamping member for pivotable movement about its respective vertical axis, and each of the clamping members having a plurality of substantially-flat chordal faces intersecting one another and disposed oppositely of the oonvex surface on the respective clamping member, the chordal faces on one pair of clamping members on a respective vise jaw confronting the chordal faces on the other pair of clamping members on the other respective vice jaw, thereby engaging and securely retaining a work piece between the respective ` -6a-vise jaws, threaded rod means for moving the vise jaws towards and away from one another, the threaded rod means having a firs-t portion threaded in a first direction and a second portion threaded in a second direction, internally threaded nut means threaded in a first direction, the nut means receiving the first portion of the threaded rod means, either the movable jaw or the fixed jaw having internal threads threaded in a second direction for receiving the second portion of the threaded rod means and for advancing the threaded rod means through the 15 jaw, resilient friction ring means in frictional contact with the internally threaded nut means, the friction ring means for permitting the first portion of the threaded rod means to rotate within and advance through the i.nternally threaded nut means when the movable jaw advances toward the fixed jaw prior to contacting the work piece, and the friction ring means for permitting the first portion of the threaded rod : means to cause the nut means to rotate with the threaded rod means when the movable jaw is in contact with the work piece.
The invention still further relates to a servo-clamping device comprising a generally rectangular base having a pair o~ end portions, a first upstanding flange formed integrally with the base at one end portion thereof, a second upstanding flange formed integrally with the base at the other end thereof and constituting a fixed vise jaw, the base having a slide-way formed therein substantially longitudinally thereof, a movable vise jaw slidably received within the slide-way, ..~

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-6b-threaded rod r.1eans for moving the vise jaws towards and away from one another, the threaded rod means havi.ng a first portion threaded in a first direction and a second por-tion threaded in a second direction, the threaded rod carried by the movable vise -Jaw ancl ex~nding through a cooporatin~ thr~aded r~c~ss in the first upstanding flange at the one end portion of the ~ase, ~he second upstanding flange at the other end of the base having a first pair of spaced-apart concavely-formed vertically-extending seats, the movable vise jaw having a second pair of spaced-apart concavely-formed vertically-extending seats substantially opposite to the respective seats in tha irst pair of seats in the fixed vise jaw, internally thxeaded nut means threaded in a first direction, the nut means receiving the first portion of the threaded rod means, ; either the movable jaw or the fixed jaw having internal threads threaded in a second direction for receiving the second portion of the threaded rod means and for advancing the threaded rod means through ~he jaw, resilient friction ring means in frictional contact with the internally threaded nut means, the friction ring means for permitting the first portion of the threaded rod maans to rotate within and advance through the internally thraaded nut means when the movable jaw advances toward the fixed jaw prior to contacting the work piece, and the friction ring means for permitting the first portion of the threaded rod means to cause the nut means to rotate with the threadad rod means when the movable jaw is in contact with the work piece, a substantially cylindrical upstanding clamping jaw received within each of the seats in each pair of ~ZG5~
-6c-seats, each clamping jaw having a convexly-formed surface complementary to its re~pective concavely-formed seat, means for plvotably mountlng each clamping jàw on the base for .i~ndependen~ pivotal movement, and each clamping jaw having at least one pair of vertically-truncated adjacent flat surfaces for clamping against a work piece inserted between the jaws, wherein the jaws pivot independently and are adapted to clamp an irregularly-shaped work piece.
The invention still further relates to a clamping apparatus a pair of vise jaws supported on a common base, at least one of the vise jaws being movable and at least one of which being fixed, 15threaded rod means for moving the vise jaws towards and away from one another, the threaded rod means having a first portion threaded in a first direction and a second portion threaded in a second direction, wherein one threaded portion of the threaded rod is in engagement with a stationary structure of the clamping apparatus and wherein the other threaded portion of the threaded rod is in engagement with a movable structure of the clamping apparatuj, internally threaded nut means threaded in a first direction, the nut means receiving the first portion of the threaded rod means, ; either the movable jaw or the fixed jaw having internal threads threaded in a second direction for receiving the second portion of the threaded rod means and for advancing the threaded rod means through the ~aw, resilient friction ring means in frictional :contact with the internally threaded nut means, the friction riny means for permitting the first portion of 3~ the threaded rod means to rotate within and advance through the internally threaded nut means when the I

-6d-movable jaw advances toward the ~lxed jaw prior to contacting the work piece, and the friction ring means for permitting the first portion of the threaded rod means to cause -the nut means to rotate with the threaded rod means when the mova~le jaw is in contact with the work piece.
In still a further aspect of -the present invention, a clamping device is provided wherein a pair of clamping jaw groups are mounted on a base, wherein one of the clamping jaw groups is movable in a direction towards and away from the other clamping jaw group to clamp a workpiece therebetween, and wherein at least the other of the clamping jaw groups includes a pair of movable clamping jaws arranged laterally of one another, the improvement comprising each movable clamping jaw being multi-layered and including at least a pair of moveable clamping claws spaced vertically of one another, ~ the base of the clamping device having an upwardly-; 20 extending base member, and means for mounting each movable clamping claw in the multi-layered movable clamping jaw in the other of the clamping jaw groups for pivotal movement on the base, the mounting means including a post extending upwardly from the base of the clamping device, each movable clamping claw having a central hole for receiving the post, each movable clamping claw including a rear~ard portion having a substantially semi-circular plan outline, ths upwardly-extending base member having a pair of vertically-spaced substantially semi-circular channels formed therein for receiving the respective semi-circular rearward portions of the movable clamping claws, respectively, each of the movable clamping claws further having a forward multi-faceted portion including at least a pair of planar clamping faces arranged transversely of one another, and a non-movable supporting ring member interposed between '~.

-6e-the palr of ~ovable al~mping claws, th~ supporting ring member having a central hole formed therein for receiving th~ post, ths supporting ring m~mber further having a 5 f orward portion extending substantially inwardly of the multi-face~d planar faces o~ th~ r~spective movable cla mpl ng claws, and -the suppor~ing riny m~mber still further having a rearward portion pro~ided w~th a ~lat edge fox bearing against the upwardly-extending base member between the channels formed therein Fig. 1 shows an embodiment of the vise which is constituted by four sets of movable clamping claws.
Fig. l-l is a top view of Fig. l.
Fig. 1-2 is a sectional view of Fig. l.
Fig, 1-3 is a diagram showing constructed details of the vise of Fig. l.
Figs. 1-4 through 1-12 illustrate embodiments of the vise clamping various irregular working pieces.
Fig. 2 is a perspective graphic view of clamping claw as shown in Fig. 1.
Fig. 2-1 is a perspective graphic view of a clamping claw as shown in Fig. 2 which possesses a concave arcuate front side.
Fig. 2-2 is a perspective graphic view of a clamping claw in which its back is in the form of a polygonal discontinuous arc.
Fig. 2-3 is a graphic view of a clamping claw as shown in Fig. 2 wherein one of the clamping surfaces' two sides is in the form of a concave arc, while another side i5 -tooth-shaped.
Fig. 2-4 is a graphic view of a clamping claw as shown in Fig. 2 wherein the clamping surface at one side is in the shape oE a concave arc.

_fif_ Fig. 2-5 ls ~ graphic view oE a semi-circular clamping claw which possesses a cutting anyular clamping surface at the side near another clamping claw oE the same side.
Fig. 2-6 i5 a top view of a semi-circular clamping claw which is processed by bending a metallic plate.
Fig. 2-7 is a persp~ctive graphic view of Fig. 2-6.
Fig. 2-8 is a top view of a semi-circular clamping claw which is processed by bending a metallic ' ~

plate and possesses a round hole in the middle part and has three clamping surfaces.
Fig. 2-9 is a perspective graphic view of Fig. 2-8.
Figl 2-10 is a top view of a clamping claw with a kind of special curved clamping surface.
Fig. 2-11 is a perspective graphic view of Fig. 2-10.
Fig. 2-12 is a top view of a clamping claw which possesses a clamping sheet at two sides to lock different material.
Fig. 2-13 is a perspective graphic view of Fig. 2-12.
Fig. 2-14 is a top view of a clamping claw which can change different material or sur~ace of the claw at its front side.
Fig. 2-15 is a perspective segmental view of Fig. 2-14, Fig. 2-16 is another embodiment of replacing the - clamping block as shown in Fig. 2-15.
Fig. 2-17 is a graphic view of a cylindrical clamping claw which possesses various clamping surfaces and with a coupling hole in it.
Fig. 2-18 is a graphic view of a clamping claw similar to that shown in Fig. 2-17 in which its bottom and upper part have a column projecting therefrom.
Fig~ 2-19 is a perspective graphic view of a laminated cylindrical clamping claw.
Fig. 2-20 is a graphic view of a laminated cylindrical claw with stable laminate.
Fig, 2-21 is a perspective graphic view of a universally rotatable multi~face clamping claw within which is positioned a spherical axial column.
Fig. 2-22 is a perspective graphic view of a movable clamping claw which projects upward in the middle part.
Fig, 2-23 is a perspective graphic view of a movable clamping claw in which its middle part is a double side concentric circular arc structure.

~2~ '.S3 Fig. 2-24 is a perspective graphic view of a two-sectional universal clamping claw.
Fig. 2-25 is a graphic view OI a two-sectional u~iversal clamping claw which possesses S bearing set and is set by ri~ged groo~e.
Fig. 2-26 is a perspective graphic view of a two-sectional universal clamping claw which can be universally adjusted by cross joint.
Fig. 2-27 is a structural graphic view of a jaw coupled with a spherical column and universal mo~able clamping claw which can be tightly set and fixed.
Fig. 2-28 is a perspective graphic view of a magnetic coupling clamping claw with an arc surface at the back.
Fig. 2-29 is a perspective graphic view of a magnetic coupling clamping claw with a spherical surface at the back.
Fig. 2-30 is a perspective graphic view of a movable clamping claw which possesses a locking hole in the center.
Fig. 2-31 is a perspective graphic view of a movable clamping claw wherein the non-adjacent side of the clamping surface extends across a section of a plate clamping claw.
Fig. 2-32 is an embodiment of a connecting two-piece type semi-circular clamping claw.
Fig. 2-33 is a three-sectional embodiment of a connecting type semi-circular clamping claw.
Fig. 2-34 is a structural graphic view of a foldable multi-sectional type plate clamping claw.
Fig. 2-35 is a structural embodiment of a vise mixed by an inward bended plate type clamping claw and movable clamping claw.
Fig~ 2-36 is a structural embodiment of a rabbeted type movable clamping claw.

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Fig. 2-37 is a structural embodlment of an au~iliary jaw and movable coupling claw which can make side displacement and elevational angular adjustment.
Fig. 2-38 is a perspective graphic view of the structure of a double independent dxi~e and rotatable motion jaw.
Fig. 3 is an embodiment of a vise joined by a polygonal discontinuous a~c socket and arc 13 back mo~able clamping claw.
Fig. 3-1 is a top elevational view of Fig. 3.
Fig. 3-2 is a cross-sectional view of Fig. 3.
Fig. 4 is a graphic view of structure in which the - back o~ a clamping claw possesses an arc groove in order to reduce loss of friction.
Fig. 5 is a structural embodiment of a clamping claw which possesses an inclined conic back and concave ring.
Fig. 5-1 is an exploded view of the clamping claw as shown in Yig. 5.
Fig. 5-2 is a cross-sectional view of Fig. 5.
Fig. 6 is a structural embodiment of a clamping claw which possesses an inclined conic back and flang~.
Fig. 6-1 is an exploded view of the clamping claw of Fig. 6.
Fig. 6-2 ls a side cross-sectional view o the clamping claw illustrated in Fig. 6.
Fig. 7 is a perspective graphic view of structure joined with the jaw seat by a threaded support column of the clamping claw.
Fig. 7-1 is a partially side cross-sectional viPw of Fig. 7~
Fig. 8 illustrates a structural embodiment of the vise o~ined with a clampiny claw possessing various clamping sufaces and having a coupling ~G51~'r3 hole in it.
Fig. 8-1 is a top view of the Structural embodiment illustrated in Fig. 8.
Fig. 8-2 is a side cross-sectional view of the structural embodiment illustrated in Fig. 8.
Fig. 9 shows, in a partial exploded perspective view, an embodiment of the vise which possesses various clamping surfaces and coupling structure of a central projected axial column and jaw seat.
Fig. 9~1 is a top view of Fig. 9.
Fig. 9-2 is a side cross-sectional view of Fig. 9~
Fig. 10 is a partial exploded perspective vlew of a ~ structural embodiment of the vise combined with a laminated cylindrical clamping claw.
Fig. 10-1 is a top view of the embodiment as shown in Fig. 10.
Fig. 10-2 is a side cross-sectional view of the embodiment as shown in Fig. 10.
20 Fig. 11 is a partial exploded perspective view of an embodiment of a laminated movable clamping claw set with stable laminate applied on the vise~
Fig. 11-1 is a top view of FigO 11, Fig. 11-2 i5 a side cross-sectional view of Fig. 11.
Fig~ 12 illustrates, in a partial exploded perspective view, an embodiment of a clamping claw set applied on a vise possessing a spherical axial column and which can make universal swinging adjustment.
Fig. 12-1 is a top view of Fig. 12~
Fig. 12-2 is a side cross-sectional view of the embodiment illustrated in FigO 12.
Fig. 13 is a partial exploded perspective view of an embodiment of a clamping claw set applied on a vise in which its middle part projects upward and can make universal rotation.

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Fig. 13-1 is a top view of Flg. 13.
Fig. 13-2 is a side cross-sectional view of Fig. 13 Fig. 14 is a partial exploded perspective view o~
an embodiment of a universal rotary clamping claw set applied on a vise on which its middle part is a concentric spherical surface circular arc~
Fig. 14-1 is a top view of the embodiment as shown in Fig. 14.
Fig. 14-2 is a side cross-sectional view of the embodiment as shown in Fig. 14.
Fig. 15 is an embodiment of a screw coupled type two-sectional universal clamping claw set applied on a vise.
Fig. 15-1 is a top view of Fig. 15.
Fig. 15-2 is a side cross-sectional view of Fig. 15.
Fig. 16 is an embodiment of a two-sectional type universal clamping claw set with a bearing applied on a vise.
Fig. 16-1 i~ a top view of Fig. 16.
Fig. 16-2 is a side cross-sectional view of Fig. 16.
Fig. 17 is an embodiment of a cross joint type two sectional universal clamping claw set applied on the vise.
Fig. 17 l is a top view of Fig. 17.
Fig. 17-2 is a side cross-sectional view of Fig. 17.
Fig. 18 is an elevational view of the embodiment of a spherical column coupling type movable clamping claw set applied on the vise.
Fig. 18-1 is a side cross- sectional view of Fig. 18.
Fig. 19 is a psrspective graphic view of a spherical column coupling type movable clamping claw with exploded groove.
Fig. 19-1 is a top view of a spherical column coupling type movable clamping claw set with exploded groove.
Fig. 20 is a reference embodiment of a table vise as 6~

shown in Fig. 18.
Fig. 20~1 is a top view of Fig. 20.
Fig. 20-2 is a side cross-sectional view of Fig. 20.
Fig. 20-3 is a front partial cross-sectional view of Fig. 20.
Fig. 21 is an embodiment of a magnetic bar coupling type clamping claw set with arc surface on back applied on a table vise.
Fig. 21-1 is a top view of Fig. 21.
Fig. 21-2 is a side cross-sectional view of Fig. 21.
Fig. 21-3 is a front partial cross sectional view of Fig~ 21.
Fig. 22 is an embodiment of a magnetic coupling type - clamping claw with an arcuate surface on the back and jaw seat.
Fig. 22-1 is a cross-sectional view of Fig. 22.
Fig~ 23 illustrates an embodiment of joining the magnetic coupling type clamping claw with a spherical surface on the back and a jaw seat.
Fig. 23-1 is a cross-sectional view of Fig. 23.
Fig. 24 is a stable origin clamping embodiment of a locking clamping claw.
Figs. 24-1 and 24~2 show unstable clamping embodiments of an unlocked clamping clawO
Fig. 25 is a partial exploded perspective view of an embodiment of a clamping claw which is locked by a central screw.
Fig. 25-1 is a top view of Fig. 25.
Fig. 25-2 is a side cross sectional view of Fig. 25.
Fig. 26 is a structural graphic view of a ~aw double parallel rod type guide rail equipped with an anti-sliding pin at arc type opening side of the jaw back.
Fig. 26~1 is a top view of Fig. 26.
Fig. 26 2 is a side cross-sectional view of Fig. 26.
Fig. 26-3 is a middle cross-sectional view of Fig. 26.

Fig. 27 is a structural graphic view of a double parallel rod type guide rail equipped with an arc type sealed transverse groove at the back of the jaw.
Fig. 27-1 is a top view of Fig. 27.
Fig. 27-2 is a side cross-sectional view of Fig. 27.
E'ig. 27-3 is a middle cross-sectional view of Fig. 27.
Figs. 27-4 through 27-7 illustrate exemplary embodiments of the structure illustrated in Fig. 27, and particularly showing the structure of the clamping claw locking hole.
E`ig. 28 illustrates a failure example of side clamping - of a work piece which is smaller than the radius of the movable clamping claw.
Fig. 29 is an embodiment of a clamping claw which is locked by a setting pin to couple the clamp-ing claw and pin hole of the jaw.
Fig. 29-1 i5 a top view of Fig. 29.
Fig. 29-2 is a side cross-sectional view of Fig. 29.
Fig. 30 shows an exemplary embodiment of the central plug of two movable clamping claws effecting parallel locking.
Fig. 30-1 is a top view of the embodiment illustrated in Fig. 30.
Fig. 31 is an embodiment of a mixing arc back clamping claw and multi-surface back clamping claw to couple with a ~ocket with multi-surface back.
Fig. 31-1 is a top view of Fig. 31.
Fig~ 31-2 is a side cross-sectional view of Fig. 31.
Fig. 32 is an embodiment of a mo~able clamping claw wherein its outside extends to a plate type clamping claw which is flush with the clamping surface of the movable claw.
Fig. 32 1 is a top view of Fig. 32.
Fig. 32-2 is a side cross-sectional view of Fig. 32.
Fig. 32-3 is a front partial cross-sectional view of ~y.

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Fig. 32.
Fig. 32 4 is a perspective graphic view of a movable clamping claw as shown in Fig. 32 which is integral.
5 Fig. 32-5 is a perspective graphic view of a clamping claw which is joined by a semi-circular clamping claw and a plate typP clamping claw which is broader than the surface of -~he clamping claw slightly forward to the outside.
Figs. 32-6, 32-7 and 32-8 illustrate applied examples of Fig. 32.
Fig. 33 is an embodiment of a fixed jaw and support _ jaw, wherein at two sides of both of them there is respectively included an independently placed plate type clamping claw and in the middle, there are included four sets of movable clamping claw with a circular arc at the back.
Fig. 33-1 is a top view of Fig. 33.
Fig. 33-2 is a side cross-sectional view of Fig. 33.
Fig, 33-3 is a front partial crois-sectional view of Fig. 33-Fig. 34 illustrates an embodiment which possesses four sets of movable clamping claws and at one side, there is a plate type clamping claw.
Fig~ 34-1 is a top view of Fig. 34.
Fig. 35 is an embodiment which possesses a set of inward bended plate type clamping claws and a single set of movable clamping claws.
Fig. 35-l is a top view of the embodiment illustrated in Fig. 35.
Fig. 36 is a structural graphic view of a jaw wherein at its two sides, there are inward bended plate type clamping claws to be assembled at the same jaw with a single set of mo~able clamping claws.

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~L;~ .9 Fig. 36-l is a top view of Fig~ 36.
Fig. 37 is a structural embodiment o~ a rabbeted -type movable clamping claw coupled with a multi-sectional combined type plate clampirlg claw.
Fig. 37-1 is an app]ied example o~ Fig. 37.
Fig. 38 is an embodiment of a movable clamping claw which uses a transverse rod to lock and set plate clamping structure.
Fig. 38-1 is a top view of Fig. 38.
Fig~ 38-2 is a side cross-sectional view of Fig. 38.
Fig. 39 is an embodiment of structure which uses a U-shaped locking pin to set and lock the movable clamping claw.
- Fig. 39-1 is a top view of Fig. 39.
Fig. 39-2 is a side cross-sectional view of Fig. 39.
Fig. 40 is a graphic view of structure which possesses proper cutting near side of semi-circular clamping claw to interfere with each other to limit the angle.
Figs. 40-1 and 40-2 illustrate the applied embodiment of Fig. 40.
Fig~ 41 is an embodiment of the structure of a middle connecting two-sectional type semi-circular clamping claw, Fig~ 41-1 is a cross-sectional view of Fig. 41.
Fig. 42 is an embodiment of the structure of a two-sectional type semi-circular clamping claw possessing a limit cur~ed angle.
Fig. 43 illustrates a structure of a connecting type three-sectional semi-circular clamping claw.
Fig~ 43-1 is a cross~sectional view of Fig~ 43.
Fig. 44 is an embodiment of a three-sectional type semi-circular clamping claw possessing a limit curved angle.
Fig. 45 is an embodiment of structure of a middle connecting two-sectional type plate clamping claw.

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~ 16 -Fig. 45-1 is a cross-sectional view of Fig. 45.
Fig. 46 is an embodiment of a two-sectional type plate clamping claw which possesses a mutually extending limit structure.
Fig. 46-l is a cross-sectional view of the embodiment as shown in Fig. 46.
Fig. 46-2 is an embodiment of a Y-shaped jaw which possesses transverse line arc jaw surface structure at two sides.
Fig. 46-3 is a cross-sectional view of Fig. 46-2.
Fig. 46-4 is an example of clamping work of Fig. 46-2.
Fig. 47 is an embodiment of structure of a connecting type three-sectional plate ~ clamping claw.
Fig. 48 is an embodiment of three sets of plate clamping claws.
Fig. 48-1 is a cross-sectional view of Fig. 48~
Fig. 49 is an embodiment of a motion jaw which assembles transverse displacement auxiliary jaw rabbeted into the coupling structure by dovetail groove.
Fig. 49-1 is a top view of Fig~ 49.
Fig. 49-2 is a side cross-sectional view of Fig. 49.
Fig. 49 3 is a structural graphic view of an auxiliary jaw which possesses a ladder type back for transverse parallel groove of motion jaw to rabbet.
Fig. 49-4 is a side cross-sectional view of Fig. 49-3.
Fig. 49-5 illustrates a working example of a vise in which its irregular contour is rectangular.
Fig. 49-6 is an improved clamping working example of Fig. 49-5.
Fig. 50 is a graphic view of a motion jaw which assembles a rotatable auxiliary jaw, wherein there is arc coupling structure between them.
Fig. 50-1 is a top view of Fig. 50.
Fig~ 50-2 is a side cross-sectional view of Fig. 50.

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~ 17 -Fig. 50-3 is a structural embodiment of a motion jaw which possesses a concave transverse arc groove to couple with a rotatable auxiliary jaw.
Fig. 50-4 is a side cross-sectional view of Fig. 5~.
Figs.50-5 and 50-6 show the jaws of this embodiment closing in on an irregularly shaped work piece.
Fig. S1 lS a perspective graphic view of an embodiment of the invention showing a round 51iding column which couples with a guide rail and enables the motion jaw to rotate.
Fig. 51-1 is an exploded view of the bottom structure of the motion jaw of the embodiment of Fig. 51.
Fig. 51-2 is a top view thereof.
Fig. 51-3 is a side cross-sectional view thereof.
Fig. 51-4 is a front cross-sectional view thereof.
Fig. 52 is a segmentally structural view of a separate type parallel coupling sliding block with a circular central column, and the bottom of the motion jaw.
Fig. 52-1 is a top elevational graphic view of Fig. 52.
Fig. 52-2 is a side cross-sectional view of Fig. 52.
Fig. 52-3 is a graphic view of the joint method of Fig. 52 which is locked by a xetaining ring.
Fig. 52-4 is a graphic view of the join~ method of Fig. 52 which is locked by a screw to screw hole at the terminal end of a cylinder.
Fig. 53 is a structurally perspective segmental view of a motion jaw which possesses a central column at bottom to couple with a central hole of a parallel sliding block.
Fig. 53~ a top elevational graphic view of Fig~ 53.
Fig. 53-2 is a side cross sectional view of Fig. 53.
3~ Fig. 54 is a graphic view of a motion jaw in which its bottom is I shaped tubular (or bar type) parallel rod type guide rail structure.

.
.~

Fig. 54-l is a top view of Fig. 54.
Fig. 54-2 is a side cross-sectional view of Fig. 54.
Fig. 54-3 is a front cross-sectional view of Fig. 54.
Fig. 54-4 i5 an embodiment of a square guide rail.
5 Fig. 55 is an embodiment of a traditional plate type clamping claw which can swing to clamp parallel and non-parallel working pieces.
Fig. 55-1 is a top view of Fig. 550 Fig. 55-2 is a side cross-sectional view of Fig. 55.
10 Fig. 55-3 is a front cross-sectional view of Fig. 55.
Fig~ 56 i5 a graphic view of a motion jaw wherein the base of the motion jaw possesses parallel rod type guide rail structure with a transv~rse - parallel grooYed hole.
15 Fig. 56-1 is a front cross-sectional view of Fig. 56.
Fig. 57 is a graphic view of a parallel rod type guide rail in which each set of guide rails independently engaging a sealed transverse parallel grooved hole.
20 Fig. 57-1 is a front view of Fig. 57.
Fig. 58 is a graphic view of a motion jaw wherein its bottom possesses single-piece guide rail structure with a transverse parallel grooved hole.
~5 Fig. 58-1 is a front cross-sectional view of Fig. 58.
Fig. 59 illustrates a structure of the motion jaw, its bottom possessing a parallel groove to cover bottom downward and including a gap.
Fig. 59~1 is a front cross-sectional view of Fig. 59.
30 Fig. 60 is a graphic view of an embodiment of a motion jaw of a plate type clamping claw possessing a stable plug.
Fig. 60-1 is a top view of Fig. 600 Fig. 60-2 is a side cross-sectional view of Fig. 60.
35 Fig. 60-3 is a front elevational view of Fig. 60.
Fig. 61 is a graphic view o~ an embodiment of the motion jaw of a movable clamping claw ~is ,,f ' ';3 possessing a sta~le plug.
Fig. 61-1 iS a top view of Fig. 61.
Fig. 61 2 iS a side cross-sectional view of Fig. 61.
Figs. 62-62-3 are three-dimensional irregular working pieces.
Fig. 63 is a graphic view of an-intersecting rabbeted arm structure which is respectively placed between the sliding rail and the motion jaw and its middle part projects and its front and rear parts contract upward.
Fig. Ç3-1 is a cross-sectional view of the sliding block as shown in Fi~. 63 which is of round shape.
- Fig. 63-2 is a cross-sectional view of the sliding block as shown in Fig. 63 which is parallel.
Fig. 63-3 is an exploded view of a round sliding block as in Fig. 63.
Fig. 63-4 is an exploded view of a parallel sliding block as shown in Fig. 63.
Fi~s. 64-64~4 illustrate the embodiments of structure as shown in Fig. 63 applied on a plate type clamping claw.
Fig. 65 illustrates an embodiment of structure as shown in Fig. 64 further possessing a limited elevational angle.
Fig. 65~1 is an exploded view of a sliding block of Fig. 65 which is round.
Fig. 65-2 is a cross-sectional view of a sliding block of Fig. 65 which is parallel.
Fig. 65-3 i9 an exploded view of structure of a round sliding block as shown in Fig. 63.
Fig. 65-4 is an exploded view of structure of a parallel sliding block as shown in Fig. 63 Figs. 66-66-4 illustrate the embodiments of structure as .~, 1~

shown in Fig. 65 applied on a plate type clamping claw.
Fig. 67 is an exploded perspective view of an embodiment of a motio~ jaw which possesses S spherical joint structure at the base and can make universal adjustment~
Fig. 67-1 is a side cross-sectional view of Fig. 67.
Fig. 68 is a structural graphic view oE an elevationally movable auxiliary jaw which possesses an arc cylinder at the back.
Fig. 68-1 is a top view of ~ig. 68.
Fig. 68-2 is a side cross-sectional view of Fig. 68.
Fig. 69 is an embodiment as shown in Fig. 68 which - further possesses a circular coupling block.
Fig. 69-1 is a top view of Fig. 69.
Fig. 69-2 is a side cross-sectional view of Fig. 69, Fig. 70 illustrates an embodiment of structure combining a fixed jaw which possesses a plate type clamping claw and a motion j~w which possesses a movable clamping claw.
Fig. 70-1 is a top view of Fig. 70.
Fig. 70-2 is a side cross-sectional view of Fig. 70.
Fig. 70-3 is a front cross-sectional view of Fig. 70.
Fig. 71 illustrates an embodiment which possesses a motion jaw with a universal adjustable jaw seat, and wherein there is a movable clamping claw, and a fixed jaw with a plate type clamping claw.
Fig. 71-1 is a top view of Fig. 71.
Fig. 71-2 is a side cross-sectional view of Fig. 71.
Fig. 72 illustrates an embodiment of a fixed jaw with a movable clamping claw, and a motion jaw with a plate type fixed clamping claw.
Fig, 72-1 is a top view of Fig. 72.
Fig. 72 2 is a side cross-sec~ional view of Fig. 72.
FigO 73 is a structural graphic view of a motion jaw with a movable clamping claw, and a fixed jaw

7;~
~f which is a rotatable mechanism and on which there is a plate type clamping claw.
Fig. 73-1 is a top view of Fig. 73.
Fig. 73-2 is a side cxoss-sectional view of E'ig. 73.
Fig. 74 shows an embodiment of a motion jaw with a plate type clamping claw and a fixed jaw which is rotatable, and possesses a movable clamping claw.
Fig. 74-1 is a top view of Fig. 74.
Fig. 74~2 is a side cross-seetional view of Fig. 74.
Fig. 75 is a graphic view of strueture of a motion jaw with two sets of movable clamping claws and a fixed jaw with a single set of movable clamping claws.
Fig. 75-1 is a top view of Fig. 75.
Fig. 75-2 is a side cross-sectional view of Fig. 75.
Fig. 76 is a graphic view of structure of a fixed jaw with two sets of movable elamping claws, and a motion jaw which couples with two rows of guide rails and can swing, and possesses a plate type clamping elaw with obliquity.
Fig. 76-1 is a top view of Fig. 76.
Fig. 76-2 is a side cross-sectional view of Fig. 76.
Fig. 77 is a graphic view of structure of a fixed jaw with a plate type elamping claw, and a motion jaw possessing an arc socket, on which there are two sets of movable clamping claws.
Fig. 77-1 is a top view of Fig. 77~
Fig. 77-2 is a side eross-seetional view of Fig. 77.
Fig. 77-3 is a front view of Fig. 77.
Fig. 77-4 iæ a graphic view of an embodiment with a double-sided middle sliding jaw.
Fig. 77-5 is a side eross~sectional view of Fig. 77-4.
Figc 77-6 is a graphie view of an embodiment of parallel lead serew type guide rail with a double-sided middle sliding jaw.
Fig. 77-7 is a side cross-sectional view of Fig. 77-6.

Fig. 77-8 is a graphic view of an embodiment of structure with a multi-set middle double-sided sliding jaw.
Fig. 77-9 is a side cross-sectional view of Fig. 77-8 S Fig. 78 is a graphic view of structure of a fixed jaw and twc sets of independent driving motion iawsl on which there are two sets of movable clamping claws or plate type clamping claws.
Fig, 78-1 is a top view of Fig. 78.
Fig. 78-2 is a side cross-sectional view of Fig. 78 Fig. 78-3 is a front view of Fig. 78.
Fig. 78-4 illustrates an example of structure as shown in Fig. 78.
~ Fig. 79 illustrates an embodiment of structure as shown in Fig. 78 applied on a table vise.
Fig. 79-1 is a top view of Fig. 79.
Fig. 79-2 is a side cross-sectional view of Fig. 79.
Fig. 79-3 ls a front view of Fig. 79.
Fig. 80 is a graphic view of structure of a fixed jaw and motion jaw which have double independent drive and are rotatable.
Fig. 80-1 is a top view of Fig. 800 Fig. 80-2 is a side cross-sectional view of Fig. 80.
Fig. 80-3 is a front view of Fig. 80.
Fig. 81 illustrates an embodiment of structure of a motion jaw and fixed jaw in which both of them possess a single set of movable clamping claws, and at one side or two sides of vise tool seat, there assembles grooved type structure to rabbet stable block.
Fig~ 81-1 is a top view of Fig. 81.
Fig. 81-2 is a side view of Fig. 81 with stable block.
Fig. 81-3 is a front view of Fig. 81.
Fig. 81-4 is a cross-sectional view of Fig. 81.
3~ Fig~ 82 is a graphic view oE structure of a motion jaw and fixed jaw in which both of them possess a single set of movable clamping ~'."~.

- 23 ~
claws, and at the outside of the stable block on the vise tool seat, there is a sliding support arm.
Fig. 82-1 is a top view of Fig. 82.
Fig. 82-2 is a side cross-sectional view of Fig. 82.
Fig. 82-3 is a front view of Fig. 82.
Fig. ~3 is a graphic view of structures shown in Fig. 81, wherein grooved structure at side of tool seat assembles holes of setting and rabbeting for adjusting the position of stable block.
Fig. 83-1 is a top view of Fig. 83.
Fig. 83-2 is a side cross-sectional view of Fig. 83.
Fig. 84 is a graphic view o three-directional ~ clamping structure of a side clamping claw with side sliding guide rail.
Fig. 84-1 is a top view of Fig. 84.
Fig. 84-2 is a side view o Fig. 8~.
Fig. 84~3 is a front view of Fig. 84.
Fig. 85 is a graphic view of three-directional driving clamp structure in which its central axle is not intersected.
Fig. 85~1 is a side view of Fig. 85.
Fig. 85-2 illustrates a working example of Fig. 85.
Fig. 85~3 is an embodiment in which the central axle is intersected and it lacks a three-directional clamp.
Fig. 86 illustrates, in perspective view, an example of structure which adjusts the direction of the vise by joining long stripped arc adjusting surface with tool seat.
Fig. 86-1 is a side cross~sectional view of Fig. 8Ç.
Fig. 86-2 is a front cross-sectional view of F~g. 86.
Fig, 86-3 is a bottom view of Fig. 86.
Fig. 87 is a perspective view of an embodiment of the lowex tool seat fox horizontal and vertical locking.
FigO 87 1 is a side cross-sectional view of Fig. 87.

Fig. 87-2 is a front cross-sectional view of Fig. 87.
Fig. 87-3 is a bottom view of Fig~ 87.
Fig, 88 illustrates an embodiment of two locking surfaces in which the angle is adjustable.
5Fig. 88-1 is a side cross-sectional view of Fig. 88.
Fig. 88-2 is a front cross-sectional view of Fig . 88.
Fig. 88-3 is a rear view of FigO 88.
Fig. 88-4 shows a locking screw which posses~es an equilateral polygon in the middle section.
lQ Figs. 88-5 - 88-10 illustrate applied embodiments of Fig. 88.
Fig. 89 is a graphic view of structure which is combined with the vise and clamping seat and possesses a locking screw with a spherical head and can make universal adjustment by double incline.
Fig. 89-1 is a side cross-sectional view of the combination as shown in Fig. 89.
Fig. 89-2 is a back view of Fig. 89.
Figs. 89-3 - 89-6 are functional views of Fig. 890 Fig. 90 illustrates an embodiment in which the clamping seat possesses two-piece structure with adjustable angular incline and set angle by a polygonal hole as shown in Fig. 88.
Fig. 90-1 is a side cross-sectional view of Fig. 90.
FigO 90-Z is a top view of Fig. 90.
Fig. 91 illustrates an example of a vise seat which possesses universal adjusting structure with extended incline.
Fig. 91-1 is a top view of Fig. 91.
Fiy. 91-2 is a rear view of Fig. 91.
Fig. 92 illustrates an embodiment of universal adjustment in which between the fixed jaw and the miAdle seat, there additionally assembles auxiliary middle seat.
Fig. 92-1 is a top view of Fig. 92.

`~z~

Fig. 92-2 is a rear view of Fig. 92.
Fig. 93 illustrates an en~bodiment of structure as shown in Fig. 91, wherein the rotary coupling part is substituted by a polygonal hole and locking S screw in order to possess the function of settiny angle and locking.
Fig. 93-1 is a top view of Fig. 93.
Fig. 93~2 i5 a side cross-sectional view of Fig. 93.
Fig. 93-3 is a front view of Fig. 93.
Fig. 94 illustrates an embodiment of structure as shown in Fig. 92 wherein the rotary coupling part is substituted by a polygonal hole and locking screw in order to possess the unction of setting angle and locking.
Fig. 94-1 is a top view of Fig. 94.
FigL 94-2 is a side cross-sectional view of Fig. 94.
Fig. 94-3 is a front view of Fig. 94.
Fig. 95 illustrates an example of structure which can adjust height and make rotary adjustment.
`20 Fig. 95~1 is a top Yiew of the tool seat as shown in Fig. 95-Fig. 95-2 is a side view of the tool saat as shown in Fiy. 95.
Fig. 96 shows, in a exploded perspective view, an embodiment of the tool body as shown in Fig. 95 which is changed into a two-piece structure.
Fig. 96-1 is a side cross-sectional view of Fig. 96.
Fig. 96-2 is a bottom view of Fig. 96.
Fig. 97 is an exploded perspective view of an embodiment of structure o cylindrical coupling incline with ringed groove used as universal~adjusting structure which is placed in the ~ol body o a vise.
Fig. 97-1 is a side cross-sectional view of Fig. 97.
Fig. 97-2 is a bottom view of Fig. 97.
Fig. 98 is an e~ploded perspective view of an "~

embodiment of structure in which the vise with the function of forward and backward adjustment assembles a ~lexible base.
Fig. 98-1 is a side cross-sec~ional view of Fig. 98.
Fig. 98-2 is a bottom view.
Fig. 98-3 is a graphic view of the embodiment of the universal adjusting structure of the vise.
Fig, 98-4 is a side cross-sectional view of Fig. 98-3.
Fig. 99 is a structural example of the flexible base in which the ring-shaped adjusting structure is joined with the coupling seat as an integer.
Fig. 99-1 is a side cross-s ctional view of Fig. 99 when in the locked state.
Fig. 99-2 is a side cross~sectional view of Fig. 99 when in the released state.
Fig. 99-3 is a bottom view o Fig~ 99.
Fig. 100 i5 a side cross-sectional view of the embodiment in which the vise with the function of right-and-left, back and front adjustment assembles a 1exible base.
Fig. 100-1 is a front cross-sectional view of FigO lOOo Fig. lOl is a graphic view of double directional screw quick driving structure~
FigO 101-1 is a side cross-sectional view of Fig. 101.
Fig~ 101-2 is a front view of Fig. 101.
FigO 101-3 is a bottom view of Fig. 101.
Fig. 101-4 is a segmental combination view of Fig. 101.
Fig. 1~1-5 is an embodiment in which torque sliding structure is placed at the support arm.
Fig. 101-6 is a side cross-sectional view of Fig. 101-5.
Fig. 101-7 is a front view of Fig. 101-5. _ , Fig. 101-8 is a side view of the embodiment wherein the end of the lead screw coupled with the handle is smaller than the inner thread of the hole of the support arm.

~?

- 26~ -Fig. 101-9 is a front cross-sectional view of the embodime~t wherein the end of the lead screw coupled with the handle is smaller than the inner thread of the hole of the support arm.
Fig. 101-10 is a side view of the embodiment in which double directional threads possess different diameters.
Fig. 101-11 is a front cross-sectional view of the embodiment in which double directional threads possess different diameters.
Fig. 101 12 is a side view of the embodiment of two-sectional type lead screw structure.
Fig. 101-13 is a front cross-sectional view of two-~ sectional type lead screw structure.
Fig. 102 is a graphic view of the embodiment of a contour measurement vise with scale of shifting of the clamping claw and motion jaw.
Fig. 102-1 is a top view of Fig. 102.
Fig. 102-2 is a side view of Fig. 102.
Fig. 102-3 is a front view of Fig. 102.
Fig. 103 is a graphlc vi~w of the embodiment of a contour measurement vise with an elevational angular auxiliary jaw, and scale of shifting of the clamping claw and motion jaw.
Fig. 103~1 is a top view of Fig. 103.
Fig. 103~2 is a side view of Fig. 103.
Fig. 103-3 is a front view of Fig. 103.
Fig. 104 is a graphic view of the embodiment of a contour measurement vise with a right-and-left rotary motion jaw and scale of shifting of the clamping claw and motion jaw.
Fig. 104-1 is a top view of Fig~ 104~
Fig. 104 2 is a side view of Fig. 104.
Fig. 104-3 is a front view of Fig. 104.
Fig. 105 is a graphic view of an embodiment of a movable clamping clàw type of contour measurement vise which possesses a shifting ~i5~

- 26b -scale and is adjusted by incline.
Fig. 105-1 is a -top view of Fig. 105~
Fig. 105-2 is a side view of Fig. 105.
Fig. 105~3 is a front view of Fig. 105.
Fig. 106 is a graphic view of the embodiment of a detective type contour vise.
Fig. 106-1 is a top view of Fig. 106.
Fig. 106-2 is a side view of FigO 106.
Fig. 106-3 is a front view of Fig. 106.
Figs. 107-110 illustrate applied embodiments of a contour measurement vise.
ELEMENTS OF VISE:
1001 three-clamping surface claw with arc back.
1001' screw h~le on back of movable clamping claw.
1002 claming claw with concave arc front side.
1003 three-clamping surface clamping claw with multi-face arc.
1003' three-clamping surface clamping claw with multi-face arc.
1004 clamping claw with concave arc and toothed type clamping suxace.
1005 clamping claw with concave arc side.
1006 semi-circular clamping claw with side of cutting angular clamping surface.
1007 metallic plate semi-circular clamping claw.
1008 three clamping surface metallic plate clamping claw with round hole in the middle~
1009 clamping claw with special curve clamping surface.
1010 clamping claw with locking different material clamping sheet at two sides.
1011 replaceable clamping claw seat.

1012 replaceable three-clamping sur~ace clamping block.
1013 replaceable clamping block with toothed front side.
5 1014 fixing screw of clamping claw.
1015 cylindrical clamping claw having multi-clamping surface with coupling hole.
1016 clamping claw possessing multi-clamping sur~ace and a projected column in the center.
10 1017 laminated cylindrical clamping claw.
1018 stable laminate.
lOl9 circular axle with groove or arc gap.
1020 universal rotary multi-face clamping claw.
1021 spherical axial column.
15 1022 ring-shaped fixed plug.
1023 fixed screw of ring-shaped plug.
1025 fixed hole of ring-shaped plug.
1026 screw hole.
1027 universal rotary clamping claw with upward projected middle part.
1028 movable clamping claw with concentric circle arc middle part.
1029 screw~coupled type auxiliary jaw.
1030 threaded bolt of auxiliary jaw.
25 1031 screw hole on auxiliary jaw.
1032 screw-coupled type mova~le clamping claw.
1033 threaded bolt of movable clamping claw.
1034 clamping claw auxiliary jaw of bearing set.
1035 setting screw hole.
30 1035' setting screw.
1036 pan-shaped bearing.
1037 clamping claw with bearing set.
1038 coupled column.
1039 ring-shaped groove.
35 1040 coupled hole type structure.
; 1041 C-type auxiliary ~aw seat.
~ 1042 movable penetrating rod.

`: 1 ,;,,, 1043 threaded projected columIl~
1044 three-clamping surface movable clamping claw with penetrating hole in the center.
1045 penetration hole.
5 1046 coupled hole of C-type auxiliary jaw seat.
1047 spherical column coupled type movable clamping claw.
1048 screw thread of support column.
1049 ring-shaped embodying structure.
10 1050 fixed ring.
1051 semi-circular clamping claw with arc surface back.
1052 cup-shaped screw plug.
1053 bar-shaped magnet.
15 1054 anti-scrap cover.
1055 movable clamping claw with special surface back.
1056 movable clamping claw with locking hole in the middle part.
20 1057 round hole in the middle of clamping claw.
1057' locki~g screw.
1058 semi-circular clamping claw.
1059 plate type clamping claw.
1060 locking screw.
25 1061 middle connecting type semi-circular clamping claw.
1062 movable pin.
1062' connecting rod.
1063 middle clamping claw.
30 1064 plate type clamping claw sheet.
1064' plate type clamping claw sheet.
lD65 long grooved hole at two sides of clamping claw.
1066 inward bended plate type clamping claw.
35 1067 sectional plate type çlamping claw.
1068 rabbeted movable clamping claw.
1069 rabbeting groove.

a~ .

G5~

-- 2g --1070 mutual limit of plate type clamping claw.
1071 anti-scrap arc cap.
1073 movable clamping claw with longitudinal gap at near side.
5 1075 independent driving rotary motion jaw.
1076 clamping claw having central column at bottom and multiple grooves at back.
1077 clamping claw having inclined conic back and a groove.
10 1078 clamping claw having inclined conic back and a flange.
1080 spherical projected column.
1081 exploded groove.
1082 plate type clamping claw at side of vise.
15 1083 clamping claw with transverse arc groove.
1084 movable clamping claw with fixed hole.
1085 clamping claw with locking hole in the arc ; groove on back.
; 1086 locking hole.
20 1087 movable claw with stop gap.
1088 movable claw with plate type extended clamping surface at single side.
1089 semi-circular clamping claw.
1095 screw hole on jaw.
25 1095' set~ing screw.
1096 bearing.
1099 ring-shaped groove on axial column of auxiliary jaw.
1101 fixed jaw.
30 1102 multi-angular face arc socket.
1103 fixed jaw with smaller top larger lower part inwardly inclined arc socket.
1104 threaded parallel longitudinal clamping claw seat hole.
35 1105 fixed jaw transversely penetrated through round hole groo~e.
1106 handle.

,- .

1107 control rod.
1108 magnet.
1108' transverse penetration hole on jaw.
1108" transverse groove of kransverse penetration hole and socket.
1120 fixed jaw with single-set longitudianl long groove.
1121 fixed jaw with double-set longitudinal long groove.
10 1122 Y-shaped fixed jaw.
1123 fixed jaw for mixed use of movable clamping jaw and inward bended plate clamping jaw.
1124 fixed jaw of plate type clamping claw.
1126 rotary fixed jaw.
15 1127 projected cylinder of fixed jaw.
1128 round hole of fixed jaw seat.
1129 external retaining ring.
1130 single-set movable clamping claw.
1202 motion jaw.
20 120Z' motion jaw with multi-face socket.
1203 motion jaw with smaller top larger lower part inwardly inclined arc socket.
1205 motion jaw with transverse penetration round hole groove.
25 1220 motion jaw with single-set longitudinal long groove.
~221 motion jaw with double-set longitudinal long groove.
1222 Y-shaped motion jaw.
30 1223 motion jaw for mixed use of movable clamping jaw and inward bended plate clamping jaw.
1224 motion jaw of plate type clamping claw.
1225 transverse displacement auxiliary jaw.
35 1226 rotary auxiliary jaw.
1301 arc-shaped socket~
1401 central hole at ~ottom of arc-shaped socket.

~2~5~L~9 1501 small cylinder at center of clamping claw.
1601 lead screw.
1701 screw hole of support arm.
1801 support arm.
5 1802 support arm with double screw hole.
1901 tool seat.
1902 side groove of tool seat.
1903 setting rabbeted seat.
1904 tool seat with three directional driving guide rail.
2001 guide rail.
2101 round sliding block formed by coupling bott~m of motion jaw with guide rail.
2201 parallel coupling sliding block formed by coupling bottom of motion jaw with guide rail.
2202 sliding block with central column at the parallel surface separated from motion jaw.
2203 central screw nut of motion jaw.
20 2204 spring washer.
2205 parallel sliding block with round hole in the center.
2206 central hole of parallel sliding block.
2207 central column at bottom of motion jaw.
2208 pad.
2209 external retaining ring.
2210 intersecting arm under motion jaw.
2211 intersecting arm on sliding block.
2212 transverse joining pin~
30 2213 elevationally moving limitation plane of motion jaw.
2214 central rod with spherical column.
2215 sealing plug.
2216 spherical cup-shaped socket.
35 2217 fixed screw nut.
2218 spring washer.
2219 vertically central hole of motion jaw.

2220 coupling hole of motion jaw Eor lead screw t~ swi~g.
2221 ring-shaped groove a~ end of lead screw.
2226 spherical structure.
5 2227 smo~thly ~ircular arc hole.
~228 penetrating pin hole 2229 penetrating pin.
2230 fixed mask with spherical arc surface and penetrating hole.
2231 screw.
2232 screw hole.
2301 fixed sheet a~ bottom of motion jaw.
2401 screw of locking sheet at bottom of motion jaw.
15 2501 setting screw of lead screw.
2601 screw hole at bottom of coupling column.
2701 setting screw hole o~ guide rod on motion ~aw.
2801 coupling hole of guide rod on motion jaw.
20 2901 supporting column of clamping claw with thread at terminal section.
2902 screw hole of jaw seat with larger hole tightly juxtaposed with terminal section.
3001 axial column on socket.
25 3002 support protective cover on clamping claw jaw.
3004 round hole of string-shaped gap on protective cover.
3005 upper protective cover.
30 3006 central tip projected axial column.
3007 central concave spherical surface axial column.
3008 fixed screw.
3009 spherical axial column.
35 3010 threaded hole in the center of jaw seat.
3011 axial column on auxiliary jaw.
3012 arc ~ap on back of jaw.

3012' arc-shaped sealed groove on back of jaw.
3013 limit pin.
3014 ladder lead screw.
3014' ladder lead screw with rotary handle.
5 3015 fixed pin hole of tool body.
3016 fixed pin.
3017 fixed pin hole formed by clamping claw and jaw.
3018 setting plugged pin.
10 3019 locking transverse rod.
3019' transverse hole on locking transverse rod.
3019`' gap of locking transverse rod.
3020 limit screw in ~he middle ~f loc~ing transverse rod.
15 3021 U-shaped locking pin.
3022 locking pin.
3023 longitudinal long groove.
3024 clamping join screw.
30~5 limit transverse groove of auxiliary jaw.
20 3026 longitudinal screw hole on jaw.
3027 limit screw.
3030 vertical coupling hole of motion jaw.
3031 parallel rod type guide rail.
3032 transverse gapped groove.
25 3033 transverse parallel groove.
3034 independent transverse parallel groove hole.
3035 one piece guide rail.
3036 transverse parallel groo~e hole with gap at bottom.
30 3037 stable plug.
3054 C~shaped clamping seat with incline.
3055 middle seat.
3056 locking hole at side of C-shaped clamping seat.
35 3057 locking hole incline of C-shaped clamping seat~ -3058 locking hole at side of middle seat having ~L~

incline.
3059 locking hole at incline of middle seat having incline.
3060 locking screw.
5 3061 locking screw nut.
3065 incline extended from jaw of tool seat.
3066 screw hole.
3067 cylindrical body with screw and ring-shaped groove.
10 3068 ring-shaped groove of cylinder.
3069 middle seat.
3070 incline of middle seat.
3071 coupling hole of inclined cylindrical body.
3072 side screw hole.
15 3073 handle of locking screw.
3074 coupling hole of C-shaped clamping seat cylindrical body.
3075 side screw hole.
3076 handle of locking screw.
20 3077 screw holes at upper part and side of C-shaped clamping seat.
3078 cylindrical body with screw and ring-shaped groove.
3079 ring-shaped groove of cylindrical body.
25 3080 auxiliary middle seat.
3081 cylindrical body with screw and ring-shaped groove.
3082 screw hole.
; 3083 ring-shaped groove of cylindrical body.
30 3084 auxiliary middle seat.
3085 screw handle.
3086 side screw hole.
3089 cylindrical lower side tool body with screw at outside.
35 3090 bottom seat.
3091 flange of bottom seat.
3092 fixed hole~

3093 concave inner ring hole.
3094 arc-shaped limit block with inside threads.
3095 limit pin.
3096 side screw hole.
5 3097 handle of screw.
3098 upper tool body.
3099 middle ~ool body.
3101 auxiliary jaw with transverse displacement and elevationally moving adjustment.
10 3102 semi-circular transverse groove.
3103 limit groove.
3104 limit screw.
3105 screw holeb 3106 middle double side sliding jaw.
15 3201 plate type clamping claw.
3202 plate type clamping claw with incline at back.
3203 plate type auxiliary clamping claw.
3204 stable block.
3205 fixed screw~
20 3206 hole in the stable block.
3207 sliding support arm.
3208 threaded hole in thq;sliding support arm.
3209 driving screw of conic side clamping claw.
3210 conic side clamping claw.
25 3211 dovetail groove on stable block.
3212 fixed rod at bottom of stable block~
3213 side support arm.
3214 side clamping claw.
3215 side guide rail.
30 3220 C-shaped lower tool seat.
3?21 locking screw.
3222 clamping block.
32~3 rectangular hole groove at bottom of tool seat.
35 3224 fixed block.
3225 screw hole.
3226 penetration hole.
f~'~

~L2~ 3 3227 screw for joining bottom of vise and fixed block.
32~8 screw hole~
3229 angular locking screw.
5 3230 clamping block.
3231 inner hole of clamping block.
3232 horizontally locking gap at lower tool seat.
3240 C-shaped clamping seat.
3241 threaded hole of C-shaped clamping seat.
10 3242 locking screw.
3243 locking screw nut.
3244 fixed jaw surface for vise seat.
3245 multi-angular hole of fixed jaw surface of vise.
15 3246 multi-angular hole in the middle section of C-shaped bottom seatO
3247 multi-angular hole at bottom seat of vise.
3248 multi-angular hole at C shaped clamping seat.
3250 locking screw with spherical head.
20 3251 inclined conic middle block.
3251' inclined conic middle block.
3252 fixed screw nut.
4000 lower incline of upper tool body.
4001 cylinder of lower incline of upper tool body.
25 4002 incline on middle tool body.
4003 vertical concave ring hole.
4004 axial column which is vertical to incline at lower side of upper tool body.
4005 ring-shaped groove.
30 4006 upper side incline of middle tool body.
4007 concave round hole which is vertical to incline at uppe~ side of middle tool body.
4008 side screw hole.
4009 handle of screw.
35 4010 upper tool body.
4011 dovetail structure.
4012 coupling seat.

4013 bottom seat.
4014 ring~shaped adjusting structure.
4015 central threaded hole of coupling seat.
4016 spherical central screw.
5 4017 ring-shaped spring.
4018 dovetail groove.
4019 dovetail locking block.
4020 dovetail locking screw.
4021 fixed hole of bottom seat.
10 4022 hole for setting spriny.
4023 side fixed screw hole.
4024 fixed screw of spring.
4025 ' fixed sheet of ring-shaped spring.
4026 screw for fixed sheet.
15 4027 central hole of bottom seat.
4028 round hole of side arm of ring-shaped adjustment structure.
4030 middle coupling structure.
4031 smaller top larger bottom inclined conic ring hole.
4032 smaller top larger bottom conic column.
4033 central adjusting screw.
4034 setting pin.
; 4040 lead scxew with dual directional lead screw.
25 4041 cylindrical screw nut coupled with motion jaw.
4042 ring-shaped elastic frictional sheet.
4043 round hole under fixed jaw.
4044 transverse gap at bottom of motion jaw.
30 4045 larger hole of ladder hole of support arm.
4046 smaller hole of ladder hole of support arm.
4047 inner retaining ring.
4048 end of lead screw near handle.
~ 4049 projected rod structure.
; 35 4050 inner concave round hole.
4051 side hole.
4052 pin.

4053 cylindrical screw nut.
4054 concave coupled groove.
4060 encodex.
4061 device for detecting quantity oE linear displacement.
4070 spherical seatO
4071 slotted groove.
4072 upper tool body which possesses concave structure at bottom~
10 4073 locking screw nut.
DETAILED DESCRIPTION OF THE INVENTION
_ The vise of Figure 1 has the following features:
1 The inner concave dovetail arc slot is ~5 installed on the back side of the half-circular clamping jaw and a limiting pin rod is installed at two ends of the said dovetail arc slot. Moreover:
a) Screws are coupled with the dovetail arc slot, and b) Screws and dovetail block penetrating through the back side of the jaw are installed on the back arc of the jaw.
2 There is no support seat on the bottom side of the moving jaw; thus the movable clamping jaw can directly slide on the guide track of the machine seat to increase the suitability for clamping the working piece.
3 The height of the bottom side of the movable clamping jaw of the fixing jaw is the same as that of the sliding track on the machine seat.
4 The inner concave arc face between two arc ~lots on the jaw concave arc face between two arc slots on the jaw e~tend downwards through the bottom of penetrating the working piece.
5 The outer side of the jaw contracts towards the inside, thus the sliding motion of the clamping jaw cannot be stopped, when it clamps the ~7 ~2G~ i,.'3 ~ 39 -working piece with the concave shape on the middle section.
As shown in Fig. 1, four sets o sliding clamping claws 1001 are respectively assembled on the fixed jaw 1101 and motion jaw 1201, at the center of arc-shaped socket 1301 of jaws 1101 and 1201, and there is a h~le 1401 to accommodate small ~ylinder 1501 at the bottom of clamping claw 1001 or rotation and sliding.
One guide rod 1601 penetrates through support arm 1801 which has screw inner hole 1701 in order to drive motion jaw 1201. ~ne end of tool seat 1901 has support arm 1801, its other end has the fixed jaw 1101, and its middle section has guide rail ~001 for motion jaw 1201 to make reciprocating driv~. For joining motion jaw 1201 and guide rail 2001 at the bottom of motion jaw 1201, a cylindrical structure 2101 or bilateral parallel column-type structure 2201 couples with guide rail 2001, and at its bottom, there also is a fixed sheet 2301 which is screwed by fixed screw 2401 in the screw hole 2601 at ~he bottom of coupling column 2101 or 2201 of the motion jaw. The motion jaw is placed at the lower side of coupling hole 2801 of the guide rod, and there is a screw hole 2701 for screwing the setting screw 2501 of the guide rod.
Fig. 2 is a perspective graphic view of clamping claw 1001 as shcwnin Fig. 1. Its front side is a plane, and two sides are reversed triangular and therefore, it forms a three-side clamping surface.
Its m~rit is precision and its suitability for various shapes of the clamped pieces;
Fig. 2-1 shows the clamping claw 1002 as shown in Fig~ 2 in which the front side of the clamping claw 1002 then possesses the concave arc type in order to enchance the adaptation of the clamping claw to clamp irregular-shaped work pieces;
Fig. 2-2 shows the clamping claw 1003 or 1003' in which its sliding surface is o a multi-. ? ~,1 - 4~ -angular continuous arc shape or multi-plane shape and is used for coupling with the arc shape socket in order to reduce the frictional rssistance;
Fig. 2-3 shows the clamping claw 1004 as shown in Fiy. 2 wherein for the clamp surfaces at two sides of the clamping claw, one is in a concave arc shape, the other one is in a t~othed type;
Fig. 2-4 shows the clamping claw 1005 as shown in Fig. 2, wherein the clamp surface of its one side is concave arc ~hapP;
FigO 2-5 shows the clamping claw 1006 which is a semi-circular clamping claw and the side nPar another clamping claw of some jaw poss~sses a cutting angular clamp surface;
Figs. 2-6 and 2-7 show the semi circular clamping claw 1007 which is processed by bending the metallic plate to be used for reducing cost;
Fig.s.2-8 and 2-9 show the clamping claw 1008 which is processed by bending a metallic plate and has a round hole in the middle and possesses a three-sided clamp surface for reducing cost;
Figs. 2-10 and 2-11 show the clamping claw 1009 which has a special curve-typa clamp surface for clamping and fixing special shaped work pieces.
Figs. 2-12 and 2-13 show the clamping claw which possesses the clamping claw structure 1010 at the sides to lock and fix different materials and clamp diferent soft and hard pieces;
Figs. 2-14, 2-15 and 2-16 show the embodiment of themaln body of clamping claw lOll and clamping claw sets, 1012, 1013 and $ixed screw 1014 of the clamping claw, wherein the front side o$ the clamping claw possesses a claw shape and changeable dif$erent materials. Besides the above various designs which can extend the applicatory range, the structure of clamping claw 1015 as shown in Fig. 2-17 can further be in a similar cylindrical shape and possesses at least a section of a circular arc to couple with the socket, and along its circumference, there are structures of toothed shape, convex arc shape, or - concave arc shape, and its bottom possesses a central hole.
Fig. 2-18 shows the clamping claw 1016 as shown in Fig. 2-17 which is of similar cylindrical shape and its bottom and upper parts possess a small projected column for coupling.
~ Fig. 2-19 shows a clamping claw set 1017 which is made up of a laminate of several juxtaposed clamping elements each of which possesses concave and convex circular arc and toothed surfaces and plane;
and in the middle, there is a round hole for rotating and adjusting to be suitable for various work pieces, and it is characterized in that the largest distance of each type of the clamping surfaces is constantly smaller than the radius of the back arc of the socket in order to rotate and not to interfere with the socket.
Fig. 2-20 shows a clamping claw which is constituted by joining clamping claw set 1017 and circular axial column 1019 with grooves or arc gaps.
Due to stable laminate 1018 this type of clamping claws can reduce transformation or destruction which is caused by the weakness of strength and rigidity of circular axial column 1019.
Fig. 2-21 shows the universal rotatable multi-faced clamping claw 1020 wherein on the inside it possesses spherical axial column 1021, and on the outside it has ring-shaped fixed plug 1022 which penetrates thxough round hole 1025 and is locked by screw 1023 in screw hole 1026~
Fig~ 2-22 shows the spherical axial column of clampiny claw 1027 which is projected upward in the middle part for coupling on the fixed jaw or motion jaw of the tool seat.

!:..

Fig. 2-23 shows the movable clampiny claw 1028 in which its middle part possesses the couple-side concentric circulax arc structure and makes free - universal rotations by a concave central axial column, wherein its two ends are coupled and placed on the jaw and it is placed on the cover.
Fig. 2-24 shows a movahle clamping claw having a two-sectional universal clamping claw structure which includes movable clamping claw 1032 and rotary and adjustable auxiliary jaw 1029. The joining place of two sections of clamping claw is an inclined conic surface, wherein at one side there is screw hole 1031 which is vertical to the inclined conic surface .
At another side there is threaded bottom 1033 for screwing in the screw hole in order to rotate and adjust, owing to the axial line of the threads being vertical to the inclined conic surface. ~herefore, in rotation and adjus~ment, the axial line between two sections o~ the clamping claw will be varied in ~he angle of elevation, and the rotary adjustable auxiliary jaw and fixed jaw or motion jaw are joined by screwing threaded bolt 1030 into the bolt for rotating and adjusting the circumferential angle of the two-sectional clamping claw set or further rotating - 25 continuously to adjust the stretched distance of the clamping claw set, and due to the two kinds of angular adjustments, clamping claw 1032 can make universal adjustments.
Fig. ~-25 shows a two-sectional universal clamping claw structure having a bearing set and is set by a ring-shaped groove, and as shown in the drawing one set of movable clamping claws 1037 or rotary auxiliary jaw 1034 possesses a hole-type struc~ure 1040, and its side has a small screw hole 35 1035 for screwing the setting screw 1035', while another set possesses a circular projected column 1038.
On the projected column la38, there is ring-shaped ,, ~

groove 1039 which is limited by the above-mentioned setting screw 1035' in order to prevent its falling down and will not interfere with its rotation. The joining surface of both of them possess a pan-shaped bearing 1036 to enhance the precision of the adjust-ments of the clamping claw. The method of joining of rotating auxiliary jaw 1034 and fixed jaw or motion jaw is als~ the same as previously mentioned~
Fig. 2-26 shows another structure of the two-sectional universal clamping claw and possesses the universal adjusting function through a cross joint.
As shown in th~ drawing, movable clamping claw 1044 possesses a cen~ral hole 1045. C-~ype auxiliary jaw seat 1044 is assembled between fixed jaws or motion jaws in which the movable clamping claw is placed to make a selection of the circumferential angle and adjustment of stretch. Both of them also can be joined togethe~ by the method mentioned above with respect to Fig. 2-25, and the pan-shaped bearing is ~0 assembled to enhance precision.
Fig. 2 27 shows a universal movable clamping claw and jaw which is coupled with a spherical column and can be set firmly. Its structural characteristics are as follows:
- the jaw part possesses at l~ast a screw hole;
- one end of the support column possesses thread 1048 for rotating and adjusting the screw hole for screwing the jaw in or out; its middle section possesses a pattern ring-shaped structure 1049 for operating and rotating the support column; its terminal section possesses a screw for screwing a fixed ring 1050, and locking or releasing movable clamping claw 1047, and from its terminal section additionally extends a spherical projected column 1080, the outer diameter of the spherical column 1080 being smaller than that of the scr~w of the terminal section; -- the outside of clamping claw 1047 is the clamping side which possesses a plate circular structure, while its inner side is the coupling side which possesses a conic structure, its inside possessing a conic hole. The outside small hole is slightly larger than the above spherical column and after being placed, it is processed to be tightened and let it be smaller than the spherical column to prevent its falling down and can be free to couple and move;
- the spherical projecting part extending from the terminal section of the supportin~ column can further assemble symmetrical exploded groove 1081 which is at least exploded into two parts, and possesses elasticity for inserting into the conic hole of the clamping claw.
Figs. 2-28 and 2-29 show embodiments of the movable clamping claw which is joined by the attractive force of a magnet. Its structure includes:
2~ - a movable clamping claw 1051 or 1055 having an arc surface or spherical surface on its back;
- at the back of the socket, there is a screw hole 1104;
- a bar magnet 1053 is stuck or tightly assembled at the inside ~f a cup-shaped screw plug 1052; the inner hole of screw plug 1052 is larger than the outer diameter of magnet 1053. The magnet, after being fixed, is of a length which is the same as the cup-shaped margin of screw plug 1052;
- the cup-shaped margin of screw plug 1052 at least possesses two opposite gaps, and screw hole 1104 for rotating and screwing the jaw seat in and out;
- non-magnetic permeable anti-scraps cover 1054 is placed at th~ hole of screw plug 1052;
- the magnetic lines attract the arc or spherical clamping claw by the above structure.
Fig. 2-30 shows an embodiment of the movable clamping claw which has a locking hole at its C

center. As shown in the drawing, in the middle of movable clamping claw 1056 there is a round hole 1057 for penetrating and locking screw 1057' J and on the - jaw seat on which the movabl2 claw is placed, there is a threaded screw hole for screwing the above said screw in oxder to tighten or release the clamping claw.
The merit of this is to provide one or more sets of clamping claws to be locked and fixed as a base surface for clamping the irregularly-shaped work pieces in order to mill or pla~e, and the extended arc cap 1071 at the margin of the claw is used for stopping scrap~.
Fig. 2-31 shows the structure vf the plate clamping claw which is extended from the non-adjacent side~near the outside of the jaw) of the clamping claw of the movable clamping claw. As shown in the drawing~
at the front side of semi-circular clampiny claw 1058, there are two screw holes in plate clamping claw 1059 which are longer than the width of the claw surface is locked on it by screw 1060, after combination of both of them, one being characterized in that one end at the side near the semi-circular clamping claw is uniform, while another end extends along the outside of the clamping claw near the jaw in order to clamp small work pieces at the side which is smaller than the radius of : 25 the clamping claw and prevents sliding of the semi-circular clamping claw.
Fig~ 2-32 shows a mid-connection-type clamping claw. It is characterized in that the near sides of two semi-circular clamping claws 1061 are rabbeted with respect to each other and a movable pin 1062 penetrates through the middle part to join them together. The character of this structure is that the two clamping claw sets can commonly use one arc socket in order to obtain lower frictional clamping and it is easy to be manufactured. Especially~ it is connected by two sets to substitute the original one set o~ the semi-circular clamping claw and can provide more points of contact.
Fig. 2-33 shows a three-sectional embodiment of the connecting~type clamping claw as shown in Fig. 2-32. As shown in the drawing, two sides oE middle clamping claw 1063 rabbets clamping claws 1061 to each other and the claws are connected by movable pin 1062. Middle clamping claw 1063 can make two different selecti~ns: either the same as the clamping claw at the two sides, or slightly smaller or slightly bigger than the clamping claw at the two sides.
Fig. 2-34 shows the structure of a foldable multi-sectional plate clamping claw. As shown in thQ
drawing, clamping claw 1064 can be made unitary or can be combined with 1064l. In the middle part, there is a hole to join with movable pin 1062, and each of its two sides respectively possesses a long grooved hole 1065. Each middle part respectively penetrates a connecting rod 1062' and two connecting rods simultaneously join with the jaw to accept the clamping force. The merit of this design is that when the middle projected piece is clamped, the clamping claw can form a bent curve surface to increase the clamping point.
Fig~ 2-35 shows plate clamping claw 1066 which is bent inward, and is placed on the jaw having an arc socket, and constitutes the structure of mixing movable clampiny claw and fixed plate claw, and has the ability to clamp irregular-type work pieces by the inward bent surface and movable clamping claw;
and through plate clamping claw 1066l it is convenient to clamp a small work piece by clamping the sides of the work piece.
Fig~ 2-36 shows an embodiment of rabbeted movable clamping claw 1068. ~s shown in the drawing, at the front side of the clamping jaw, there are mounted sectional plate clamping claws 1067 and 1067', and at the near side of the clamping claw, there is ~", .,~ .

~ormed a groove 1069 which is larger near the jaw side after joining and its outside is smaller. The front side of the movable clamping claw is the clamping sur~ace which gradually contracts backward. The terminal section possesses a vertical circular column structure for rabbeting into gxoove lU69 for swinging rightward and leftward in order to clamp an irregular-shaped work piece, and in the removal of said jaw, the procedures are the same as for the traditional vise.
Fig. 2-37 shows transverse semi-circular groove 3102 which is transversely placed in the motion jaw or fixed jaw by auxiliary jaw 3101 which can be elevationally moved up and down. At the front side of the auxiliary jaw there are two coupling seats 1301 for coupling with movable clamping claw 1001 for multi-clamping directional adjustment.
Fig. 2-38 shows motion jaw 1075 which is independently driven to rotate, and its front end has a plate clamping claw for clamping an irregular-shaped work piece by rotating at least two se~s ofseparate jaws; gives precision sliding between the above mentioned clamping claws with arc surface at its back and the socket-type jaw sea~ is one of the important functions of the structure of this vise, therefore, the joining structure between the clamping claw and jaw also must po~sess this design.
Fig. 3 shows a s~ructure which can reduce the friction between the back of the clamping claw and arc socket, and due to the precision movement of the clamping claw is suitable for irregularly shaped work piecas. Therefore, it lets the contact area between the arc socket and clamping claw be ~:educed when it will not affect the stability. As ~hown in the drawing fixed jaw llU2 with multi-face arc socket and motion jaw 1205 join with the clamping claw having an arc back, and the joining of both of them is a discontinuous small area contact part of the multi-face contacting with the clamping claw is a plane and it can make both of them contact by multi-line, or it is processed to become a small section of the arc surface to let both of them become a discontinuous arc contact. This function is formed as shown in Fig. 2-2 and it is that multi-angular shape 1003 which couples with the arc support surface of the socket to let both of them become a multi-line contact, or the angle at the multi-angular back of the clamping claw is a small arc section which couples with the arc surface of the socket and becomes discontinuous with the arc surface contact.
Fig. 3-1 is an elevational view of the structure as shown in Fig. 3~
Fig. 3-2 is a sectional view of Fig. 3 showing a fixed jaw and the motion jaw which possess a multi-surface socket.
Fig. 4 shows a clamping claw which possesses the arc groove at its back to join with the arc surface socket in order to reduce the loss of friction. This kind of structure also can be a reverse structure, that is, at the arc surface of the socket, there is an arc groove which joins with the clamping claw with an arc surface at back.
Besides the above-mentioned transverse arc groove, one of the socket arc surfaces or back arc surfaces of the clamping claw assembles the longitudinal or inclined groove or network uneven arc surface or hole, and it can also enhance the precision of the clamping claw. The metho~ of joining the clamping claw and jaw also is an important part of this design. Due to the difference and broad joining method of this kind of clamping claw, the joining structure of each type of the clamping claws and jaws will be described in detail as follows:
Clamping claw 1076 as shown in the embodiments of Figs. 4 and 4-1, wherein its bottom i5~~

possesses a central column and couples in the hole at the bottom of the jaw seat for supporting the clamping claw to rotate.
- The structure of the movable clamping claw joining with the fixed jaw and motion jaw includes an arc groove key or dovetail groove which is placed between the back of the movable clamping claw and the arc support surface of the jaw or be~ween the bottom of the movable clamping claw and the bottom of the jaw in order to couple and slide each other. For example, the clamping claw as shown in Fig~ 2-15 couples with the pin of the jaw socket by ~he arc groove at its back and the bottom of the clamping claw for free sliding.
FigsO 5 and 6 show the structure of joining the movable clamping claw and jaw and it is further characterized by including:
- Movable clamping claws 1~77 and 1078, an inclined conic structure which possesses a smaller top and a larger bottom, as shown in Figs. 5-1 and 6-l;
- arc socket of jaw 1103, an inwardly incli~ed arc socket wlth smaller top and a larger bottom;
- structure of joining the movable clamping claw and jaw to assemble the non-vertically placed inclined slot which can prevent the arc support surface of the socket from falling down at the front side and can join with the projected column or projected margin to rotate and join the side and prevent from falling down in the front side, its joining drawings being shown in Figs. 5-2 and 6-2;
Further structure of features of the a~ove clamping claw include a hole at the bottom of the clamping claw, in which there is a spring and steel ball which has a radius the same as that of the hole to substitute for the central column and to enhance precision. It fuxther poss~sses a bearing in the joining hole of the jaw for rotation or the axial A, . . .

column to improve the rotating effect.
Figs. 7 and 7-1 show the embodiment of another type of joining the movable clamping claw and jaw, wherein the jaw seat possesses a penetrating s~rew hole 2902r its terminal section tightly neighboring a hole with a larger diameter, due to the bottom of the clamping claw possessing a section of screw 2901. The section near the clamping claw is smaller than the screw, and its thickness is slightly larger than the length of the screw of the jaw seat, therefore, after screwing the clamping claw therein, thus forming the structure and function of free rotation and indirect e~traction. The structure of screw hole 2902 and 2901 of the abo~e jaw seat and clamping claw can be placed in reverse with the same functions.
Fig. 8 shows the further structure of the clamping claw set. ~he clamping claw set is slightly cylindrical as shown in Fig. 2-17, and possesses at least a section of circular arcs to couple with the socket, and the structure distributed along its circumference is in toothed shape, convex arc shape, concave shape, and plane, and its bottom possesses clamping claw 1015 with a central hole.
According to differen~ shapes of work pieces, the user can select different shapes of the clamping suraces to clamp different work pieces; further, if a different shape of the clamping surfaces is made of a different material, its application range is broader. The clamping claw of the above vise is a clamping claw structure having a multi-directional different clamping surface. Its main characteristics are that:
- clamping claw 1015 is slightly cylindrical shaped, and possesses a coupling hole at its lower part;
- the lower part of clamping claw 1015 possesses a concave hole and couples with axial column 3001 of of the socket;
- clamping claw 1015 adjusts the clamping surface by rotation;
- the clamping surface of clamping claw 1015 is of a S different shape or is made of different material.
Figs. 8-1, 8~2 show the top view and side cross-sectional view of this embodiment showing its main structure.
Fig. 9 illustrates a urther embodlment of joining the above rotary adjus~able clamping claw set and jaw. In this embodiment, as shown in Fig. 2-18, it is almost a cylindrical clamping clàw, and its bottom and upper parts possess clamping claw 1016 with a small projected column 1501 for coupling and is used to join with axial hole 1401 on tne jaw seat and upper support cover 3002 with a stable hole, and make free ro~ation to be suitable for various shapes of work pieces. Upper support cover 3002 is locked at the top of the jaw seat to stabilize the clamping claw. This structure has the following features:
- support protect cover 3002 assembled on the upper part of the clamping claw is locked at the upper margin of the jaw, - Movable clamping claw 1016 is adjusted by rotation;
- At two sides of the upper and lower parts of the movable clamping claw there assembles projected a~ial column 1501 which is rabbeted at the tool seat and hole of the upper protective cover, for rotation and adjustment. Two sides of the upper and lower parts of the movable clamping claw possess a concave hole or penetrating hole and couple with the base seat or motion jaw seat and projected axial column on the protective cover or penetrating rod, for rotation and adjustment. The reverse structure of this design is to change the projected column at two sides of upper and lower parts of the clamping claw into a hole, and the upper and lower support ,~

~ 52 -holes are changed into projected axial or penetrating rod. Its variation and design are very simple.
Figs. 9-1, 9-2 are the top elevational view and side cross-sectional view of the present embodiment showing its main structure.
Fig. 10 shows laminatea clamping claw 1017 used in substitution for the cylindrical multi-faced clamping claw. It is made by a lamination method and is easily manufactured, and is more suitable for irregular shapes, and possesses the mul~i-sheet convex arc and toothed face, concave arc, convex arc, plane type of clamping laminated sheet as shown in Fig. 2-19, this kind of laminated sheet possesses a round hole for laminating and forming clamp claw 1017 in order to rotate and adjust various work pieces. The most important characteristic is that the largest distan~e of various clamping surfaces is constantly smaller than the radius of the back arc of the socket, or in the same dagree of the arc angles of the socket. It must possess at least a set of projected points of the clamping claw which is e~ual to the radius of the back arc in order to form a support point and rotate to be interfered by the socketO Four sets of central columns constitute the above-mentioned transverse directrix. Important characteristics are:
- The distance between projected points of each clamping claw and center as shown in Figs. 2-18 and 2-19 < the radius of the arc surface of the socket;
- Under any angle a set of pro]ected points of each clamping claw set which can contact the arc surface of the socket will not be less than one set ~o be used as the support point for accepting the force.
Figs. 10~1, 10-2 are the top elevational view and side cross-sectional view of Fig. 10 showing its main structure.
Fig. 11 shows an em~odiment of the structure of the above clamping claw possessing a cylindrical axle. Due to its support point being far away from the two ends, if the distance of each clamping surface of the clamping claw is unusual and couples with the back of the socket, the middle section is easy to transform and be bent by clamping or damaged by excessively applied force. If the radius distance of each clamp-ing claw is equal, then its shape is easy to be limited. The following is the improvement overcoming the defect, as shown in the figure. The clamping claw set is c~nstituted by circular axial column 1019 having a groove or arc gap as shown in Fig. 2-20. This design of clamping claw further assembles stable - laminate 1018 in oxder to reduce the transformation or damage caused by the weakness of strength and rigidity of circular axial column 1019. This novel design of stable laminate 1018 improves the defect of transformation caused by the applied force of the clamping claw of the central column.
Figs. 11-1, 11-2 are the top and side cross-sectional view of Fig. 11 showing its main structure. The structural characteristics of the above clamping claw and jaw including laminate 1018 comprise:
- An axial column 1019 fixed on the fixed jaw or motion jaw seat; on it there is a circular axial column 1019 which has a groove or arc gap and is not rotary;
- Multi-faced laminated cylindrical clamping claw 1017 possesses a coupling hole in the middle and sheaves with axial column 1019, and can freely rotate and does not contact with the arc support surface of the socket on the jaw;
- Stable laminate 1018 is unevenly placed between laminated clamping claw 1017 for clamping, and possesses an eccentric hole, its rear margin tightly contacting the arc support surface of the socket on the jaw. Its front margin is shorter than ~A
~,,"~7 the shortest extension distance of laminated clamping claw 1017;
- A hole of laminated clamping claw 1017 engages with axial column 1019, and couples with the sectional gap of the axial column and cannot rotate.
Fig. 12 shows the embodiment of applying a ~lamping claw set as shown in Fig. 2-21 having a spherical axial column and universally swinging adjustment on *he vis~. In the drawing:
- The clamping claw set possesses spherical axial column 1021 inside and outside added ring-shaped fixed plug 1022 and universal rotary multi-faced clamping claw 1020, and is fixed in screw hole 1026 by screw 1023 which penetrates through round hole 1025;
- A universal rotary multifaced clamping claw 1020, in the middle part of which a round inner ring-shaped slot is provided, extends to and penetrates through ~he arc-shaped tapered hole to one face of said clamping claw;
- A structure of ball-shaped shaft column 1021 with a positioning hole on each of its both ends respectively to couple with said clamping claw;
- A ring shaped fixed plug 1022 to be locked in the inner ring-shaped slot of motion clamping claw 1020 by the joining way of spiral or screw 1023, and also having an arc-shaped tapered hole to be coupled to the upper side of ball-shaped shaft column 1021 - The jaw seat to which protec~ive cover 3005 is attached having a shaft column 3006 for fixing which is fixed by a screw 3008 or is tightly screwed in the screw hole;
- The dimension of shaft column 3006 for fixing is smaller than that of the motion clamping claw and the tapered hole of the ring-shaped tapered plug withou~ interfexing with the free .swing of the motion clamping claw in its set angle.

From Figs. 12-1, 12-2, its detailed structure is clear.
The above structure forms the universal swing structure together with rotatable multi-faced clamping claws for selecting the required clamping claw according to various clamping requirements.
Fig. 13 represents another exemplary embodiment of the above swing clamping claw wherein a motion clamping claw 1027 as shown in Fig. 2-22 is provided to clamp a work piece~ In said drawing, the middle motion clamp claw 1027 has a protrustion to couple with the ball-shaped shaft column 3009 in the fixed jaw or motion jaw of the tool seat. Shaft ~ column 3009 has a ball-shaped top and the lower part of said shaft column 3009 is of a round column shape to be inserted in~o the hole of the respective jaw seat or to be joined with a screw therein, and a protec~ive cover 3005 is provided on said jaw. Shaft column 3007 with an inwardly concave spherical face is provided with a protective cover 3005 to couple with shaft column 3007 having a drum-shaped convex face, thus forming with said protective cover 3005 either integrally or separately for insertion or joining with its threads to be turned therein.
Figs. 13-1, 13-2 are the top view and side cross-sectional view of said exemplary embodiment.
Fig. 14 shows another exemplary embodiment of said swing clamping claw having motion clamping claw 1028 as shown in FigD 2-~3. Features of the clamping claw 1028 and jaw are as follows - The middle part of motion clamping claw 1028 has two faces each with a concentric spherical-face~ arc;
- Shaft column 3007 has an inner concave face provided on the fixed jaw seat or motion jaw seat to couple with the spherical face of motion clamping claw 1028.
Said shaft column 3007 and the fixed jaw seat or motion jaw seat are integrally formed, or said shaft ~.~

column 3007 is separately provided for insertion or joining with its threads to be turned therein;
- Protective cover 3005 locked on the jaw is provided with shaft column 3007 having an inwardly concave spheric face to couple with the spheric-faced center of motion clamping claw 1028. Shaft column 3007 and protective cover 3005 are integrally formed, or shaft column 3007 is separately provided for insertion or joining with its threads to be turned therein.
Figs 14-1, 14-2 are the top view and side cross-sectional view of this exemplary embodiment.
- Fig. 15 shows the further jaw structure of the two-sectional universal clamping (as shown in the above Fig. 2-24 ) of the motion clamping claw, comprising motion clamping claw 1032 and rotatively \

adjustable auxiliary jaw 1029. An inclined conic face exists at the connection part of the two~
sectional clamping claw, wherein screw hole 1031 perpendicular to the inclined conic face in its one face and threaded column 1033 ;s provided on its other face for mutual turn;ny and rotary adjustm~nts, since the axial line of its threads is perpendicular to the inclïned conic face. Changes in the ele~ational angle will appear when the axial line between the two-stage clamping claws is rotationally adjusted. The rotatively adjustable auxiliary jaw and the fixed jaw or motion jaw are joined by threaded column lG30 to be turned into the screw hole for rotationally adjusting the circumferential angle of the two-stage clamping cla~ set or for further continual rotations to adjust the distance of retractions of the clamping claw set, and its two kinds of angular adjustment make clamping screw 1032 univer~ally adjusta~le.
Features of this clamping claw and jaw lie in that motion clamping claw 1032 and auxiliary jaw 1029 have their own inclined conic face respectively and are joined by the joining face, wherein one side of said joining face has shaft column 1033 with a spiral and its other side has a screw hole 1031 for mutual turning and jo;ning between said shaft column and screw hole, to adjust its angle ~y turning it and to adjust its distance by retracting it the central line of shaft column 1033 with a spiral ana screw hole 1031 is perpendicular to the conic face. The auxiliary jaw and the respective fixed jaw or motion jaw to which said auxiliary jaw is attached has a disc-shaped coupling face; thair coupling is also similar in that one side of the disc-shaped coupl;n~ has a shaft column with a spiral, while its other side has a hole ~,~
,~

with threads for their mutual turning in and joining to adjust the distance and angle ~y retractions.
Figs. 15 1, lS-2 are the top view of and side cross sectional view of thi~ exemplary em~odiment.
Fig. 16 represents a further exemplary embodiment of ~he structure sho~n în Fig. 15. In this drawing the universal mova~le clamping claw shown in Fig. 2-25 is the two-sectional unîversal cl~mping claw structure having a ~earing set and to be positioned by the ring-shaped slot, ;n this drawing, between motion clamping claw 1037 and rotatable auxiliary jaw 1034. One set of them has a hole-shaped structure 1040 the side of which has a small screw hole 1035 to accommodate positioning screw 1035' to be screwed therein, while the other set of ~hem has a round convex column 1038 having a ring-shaped slot 1039 which is limited by said posit;oning screw 1035' to avoid its slipping off without hindering its rotation.
The joining face of both of them has disc-shaped bearing 1036 to increase the adjustment agility of the clamping claw; further, the manner of joining of rotatable auxiliary jaw 1034 and the fixed jaw or motion jaw is the same as previously mentioned.
~he structural features of its clamping claw and jaw are as follows:
-- Motion clamping claw 1037, the front face of which is the clamping face, and its back face is an inclined conic face which closely leans against the inclined conic-shaped support face of rotati~ely adjusta~le auxiliary jaw 1034, thus forming a rotatively adjustable coupling structure;
- Rotati~ely adjusta~le auxillary jaw 1034, the side of which close to clamping claw 1037 has an inclined conic-shaped support - cj9 ~-face to couple with the inclined conic face of motion clampiny claw 1037. The rotatively adjustable coupling structure may ~e set ~etween said auxillary jaw 1034 and the fixed jaw or motion jaw;
-- Between motion clamping claw 1037 and auxiliary jaw 1034, one set of them has a hole-shaped structure 1040, the side of which has a small screw hole 1035 to accommodate positioning screw 1035' to be screwed thereih, while their other set has a round protruding column 1038 with a ring-shaped slot therein to be l;mited ~y the pos;t;oning screw to avoid ;ts sl;pping off;
-- The join;ng way ~etween the auxiliary jaw and fixed jaw or motion jaw features that auxiliary jaw 1034 has shaft column-shaped structure 3011 having a ring-shaped slot lP99, fixed jaw or motion jaw and a screw hole 1095 to lock ;n positioning screw 1095', thus forminy a structure for rotary adjustments;
-- Rearing 1036 is provided between auxiliary jaw 1034 and motion clamping claw 1037, and ~earing 1096 is provided between the auxiliary jaw and the fixed iaw or motion jaw to which said auxiliary jaw is attached to increase the agility.
Figs. 16-1, 16-2 are the respective top view and a side cross sectional view of this exemplary embodiment;
Fig. 17 ;llustrates a further structural embodiment o~ the said two-stage universal clamping cla~
as illustrated in Figs~ 15-16, whereîn the cross joint structure as shown in Fig. 2-26 is used to achieve the univ~rsal adjustment functions. In this drawingt ~2~

-- ~o --motion clamping claw 1044 has a central hole 1045, and C-shaped auxiliary jaw seat 1041 is provided between motion clamping claw 1044 and the fixed jaw or motion jaw to which said auxiliary jaw is attached.
Both sides of said jaw seat 1041 have a round hole 1046 to accommodate motion through rod 1042 to penetrate through to make clamping claw 1044 swing freely, and its ~ack has a protruding column 1043 with threads to be turned into the fixed jaw or motion jaw to which said auxiliary jaw is attached for making the circumferential angle selections and retracta~le adjustments. Both of them may also be joined in the same way as illustrated in Fig.
2-25, and a disc-shaped bearing is provided to increase the extent of agility.
Figs. 17-1, 17-2 are the respect;ve top view and side cross sectional view of this exemplary embodiment.
~\

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The above-said cross joint universal clamping structure has the following features:
-- C-shaped auxillary jaw seat 1041 is set ~ between motion clamping claw 1044 and the fixed jaw or motion jaw to whîch said auxiliary jaw is attached;
-- The join;ng way o~ auxil;ary jaw seat 1041 and motion clamplng claw 1044 îs featured in that motîon clamping claw 1044 has a central hole 1045, and C-shaped auxiliary jaw seat 1041 is set between motion clamping claw 1044 and the fixed jaw or motion jaw to which said auxiliary jaw is attached.
Both sides also have a round hole 1046 to accommodate motion through rod 1042 to make clamping claw 1044 swing freely;
-- Auxil.iary jaw sea~ 1041, the back of which has a shaft column 1043 to couple with the hole in the fixed jaw or motion jaw to which said auxiliary jaw is attached for free rotation, or it has a hole to couple with the shaft column on the fixed jaw or motion jaw for free rotation; in addition a bearing is provided on the coupling face o the auxiliary jaw seat and fixed jaw or motion jaw.
Fig. 18 illustrates a further structural embodiment of the universal clamping claw having the universal motion clamping claw as shown in Fig. 2-27 to be coupled to the ball-shaped column and possibly positioned and fixed. Its structural features are as follows:
-- The jaw part has at least, a spiral hole;
-- A support column, one end of which has a : 35 thread 1048 to rotationally adjust the screw hole or the jaw.

g For ex;t and entry, its middle section has an em~ossed ring 1050 to lock or release motion clamping claw 1047. From its end section extends a ball-shaped protruding column part 1080, the outer diameter of this ball-shaped part being smaller than t~at of the spiral in the end section.
-- The outer side of clamping claw 1047 is the clamping side having a flat board round structure, while its inner side is the coupling side with a conic~shaped structure tapered outwardly, its inner side also has a conic-shaped hole tapered outwardly, the small hole in its outer side being slightly larger than the above said ball~shaped column, and, after being inserted by the ball-shaped column, is then processed for tightening up to make said small hole smaller than said ball-shaped column to prevent the latter from falling off, but the latter can freely prevent coupling movemen~s.
~ig. 18-1 is its side cross sectional view.
Fig. 19 shows the ball-shaped protruding part extending from the end section of the support column which can be further provided with a symmetrical cutaway slot 1081 that is at least cut into two parts with elasticity to rabbet into the conic-shaped tide tapered outwardly in the clamping hole.
When the fixed ring 1050 is far away from clamping claw 1047, the above said structure enables clamping claw 1047 to swing freely for universal clamping, and when the fixed ring tightly packs clamping claw 1047, clamping claw 1047 becomes fixed to clamp a smaller work piece by its sides.
Fig. 19-1 is the profile view of the top view part.

~L7Z~

Figs. 20, 20~ 20-3 illustrate th~ re~erence exemplary embodiments applied to a desk-type vise.
Fig. 21 shows the motion clampLng claw described in the present invention. In addition to that the mechanical structure is ~oined to the jaw to which said motion clamping claw is attached, it can be further coupled by the attractive force of the magnet.
In said drawing, the fixed jaw or mot;on jaw has a transverse through hole 1108'; a transverse slot 1108"
is provided between the arc or ball-faced socket seats, and an operational rod 1107 couples a bipolar or four-polar magnetic rod 1108 penetrating through transverse through hole 1108' in the jaw. The operational rod is moved to control and opera~e magnetic rod 1108, thus forming thP same or different magnetic poles on both sides of transverse slot 1108'' to attract the arc of ~all-shaped clamping claw with magnetic conductivity and opposite and corresponding to the shape of the socket seat for sliding adjustments or for slackening and releasing.
2Q The joining structure of the above-said motion clamping claw and jaw has the following features:
-- it has a magnetic conductivity, and its back has an arc-faced or ball-faced motion clamping clamp;
-- the front edge of the jaw has an arc or ball~shapad socket seat;
-- the back of the socket seat has a transverse through round hole slot;
-- a slot transversely rabbets the above-said 3a transverse through round hole slot;
-- an operational rod, on which at laast one round magnet set is provlded through the transverse through round hole slot and said operational rod;

-- the magnet sets are operated and controlled by switch;ny to make the clamping claws attracted by the lines of magnetic force in - the socket seat or released therein.
Figs. 21-1, 21-2, 21-3 are the respective top view,side cross sectional,and front cross sectional views of this exemplary embodiment.
Figs. 22, 23 illustrate exemplary em~odiments o~ similar functions, wherein it has the motion clamping claw (as shown in Figs. 2-28, 2-29) joined by the attractive force of magnets. Its structure comprises:
; -- Fig. 22 shows motion clamping claw 1051 with an arc on its ~ack; Fîg, 23 shows the ; motion clamping claw 1055 with a spheric face;
-- the socket seat part has a spiral hole 1104;
-- a rod-shaped magnet 1053 is stuck or packed in the inner part of a cup-shaped spiral plug 1052, the diameter of the inner hole of spiral plug 1052 belng larger than the outer diameter of the rod-shaped magnet and after fixedly install;ng the magnet said rod-shaped magnet has a length the same as that as the cup-shaped beam of spiral plug 1052;
-- the cup-shaped beam of spiral plug 1052 has at least two opposite notches to serve as the spiral holes 1104 for rotatively moving the jaw seat in and out7 -- a non-magnetic conductîve and chip-proof cover 1054 is set on the hole mo~th of spiral plug 1052;
-- when the above structure makes lines of magnetic force attract the arc-shaped or ~all-shaped clamping claw to clamp an irregular-shaped work piece, the clamping claw set can slide freely.

C

Figs. 22-1, 23-1 are the cross sectional ~iews of the structure.
In khis design, the clamping claw set may be - rotatable freely; how~ver, during its use, it is constantly necessary to firmly fix or more sets of said clamping claws to provide a processing datum plane in an irregular shape as shown in Figs. 24, 24-1, 24-2.
The following will descrlbe the exemplary embodiments of various motion clamping claws that can be firmly locked to provide a processing datum plane.
Fig. 25 illustrates an exemplary embodiment wherein a central screw is used to firmly lock the clamping claw as such motion clamping claw with a locking hole in its center, as shown in Fig.2-30. In said drawing, a round hole 1057 is provided in the middle part of motion clamping claw 1056 to accommodate locking screw 1057' to penetrate through therein. The jaw seat t~ which said clamping claw 1056 is attached is provided with a small hole 3010 with threads to accommodate the above-said screw to be screwed therein for tightPning or releasing said clamping claw. The merit of this design lies in that it can make one or more sets of the clamp;ng claws firmly locked in order to provide a datum plane during clamping irregular-shaped work pieces, thus facilitating milling or planing the work pieces. Features of the joining structure of the above said clamping claw 1056 and jaw are as follows:
-- the socket seat of the jaw is to support the motion clamping claw for rotative mo~ements, the central position of which has a screw hole 3010;
~- motion clamping claw 1056 has a central ~ole 1057 which is slightly larger than the above-said screw hole;
-- a screw 1057' penetrates through the motion clamping claw to couple with the threaded hole 3010 in the bottom face of t~e socket ~,~
~g seat for providing the clamping claw in order to lock up or release the clamping claw.
Figs. 25 1, 25-2 are the respective top view and side cross sectional view.
Fig. ~6 represents an exemplary embodiment showing the arc-shaped notch 3012 which is concentric to the locus ~f the rotat;o~s of the arc shaped back of the clamping claw and is pro~ided on the back of the jaw to which the motion clamping claw is attached. Said notch 3012 has two widths, of which the width of its face to couple with -the clamping claw is narrower, and its width close to the back of the jaw is larger. The back of each of the clamping jaws 1001 has a spiral hole 1001' respectlvely to accommodate a terraced rod 3014 one end of which has a nu~ of a diameter slightly smaller than the part in a larger width of the a~ove-said arc-shaped notch, the middle section of which has a diameter slightly smaller than its part with a narrow width; and the rear end has a diameter smaller than the spiral in the middle section of said terraced rod to be turned and fixed in clamping claw 1001. A slip-proof limit pin 3013 may ~e added to the arc-shaped notch side of the back of the jaw.
Figs. 26 1, 26-2, 26~3 are the top view, side cross sectional view and the cross sectional view of the middle section.
Fig~ 27 shows the joining structure of the above-said jaw and clamping claw which has further features as follows:
-- the opening side o the arc-shaped notch of the back of the jaw may be clo~ed structure 3012';
-- the arc-shaped slot of the back of the jaw may be in equal length;
-- a rotative cylindrical ring can be added to the middle section in the middle section of the terraced rod to reduce fxiction;
~~ terraced bolt 3014 of the rotata~le handle is exposed outside of the arc-shaped slot ~ 3012 of the jaw seat; and the nut with larger than the arc shaped notch 3012l and rotatable handle to fix the mot;on clamping claw during pos;t;oning;
Figs. 27-1, 27-2, 27-3 are top views, side cross sectional view and the cross sectional view of the middle section.
Figs. 27-4~27-7 illustrate exemplary embodiments of the structure having the clamping claw locking hole, the features of ~hich lie in:
-- the back of semi-circular motion clamping claw 1085 has an arc-shaped slot, along which there is at least a locking hole;
-- it at least has a set of through holes penetrating through the ~ack of the jaw, and said hole has a spiral;
~- there is at least a fixing pin 3022, having a spiral to be inserted into said through hole in the jaw by turning, there~y coupling with the slot in the clamping claw;
-- the free status of clamping claw set 1085 is formed when the end of fixing pin 3022 does not enter the locking hole in the arc-shaped slGt in the back of the clamping claw;
-- the locked status of clamping claw set 1085 ;s formed when the end of fixing pin 3022 : enters the locking hole in the arc-shaped slot in the back of the clamping claw.
Further, in the applications of the conventional clamping vise, the parallel small parts for the sawing-off operations, such as to saw off the screw to become shorter, ~ut the clamp vise of the above-said motion clamping claw cannot effect th~ sid~ clamping on the parall~l work pieces with a radius smaller than that of the clamping claw. The defects are shown in Fig. 28.
To improve the above-said defect, the structure as shown in Fig. 29 is designed by making the functions of this clamping vise more complete to have the function of the conventional flat plate-shaped to side clamp small work pieces and also to have th merits of the motion clamping claw~ In the drawing, motion clamping claw 1001 having an arc-shaped back is coupled to the fixed jaw and the motion jaw respectively, each of motion clamping claw 1001 and the jaw to which said motion clamping claw is attached is at least provided with a semi-hole-shaped notch, during rotative couplingt at a specific position, making said two notches rabbeted to form a hole-shaped structure 3017, and a fixing pin 3016 is inserted and coupled to said hole to make the motion clamping claw set in an unrotatable locked status.
Figs. 29-1, 29-2 are the respective top view and side cross sectional view.
Fig. 30 shows an exemplary embodiment of the central plug of two motion clamping claws effecting the parallel locking. In said draw;ng, the side close to motion clamping claw 1073 of the same jaw has a longi-tudinal notch. The clamping vise set i5 provided withparallel plate-shaped position;ng ~lock pin 3018 to be inserted in the longitudinal notch-in the side close to the two motion clamping claws of the same jaw. The dimension and structure of positioning block pin 3018 is to firmly fix the clamping faces of the two clamping claws of the same jaw, thus forming a straight line or specific angle and then achieving the functions of the `b parallel clamping vise. While the positioning block pin 3018 is remo~ed, it still has the agile functions of the motion clamping claw.
Fig. 30-1 is a top view.

~;~r~

Fig~ 31 illust~ates an exemplary embocliment o~ the combined use of the clampiny claw with an arc-shaped back and the clamping claw with a multi-faced ~ back to be coupled with the multi-~aced socket seat.
As shown in this drawing, two sets of clamping claws 1001 with an arc-shaped back and two sets of clamping cla~s 1003' with a multi-faced back can ~e optionally inserted into the multî-faced socket seats on the back o~ various jaws, wherein clamping claw 1001 is in continuous contact with the multi-faced socket seat and clamping claw 1003' is in close contact with the multi-faced socket seat. When two opposite sets of clamping claws are all clamping claws 1003' with a multi-faced back, they cannot rotate to produce functions the same as those o~ the flat plate-shaped claw. When clamping claws 1003' with a multi-faced back are attached to the same jaw, both o~ them form an unrotata~le straight line or curve angle to match motion clamping claw 1001 for clamping the work pieces ïn a multi-faced way.
Features of the structure of the combination-type clamping vise of the above-said motion clamping claw and the clamping claw with amulti-angular back having a multi-angular-shaped socket seat are as follows:
-- the clamping vise has four sets of clamping ~5 claws, the clamping jaw socket ~eats on their jaws having at least two sets of non-arc-shaped polygons;
-~ at least two sets of the clamping claws with an arc and at least two sets of the clamping claws with a polygonal back to notch the respective polygonal socket seat are set in the non-arc-shaped polygonal socket seats respectively;
-- the clamping claws are the ones with their positions mutually exchangeabla and having a polygonal back and opposite to the clamping claws with an arc ~ack or the clamping claws ~ 2 having a back in the structure the same as the former.
~ig. 31-l is its top vlew and Fig. 31-2 is its - side cross sectional view.
Fig. 32 shows an exemplary embodiment of the single-side locking motion clamping claw formed by the flat plate-shaped clamping claws evenly extended by the clampiny faces of the motîon clamping claw. As show~ în said drawing each of the ixed jaw and motion jaw has two sets o the arc-shaped socket seat with an arc-~aced back respectively, said four sets of motion clamping claws 1088 being coupled by a dovetail slot thereon respectively. Clamping claw set 1088 extends, along the non-adjacent sides ~the outer sides close to the jaw~ of the fixed jaw and motion jaw, a section of the flat plate clamping claw structure as shown in Fig.
2-31. In said drawing, the front of semi-circular clamping claw 1058 has two screw holes in which flat plated clamping claw 1059 longer than the width of the claw face is locked. The feature of the joining of both of them lies in that their one end is flat and with the close side to the semi-circular clamping claw, their other end extends along the outer side of the clamping claw close to th jaw to avoid the sliding of the semi-circular clamping claw, when said semi-circular clamping jaw clamps with its sides small work pieces of a diameter smaller than that of the clamping claw.
Features of the clamping claw sets are as follows:
-- the non-adjacent sides of the motion clamping claw sets have the structural extension of the flat plate-shaped clamping claws;
-- the outer rim of the jaw seat and the motion clamping claw appear in a flat plate-shape and when the clamping claws are in a sideway line they ~ecome clo~ely coupled together.

~Z~ 3 Figs. 32-1, 32-2, 32-3 are the respective top ~iew, side cross sectional view and ~ront partîal cross sectional view of this structure.
~ Further, said motion clamping claw 1088 can be integrally formed as shown in F;g. 32-4, or the semi-circular clamping claw'1058 as shown in Fig. 32-5, and the flat plate-~haped clampïng claw 1059 in a width larger than that of the clamping claw face, which is joined by screw 1060 in way of slightly deflecting to the outer side. The outer side angle of th~ ~aw limits the outward turning angle of the above-said motion clamping claw.
Fig. 33 shows another e~emplary embodiment, in which both sides of the fixed jaw and clamping jaw have a separately installed flat board-shaped clamping claw 1082, and between the fixed jaw and the clamping jaw, four sets of clamping faces oppositely formed ~y the motion clamping claws with an arc on their back. The flat plate-shaped clamping claw on the outer side is used to clamp a small work piece, while the middle motion clamping claw set is used t~ clamp an irregular-shaped work piece.
Fig. 33-l is the top view, Fig. 33-2 is the side cross s~ctional view, and Fig. 33-3 is the front partial cross sectional view. Their exemplary applicatory embodiments are the same as those shown in Figs. 32-6 32-8.
Fig. 34 shows an exemplary embodiment of the installation with four sets of motion clamping claws and single having a flat plate-shaped clamping claw on its single side, their ~unctions and structure being the same as those shown in Fig. 33.
Fig. 35 shows the inwardly bent flat board-shaped clamping claw 1066 and the single;set motion clamping claw 1089 which are installed in a jaw, said inwardly bent flat board-shaped clamplng claw being set on the jaw with an arc-shaped socket æeat to force the combined structure of the motîon clamping claw and fixed flat plate-shaped clamping claws for use, the - inwardly bent face and the motion clamping claw have the ability to clamp irregular-shaped work pieces, and flat board clamping claw 1066 can maintain the convenience to clamp small work pieces sidewisely.
Fig. 35-1 is a top vie~.
Fig. 36 shows the inwardly bent flat plate-shaped clamping claws 1066 provided on both sides of the jaw and the single-set motion clamping clamp 1089 which are installed on a jaw to have functions the same as those shown in Fig. 35 for clamping irregular-shaped work piece and effecting sidewise clamping, and Fig. 36-1 is its top view.
Summing the above up, feature~ of the combined structure of the above-said motion clamping claw and fixed clamping claw for use lie ln:
~- each jaw set has at least a set of opposite motion clamping claws and at least a set of opposite fixed flat plate-shaped clamping claws;
-- the flat board-shaped clamping claw and the motion clamping claw can bend and extend along the direction of the non-clamping face.
Fig. 37 shows the multi~stage combination-type flat plate-shaped clamping claw. The insertion-type motion clamping jaw 1068 as shown in Fig. 2-36 clamps the irregular-shaped work pieces, Fig. 2-36 being the structural exemplary embodiment of this insertion-type motion clamping claw. Stage-type flat plate-shaped clamping claws 1067 and 1067' are pxovided on the ~ront of the clamping jaw shown in said drawing. The sides close to the clamping claws form slot 1069 larger at its side close to the jaws and smaller at its outer part, Said jaws 1067 and 1067' coare closed end are joined.
Motion cla~ping claw 1068 has a clamping face ~apered ;
C

s~t~

backward, its end section having a vertical round column structure to be inserked into slot 1069 for left and right swings to clamp irregular-shaped work pieces, and when they are removed, the configuration is the same as the con~entional vise. Features of the above-said motion clamping claw structure are as follows:
-- on the clamping side of the jaw, At least a flat plate-shaped clamping block is provided thereon and has at least a tapered vertical open slot. At least two flat plate~shaped clamping claws are c~m~ined at the adjoining place between which at least there is a vertical open slot tapered outward.
_ -- Features of the insertion-type motion clamping claw 1068 lie in that its front side is the flat plate-shaped clamping face, on the back of which a vertical back-shaped structure is provided tapered inwardly to vertically slide into the tapered outwardly vertical open slot of the above-said flat plate~shaped clamping claw for agile swinging and to avoid slipping off from the front.
Fig. 37-1 illustrates an exemplary e~A~hnent of Fig. 37.
Fig. 38 shows the horizontal clamping positioning and locking structure of said motion clamping claw, in which a locking transverse rod 3019 passes through the transversP hole 3019' in the jaw body to couple with the transverse arc-shaped slot on the back of the clamping claw set. Features of the positioning locking structure of this clamping claw set lie in:
-- the jaw seat has a transverse hole 3019' including a part of it overlapping the socket seat;
-- the back of mo~ion clamping claw 1083 has a transverse arc slot;
-- a locking transverse rod 3019 is inserted through said transverse hole 3019' in the ~5~1~
- 7~ -jaw sea-t. ItS one end has an operat;onal and control handle 1107. Its middle section has at least a notch 3019 ", while ~he middle part o ~ransverse rod 3019 oppo~ite to the transverse arc slot in the motion clamping claw has an arc slot to accommodate the positioning to ~e turned therein from the jaw forlimiking the transverse posîtions of the transverse rod;
-- the Eree skatus of motion clamping claw 1083 appears when the transverse slot on its ~ack couples with notch 3019'' in locking transverse rod 3019;
-- the locked status of the clamping claw appears, when the transverse arc slot on its back couples with the non-notch side of the locking transverse rod;
-~ operations of the locking transverse rod include transverse pulls or angular dis-placement rotary operations.
Fig. 38-1 is ;ts top view, and F;g. 38-2 is its side cross sectional viewO
Fig. 39 illustrates another structure of the motion clamping claw when positioned and locked. A
U-shaped lockîng pin 3021 is inserted in the locking hole in motion clamping claw 1084 to efect the functions of the flat board-shaped clamping claw or ; of clamping irregular-shaped work pieces. Features of the above-said positioning locking structure of the clamping claw set are as follows:
- clamping claw 1084 ~n the jaw has at least two holes;
-- at least a set of the U-shaped locking pin~ 3021 is inserted and penetrates through the above-said hole for positioning and locking the clamping claw;

75.

-- the locked status of clamping claw 10~4 include~ the positioning locking ~hat the clamping face form~ a transverse ~traight line or a fipecific angle in a locked way.
Fig. 39-1 is itg top view an~ Fig. 39-2 i5 i~8 ~ide cross sectional view.
Fig. 40 ghows a de~ign wherein the ~eritz are gained by means of the ~lat plate-shaped clamping claw functions being cau~ed by the mutual interference-type angular limits of the motion clamping claw~. The structural features of clamping claw set 1006 lie in:
-- the near sides of the se~i-circular clamping claws on the 6ame side hava a proper cut-off : ~tructure in a curve angle or curve line;
-- the curve angle on the curve line in the adjoining sides of the ~emi-circular clamping claw sets on the ~ame side can form interfersnce~ and limit~ on the formation of a convex shape on the near side of the clamping claw set~ without any limits on the formation of a concave shape on the said near side, when the clampiny claw Aets on the ~ame side form a tran~verse straight ~ line.
: 25 Figs. 40-1, 40-2 are its exemplary embodiments.
~ig. 41 show~ the structure of the middle connection type cla~ping claw 1061. The near ~ides of two semi-circular clamping claw 1061 mutually rab~et and a motion pin 1062 penetrates through the middle of their rabbe~ed part~ for joining ~hem together~ The two clamping claw se~s may uBe a common arc shaped socket 6eat to achieve a lower frictional damping and for the sake o convenience. If and w~en two such set5 are joined to replace the above-said ~et of semi-circular clamping claws, multi-point contact can thereby be provided. The o~

76.
bottom of the jaw in ~he middle of the 80cXet ~eat has a longitudinal slot to couple with the ~otion pin 1062 80 as to limit the locus of motion pin lOÇ2 during the adjustment and driving ~f the cl~mping claw.
Fig. 41-1 is its cro~s sectional view.
Besides, the above-said structure can further be the exemplary embodiment as shown in Fig. 43 con~tituted ~y th~ 3-stage-type motion clamping claw of the connection-typ~ clamping claw. For the middle clamping 1~ claw 1063 shown in said drawing, its two sides and clamping claw 1061 ~utually rabbet. Middle clampin~ claw 1063 may be in a different design ~election such that the two sides clamping claws are of the samP ~ize or o$
slightly larger ~ize. In the jaw bottom in the middle of 1~ the socket seat two lines of longitudinal slots are provided to couple with motion pin 1062 50 as to limit the locus of motion pin 1042 during the adjustment and driving of the c~amping claws.
Fig. 43-1 is its cross sectional view.
Besides, Figs. 2-32, 2-33 6how the con~ection-type clamping claw s~ructure~ Its further features lie in that the connection ~ide has a limiting curve angle or curve line to limit the clamping claw 6et only effecting a co~cave f~rmati~n and for~ing a transverse straight line but i~possibly protruding out.
Fig. 42 ~hows an exemplary embodiment of the two-stage clamping claw having a limiting curve angle.
The joining side of the two sets of clamping claws has a longitudinal curve line but a ~traight line is for~ed on the two claw faces to mu~ually and closely rabbet togethe~.
Fig. 44 shows an exemplary embodiment of the thre0-sta~e clamping claw with a limiting curve angle.
~he adjoining side of its three sets of clamping claws has a longitudinal curve li~e, and a ~traight line i6 formed on the two claw faces to mutually and closely rabbet as its feature. The above-said clamping claws include ~he connection-type structure, th~ fe~tures of which lie in:

~9 6~

-- the adjoining ~ide of at leas~ two semi-circular clamping claw~ i~ in a cros~
coupliny and ha~ a through hole through which a motion pin penetrates and a secti~n of said motion pin protrude~ out of the lower end of said through hole;
-- the end of the cro~s c~upling end of the semi-circ~lar clamping claw has an arc inverse angle concentric t~ ~aid through hole, -- the ~ocket ~eat o~ the jaw ~eat has an arc-~haped support face of a diameter larger than that of the arc on the back of the clamping claw;
__ a long slot extends lengthwisely from the middlP part o the bottom of the ~ocket seat to couple with the extended ~ection ~ the motion pin;
: -- the mutual connection ~ide of the clamping claws has been provided with a curve angle or curve line to limit its bending m~tion s~ope as inwardly concave and f la~ and ~traight so as to clamp irregular-chaped worX pieces and ~o clamp smaller work pieces by its ~ides.
Fig. dsS illustrates that for the two ~ets of the cc~nnection-type clamping claw fitructure ~hown in Fig. 41, the back arc is further changed to the ~lat plate shape to enlarge its bent angle ~imilarly, and the action of the l~ngitudinal ~lot 3023 is changed to and replaced by the long filot-type hole in both side~ of the clampinq claw.
Fig. 2-34 shows ~he structure of thi~ bendable multi-6tage-type flat plate-shaped clamping claw. In said drawing, clamping claw 1064 ~ay be integrally formed or 35 combined with 1064', and in it~ middle part, ther~ i8 through hole to ~e mu~ually matched by motion pin 1062.

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Each of its two sides has a long ~lot-type hole 1065 respectively through which a link rod 1062' penetrates raspectively, said ~wolink rods ~imultaneously joining the jaw to bear against the clamping pressure~ ~he merit of this design lies in that when i~ clamps a work piece with a protruded part in the middle of said work piece, it can form a bent curvature face to increase the clamping p~ints.
Fig. 45-1 is its cross sectional view.
Fig. 47 illustrates that as to the three sets of the connection-type clamping claw structure ~hown in Fig.
43, the back arc i~ changed to the flat plate-shape to . enlarge its bent angle in the ~ame space, and the action of longitudinal slot 3023 is ~hanged ~o and replaced by long ~lot-type hole 1065 in the two side~ of the clamping elaw. The ~ain features of the above-said clamping claw including the bendable multi-stage-type flat plate clamping claw structure are a~ follows:
-- at lea~t for the two-stage flat plate clamping claws, their joining place has a ~0 mutually crossing structure with a through ; hole thrvugh which a r~und pin 1062 penetrates 7 -- the jaw is of a Y-type structure, its both sides extend but its middle part concaves inward, and the ends of the extensions ~f the two sides of the jaw crossly couple with the outermost two eets of the multi-shape flat plate clamping claws and are then penetrated through by a round pin 1062;
-- the outermo~t two 8et8 of the multi-stage flat plate clamping claws have a transverse long slot to couple with the round pin 1062' in the jaw;
-- each flat plate clamping claw unit may be integrally ~or~ed or ov~rlapped or laminated in the form of ~heets.

.~, ~,.
... .

79.
Besides, the above-said mutually cro3~ coupling structure, the bendable multi-stage flat plate shaped clamping claw may al~o be that like the above-said multi-~tage connection-type clamping claw, wherein there further mutually extends a limiting structure~ A~ shown in Fig. 46 the two-sheet-type clamping claw mutually cross coupled ~ide has an extended ~ection 1070, when the clamping face~ of various flat plate-~haped clamping claws form a straight line. The extended section 1~70 of various clamping claws is tightly ~ecured to the back of the flat plate clamping claw that it cross couples by limiting the middle section of aid bendable ~ulti stage flat plate-shaped clamping claws to concave inward, or to form a straight line without any protrusions, thus achieving the ability of the motion clamping claw to clamp irregular-shaped work pieces, and may be also like the flat plate-shapad clamping claw to clamp ~mall work pieces by its sides. Fig. 46-1 is a cross sectional view of the embodiment shown in Fig. 46.
Fig. 48 shows an exemplary embodiment of the clamp vi e formed by joining the three sets o~ flat plate-shaped clamping claws, each of their mutually cross coupled sides having a structure of the limiting section 1070 respectively. Its actions and applications are 2~ similar to those previously described. Fig. 48~1 is a cross sectional view of Fig. 48. Resides, Figs. 45-48 illu~trate exemplary embodiments in which the coupled faces of the Y-type fixed jaw 1122, the Y-type motion jaw 1222 and the multi-stage flat plate-shaped clamping claw : 30 are the ja~ face wi~h a concave arc in its middle part and a transver~e line on its both ~ides. As shown in Fig.
46-2, when it clamps a small work piece by its ~ides, the clamping claw is directed to form a 6tabili~ed parallel clamping (the exemplary embodiment o$ the work piece as 35 sho~m in Fig. 46-4). Fig. 46-3 is a cross ~ectional view of the ~tructure shown in Fig. 46-2.

80.
With regard to the auxiliary displacement~ of the jaw seat, ~he above-said v~rious e~emplary embodiment~ of the clamping structure~ are only li~ited to the displacements of the clamping claws to adapt to irragular-6haped work piece~, and the adaptable ~cope is still limited. In particular, it i6 rather hard to adapt to work pieces having larger irregular-3haped profiles, or it i5 impossible to make all clamping claws tak~ part in clamping guch a work piece (as shown in Fiq. 50-5~, and it 10 i8 also difficult to adapt the work pieces with a rectangular profile (a~ ~hvwn in FigO 49-53, to ~urther improve its applicable scope. m e better ~ean~ are to make the jaw ~eat efect the tran~ver~e drive, swing and elevational motion. Figs. 49-6, 50-6 illustrate exemplary 1~ embodiments of thç improved clamping work. Various design changes concerning the above-said jaw structure will be described as follows.
Fig. 49 shows a vise ~tructure, in which an auxiliary jaw 1225 that can make transver~e displac~ments i6 provided between its motion jaw 1201 and the motion clamping claw, the construction of which is that the coupled face of auxiliary jaw 12~5 and motion clamping claw 1201 is in a straight line coupling. $he dove-tail structures mutually rabbet and couple and also effect the opposite sliding movements. A limit transverse ~lot is provided in the coupled face of the dovetail slots of the auxiliary jaw and motion jaw, and two longitudinal screw holes 3026 are provided in the motion jaw tv accommoda~e the limit ~crews 3027 to be turned therein for limiting their transverse displacement quantitie~. Auxiliary jaw 1225 has two sockst seat~ having an arc-~haped back to install motion clamping claw~ lO01, thus effecting the clamping of irregular-shaped work pieces ~imultaneously in c~njunction with motion clamping claw 1001 on fixed jaw 3S 1101.
Fig. 49~ its ~op view; and Fig. 49-2 is its E3ide cros~ sectional view.
Fig, 49-3 illustrates the motion jaw having a cc)nca~e transverBe parallel slot ~or dovetail slot ), into which the terraced-shaped back o~ transverse displacement auxiliary jaw 1225 is inserted, the upper ~ide of its insertion section having a transverse limit slot having two closed ends, in which the limit screw on the motion jaw is turned to limit itB transverse displacement quantities.
o Fig. 49-4 i8 its 6ide cross sectional view.
Fig. 50 shows an exemplary embodi~ent ~f the installed rotatable auxiliary jaw 1226. The coupled face of said jaw 1226 and motion jaw 1201 i8 in an arc coupling, and the arc face radius _ 1/2 of the width of 15 the clamping jaw. The way of its coupling is that the arc-shaped dovetail structures mutually rabbet and couple and also effect oppoRite ~liding movements. The coupled face of the dovetail slot of the auxiliary jaw and the motion jaw has a limit transverse 610t, and two transverse 20 screw holes 3026 are provided in the motion jaw to acco~modate limit screw 3027 to be turned therein for limi~ing its turning angle. Auxiliary jaw 1226 has two socket seats with an arc-shaped back to set up motion : clamping claws 1001 for clamping irregular-~haped work pieces simultaneously in conjunction with motion clamping claw 1001 on fixed jaw 1101.
Fig. 50-1 is its top view; and Fig. 50-2 is its side cross sectional view.
Fig. 50-3 illustrates the motion jaw having a concave transverse arc-shaped ~lot (or dovetail slot), in which the terrace-shaped back of rotatable jaw 1~26 is inserted, the upper 6ide of its insertion section having a transverse limit elot having two closed ~nds in which the limit ~orew on the motion jaw is turned to limit its turning angle.
Fig. 50-4 is its side cross sectional view.

Z~

82.
Figs. 50-5 and 50-6 show the jaws of the vi~e closing in on an irregularly ~haped workpiece.
Besides the exemplary embodiments ~hown in the above-saîd Figs. 49 and 50, the auxiliary jaws 1225, 1226 may also b~ between the fixed jaw and the clamping claw, or further on the motion jaws and the fixed jaws. A
further design of the displacement structure of th~
above-said jaw ~eat is that the motiDn j2W itself is a rotatable ~ructure to achieve the enlargement of its ~pplicatory scope with respect to irregularly-shaped work pieces, and various exemplary ways are described as follows.
Fig. 51 is a structurally perspective graphic view of a round sliding column w~ich couples with the guide rail by the motion jaw and is used for the motion jaw to rotate.
Fig. 51-1 is an exploded view of the bottom structure of its motion jaw.
Fig. 51-2 is its t~p view, Fig. 51-3 is its side cross ~ectional view.
Fig. 51-4 is its front cross sectional view.
In Fig. 51-1, the bottom of ~otion jaw 1201 has a round coupling column 2101 to couple with the guide rail.
Fixing pla~e 2301 provided on its bottom is turned and 25 fixed by screw 2401 in screw hole 2601 in coupling column 2101 to join both of them. The back of motion ~law 1201 has a guide rod coupling hole 2801 to accommodate guide rod 1601, and the guide rod positioning screw i~ insert~d and turned into guide rod positioning screw hole 2701 on 3~ its bottom, thus making the gu;de rod positioned. The combination of ~his tructure makes the jaw seat slide back and forth on the guide rail by the round coupling column and also effect6 the rotative ad~ustments, thereby increa~ing the adaptability of the motion clamping claw 35 ~et thereon for irregular-~haped work piece~.

3L2~$~

~3.
Fig. 52 illus~rates another exemplary embodiment of the above-said rotary structure of the ~otion jaw. In this ~tructure, parallel glide block 2202 of motion jaw 1201 to be coupled with ~he guide rail is a separate design. The two sides on the bottom of parallel slide blocX 2202 have e2tended edges to couple with the bottom of the ~lide rails. A round column iA provided on ~aid motion jaw, the upper part of said round column having a section with threads, and a vPrtical coupling hole 303~ is provided at a place close to the back of the motion jaw and is a two-stage terraced hole with a larger diameter in the upper part and a 6maller diameter in the lower part ~ection, being equal in length to or slightly shorter than that of the non-threaded section of the round column on parallel slide block 2202 for agile rotation. Both of them are turned and tightened by nut 2203 and wash~r 2204 on the threads at the top of the round column.
Fig. 52-1 is th~ top view of this structure; and Fig. 52-2 is its side cross sectional view.
Besides, the above-said joining way may also be such that the buckle ring (a~ shown in Fiy. 52-3) is used or a screw is used in the screw hole provided on the end of the round colu~n for firmly locking.
Fig. 53 shows the reverse structur of that 25 illustrated in Fig. 52, wherei~ a central column 2207 is provided on the bottom of motion jaw 1201. The end of the central column has a buckle ring slot and ~wo sides of the bottom of parallel slide block ~205 have extended edges to couple with the bottom of the slide rail. Parallel slide 30 block 2205 has a central hole 2206 to accommodate central column 2207 on the bottom of the above-said motion jaw 1201 to penetrate therethrough, and both of them are joined by washer 2208 and outer buckle ring ~209 for the agile ro~ation of ~he motion jaw.
Fig. 53-1 is its top view. and Fig. 53~2 is its side cross sectional view.

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8~4.
A further 6imple design change o~ the joining way between both of them is featured by the provision of threads or a screw hole on the end of central column 2207 for firmly locking and joining by a nut or ~crew. Fig. 54 illu~trates another exeMplary embodiment of the rotary structure of the above-said ~otion ja~ and is applicable to the structure of the post-or-tube-~haped parallel rod-type guide rail, as ~hown in the three~dimen~ional view in Fig. 54. Its main feature lies in that the bottom of the motion jaw is in an I-shaped structure which has a transverse notch ~lot 3032 to couple with two parallel rods 3031. Both of the parts above and below æaid transverse notch 610t 3032 closely stick on the parallel rods. The distance between the inner walls (acing notch slot 3~32) of the left and right ~lots is _ the di~tance between the inner sides of two parallel rods 3~31, and the distance between the other 6ides o the two transverse notches is slightly larger than that of the two parallel rods, its ~lightly lar~er value maXing the mo~ion jaw ~ot ~lip off even when the motion jaw inclinedly 6traadles the two parallel rods due ~o its left and right ~wing and per~its elamping o~ parallel or unparallel work pieces;
Fig. 54-l is it~ top view; and Fig. 54-2 is its side cross se~tional view.
Fig. 54-3 i~ its front cross sectional view. In thi~ exemplary embodiment, the two parallel rods are o the round bars. In applications when a ~quare or other geometric shape is coupled, the inner side of the two transverse notch slots ha~ a 6ectional arc with a concave middle part and in an outwardly tuppeted shape to adapt the locus of the swing ~etween the guide rail60 In the exemplary embodiment of its 6~uare guid~ rail as shown in Fig. 54-4, the manner of joining between the motion jaw and guide ~crew is that the joining hole between them and the larger gap between the nuts are for the swinging of the motion jaw.

:i , .. .

~Zti~ 3 B5.
Fig. 55 shows this ~tructure ~o be applied to the exemplary embodiment where the conventional flat plate-~haped clamping claw forms tc~ clamp parallel or non-parallel work piece6 in a swinging manner.
Fig. 55-1 is its top view: Fig. 55-2 i~ Ride cross ~ectional view; and Fig. 5~-3 i~ itB front cro s~ctional view.
Fig. 56 illustrates one of the design changes of ~he structure ~hown in FigO 54~ wherein the tran~Yerse parallel ælot hole 3~33 in the bottom ~eat of the motion jaw covers and couples the two parallel colu~-~haped guide rails. The hei~ht of the transver~e parallel slot hole closely parallel~ the upp~r and lower parts o the ~uide rail. The width of said ~lot hole i~ larger than the distance between the outer ides o two guide rails 3031, 80 this larg~r gap ie for motion jaw 1201 for hori~ontal ~winging adju~tment6 to clamp parallel or unparallel work piecesO
Fig. 56~ s front cross sec~ional ~iew.
Fig. 57 represent6 a gecond de~ign ~hange of the ~tructure shown in Fig. 54. Its feature lies in that various guide rail~ in a parallel ~tructure separa~ely couple with the clo ed-~haped tran~ver~e parallel ~lot holes 3034 resp~ctively. Thi8 ~lot hole closely eticks on 2~ parallel guide rail~ 3031, ~nd i~ width i6 greater than that of the guide rail~ for ~otion jaw 1202 to effect the hori~ontal swing~, ~hereby clamping parallel or unparallel worX pieces.
Fig. 57-1 is it6 front view~
Fig. 58 illu6~rat~ ~ third design chan~e of the ætructure shown in Fig~ S4. It~ feature lies in that it has a singl0 plate-type guide rail 3035, and the bottom of mo~ion jaw 1201 has the above-s~id transver6e ælot hole 3033 ~108ely stuck on the upper and lvwer part~ o~ the ~ingle plate-type rail. The width of it~ ~lot hole is greater than that of ~ingle plate-type guide rail 3035, so B6.
this larger gap is ~o enable motion jaw 1201 to effect hori~ontal swings to clamp parallel or unparallel work piece6.
Fig. 58~1 is its ~ront cross sectional view. $he above-said transverse parallel slot holes can al~o have a respective ~0 bent angle-shaped tructure protruding to the ~on-cla~ping side to be clamped on the upper and lower siaes of the single pla~e-type guide r~il for enhancing its ~tability.
Fig~ 59 shows ~he transverse parallel hole slot 3033 on the bottom of the motion jaw in a downward covering shape, and the bottom al80 has a notch structure 3036.
Fig. 59~ its front cro6s sectional view.
Be~ides, the parallel 810t hole 3034 shown in Figs. 56, 57 further has a stabilizatio~ plug hole structure. ~his ~tabilization plug 3037 has a hole slightly larger ~han ~he parallel post or pipe to smoothly and reciprocatingly slide, and its outer surace has a section which i8 conic in a shape mutually complementary to the flat ~haped hole, and i6 cut at least into two vanes ~o be in6erted into the flat 610t hole in the motion jaw. The lenqth of said ~tabilization plug is such that after eaid plug is inserted into the flat holes, it ~till ~lightly projects over the other ~ide of the flat plate-shaped clamping board, and the installation direction of the tabilization plug is optionally selected. If the upper lower, left and right part3 o the coupling hole in the bottom 8eat of motion jaw 1201 are larger ~han the structure that the two parallel p~5t8 ~erve as the guide rails for the motion jaw to universally adju~t the direc~ion, the stabilization plug must be an embracement ~ype s~ructure at least embracing above 180. It~ features are a~ follows:
-- it has a hole lightly larger than the parallel column or pipe to ~moothly and reciprocatingly ~lide;

~' 87.
-- its outer ~urface has a conic ~ection which is in a ~hape mutually complementary to the round hol~ and is at least cut into two vanes to be inserted into the larger round hole slots in the motion jaw;
-- the length of said stabilization plug i~
such that a f ter b~ing inserted into the hole, it ~till ~lightly projects over ~he other ~ide of the flat plate-6haped clamping board;
-- the coupling hole of the above-said motion jaw may be a flat or round one as an inclined conic-shapea hole which is stabilized ~y ~he parallel mutual complementary shaped stabilization plug, -- the above-~aid stabiliza~i~n plug may be set in a reveree direction.
By the same token, ~or tha exemplary embodi~ent6 shown in Figs. 56, S8 and 59, the ring can be sl~eved between the ~eparate guide rail and the transverse parallel slot hole to have a similar struc~ure: therefore, in applications, : this stabilization plug 3037 i5 inserted into transverse parallel ~lot holes 3033, 3034, 3036 to make the motisn jaw not swinging, and when the stabilization plu~ gets off the transverse parallel ~lot hole, the motion jaw can maXe angular adjustments to clamp irregular-shaped work pieces.
Fig. 60 illustrates an exemplary embodiment of ; the above-said mo~ion jaw with the stabilization ~tructure to be applied to the flat plate-shaped clamping claw.
Fig. 60-1 is its top view; a~d Fig. 60-2 is its side cross sectional view.
Fig. 61 ~hows an exemplary embodiment of the above-said motion jaw with a s~abilization structure to the flat plate-shaped motion cl2mping claw.
3~ Fig. 61~ it~ top view; Fig. 61~2 i~ its side ~ross sectional view.

rs ~2~
4B.
Besides, when it clamps the irregular-shaped work pieces, the three-dimensional irregular-shaped work pieces as shown in Figs. 62-62-3 are often encoun~ered. To precisely clamp this kind of work pi~ces, in addition to the above-said various exemplary embodiments. the following various structural design e~bodiments are used to achieve this objective.
Fig. 63 illustrates one of ~uch structural design embodiments. In this drawing, the features of it~ main structure lie in that between the motion jaw 1201 and round slide block 2101 or parallel slide block of the slide guide rail, each of them has cross-rabetting arms 2209, 2211 respectively which can el~vate or dip forward and backward and are protruaing out in their middle part and tapered upwardly in their front and back eides. Each said arm has a through round hole to be joined by a join pin 221~ and a buckle ring 22130 When the ~lide block is in a round shape, it combine~ the forward and backward elevational ~otions to form a universal clamping, and when the slide block is a parallel slide block, it may form the forward and backward deviation and inclination to clamp an inclined conic face.
Figv 63-1 is a cross sectional view of the slide bl~ck in a round shape.
Fig. 63-2 iS a cross sectional view of the lide blocks in parallelism.
Fig. 63-3 is an exploded view of the round slide block structure.
Fig. 63-4 is an ~xploded view of the square slide block structure.
Figs. 64-64-4 illustrate exemplary embodiments applied to the flat plate-shaped clamping claw. Except for the clamping claw, the remaining variou~ structures are the same as those shown in Fig. 63.
Figs. 65-65-4 show an exemplary embodiment o~ the str~ctures ~hown in Fiqs. 63, 64 further having a .~, ~3C~
structure to limit the elevational angle~. In thie drawing the transver~e joining pin 22~2 forma the forward and ~ackward elevational and inclinational center, its bottom close to the driYe guide rod ha~ an elevational motion limit plane 2213 which contacts the guide rail at the maxi~um limit angle to limit its ~aximum work angle.
Figs. 66-66-4 illu~trate the exemplary embodiments showing the elevational motion ~tructure being applied to the flat plate-shaped clamping claw.
1~ Fig. 67 shows an exemplary e~bodiment of the structure o~ the motion jaw having a ball-shaped joining structure for universal adjustments; in this drawing, motion jaw 1201 has a vertical central hole 2219, ~he bottom of said hole 2219 ha~ing a ball-shaped and up-shaped socket seat 2216~ and a ball-shaped column central rod 2214 with a ball-shaped head in its front ~ection, and a spiral in its end penetrates through saia socket ~ea~ 2216 and also ~aid round column-æhaped bottom ~eat 2101 and then nut 2217 and sprin~ wa~her 2218 firmly lock said central rod 2214; and seal plug 2215 is u~d to Real off vertical hole 2219 in the motion jaw to avoid the falling of scraps or chips.
Fig. 67-1 is its æide cross sectional view. As seen from this drawing, the ball-shaped ~ocket eat on the 2~ bottom of the motion jaw protrudes out of the bottcm face of the jaw, so the above-~aid structure makes the motion jaw effect universal swings with the ball-shaped head of the central column 2214 having a ball-shaped column in the center to clamp various work pieces in different 6hapes.
Further, as ~hown in Fig. 6~, the side close to the drive guide screw on the bottvm o~ the motion jaw has an elevational motion limiting plane to contact the guide rail at a set maximum elevational angle and to limit the maximum work angle. Additionally, in the above-said rotatable motion jaw 6tructure, the manner o~ joining its guide ~crew 1601 and ~otion jaw 1201 includes: ~he motion .
, . .

9o ~
jaw seat has a hole 2220 to provlde the space ~or ~he left and right 6winging dif;placements of the guide ecrew and to accommodate guide 3crew 1601 penetrating therethrough: the end of guide gcrew 1601 has a ring-shaped con~ave 610t 2221 to couple with ~crew 2501 on the ~otion jaw; ~r a vertical hole in the end of the guide scxew to accommodate the pin or rod vertically installed on the motion jaw to penetra~e ~herethr~ugh, thus making the rotatable jaw effect a swinging coupling. The coupling structure of the r~tatable and elevation~motion universal swinging motion jaw and drive structure include one end of guide ~crew 1601 having a ball-body-~haped structure 2226. Motion jaw 1~01 has a vertical through pin hole 2228 having a ~mooth round hole 2227, in which a pin 2229 is provided to penetrate through the joined ball body, and drive rod through fixing enclosure 2230 having a ball-shaped arc face is in~talled on the guide ~crew and is locked in Ccrew hole 2232 in the back of the motion jaw to join the arive rod and the motion jaw. Additionally the above-said ball body and the ~nd of the guide screw may al~o have threads for coupling.
The above structure formed by the above-~aid swinging motion jaw to clamp the irregular-~haped work pieces may also be further formed in such a way that elevation-motion adjustable auxiliary jaw 3101 i8 set between mo~ion clamping claw 1001 and motion jaw 1201 or ixed jaw 1101, ~uch that the m~tion clamping claw and the elevation-motion adjustable auxiliary jaw 3101 have ~he ability to clamp the work pieces in different ahapes.
Fig~ 68 shows another exemplary embodiment of this design. In this drawing, 1101 is the fixed jaw, 1102 i8 the motion ~aw, and elevation-motion auxiliary jaw 3101 which is tr2nsverRely set on motion clamping claw 1001 and fixed jaw 1101 and motion jaw 1201. It~ back i~ in an arc-shaped round c~lumn. Its fron~ ~ide ha6 two arc-~haped socket seats 1301 to set motion clamping d aw 1001. 'rransverse semi-circular ~lot 3102 of motion ~aw 1201 is transversely insexted in elevation-motion auxiliary jaw 3101, its round hole-~haped txansverse slot 3102 to be transversely inserted into the elevation-motion auxiliary jaw 3101, and its round hole-shaped transverse slot is larger t.han 180 to avoid the auxiliary jaw ~lipping off from the front. ~he ansle between the front protruding part of said elevation-motion auxiliary jaw 3101 and the center of the ~ircle is smaller than 180 for upward and downward elevational motions. The botto~ has a limit slot 3103 wi~h its two ends closea, and limit scre~
3104 whi~h i5 of a diameter or width maller than that of the limit slot is jet in screw hole 3105 on the bottom of fixed jaw 1101 or motion jaw 1201 to limit its left-right up-and-down slide positions withou~ hampering left and right slide motions and up-and-down elevational motions.
Limit pin or screw 3104 ca~ be tightened and released to adjust the tightly pressed positioning ~r agile sliding.
Fig. 68-1 is its top view, and Fig. 68~2 is its ~ide ~ross ~ectional view.
Fig. 69 illustrates an exemplary embodi~ent o~
~he above-said exemplary embodiment further having a round coupling block. In this drawing an eleva~ion-motion adjustable auxiliary jaw 3101 is set between the flat plate-shaped clamping claw and motion jaw 1201 or fixed jaw 1101. The feature~ of its structure are ~imilar to those of the exemplary embodiment shown in Fig. 68;
however round coupling block 2101 iB set between it and the guide rail to make the motion jaw effect, the horizontal angular displacement adjustments.
Fig. 69-1 is its top view, and Fig. 69-2 is its ~ide cross sectional view. Although various de~ign embodiments for clampin~ worX piece~ in different shapes are practical to achieve ~imilar func~ions at very low costs, following is a description wherein variou~
combination ~tructures are intsoduced. qh~ design ~G~

92.
embodiment~ of these combination etructures are such that a combination of the flat plate-ehaped clamping claw and the motion clamping claw se~ in oonjunction with t~e rotations of the jaw make the following combinations of variou~ ~tructures, thereby achieving the object to reduce the number ~f the motion claws ~o aæ to r~duce coæt6.
Fig. 70 ~hows an exemplary embodiment wherein the fixed 3aw has the flat plate-~haped clamping ~laws, the 1~ ~otion jaw has the ~otion clamping claw~, a~d the coupling block the ~o~ion jaw, and the guide rail i~ of a ~quare or round 6hape.
Fig. 70~ ita top view.
Fig. 70-2 is its side croqs ~ection~l view.
Fig. 70-3 is its front cros~ ~ectional Yi~W, Fig. 71 shows a motion jaw havin~ a universal adjustment jaw seat on which the motion clamping claws are provided, and the exemplary embodiment ~how~ the ~i~ed jaw having the flat plate-shap~d clamping claw~ and being formed by the optiun~ of the ~oupling block in parall~lism or a round shape.
Fi~. 71-1 is its top view~
Fig. 71-2 i~ it~ 6ide cros6 ~tional view.
Fig. 72 show an exemplary embodiment of ~he fixed jaw having motion clamping claws ~nd the motion iaw with fla~ plate-shaped fixed clamping claws as formed by the options of the coupling block in parallelism or a round shape.
Fig. 72~ it~ top view.
Fig. 72-2 i6 it6 side cros6 ~ectional Yiew.
Fig. 73 ~3hows an e~smplary embodimen~ wherein the ~otion jaw ha~ ~t least two sets o~ the motion ~laws, and the fixed ~aw ia a rotatable m~chani~m, on which there i8 a flat plate~3haped clamping claw ~hat i~ form~d by th2 opti~n~ that the coupling blo~k iæ in etructural parallelism or a round ~hape. In this drawing, the bottom 93 .
of the f ixed jaw having the f lat plate-shaped cla~nping claws ha~ a protruding rvund column 1127 to couple with fix~d jaw hole 1128 in ~aid machine seat which i~ then joined by buckle ring 1129 ~r both t~f ~hem are in a 5 reverse structure, i.e. the fixed jaw has a hol~ and 'che machine has a column-shaped structure.
Fig. 73-1 is it& top v iew.
Fig. 73-2 is it6 ~ide cross ~ecti~nal view.
Fig. 74 ~hows an embodiment oiE the motion jaw 10 with a plate type clamping claw and a fixed ~aw which is rotatable, and which posse~es a m~vable clamping claw.
Fig. 74 1 is a top view of Fig. 74.
Fig. 74-2 is a side cross-sectional view of Fi~. 74.
Fig. 75 show6 the motion j~w having the ~ets of ~n~tion cla~ping claws, and the f ixed jaw having a E~ingle set of motion clamping claws 1130, the width of 6uch motion clamping claw 1130 being larger than tha~ of motion cla~ping claw 1101 ~usually twice that o~ the latter~.
~he manner of joining it with the jaw seat is the ~ame as that of the above-said ~otion cla~ping claw 1101. ThiR
ex~mplary embodiment i~ formed by the ~ption~ of ~he coupling blo~k in paralleli6m or in a round shap~.
Fig. 75-2 i6 i~ ~ide cros~ sec~ional view.
Fig, 76 show~ an exemplary embodiment wherein two parallel post-shaped ~tructure~ form the guide rail6.
. While the fixed j~w has ~wo motion clamping claws, the coupling between the mo~ion jaw and ~he two parallel post-shaped guide rails may ~e a swing type and ha6 a flat plate-shaped clampin~ claw 32~2. Thi8 kind of ~lat plate-shaped clamping claw is furth~r characteriz;ed in that its back has a le~t clamping claw and a right clamping claw of a different thickne~s, and a flat plate-~haped clamping claw is al~o provided in the inner 35 ~ide o the support ar~ of the ~upport guide screw, 80 that during the ~orward movement a three-~ace clamping i5 ~L~J~

94.
formed by the front side of the ahove-~aid flat plate-~haped clamping in conjunction with the ~otion clamping claw on the fixed jaw; while during the backward movement, its back and ~he flat plate-fihaped auxiliary clamping ~law 3203 on the inner 6ides of 6upport arm 1801 form the clamping function.
Fig. 76-1 is its top view. The feature of thi~
design means lie~ in that the fixed jaw ha~ two sets of the motion clamping claws. The motion jaw is the rotary adjustable ~lat plate-shaped clamping claw structure. The machine ~eat has a ~piral hole t~ accommodate the guide screw to penetrate through the support arm via ~aid hole to accommodate the guide ~crew to penetrate through the support arm via ~aid hole. The inner side o~ the support arm has at least a flat plate-shaped clamping face 3203, and the coupling part between the back of the ~lat pla~e-shaped clamping claw 3202 of the motion jaw and the inner side clamping face of the above 6aid support arm has a 810pe larger on its outer side and smaller on its inn~r side. Its slope is clo~e to the maximum rotary angle of the flat plate-shaped clamping claw, during the 6winging in the ~ackward movement The above-said two clamping faces provide another parallel clamping face. Fig. 76-2 is its side cross sectional view.
Fig. 77 sh~ws an exemplary embodiment in which two parallel po~t-shaped structures form the guide rail6.
~he fixed jaw 1101 has a flat plate-shaped clamping claw 3201, and the front of motion jaw has two arc-shaped socket æeats 1301, on which two sets of motion clamping 3~ ~laws are provided. The ~ingle-~ide locking motion clamping claw as shown in Fig. 2-31 is provided on the ~otion jaw. During the forward movements, two 6ets of motion clamping claws and ~lat plate-shaped clamping claw 3201 on the fixed jar llOl interact to clamp the irregular-shaped work pieces.

.~

3L2~

ss .
In addition to the embodiments illustrated in Figs. 77-77-3 there are clampin~ claw structures which further have the clamp vise ~tructure having a middle two-face slide jaw, ag 3hown in Fig. 77-4. This structure 5 iB designed to provide the characteristic~ having the conventional horizon~al clamp and the ~otion clamping claws. Rs mentioned in this inven~ion, its structural feature lies in that in various e~emplary embodiments in Figs. 77-77-3, a middle two-face slide jaw 3106 is provided between the motion jaw and the fixed jaw. The ~tructure of this two-face slide jaw is a~ ~ollows:
- the flat plate-~haped clamping claw is provided on the side facing the flat plate-shaped clamping claw:
__ an opposite motion clamping claw set i~
provided on the side facing the motion clamping claw; and -- the jaw body and guide rails form a slidable coupling structure.
When the user wants to carry out hori~ontal clamping functions during w~rking, the work piece is set between the horizontal clamp side of the two-face slide jaw seat ~nd another set of horizontal clamping claws~ When clamping irregular-shaped work pieces, the work piece is set between the side having the motion clamping claw and the ~aw having a motion clamping claw.
Fi~. 77-5 is it6 side cross sectional view.
~he above-said middle two face ~lide jaw is f~rther applied to the exemplary embodiment having the parallel guide rod as shown in Fig. 77-6.
: Fig. 77-7 is a ide cross ~ectional view o the exemplary embodiment having parallel ~uide rods. The above-said middle slide jaw can be further provided with more than one ~et of the clamping faces, ~ach being of a different geometric shape respectively, ~hus forming a number ~f slide jaw ~tructures of the middle of two-~ace ,r ' ?
.:

~s~

96.
slide jaw to select the cla~ping face according to the shapes of the wor~ pieces. The exemplary embodiment is shown in Fig. 77-8.
Fig. 77-9 is its side cross sectional view.
Besides, if ~etter clamping i8 required for a work piece with inclined faces, in addition to that the above-~aid swinging jaw is used to effect proper adjustments, further as shown in Fig. 78, two sets of separate motion jaws 1201 may achieve thi6 purpose. Its practical mean is such that the machine seat has one set of fixed jaws 1101, on which two ~ets of motion clamping claws or plate-shaped clamping claws are provided. Said machine seat al~o has a ~upport arm 1802 having two sets of guide rails 2001 and two set6 of spiral holes to set up two drive guide screws 1601 or other reciprocating drive devices guch as a fluid drive cylinder, etc. One of the separate drive motion jaw structures has a parallel-coupling slide block 2201 to couple the guide rail for reciprocating drive movements, and the front of the jaw has an arc-shaped socket ~eat 20 1301 to couple motion clamping claw 1001 with a coupling back having an arc face to clamp the work pieces by ~he guide screw in separate drive movements as ~hown in Fig, 7B-4.
Fig. 78-1 is its top view; Fig. 78-2 is its side 2~ cross sectional view; and ~ig. 78-3 is its front view.
Figs. 79-79-3 show exemplary embodiments of this 6tructure applied to a table-~ype Yi6e. qhe second of the qeparate drive motion jaw structures iæ ~ormed by the motion jaw aR shown in Fig. 2-38. In the exemplary 30 embodiment shown in Fig~ 80, the bottom of ~otion jaw 1201 has a round slide block 2101 to couple the guide rails for effecting the reciprocating drive movements and rotary ~ovements. The front of each of the jaws ha~ a ~lat plate-shap~d clamping claw 3201 respectively, and the drive of the separate guide screw and the ro~ary motions of ~he motion jaw are used to clamp the work pieces.

c~

97.
Fig. 80-1 is its top view; Fig. 80-2 is its side cross sectional view; and Fig. B0-3 iB it~ front view.
Fig. 81 illustrates an exemplary embodiment wherein a slot-shaped structure 1902 is provided on both sides of the clamp vise machine ~eat. Each of the motion ja~ and the fixed jaw has a single set of motion clamping claws 1130 respectively, on the side of which a stabili~ation blo~k 3204 for ~upport is provided and is used to form the third support face to clamp the irregular-shaped work pieces. On each of fixed jaw 1101 and motion jaw 1201, a 6et of motion clamping claws 1130 is provided respectively~ A stabilization blocX 3209 is provided on one side of machine seat 1901 and rabbets extended and slot-shaped struc~ure 1902 provided along one side or both sides of the machine seat, and then joined by screw 3205 on the side of the machine eat for locking or removal. In clamping the irregular-shaped blocX-type or round work pieces, or work pieces with a larger slope, the stabilization block performs the functions of the side fixed clamping claw.
~ig. 81-1 is its top view; Fig. 81-2 is the side view of its stabilization block; Fig. 81-3 is its front view; and Fig. 81-4 is its cross sectional view.
Fig. 82 illustratPs furthex structural design 2~ means of stabilization block 3204 as shown in Fig. 81.
Its ~eature lies in that said stabilizatio~ block has an elliptic ~lot hole 3206, and the outer side of &aid stabilization block 3204 has a slide support arm 3207 which is coupled with 6aid stabilization block 3204 by 30 dovetail 510t 3211 and can slide in it. Said slide support arm 3207 has an inner thread hole 3208, in which a guide screw 3209 is turned and set. One end of guide ficrew 3209 has a handle, and its other end has a thread to couple with the spiral on stabilization block 3204. Its end also has a sideway clamping claw 3210 with a conic tapered backward. When this ~tructure clampj 98.
irregular-shaped small work pieces, guide screw 3209 drives the conic sideway directional clamping claw to aid the clamping of the irregular-shaped small worX pieces, and the slide support arm ~liding on said ~tabilization block to select the proper positions.
Fig. B2-1 is its top view; Fig. 82-2 is its side cross sectional view: and Fig. 82-3 is its front view.
Fig. 83 shows the slot-type structure 1902 on the lateral face of the machin~ seat illustrated in Fig. 81 which is further provided with hole 1903 for positioning coupling. The bottom of stabilization block 3204 has at least a set of fixed rods 3212. During clamping of work pieces, po~itions of fixed rod 3212 and positioning rabbet hole 1903 are selected to provide the positions to adjust the eaid stabilization block so as to sliae support arm 3207 having the guide screw and sideway clamping claw shown in Fig. 29. Its bottom may also have the above-said fixing rods 3212 for position ~elections.
Fig. 83-1 is its top view; and Fig. 83-2 is its side cross sectional view.
Additionally, the above-said three-way clamping structure having a ~tabili~ation block may be further designed in ~uch a way that the machine seat has a guide .rail 3215 for sideway clamping claw 3214 to effect sideway sliding motion~ and a ~upport arm 3213 to couple its guide screw as shown in Fig. 84. In this drawing, 3215 is a sideway guide rail which intersects guide rail 2001 of the original motion jaw 1201 on the machine seat at an angle of 90. It~ outer end al~o has a support arm 3213 with a spiral hole, on which sideway clamping claw 3214 couples and slides and also effects reciprocating displacements by the drive of the guide screw coupled with the spiral hole in Ruppor~ arm 3213, thus enlarging its functions to engage with the work pieces.
Fig. 84-1 is its top view; Fig. 84-2 i its side view; and 99.
Fig. 84-3 is its front view.
The drive direction of the sideway clamping claw and that of the motion jaw in the above-said Btructure i8 at an angle of 90O Its further design may be ~uch as ~hown in Fig. 85, wherein the three-way drive motion jaw is in a three-way clamping type designed ~o that the contact shafts do not intersect to further enlarge its clamping scope to improve the defect ~hown in Fig. 85-3, wherein if the clamping direction6 of the three ~ets of clamping claws are such that the central ~hafts inter~ect, this makes two 3ides or more in a width of its clamping claws smallar than that of the work piece, so that it is impossible to clamp irregularly shaped work pieces. In Fig. 85, there is shown an exemplary embodiment of this three-way clamping structure with its central shafts not intersected. In this drawing, machine seat 1904 has a three-way drive guide rail on which there are three sets of motion jaws 1201 and support arm 1801 with a spiral hole in~ide. The back of the clamping claw 1130 of the coupling single set of the motion jaw has a round arc.
The three sets of motion jaws each having a separa~e drive guide rod respectively are 6uccessively set at an angular difference at 120 between two adjoining said drive guide rods, and the central shafts of variou6 said jaws do not intersect, but form a small triangle in the center to clamp work pieces of various types. The construction of the three-way jaw further has at least two sets of motion jaws 1201 reciprocatingly driving in the slide guide rail, and the other direction in fixed jaw 1101. Each of said three set~ of motion jaws ha~ a motion clamping jaw 1130 respectively. The front of each of the various jaws has an arc-shaped ~ocket seat 1301 respectively and is also ~et a semi-circular motion clamping claw 1130 respectivPly. The width of various clamping faces is at least twice the length of the ~ide of the said triangle formed by the intersection of the central sha ts of the ....

4~ 3 100 .
above-said jaws in the center. The formation of the above-said various clamping claws may also be con~tituted by two set of semi-circular motion clamping claws 1130 and one set of the motion jaws or fixed jaw, each having a flat plate-shaped clamping claw 3201 to clamp the irxegular-shaped work pieces.
Yig. 85-1 is its gide view. Fig. 85 2 illustrates an exemplary embodiment of its function. The above-said embodiments are exemplary embodiments of various designs for the said clamping structure of the clamping vise, its another integrally forming said clamping vise in ~he structure of a machine seat, since a good machine seat can provide a stable junction for semi-permanently fi~ed items ~uch as the clamping vise itself, and machinery work bench, worX table, etc., and further provide directional adjustments for the clamping vi~e. Various improvement means are described as follows:
Fig. 86 shows a machine seat wherein the long strip arc-shaped adju~tment face joins the machine seat to adjust the directions of the clamping vise. In this drawing, for the structure with a lower machine seat 3220 in an E-shaped long strip arc form, to its bottom is attached machine seat locking guide screw 3221 and clamping block 3222. The bottom of the clamping vi~e itself has a rectangular ~lot hole 3233 in a width slightly larger than that o~ the round arc on the top of said lower machine seat to accommodate the arc-shaped structure on the top of said lower machine seat to be inserted thereinO Through hole 3226 on its both sides accommodates joining screw 3227 to penetrate therein.
Fixing block 3224 i8 a plate-shaped long strip block and its two sides has ~crew hole 3225 to join fixing block 3224, and its middle part has a ~piral hole 3228 to accommodate an angle locking bolt to be turned therein, and its si~e is slightly wider and longer than that of the rectangular 810t in the ~ottom of the machine ~eat. Screw 101 .
3227 is locked on the bottom of the ~achine seat to join the lower machine ~eat and the bot~om of the clamping vi~e. A damping block 3230 has a bottom in a convex arc ~hape, and i~s middle part hag a sunk round 30cket hole 5 3031. A ~emi-circular gap is formed between the top round arc on the lower machine seat and the bottom seat of the cl~mping vise, after the top round arc on lower machine seat to be set in from its side joins the bottom seat of the clamping vise. After the angle locking bolt 3229 is turned and penetrateq through ~piral hole 3228 in the fixing block, said bolt tightly presses again t the socket hole 3031 on the bottom of damping block 3030 and is tightened or released to make the gap between the bottom seat of the cla~ping vise and the lower machine seat ~lackened for adjusting the angles or locXing ~tatus.
Fig. 86-1 is its side cross sectional view; Fig.
86-2 is its front view; and Fig. 86-3 is its bottom view.
Fig. 87 shows another exemplary embodiment of the invention. The structure shown in Fig. 87 is designed such as to further provide a dual-purpose machine seat for horizontal and vertical locking use6 to vertically clamp the edges of a work table or to be locked on the work bench of a drill, and also effect angular adjustm~nts.
Its construction is described as follows.
The end of the e-shaped clamping structure close to locking bolt 3221 of said lower machine seat bends 90 toward the direction of the operational handle of the locXing bolt of the lower machine seat, and also extends and i6 provided with a hole or semi-circular notch 3232 3~ for horizontal locking, while the other end of the e-~haped clamping structure bends 90 successiYely three timeS tvward the inner side of the e-shaped structure, and then bends back to closely lean against the inner side of the e-shaped ~tructure. A hole or semi-circular notch 3232 for the horizontal locking is provided in the section between the first and second 90 bends. ~he section ~Z6~

102.
between the second and third 90 bends aerves as a Vertical locking face, and its angular adjustment structure is the same as that shown in Fig. 86.
Fig 87-1 is its side cross sectional view; Fig.
87-2 is its front view; and Fig. 87-3 iR a bottom view.
Fig. 88 illustrates an exemplary embodiment of the structure having two locking faces and angular adjustable functions. When the clamping vise is used with a work table, sometimes it has to clamp work pieces set on the floor in a suspension ~ay, and the locking of the clamping vise uses its bottom to join a C-shaped clamping seat on the one hand and also needs to be joined to the back of its fixed jaw; and further the opposite angle between both of them is made adjustable to facilitate the clamping of various types of work pieces in different circumstances. In this drawing, 3240 i5 a C-shaped clamping seat, 3221 is the machine seat locking bolt which penetrates through a screw hole 3241 in one side of the clamping seat and then couples with a clamping block 3222, The middle section of the C-shaped seat has a multi-angular hole 3246 and screw hole 3241, while the opposite side has another multi-angular hole 3248~ The fixed jaw face of the clamping vise has a multi-angular hole 3245, and the bottom seat also has at least a multi-angular hole 3247. The way of the joining and angular set~ing structure between multi-angular holes 3248, 3246 in the C-shaped seat and multi-angular holes 3247, 3245 in the clamping vise is. the shapes and sizes of various said holes may be either the same, or ~hey ~ay be polygonal, in which some are twice the size of others, and the distances of their opposite sides are equal. Then a middle polygonal locking section of an outer diameter ~maller than that of the head but larger than the 6crew is provided between the head of locking screw 3242 and the acrew, and its length i5 _ the thickness of the multi-angular hole in the C-shaped seat + the thickness of ~2~

103.
the multi-angular hole in the cla~ping vi6e the thicknes~ of the thicker holes of them. The ~hape and ~ize of the polygonæ in the locking section are such as to couple the through-hole polygon~ with the multi an~ular hole in the C-shaped ~eat, and the ~ulti-angular holes in the bottom of the clamping vise concentrically overlap hy an equal angular extent ~hus at lea~t pos6ibly locking the two opposite ~ides (or angles) of the polygon with equal angles, and thereby maXing the bottom of the clamping vise and the C-shaped Geat non-rotatable. An absolute requirement is that the cro~ section of the locking ~crew must be at least in a 6hape different from that o one of - the two holes to be penetrated through by this locking ~crew. The aforesaid construction i~ used to 6elect various angles of the clamping vise to be fixed on the work table.
Figs.~8-5-88-lO illu6trate its exemplary embodiments.
Fig. 88-1 is its ~ide cro~s sectional view.
Fig. 88-2 is its front cross sectional view.
Fig. 88-3 is it~ back view.
Fig~ 88-4 shows the middle section having an equal-la~eral polygon-~haped locking screw 3242.
The way of joining the C-6haped clamping seat and the clamping vise shown in Fig. 88 may be effected by meang of a further structure wherein the two incline~
effect the function of universal adjustments. Its structure, BS illustrated in Fig. 89, includes a universal locking ~crew 3250 having a ball shaped head and two 30 inclined conic~shaped middle blocks 3251, 3251' and fixing nut 3252. A6 shown in Fig. 89, the head of ~aid universal locking ~crew 3250 is in a ball shape, its upper end has a polygonal screw head (or inner polygonal crew ~tructure), and its lower end is a ~mooth round rod, with thraads on 3~ the end. Inclined conic-~haped middle block6 3251, 3251' are in the form of a round ox polygonal block, 104.
respectively nonparallel between their top ana botto~, and have an inclined conic-shaped hole in their middle part respectively. Their top and bottom faces are provided with patterns indented by pressurization BO ae to enhance friction. In use, the two inclined conic-shaped middle blocks are overlapped on their faces with a smaller hole and then set between the C'-shaped clamping seat and the clamping vise seat to accommodate æcrew 3250 of the universal clamping seat to penetrate $hrough therein, and then to be locked by a nut. The over-lapping angles of the two sets of the inclined conic-shaped middle blocks serve to adjust the bending angles, and said two inclined conic-shaped middle blocks rotate simultaneously to adjust the direction of the bent angle, thus making ~-shaped clamping seat 3240 and the clamping vise effect universal adjustments.
Fig. 89-1 is the side cross sectional view of its combination; Fig. 89-2 is its back view; and Fig.
89-3.89-6 are its functional views.
2~ Fig. 90 shows an exemplary embodiment of the two-piece structure of the clamping seat having angle-adjustable inclined faces, wherein the polygonal hole illustrated in Fig. 88 may be used to set the an~lesO In this drawing, thP clamping sea~ is formed by 2S C-shaped clamping seat 3054 with inclined faces and middle seat 3055 with inclined faces. The E-shaped structure of C~shaped clamping inclined face seat 3054 is foldçd by a plate shape. Its enclosed end i6 a triangle as viewed from the side. Its bottom has a screw hole 3~41 to accommodate a clamping and fixing bolt of the machine seat to be turned therein. The outer ~ide of æaid clamping and fixing bolt of the machine seat has a rotary handle, and its inner side engages with a clamping block to be clamped and fixed on a semi-fixed article (for inRtance a work bench). Middle seat 3055 with inclined aces is of a triangular plate-shaped structure, the inclined ~ide of 105, which has a locking hole 3059. ~ocking scrzw 3060 and locking nut 3061 are locked in locking hole 3057 in the inclined face of the clamping geat having inclined sides to tightly lock the two inclined sides for the bent angle adjustments. Locking hole 3058 is also provided to engage with the locking hole in the clamping vise. Various locking holes may be made in a polygonal hole as ~hown in Fig. 88, and then matched with locking screw 3242 to set and firmly lock its angles.
Fig. 90-1 is its side cross sectional view. Fig.
90-2 is its top view.
Another form of universal adjustment structure of the clamping vise may be such as is shown in Fig. 91. In this embodiment, inclined face 3065 protruding at its top but concaving in its bottom is extended from the back of the fixed jaw of the machine seat, and the middle part of said inclined face is provided with a spiral hole 3066 One end of a cylinder 3067 has a ring-shaped ~lot 3068, and its other end has a spiral to be turned and fixed in spiral h~le 3066 in the extended inclined face on the bacX
of the fixed jaw. A middle seat 3069 is a three-dimensional body with a triangular cross section:
its inclined face 3070 has a round hole 3071 to engage with the end ~with a ring~shaped slot) of cylinder 3067.
The side opposite to the round hole ha~ a sidewise screw hole 3072 to accommodate the adjustm~nt locking screw handl~ 3073 ~o be turned therein for locking or releasing cylinder 3067 to the work elevation angles of the clamping vise integrally locked with cylinder 3067. The bottom side of the middle seat has another round hol.e 3034 and sidewise screw hole 3075 and adju~tment and locking screw handle 3076. The lower end of the C-shaped bottom 6eat has ~ screw hole 3241 to accommodate locking screw handle 3231 to be turned therein, and its turned-in end couples to clamping block 3222 to be then clamped on a semi-fixed article. Each of its top and side has a spiral hole 3077 106.
respectively, to accommodate a cylinder 30780 Like cylinder 3067, one end of cylindeI 3078 has a ring-shaped slot 3079, and its other end has a fipiral to be turned and fixed in spiral hole 3077 in the ~ide or top of the C-shaped clamping seat (depending on the work circumstance). Its other end couples round hole 3074 in the bottom of the above-said middle seat and is al80 ~ubjected to the operations of the adju~tment and locking ~crew handle 3076 for selecting the direction o~ the c1amping vise, Fig. 91-l is its top view; Fig. 91 2 is a back view; to further adapt to more complicated work requirements.
Fig. 92 illustrates an embodiment wherein an auxiliary middle seat 3080 is add~d between the fixed jaw and the middle ~eat and a cylinder 3081 with its end having a spiral, and its other end having a ring-shaped slot 3083 couples spiral hole 3082 in the back of the fixed jaw of the machine seat of the clamping vise. The joining structure bet~een the inclined faces on the auxiliary middle seat and facing the middle seat is shown in Fig. 91. In the direction facing the fixed jaw back, there is a round hole to couple cylinder 3086, at a place on its internal face, and opposite to ring-shaped slot 3083 in cylinder 3081 having a sidewise ~crew hol~ 3086 to accommodate locXing ~crew handle 3085. In addition, various above-said rotary coupling parts may be also replaced by and made into the polygonal hole shown in Fig.
88 to be matched with locking ~crew 3242 for carrying out the an~le setting and locking functions. Fig. 92-l is a top elevational view. Fig. 92-2 is a near elevational view.
Figs. 93-93-3 show exemplary embodiments in which the rotary coupling part~ shown in Fig. ~l are replaced by and made into a polygonal hole and locking screw 3242 to effect the angle setting and locking functions.

~65i~~

107.
Figs. 94~54-3 illustrate exemplary embodiments in which the rotary coupling parts shown in Fig. 92 are replaced by and made into a polygonal hole and locking screw 3242 to effect the angle setting and locking functions.
Besides, the machine seat of the conventional clamping vise is usually fixed on a table ~op, and its height is constantly unadjustable. It ~ometimes may have an improper height within several inches to user~ of differing body heights, with the result that this easily makes them tired over an extended time of work.
Fig, 95 shows a structural design of the bottom of a height adjustable and angle rotary adjustable clamping vise, including the machine body of the clamping vise. Its lower side has structure 3089 with a hollow cylinder or solid cylinder having outer threads to engage with bottom seat 3090. In this design bottom seat 3090 is a round ring-shaped structure, its circumference having a projected beam 3091 with a round hole 3092 to be locked on 2G the table top. Viewed from its top, bottom seat 3090 has a sunk inner ring-Rhaped hole 3093 to accommodate arc-shaped block 3094 having at least two ~ections with inner threads between said arc block~. A pin 3G95 fixedly set on the botto~ rim of the various said section-type inner rings limits the sliding. Various said arc blocks 3093 with inner threads are of equal or angular length for identifying their respective rotary sequence and for accommodating the hollow cylindrical outer ring threads on machine body 3089 to be turned therein. The arc 3ections Of ~aid arc blocks are inserted into r~spective sunk inner L ing holec 3093 in the bottom seat. At least a ~idewise screw hole 3096 is provided in its middle part to accommodate a screw handle 3097 to be turned therein from outside to push the plate-shaped arc blocks with inner threads for locking or rele~sing machine body 3089. Thus 108.
the above-said structure can achieve the very high optio~s and adjustments of the horizontal angles for the machine eeat.
Fig. 95-1 is a top view of the machine seat; and Fig. 95-2 is ~he side view of the machine seat.
Fig. 96 shows the two-piece structure as upper machine body 3098 and middle machine body 3099 further made from machine body 3089 æhown in Fig. 95. The lower ~ide of the upper machine body i8 in an inclined face 4000, its center having a hollow or solid cylindrical structure 4001 with outer threads perpendicular to the said inclined face. The joining of the lower ~ide of middle machine body 3099 and the structure of bottom seat 3090 is the same as thP above-said body 3099 and bottom ~eat 3090 as shown in Fig. 95. To effect height and horizontal angle adjustments and locking, the upper side of middle machine body 3099 has an inclined face 4002 complementary to the inclined face on the lower side of the upper machine body. Said inclined face 4002 has a vertically sunk ring-shaped hole 4002 to accommodate at least two-section arc-shaped block 3094 with thread~
inside to be turned therein, between various said blocks.
A pin fixedly set on the bottom rim of the ring limits their sliding. Various plate-section-typc arc blocks 3094 with inner threads are of equal or unequal lengths for identifying their respe~tive rotary ~equence and for accommodating the hollow cylindrical ou~er ~hxeads in machine body 3098 to be turned therein. The middle part of the arc secticn of the arc blocks to be ins~rted into the concave inner ring 3093 on the bot~om seat ha6 t leas~ a sidewise thread hole 3496 to accommodate a screw handle 3097 to be turned from outside to push the plate-section-type arc blocks with ~hreadæ inside for locking or releasing machine body 3089. Thus the above-said structure can achieve very high options and adjustments of the elevational angles for the upper machine body.

109 .
Fig. 96-1 iB it6 ~ide cross sectional view, and Fig. 96-2 is its bottom view.
Fig. 97 ~hows an exemplary embodiment of the structure of the ~olid cylindrical coupling inclined face with a ring-shaped slot for universal adjustments as ~hown in Figs. 91, 92 and now &et on the machine body of the clamping vi~e, mainly having upper machine body 3098, middle machine body 3099 and bottom seat 3090. In this drawing, the lower side or upper machine body 3098 ha~ an inclined face, from the center of which p~rpendicularly protrudes a hollow or solid cylindrical 6haft column 4004, the end of which has a ring-qhaped ~lot 4005. The upper part of said middle ~achine body has an inclined face 4006 complementary to the inclined face Gn the lower side of said uppex machine body. Said inclined face 4006 has a perpendicular sunk round hole 4007 which couples with projected shaft column 4004 on the lower side of the machine body. The side of round hole 4007 in the upper 6ide of the middle machine body has a ~idewi e thread hole 20 4008 to accommodate screw handle 4009 to be turned therein for lo~king or releasing. The lower side of the middle machine body has ctructure 3089 in a hollow or solid cylindrical column and having an outer spiral ~o couple bot~om seat 3090. In the drawing, bottom ~eat 3090 is a round ring-shaped ~tructure, its circumference having a projected beam having a hole 3092 to be locXed on the table. Viewed fro~ its top, hole 3093 with a ~unk inner r~ng i8 to accommodate arc block 3094 having at least two oection6 with inner thread~. Between ~aid arc blocks, a pin 3095 fixedly ~et on the bottom rim of the inner ring limits the sliding of vari~us blocks. Yarious said plate section-type arc blocXs 3094 with inner threads are of equal or unequal length for identifying ~heir respective rotary sequence and for accommodating the hollow cylindrical outer ring threads on machine body 3089 ~o be turned therein. The arc ~ections of said arc blocks are 110 .
inserted into respective sunk inner ring holes 3093 in the bottom seat. At lea~t a ~idewise ~crew hole is provided in its middle part to accommodate a screw handle 3097 to be turned therein from outside to push said plate-shaped arc blocks with inner threads for locking or releasing machine body 3089. Thus the above-said structure can achieve very high option~ and adjustments of the hori7ontal angles for the machine seat.
Fig. 97-1 is i~3 side cros 6ectional view; and Fig. 97~2 is i~s bottom view.
The bottom seat illustrated in Fig. 97 has besides a further structural design with a flexible center. Since during tooth tapping or hole boring, if the center is not quite right, in the light cases, all the teeth or holes thus made are deflected away from the original center, and in the serious cases, the knife tools are damaged, so this flexible cen~ral bottom seat structure is a design to improve such a defect, since it has the ability t~ permit errors within a fixed amount without hindering the processing work.
Fig. 9B illustrates another exemplary embodiment of the invention. Its main structure comprises the coupling seat and bottom Reat of the upper machine body.
Upper machine body 4010 constitute~ the body of the clamping vise, and its upper side has an arm support, guide screw, guide rail, motion jaw, and fixed jaw, and its lower side has a longitudinal dovetail 4011 for front and rear position adjustmen~ and al50 a dovetail fixing ~crew 4020 to lock dovetail fixing block 4009 in dovetail 30 slot 4018. Coupling seat 4012 is a disc-shaped structure, its upper part having a dovetail slot 4018 to coupl dovetail 4011 on the upper machine body for longitudinal front and rear position adjustments. A round hole 4015 with thread~ inside is provided in its middle part to acrommodate ball-shaped central bolt 4016 to be ~urned therein, Said ball-shaped central bolt 4016 penetrates lll .
through round hole 4027 in bot~om seat 4013 and at the place to couple said round hole 4027, i6 in an opposite semi-ball ~rc shape; its threads are to be turned into a spiral hole in ~he coupling ~eat for limiting the maxi~um distance ~f coupling ~eat 4012 and bottom ~eat 4013. A
ring-shaped adjustmen~ structure 4014 ha threads inside to match the outer thread~ of the bottom ~eat by turning and is installed between bo~tom seat 4013 and coupling ~eat 4012 to turn and tightly press upward against coupling seal 401~ and bottom seat 4013 for a rigid joining between said coupling seat 4012 and bottom seat 4013, or to turn downward to separate bottom seat 4013 and coupling seat 4012 for both of them in a flexible float joining. Ring shaped structure 4014 may have a round hole 4028 or spiral hole on its ~ide to accommodate an operational handle to be inserted therein. A positive acting ring-shaped spring 4017 is a strong concentric ring-shaped spring and i set concentrically with ring-shaped adjustment structure 4014, and its other end is locked on coupling seat 401~. ~he lower side of c~upling seat 4012 is to lock the other end of said po~itive acting ring-shaped spring and fixing plate 4025 and locking screw 4026 lock its top. The bottom seat is in a column shape with its top protruding and its bottom ~unk; the outer xim of its upper part has threads, its lower projected beam has a fixing hole 4021, and its middle part has a round hole 4027 to accommodate ball-6haped central bolt 4016.
Fig~ 98-1 is its side cross ~ectional view and Fig. 98-2 is its b~ttom view.
Besides, in the above said exemplary embodiment sprin~ 4017 can be xeplaced by a 3emi-ball-shaped seat 4070 from the center of which outwardly extends a slot 4071. The upper part of said seat 4070 couples the bottom of machine body 4072 on the clamping vise having a recessed ball-shaped structure as a replacement for 11~ .
ring-shaped adjustment structure 4014, and its bottom and bottom seat 4013 may be joined in a horizontal rotary adju table ~tructure. Bottom 3eat 4013 has a conve~
ring-ghap~d structure larger than ball-~haped ~eat 4070 to limit the position of semi-ball-6haped gtructure 4070, and between them a scale with angular graduations is provided. The end of ball-shaped central bolt 4016 couples the semi-ball- haped socket ~eat, while its other end penetrates through bottom seat end ~lot 4071 in the semi-ball-shaped eat and upper machine body 4072 of the clamping vise. The upper machine body ef$ects angular adjustments along slot 4071, and rotary movements of the ~emi-ball-shaped ~eat.
The above-said flexible bottom seat is shown in Fig. 99. It has an inver~e cup-shaped middle coupling structure 4030 joined integrally by ring-shaped adjustment structure 4014 and coupling seat 4012. Its upper ~ide has a dovetail slot, and a central spiral hole. Positive acting ring-shaped fixing ~eats are provided on the above-said coupling seat. The lower edge of 6aid inverse cup-~haped middle coupling &tructure 4030 has an inclined conic ring-shaped hole 4031 with a larger bottom and a s~aller top. ~he outer ring on the upper ~ide of the bottom seat is a conic column 4032 with a ~maller top and a larger bottom to couple with the conic h~le in the lower 6ide inner hole in said middle coupling structure 4030.
After pen~trating through central hole 4027 in the bottom seat, the projected ~ection of said central adjustmen~
bol~ 4033 ha~ a transverse through hole to accommodate positioning pin 40340 The turning movements of central . adjustment bolt tightly packs inclined conic ring-~haped hole 4031 and inclined conic column 4032 of the bottom seat to maXe them into a rigid junction, or release~ both of them to make them in flexible joining, thereby maXing the center swing freely in a floating status.

113.
Fig. 99-1 is the side cross sectional view of its locked ~tatus; Fig. 99-2 is the side cro~B sectional view oE its released ~tatus; and Fig. 99-3 i~ it~ bottom view.
Fig. 100 illu~txates an exemplary e~bodiment of the front and rear and left and right position~ adjustment structure further provided on the upper machine seat in the above-said structure shown in Fig. 98, as this ~tructure (conventionally ~alled an X-Y work bench) i~
very popular with no need for repetition~ and i~ only provided for references in exemplary embodimentæ.
Similarly the structure ~hown in Fig. 99 may be al~o in the above-said ~tructural combinations. Fig. 100 is a side cross sectional view of an exemplary embodiment of this clamping vise having the left and right and ~ront and rear adjustment functions and disposed with a flexible bottom seat.
Fig. 100-1 is its front cro~s sectional view.
Besides, in addition to the automation clamping the drive of the clamping vise i8 often effected by a guide screw, but in lar~er travels, this usually causes some trouble to users. Although there are many rapid drive means available on the market, they are all unsuitable for strong clamping. An improved design of one of the major important element of the clamping vise is described.
Fig~ 101 illustrates a drive method of the clampin~ vise wherein a revolviny ~orque difference forms a drive speed before contacting the work piece, which is 3~ greater than the self-shifted drive speed after contacting the work piece. The bottom of motion jaw 1201 in this drawing has a transYer~e notch 4044 to accommodate hollow ~ylindrical nut 4041 with inner thread6. The side of said hollow cylindrical nut ~lo~e to the ~upport ~r~ is to be inserted with a ring-shaped friction plate 404~ and a guide screw having two-way threads i~ turned and inserted 114.
therein. ~hen the thruRt needed by the jaw is ~aller than the ~rictional force between hollow cylindrical nut 4041 and ~he 810t face on the bottom of the motion jaw and the ring-shaped elastic friction plate, the ~peed of moves forward or backward according to the speed resulting from adding the positive and reverse thread pitches. When motion jaw 1201 contacts a work piece and thus needs an enlarged push force, h~llow cylindrical nut 4053 set on the support arm slides and revolves, and ~otion jaw 1201 advances according to the reverse thread pitches of the coupling of motion jaw 1201.
Fig. 101-6 is its side cross sectional view~
Fig. 101-7 is it~ front view.
The above-said guide ~crew 4040 wi~h positive and reverse threads poses no difficulties in its installation, i~ fixed jaw 1101 is a knock-down structure, and if fixed jaw 1101 and the machine seat is integral. To expedite its installation, coupling handle end 4048 of the guide screw of both parts has to be smaller than the integral ~tructuxe of the inner diameter of the inner threads on the support arm, and is installed in from the back fixed jaw.
Fig. 101-8 is its side view~
Fig. 101-9 is its front cross Bectional view7 Its construction may be that the close handle end 4048 of the guide screw couples the integral stru~ture such that the diameter of the positive threads on the support arm is larger and the outer diameter of the reverse threads to be coupled to the motion jaw is smaller than that of the inner threads on the support arm~
Fig. 101-10 is its side view; and Fig. 101-11 is its front cross sectional view.
The above-said two-way bolt may further have a two-stage structure. Its one ~tage has positive threads 3~ and its other stage has reverse threads at its joining part. One ~ide is in a projected rod 6tructure 4049, the C

115.
other ~ide ha6 a sunk round hole 4050, and each of its aaid ~ide6 has a sidewi~e hole 4051 re~pectively. ~fter aaid ~unk rod structure i~ turned in ~aid ~idewiRe hole on its ~ides accommodate plug pin 5052 for ~i~ed joining.
Fig~ 101-12 iæ the side view of one o~ the exemplary embodiments~
Fig. 101-13 is its front crosG aectional viçw .
Be6id2.~, when the motion clamping claw de~cribed in this invention clamps work piec~s of the same profile and size, the angles that its variou~ cla~ping claws move are constant, and the drive quantity of the motion jaw i8 al~o equal, 80 variou~ ~otion clamping claw~ and drive jaws may further have a movement ~a~uring device of the motion clamping claw and a mov~ment ~ea~uring device of the motion jaw to indicate the angular ~hanye quantities o~ variou~ clamping claws and the displacement quantities of various motion jaws. The clamping vise ~tructure of the pre~ent invention serv~ a~ a gauge to mea~ure a profile to replace the fi~edly fox~ed gauge to become an ela6tic profile gauge. The measurements of the di~placement entiti*~ include a dir~ct reading style or an angular displacement digital display type.
Fig~. 102, 102-1, 102-2, 102-3 ~how further exemplary embodiment~ of the invention. A graduated scale of the an~ular displacem~nt~ i8 provided between the ~emi-circular motion clamping claw and the arc-shaped jaw face. A size graduated scale i~ al~o provided between the ~otion jaw and the yuide rail, or the guide ~cr~w uses a preciaion ~teel bead guide screw, ~nd on its one end, an angular displacement graduated ~cale i8 provid~d; thi~
acale may be one having differential position graduations si~ilar to a venier caliper to provide re~ding~ of finer si~e~
Fig6. 103, 103-1, 103-2, 103-3 illus~rate exemplary embodiments o the ~uxiliàry jaw with elevation angle adjustmentg. The size scale with graduations i8 to , ., i ,............................ .

116.
measure the angular displacement~ of the elevation angle adjustment of the auxiliary jaw and the motion jaw angles.
Fi~s. 104, 104-1, 104-2, 104-3 illustrate e~emplary ambodiments of the left and right rotatable structure of the motion jaw~ A scale with engraved graduations to indicate the angular di6placements of the m~tion jaw and the control angle is al~o provided to read out their displacemPnt quantities.
Figs. 105, 105-1, 105-2, 105-3 show the inclined face adjustment motion clamping claws between their respective opposite rotary clamping claw~. Angular displacement quantity indication graduations are al80 engraved.
For the ~ake of greater agility and precision, a bearing i~ set between ~he m~tion clamping claw and jaw.
To provide a dust-proof effect, the top diameter of the motion clamping claw i6 larger to cov~r the jaw top and thus prevent dust from entering.
Figs. 106, 106-1, 106-2 and 106 3 ~how a digital di~play detection structure. An encoder 4060 i8 provided between the motion clamping claw and to detect its angular displacement to be fed to the up-down counter, and also to sffect digital displays or compare with the se~ values. A
linear displacement quanti~y detector 4061, i8 also provided between the motion jaw and the guide rail to tran~mit the angular decoding number~ to the up-down counter. Encoder 4060 may be also set between the other auxiliary jaw with elevation angle adjustments or the rotatable motion jaw, or the variou~ section-type clamping claw~ of the mo~ion clamping claw, for adjus~ments by means of their inclined face6.
For more precise measurement, the drive handle of the guide handle is provided with an often u~ed limit rotary ~orque structure such aæ a conventional micrometer rotary handle to ~tabili3e its mea~ured push forces.
Figs. 107, 108, 109, 110 ~herefore illustra~e exemplary embodiment Pxamplee of the clamping measurement6.

117.
Summing all the above up, the present invention is a plural improved design made on the clamping ~tructure and its peripheral devices of the clamping vise. ~he object is to seek for a perfect clamping device to cause no worries to the u~er during processing, and also to adapt to a plurality of irregular-shaped work pieces, a~
well as to avoid economic lo~ses ~uch afi excessive costs, time, management, storage, etc., due to the need for an excessive number of jigs.
10 `

Claims (23)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A vise in which at least one jaw is provided with two rotatable gripping claws, each claw having a front gripping surface for gripping a work piece and a load-transmitting surface lying on a surface of revolution, with at least the major portion of the front gripping surface being contained within this surface of revolution, said vise including means for limiting the rotational movement of the claws and wherein at least one of said claws is formed of sections hinged together.

2. A vise according to claim 1 provided with means for retaining the claw or claws in place in the vise jaw.

3. A vise according to claim 1 in which the jaw is arranged to tilt about an axis perpendicular to the axis of the surface of revolution of a claw.

4. A vise according to any of claims 1-3 in which at least one of the claws may be clamped in position so as to provide a datum surface whereby a work piece may be removed and replaced in the same position.

5. A vise according to any one of claims 1-3 having a pair of jaws, one of which is arranged to slide or rotate laterally.

6. A vise according to any one of claims 1-3 having three or more jaws.

7. A vise according to any one of claims 1-3 in which at least one of the claws is graduated or provided with a position transducer for providing a measure of the profile of a work piece.

8. A vise in which at least one jaw is provided with two rotatable gripping claws, each claw having a front gripping surface for gripping a work piece and a load-transmitting surface lying on a surface of revolution, with at least the major portion of the front gripping surface being contained within this surface of revolution, said vise including means for limiting the rotational movement of the claws and wherein said jaw is arranged to tilt about an axis perpendicular to the axis of the surface of revolution of one of said claws.

9. A vise according to claim 8 provided with means for retaining the claw or claws in place in the vise jaw.

10. A vise according to claim 8 in which at least one of the claws is formed of sections hinged together.

11. A vise according to any of claims 8-10 in which at least one of the claws may be clamped in position so as to provide a datum surface whereby a work piece may be removed and replaced in the same position.

12. A vise according to any one of claims 8-10 having a pair of jaws, one of which is arranged to slide or rotate laterally.

13. A vise according to any one of claims 8-10 having three or more jaws.

14. A vise according to any one of claims 8-10 in which at least one of the claws is graduated or provided with a position transducer for providing a measure of the profile of a work piece.

15. A clamping apparatus, comprising:
a pair of vise jaws supported on a common base, at least one of said vise jaws being movable and at least one of which being fixed, each of the vise jaws having a pair of concave recesses formed therein laterally of each other, a clamping member in each of the recesses and having a convex surface substantially complementary to the respective concave recesses the concave recesses and convex surfaces being formed about a vertical axis, wherein, in a cross-sectional plane substantially at right angles to the respective axes, each axis forms the center of a circle substantially defining the respective concave recesses and convex surfaces, means for supporting each clamping member for pivotable-movement about its respective vertical axis, and each of the clamping members having a plurality of substantially-flat chordal faces intersecting one another and disposed oppositely of the convex surface on the respective clamping member, the chordal faces on one pair of clamping members on a respective vise jaw confronting the chordal faces on the other pair of clamping members on the other respective vice jaw, thereby engaging and securely retaining a work piece between the respective vise jaws, threaded rod means for moving said vise jaws towards and away from one another, said threaded rod means having a first portion threaded in a first direction and a second portion threaded in a second direction, internally threaded nut means threaded in a first direction, said nut means receiving said first portion of said threaded rod means, either said movable jaw or said fixed jaw having internal threads threaded in a second direction for receiving said second portion of said threaded rod means and for advancing said threaded rod means through said jaw, resilient friction ring means in frictional contact with said internally threaded nut means, said friction ring means for permitting said first portion of said threaded rod means to rotate within and advance through said internally threaded nut means when said movable jaw advances toward said fixed jaw prior to contacting the work piece, and said friction ring means for permitting said first portion of said threaded rod means to cause said nut means to rotate with said threaded rod means when said movable jaw is in contact with the work piece.

16. A servo-clamping device comprising:

a generally rectangular base having a pair of end portions, a first upstanding flange formed integrally with the base at one end portion thereof, a second upstanding flange formed integrally with the base at the other end thereof and constituting a fixed vise jaw, the base having a slide-way formed therein substantially longitudinally thereof, a movable vise jaw slidably received within the slide-way, threaded rod means for moving said vise jaws towards and away from one another, said threaded rod means having a first portion threaded in a first direction and a second portion threaded in a second direction, said threaded rod carried by the movable vise jaw and extending through a cooperating threaded recess in the first upstanding flange at the one end portion of the base, the second upstanding flange at the other end of the base having a first pair of spaced-apart concavely-formed vertically-extending seats, the movable vise jaw having a second pair of spaced-apart concavely-formed vertically-extending seats substantially opposite to the respective seats in the first pair of seats in the fixed vise jaw, internally threaded nut means threaded in a first direction, said nut means receiving said first portion of said threaded rod means, either said movable jaw or said fixed jaw having internal threads threaded in a second direction for receiving said second portion of said threaded rod means and for advancing said threaded rod means through said jaw, resilient friction ring means in frictional contact with said internally threaded nut means, said friction ring means for permitting said first portion of said threaded rod means to rotate within and advance through said internally threaded nut means when said movable jaw advances toward said fixed jaw prior to contacting the work piece, and said friction ring means for permitting said first portion of said threaded rod means to cause said nut means to rotate with said threaded rod means when said movable jaw is in contact with the work piece, a substantially cylindrical upstanding clamping jaw received within each of the seats in each pair of seats, each clamping jaw having a convexly-formed surface complementary to its respective concavely-formed seat, means for pivotably mounting each clamping jaw on the base for independent pivotal movement, and each clamping jaw having at least one pair of vertically-truncated adjacent flat surfaces for clamping against a work piece inserted between the jaws, wherein the jaws pivot independently and are adapted to clamp an irregularly-shaped work piece.

17. A clamping apparatus for clamping a work piece, said clamping apparatus comprising:
a pair of vise jaws supported on a common base, at least one of said vise jaws being movable and at least one of which being fixed, threaded rod means for moving said vise jaws towards and away from one another, said threaded rod means having a first portion threaded in a first direction and a second portion threaded in a second direction, wherein one threaded portion of said threaded rod is in engagement with a stationary structure of said clamping apparatus and wherein the other threaded portion of said threaded rod is in engagement with a movable structure of said clamping apparatus, internally threaded nut means threaded in a first direction, said nut means receiving said first portion of said threaded rod means, either said movable jaw or said fixed jaw having internal threads threaded in a second direction for receiving said second portion of said threaded rod means and for advancing said threaded rod means through said jaw, resilient friction ring means in frictional contact with said internally threaded nut means, said friction ring means for permitting said first portion of said threaded rod means to rotate within and advance through said internally threaded nut means when said movable jaw advances toward said fixed jaw prior to contacting the work piece, and said friction ring means for permitting said first portion of said threaded rod means to cause said nut means to rotate with said threaded rod means when said movable jaw is in contact with the work piece.

18. The clamping apparatus described in claim 17 wherein said internally threaded nut means and said friction ring means are located in a notch on said movable vise jaw.

19. The clamping apparatus described in claim 17 wherein said internally threaded nut means and said friction ring means are located in an aperture on a stationary upstanding flange portion of said base.

20. In a clamping device, wherein a pair of clamping jaw groups are mounted on a base, wherein one of the clamping jaw groups is movable in a direction towards and away from the other clamping jaw group to clamp a workpiece therebetween, and wherein at least the other of the clamping jaw groups includes a pair of movable clamping jaws arranged laterally of one another, the improvement comprising each movable clamping jaw being multi-layered and including at least a pair of moveable clamping claws spaced vertically of one another, the base of the clamping device having an upwardly-extending base member, and means for mounting each movable clamping claw in the multi-layered movable clamping jaw in the other of the clamping jaw groups for pivotal movement on the base, said mounting means including a post extending upwardly from the base of the clamping device, each movable clamping claw having a central hole for receiving the post, each movable clamping claw including a rearward portion having a substantially semi-circular plan outline, the upwardly-extending base member having a pair of vertically-spaced substantially semi-circular channels formed therein for receiving the respective semi-circular rearward portions of the movable clamping claws, respectively, each of the movable clamping claws further having a forward multi-faceted portion including at least a pair of planar clamping faces arranged transversely of one another, and a non-movable supporting ring member interposed between the pair of movable clamping claws, the supporting ring member having a central hole formed therein for receiving the post, the supporting ring member further having a forward portion extending substantially inwardly of the multi-faceted planar faces of the respective movable clamping claws, and the supporting ring member still further having a rearward portion provided with a flat edge for bearing against the upwardly-extending base member between the channels formed therein

21. The improvement of claim 1, wherein the upwardly-extending base member comprises a slide seat member carried by the clamping device for limited movement thereon transversely of the direction of movement of the one clamping jaw group.

22. The improvement of claim 1, wherein each of the movable clamping claws has a vertical thickness which is substantially greater than the relatively-thin supporting ring member disposed therebetween.

23. A device according to claim 2 in which the jaws arranged to tilt about an axis perpendicular to the axis of the surface of revolution of a claw.