US980903A - Type-matrix-side-grooving machine. - Google Patents

Description

J. s. BA-NCROFTKQ M. OQIND AHL. TYPE MATRIX SIDE enoovme MACHINE.

PtentedJan. 10, 1911[ 15 sums-sum 1.

APPLICATION FILED APR-1B, 1909.

J. S. BANGROPTKL M. U. INDAHL. TYPE MATRIX sum enoovme MAGHINE.

APPLIQATIOE FILED APRJG, 1909. v I

' Patented Jan, 10,- 1911.

15 snnt'rs-snnn'T 2.

1m: NORRIS PETER; co., WASHINGTON, n. c

J. S. BANGROFT MI 0. INDAHL.

TYPE MATRIX SIDE GROOVING MACHINE.

-,awrmouxon FILED APR. 16, 1909.

Patented 'Jan. 10,. 1911.

15 SHEETS-SHEET s. 1, 5

' H I. W I if r v a: y g u v 779 72] If] I i 3 5 .1 l iv! a 7]] l i :H I f 19? 1 753 I @2 i= 961 70a 73,? I Ll 730 P {l l" l L 732 M1 will" mom THE NORRIS PETERS co...wAsHmarcu, B. c.

woeuhoes sa I I J. s. BANGROFT & M. c. I NDAHL, TYPE MATRIX SIDE GBOOVING MACHINE.

APPLICATION FILED A-PR. 16, 1909.

Patented Jam 10, 1911.

' 15 sums-gami- 4.

Eluozntozs J. s BANGR'OFT & 11.0. INDAHL.

TYPE MATRIX SIDE GROOVING MACHINE.

APPLICATION FILED APR. 16, 1909. 980,903. Patented Jan. 10,1911.

15 SHEETS-SHEET 5.

m aw

-J-' S-Baawrafi' M- c'lzzlalakl.

rm: NORRIS PETE 1. WASHINGTON, a. c,

J. s BANCROFT & M. c; INDAHL.

TYPE' MATRIX SIDE GB'OOVING MACHINE.

APPLICATION IIL'ED'APEJ 16, 1909.

Patented Jam 10,1911",

J g "H A mygi mmm mm wm Wibxwooaa J S BANGROPT & M G INDAHL TYPE MATRIX SIDE GROOVING MAGHINE. APPLICATION FILED APE.16,1909. 9 0,903, Patented 13.11.10, 1911.

15 SHEETS-SHEET 7.

J. s. BANGROFT & M. d. VINDAHL.

TYPE MATRIX SIDE GROOVING MACHINE.

APPLICATION I'ILED'AIR. 16, 1909.

Patented J an. 10, 1911.

16 SHEETS-SHEET 8.

wuentors Ba/w'of. [India/I26 J. s. BANGROFT 65M. 0. INDAHL.

TYPE MATRIX SIDE GROOVING MACHINE.

APPLICATION FILED APR. 16 1909. 980,903.

Patented Jan. 10, 1911.

15 SHEETS-SHEET 9.

.. WASHINGTON, n. c.

J. s. 'BANGROFTjki-"M. 0. I'N'DAHL'. TYPE MATRIX SIDE I GROOVING MAOHINP APPLIOATIONI'ILED APR. 16, 1909.

980,903. 7 Patented Jan. 10, 1911.

15 SHEETS-SHEET 10.

THE NORRIS PETERS co., WASHINGTON n. c.

' J. s. 131111011011" 1 M. 0111111111111 TYPE MATRIX SIDE GROOVING MACHINE. 11221110111011 FILED APB.16, 1909.

980,903. Patented Jan. 10, 1911.

15 SHEETS-SHEET 11.

r": Mamas PETERS cm, wlshmamzv, D. c.

J S. BANGRO FT & MiG. INDAHL.

, TYPE MATRIX SIDE GROOVING MACHINE.

Arrmonxo n FILED APB.16, 1909.

Patented Jan. 10, 1911.

15 SHEETS-SHEET 12.

I IIIHIIIHIUIHIJH IHHTII amnutoz 5- J aamw'o t.

M: C law/ML I utter-wags J. $.BANGROFT & M. c.- INDAHL. TYPE MATRIX SIDE GBOOVING MACHINE.

APPLICATION FILED APR.16', 1909.

Patented Jan.10,1911.

16 SHEETS-SHEET 13.

fiaweL-M ozs' :Z 6'- Bazz croft M. a. 176M THE NqRRls PETERS cc" IAsmNcroN, n, c.

J. S. BANGROFT & M. G. INDAHL.

TYPE MATRIX SIDE GROOVING MACHINE. APPLICATION FILED APRJS, 1909.

Patented J an 10, 1911.

1a SHEETS-SHEET 14.

I. s. BANGROFT &;-M.-c. INDAHL; TYPE MATRIX SIDE GROOVING MACHINE.

Patented Jan 10,1911;

15 sums-sum 1'5.

ATEN

orrio.

JOHN SELLERS BANCROFT AND MAURITZ C. INDAHL, OF PHILADELPHIA, PENNSYL- VANIA, ASSIGNORS TO LANSTON MONOTYPE MACHINE COMPANY, OF PHILADEL- PHIA, PENNSYLVANIA, A CORPORATION OF VIRGINIA.

TYPE-MATRIX-SIDE-GROOVIN Gr MACHINE.

T 0 all whom it may concern:

Be it known that we, JOHN SELLERS BAN- onor'r and MAURITZ C. INDAHL, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Typeh latrixSide-Grooving Machines; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

The invention relates generically to automatic milling or shaping machines and is embodied in a machine specially designed to automatically, expeditiously and accurately produce the suspension and alining grooves or slots in the sides of type mat-- rices such as are employed in what is known as the cellular die case (Patent No. 7 8 1,245 dated March 7, 1905).

The grooves on diametrically opposite sides of the matrix are symmetrical and in parallel planes, intersecting the other pair of grooves at right angles, the two sets or pairs differing in width and, if required, in depth also, and in the process of manufacture the side grooving is usually performed after the matrix and conical centering cavities have been formed in opposite ends of the block.

A very high degree of accuracy is demanded both in locating and dimensioning the grooves to the end that the matrices shall be interchangeable and the characters retained in justified position in the die case; and it is also required that distortion and mutilation of the matrix block should be guarded against, all of which objects are automatically and expeditiously attained by the improvements hereinafter fully described and the novel features pointed out in the appended claims.

In the accompanying drawings illustrating a preferred form of embodiment of said invention: Figure 1 is a perspective view of the complete machine, the lower ends of the supporting legs being broken away and omit-ted. Fig. 2 is a top plan view Fig. 3 a front elevation and Fig. at a right end elevation of the machine. Fig. 5 is a vertical section through the blank posi- Specifieation of Letters Patent.

Application filed April 16, 1909.

Patented Jan. 10, 1911. Serial No. 490,229.

tioning and holding devices and the centering devices. Fig. 6 is a top plan view partly in section of those parts of the machine operating immediately upon the matrices including the feeding and delivering devices, the translating devices, the centering, gaging and rotary clamping mechanism and milling cutters. Fig. 7 is a longitudinal section through the matrix centering and placing devices. Fig. 8 is a detail View showing a section of the matrix centering spindle and its bearing. Fig. 9 is a longitudinal section of the rotary matrix holder or chuck and gage. Fig. 10 is a similar view with the chuck open and gage advanced to discharge the matrix. Fig. 11 is a. perspective View of the chuck rotating and locking devices. Fig. 12 is a front elevation of the gaging locking means. Fig. 13 is a section through the chuck spindle in a plane intermediate the pawl and its carrying pinion and looking to the right or toward the pawl controller. Fig. 14: is a similar view taken to the right of the pawl and looking toward the pinion. Fig. 15 is a detail section through a portion of the pinion pawl and the pawl controller. Fig. 16 is a face or end View of the rotary matrix chuck or clamp. Fig. 17 is a transverse section through the chuck spindle in the plane of the pivot of its movable jaw. Fig. 18 is a similar view in the plane of the actuating pin. Fig. 19 is a vertical section in a plane to one side of and parallel with the translating jaws. Fig. 20 is a detail view of a portion of the actuating devices for the translating jaws. Fig. 21 is a transverse vertical section through the translating mechanism. Fig. 22 is a perspective view of the translating devices with the side plate removed and the vertically reciprocating guide in section. Fig. 23 is a perspective view of the clamping aws of the translating devices with blank and finished matrices in position. Fig. 24 is a longitudinal section through the bearing for the spindle of one of the milling cutters. Fig. 25 is a transverse section of the milling cutter spindle and its bearing showing the means for effecting the lateral adjustment. Figs. 26 to '31 inclusive are diagrammatic views illustrating the translating jaws, matrix and milling cutters in difierent positions. Fig.

3:2 is a perspective view of the finished matrix. Fig. 33 is a perspective view of the transfer devices at the exit of the supply and entrance to the receiving galley, the translating jaws and cover plates being omitted. Fig. 34 is a vertical section through the transfer devices of Fig. 33 in the plane of the transverse pusher together with the translating jaws in position to receive and discharge the matrices. Fig. is a section on the line Fig. 34;. Fig. 36 is a perspective view of the block forming the discharge gate of the supply galley. Fig. 37 is a sectional view corresponding with Fig. but with the pusher advanced to deposit the finished matrix in the receiving galley. Fig. 38 is a perspective view of the entrance to the receiving galley. Fig. 39 is a detail perspective of the transverse pusher. Fig. "10 is a similar view of the pusher at the entrance to the receiving galley. Fig. il is a side view of the cams and connections for the translating jaws. Fig. 42 is a side view of the cam and connections for the t"ansverse pusher. Fig. 43 is a side view of the cam and connections for the guide of the translating Fig. 4 1 is a side view of the cam and connections for the centering spindle. Fig. a5 is a side view of the cam and connections for the locking bolt of the matrix chuck. Fig. 4G is a side view of the cam and connections for the chuck actuating devices. Fig. at? is a side view of the cam and connections for the chuck rotating devices. Fig. 48 a side view of the cam and connections for reciprocating the milling cutters.

Like letters of reference in the several figures indicate the same parts.

I or purposes of description the machine illustrated may conveniently be divided into its integrant parts as follows: the milling or grooving devices; the blank or matrix po- ,=itioning and holding devices; the translating mechanism; the matrix supplying and receiving gallcys; the means for transferring the n'iatric one at a time, from the supply galley to the translating devices and from the latter to the receiving galley; and the actuating devices for producing and controlling the action of the several mechanisms.

The matrix blo :k prior to the side grooving is in the form of a parallelepiped in one end of which the matrix cavity has been formed and in the opposite end a central conical depression or seat for the reception of the centering pin of the type machine, and the machine about to be described is specially designed to form the grooves 1, 2, Fig. 32, whereof the narrower parallel grooves 1 on opposite sides run into and intersect the wider parallel grooves 2 on the remaining two sides.

The milling or grooving mechanism ineludes two rotary cutters 3, of which the first corresponds in width with grooves 1 and the second with grooves Each cutter is reinovably secured to one of two arbors 5, the latter supported in parallel relation in hearings on a carriage 6 movable verti'zally in guides upon the frame. Each of said arbors is eccentrically supported in a revo luble sleeve or hearing 7, the latter carrying a worm wheel 8 engaged by a worm 9 supported in hearings on carriage 6, whereby said sleeve may be turned to adjust the arbor and cutter laterally for varying the depth of the cut. The arbor 5 is held against longitudinal displacement within sleeve 7 by being confined between a collar and nut at opposite ends of said sleeve, and tl e latter is provided with adjusting devices, such as nuts 10, for varying its longitudinal position.

To the rear end of each arbor 5 is attached one end of a flexible and extensible coupling 11 the opposite end whereof is connected to one of a pair of shafts supported in hearings on the frame and each provided with a pulley 12 or equivalent driving mechanism. In the preferred form illustrated the pulleys 12 are driven in relatively opposite directions by the driving belt 13, the latter passing first beneath the lower pulley, thence up and around the upper pulley and down and around pulley 14. By this arrangement both cutters are caused to reciprocate in the same path from opposite ends thereof so as to alternately engage the matrix, the latter being accurately positioned by the holding devices, and, in the interval between successive applications of the cutters, turned about its axis through 90 to successively present adjacent sides in the path traversed by one or the other of said cutters, as will presently appear.

The matrix positioning and holding de vices include a clamp or chuck and an opposed centering device between which the matrix is supported in proper relation to the path of the cutter during the formation of successive grooves in its sides, and means for intermittingly rotating said clamp or chuck, to present successive faces or sides of the matrix to the action of the cutters as will now be explained.

Supported in a hearing or bearings on the frame and provided with suitable means for preventing longitudinal movement therein, is a hollow spindle or sleeve 16, the axis whereof is preferably in parallel with and to one side of those of the cutter carrying arbors 5. The end of sleeve 16 adjacent the cutters is equipped with a removable head or plate 17 carrying two radial and independently adjustable jaws 18, the inner or adjacent ends whereof are disposed at a right angle. Opposing aws 18 is a movable jaw 19 provided with an angular seat 20 and carried by a lever 21 pivotally supported and operating within sleeve 16, said lever being furnished with an inclined groove or way 22 in which rides a pin 23 carried by a rod 24 within said sleeve. This rod 24 ex tends beyond sleeve 16 and is engaged by a spring 25, the latter operating to retract said rod in a direction to advance jaw 19 toward the angular seat formed by jaws 18. Head 17 is also provided with a guide 26 for the reception of a longitudinally movable block 27 the latter attached to a slide 28 within sleeve 16 in position to be engaged by rod 24 when the latter is advanced to retract jaw 19 and thus open the chuck. Block 27 serves as a gage for determining the longitudinal position of the matrix relative to the jaws of the chuck when inserted in the latter, and as an ejector for the matrix when the jaws of the chuck are opened, to which ends the slide 28 to which said block is attached is free to move within sleeve 16 between rod 24 and guide 26, the rearward movement being limited by the contact of block 27 with its guide so that when the matrix is inserted between the jaws of the chuck, block 27 will be moved back until arrested by its guide, thereby determining the position of the matrix, and when rod 24 is advanced to open the chuck, it will engage slide 28 and advance block 27 to eject the matrix from between the jaws of the chuck.

Opposite the chuck and in axial alinement therewith are the centering and matrix seating devices. These include a spindle 30 supported in suitable hearings on the frame and provided with a conical point adapted to enter the cone hole in the base of the matrix. Surrounding the pointed end of spindle 30 is a pusher in the form of a disk or plate 31 carried upon rods 32 lying in grooves in the periphery of said spindle, the rear ends of said rods being attached to a collar mounted upon the reduced rear end or portion of spindle 30.

The end of spindle 30 extends through a casing 34 attached to the frame, and the collar 33 is located within said casing, the lat ter limiting the forward movement of the collar. To spindle 30 in rear of collar 33 is adjustably secured a collar working in casing 34 and between said collars (33, 35) is interposed a spring 36. An actuating lever 37 engages an adjustable collar 38 fast upon spindle 30, and a guard 39 fast on the frame surrounds the conical point of spindle 30 when the latter is retracted to permit the entrance of a matrix between the chuck and centering spindle, the function of said guard being to prevent engagement of the matrix with the point of the spindle and consequent mutilation of either matrix or spindle. Then spindle 30 is retracted for the admission of a matrix to the chuck, collar 33 is engaged by the shoulder at the junction of the main and reduced sections of said spindle to withdraw plate 31 and the point of the spindle within guard 39, as represented in Fig. 7. The matrix having been presented in position between spindle 30 and the chuck, lever 37 is actuated to advance said spindle, the point of the latter entering the cone hole in the matrix, and plate 31 at the same time engaging the end of the matrix to force the latter into the chuck. During this movement the matrix is supported by its ends between the parallel faces of plate 31 and gage block 27, the latter held to place by the friction of slide 28 and yielding to the pressure of the matrix until arrested by its guide, whereupon, by the continued movement of spindle 30, the conical point of the latter is seated in the cone hole. The matrix being thus properly positioned, the movable jaw of the chuck is advanced to close the chuck and clamp the matrix, the spindle being maintained in its forward or centering position while the cuts are being formed. Thus the preliminary seating or centering of the matrix is performed by the spring actuated plate 31 and gage 27 acting upon the relatively broad ends of the matrix before the conical spindle is seated to effect the final centering of the matrix and to afford support to the end of the latter remote from the clamping jaws of the chuck.

The mechanism whereby the chuck is intermittingly rotated and accurately positioned, to present successive sides of the matrix to the cutters, is applied to sleeve 16 and in the preferred form of embodiment illustrated includes a disk 40 provided with four equally spaced peripheral notches 41, a locking bolt 42, a pinion 43 carrying an engaging pawl 44, a disk provided with equally spaced peripheral notches 46, and means for actuating the pinion and controlling the engagement of its pawl with disk 45. Disks 40 and 45 are fast on sleeve 16 while pinion 43 is free to oscillate thereon and when advanced with its pawl 44 seated in one of the notches in disk 45 it carries the sleeve with it. Locking bolt 42, Fig. 12, is movable longitudinally between parallel bearings or ways on the frame its engaging end or point being provided with opposite converging faces adapted to enter corresponding notches in disk 40.

To prevent accidental displacement of the chuck when locked in any of its four positions of adjustment bolt 42 is constructed in two sections, the outer section having its rear portion reduced or cut away on one side to form an incline 47 and shoulder 48. The rear section of said bolt is provided with a tongue 49 one face whereof is inclined, as at 50, to correspond with the incline 47 and provided with an overlapping or hook portion 51 beyond shoulder 48. The bearing on the frame facing incline serves as the gage or datum line for determining the position of the chuck when said bolt engages and is seated in notch 41, the arrangement and angle of inclines 47 and 50 being such that when the rear section of the bolt is moved in a direction to withdraw the engaging section from the notch 41 its hook portion 51 will engage shoulder 48 after the inclines separate slightly to loosen the bolt in its bearings; and when the motion of the rear section is reversed to project the bolt, the inclines will be reengaged to advance the front section, the two moving easily in their bearings until the engaging end is seated in notch 41 when by a continued pressure upon the rear section the front or engaging section will be firmly clamped against one side bearing, to wit, that one facing incline 59 and constituting the gage for the final positioning of the chuck.

The means controlling the movement and engagement of pawl 44 include the following devices: The )awl arm 53 carries a pin 54 and is providec with a toothed segment 55 concentric with its pivot 56 and gearing with a similar segment 57 on an arm 58, the latter also pivoted to pinion 43 and provided with a pin 59, the arrangement being such that arms 53 and 58 will move in unison in the same direction so that pins 54 and 59 will stand equidistant from the axis of pinion 43 in all positions of adjustment. Guided to reciprocate in bearings on the frame is a slide or yoke 60 provided with a curved way 61 to receive pins 54, one or the other whereof is at all times within said way. Pinion 43 is engaged by a rack 62 movable in guides on the frame and operating at predetermined intervals to oscillate said pinion back and forth. hen the pinion reaches one extreme of its movement, say the end of its feeding stroke, locking bolt 42 advances and is seated in notch 41, and way 61 is elevated and through its engagement with pin 59 causes the retraction or withdrawal of pawl 44 indicated by the dotted lines in Fig. 13, and full lines in Fig. 14) whereupon the pinion is rotated to the opposite extreme, to retract pawl 44 and bring the latter opposite the next notch in disk 40. During this movement pin 59 of arm 58 passes from way 61, after pin 54 of arm 53 has entered therein, and said pin 54 is brought to such a position that upon the movement of way 61 toward the axis of pinion 43 pawl 44 will be seated in the notch 41 registering therewith where it will be positively held during the next succeeding advance of pinion 43 by the engagement of said way with pins 54 and 59, thus providing an intermitting feed in which the engaging pawl is positively moved and held in engagement with the driven member during its forward or operating excursion and then positively withdrawn and held in retracted position, free of the driven member, during the return of the pawl to initial position.

During the partial rotation of the chuck, effected by the mechanism described, the jaws remain closed but the pressure upon spindle 30 is slightly relaxed so as to permit free rotation of the matrix while still supporting the latter axially against displacement.

The completed matrix when delivered from the chuck is received by the translating devices, the latter having previously been charged with an ungrooved matrix which it presents in position to be entered into the chuck through the action of plate 31 or spindle 30, after which the completed matrix is carried to a position where the transferring means operate to deliver an ungrooved matrix from the supply galley to said translating devices, and to deliver the completed matrix to the receiving galley, as will now be explained.

The translating devices include a frame 63, pivotally attached at its rear end, as at (34, to a carriage 65, the latter reciprocating in hearings on the frame and provided with a housing 66 in which frame (33 is guided in its movement upon. pivot 64, the arrangement being such that frame 63 is permitted a two way movement in a single plane. An adjusting screw (37 limits the movement of frame (33 in one direction, and the movement 1 of carriage 65 is limited in one direction by engagement with a gaging abutment 68 and in the other by an adjusting screw 69, the one for positioning the matrix holding devices relative to the chuck and centering spindle and the other with relation to the matrix transfer devices or pusher.

Frame carries a fixed block 70' located intermediate two oppositely movable levers 71, 72, each of the latter provided with a lip 73 and cooperating with a projection 74* on block 70 to form two pairs or sets of clamping jaws. To the rear end of each lever 71, 72. is pivotally attached one end of an actuating rod or link 74, the latter provided with guitlin sections 75 arranged between bearings 76 on frame ('33, and to each of said bars is coupled a spring 77 tending to move its bar in a direction to advance the jaw end of its lever toward the complemental member of the clamp. The closing movement of the jaws under the action of their springs is limited by block 70 with the opposite ends whereof said jaws contact in the absence of a matrix.

The front end of frame 63 i. 6., that nearest the chuck is fitted to a bearing in a transversely movable slide 7 8 by means of which the jaw carrying frame 63 is caused to vibrate upon its pivot to bring said jaws alternately into register with the chuck, and upon the carriage 65 is mounted a lever 79 in position to engage either jaw actuating rod 74 when brought into register therewith by the displacement of frame 63. Frame 63 is movable transversely of the axis of sleeve 16, its jaws traversing a path intermediate the chuck and centering spindle. l/Vhen in normal position, as represented in Fig. 19, the clamping jaws are withdrawn from the chuck and elevated to bring the actuating rod 74 of the lower clamp in register with lever 79 to permit of the opening of said clamp for the reception of a blank matrix; and when carriage is moved to advance the clamps into the space between the chuck and centering spindle, and slide 78 is actuated to bring either clamp into register with said chuck, the actuating rod 74 pertaining to the clamp at the time opposite the chuck will be in register with lever 79 and in position to be operated thereby to open the clamp for the reception or delivery of a matrix.

To protect the clamps from the chips given off by the millin cutters the latter are separated from the former by a casing attached to or formed in part by the frame and provided with an opening 80 for the passage of the clamp frame 63, and in said opening is arranged a self closing door 81 which yields to the advance of said frame and permits the passing to and fro of the clamps.

Suitably supported upon the frame to the left of the clamp frame 63 is a removable supply galley 90 the open end whereof abuts against a block 91 and registers with an opening 92 therein through which the matrices pass, the end of the column being arrested by a wall 93, forming one side of a trans verse channel 94 terminating at one side of the opening through which the clamp frame reciprocates. A follower 95, traveling on a guide and connected to a weight 96 through cord 97, the latter passing around properly disposed pulleys, serves to advance the column of matrices as the front member in channel 94 is removed.

The receiving galley is suitably supported on the right of frame 63 with its open end in register with a gate or passage 98 containing retaining springs 99 and opening into a transverse channel or way 100 terminating at one end in the opening or passage for the clamp frame 63 and provided with a spring retaining pawl 101.

The floors of channels 94, 100, are on clifferent levels separated the distance between the two sets of jaws of the translating devices so that when frame 63 is shifted to position the jaws in the space between proximate ends of said channels, the upper jaws will register with channel 100 and the lower with channel 94 as indicated in Fig. 34, in which position lever 79 registers with the actuating rod 74 of the lower clamp as in Fig. 22, and operating thereon opens the clamps for the admission of a matrix. The

104 reciprocating in ways on the frame and is formed or provided with two engaging faces the lower (105) riding in channel 94 and the upper (106) at the end of a reduced extension adapted to pass between the jaws of the upper clamp and advance the matrix into channel 100, beyond retaining pawl 101. Pusher 103, Fig. 40, is carried by a slide 106 supported to reciprocate transversely of slide 104 in guides on the frame and operates across the rear end of channel 100 in line with the entrance to the receiving galley. Opposite the shorter lower sect-ion of pusher 102 is an abutment 107 serving to gage the posit-ion of the matrix when introduced into the lower clamp.

)Vith the exception of the means for rotating the milling cutters hereinbefore described, the several mechanisms receive their motions from a single cam shaft 108, coupled with pulley 14 through gears 108", shaft 109, and worm gearing 110, Figs. 1, 2 and 4, as follows: The milling cutter carriage 6 is connected by link 111 with a lever 112, the latter bearing a roller engaging grooved cam 113 (Figs. 3 and 48); the actuating rod 24 is advanced to open chuck jaw 19 by the engagement of a. lever 114 (Fig. 5) whose lower arm carries a roller in contact with cam 115, Fig. 46; the centering pin spindle actuating lever 37, Fig. 5, is acted upon in a direction to advance said spindle by a spring 117 and in opposition thereto by a cam 118, Fig. 44; the locking bolt 42 and I slide 60 of the translating devices are coupled together and connected bya link 119 to a lever 120, the latter moved in one direction by a spring 121, Fig. 5, and in the opposite direction by a cam 122, Fig. 45; rack 62 of the translating devices is oscillated by a link 124 connected to a lever 125 engaged by cam 126, Fig. 47; slide 78 for effecting the vertical movements of clamp frame 63 of the translating devices is connected by link 127 to lever 128 the latter controlled by cam 129, Fig. 43; carriage 65 of the translating devices is coupled with a cam 130, Fig. 41, through a lever 131, opposed springs 132 on link 133, rack 134, segment 135, shaft 136, segment 137 and rack 138, the latter on said carriage; lever 79 for opening the clamps of the translating devices is coupled with cam. 139, Fig. 41, through a shoe 140, Figs. 19, 20' and 21, riding on rod 141, carried by piv-

Images