US2546196A - Vise for sawing machines - Google Patents

Description

G. F. MORRISON ET AL VISE FOR SAWING MACHINES March 27, 1951 2 Sheets-Sheet 1 Filed Oct. 10, 1947 H!!!"llllllllllllllllllll M F M 57 ms a). MM

ATTORNEY M r 7, 1951 G. F. MORRISON ET AL 2,546,196

VISE FOR SAWING MACHINES 2 Sheets-Sheet 2 Filed Oct. 10, 1947 VIII/11141111111).

rill!llllllllllllllllfluwil Patented Mar. 27, 1951 VISE FOR SAWING MACHINES George F. 'Morrison and Herman C. Frentzel, Milwaukee, Wis., 'a'ssignors to The Morrison Company, Milwaukee, Wis., a corporation of Wisconsin Application October 10, 1947, Serial No. 779,188

'5 Claims. 1

This invention relates to improvements in type slug strippers and in machine vises for holding slugs and the like.

In the makingof corrections in metal mounted photo-engravings, electro-types :for shell stereotype casts and inthe original composition thereof, it is desirable to mountii'n open spaces ormortices in the metal base thinly cut lines or type characters. Theproblem is to cut from the type slug or character a line or type character of a predetermined thickness thin enough .to permit laying in the metal base. There are various types of slugs, such as Linotype, Intertype, Ludlow, or APL, as well as different single foundry or Monotype characters. Each line or character must be cut to a predetermined thickness varying from .065 inch to .152 inch. Such 'slug's also vary in shape, length and body depending upon the size of the type. The slug stripper must, therefore, include a work-holding vise and gauge which will readily position .and clamp in place for desired trimming a great variety of type slugs.

It is an object of this invention, therefore, to provide a slug stripper which will cut off lines or characters from various sizes. of slugs or single foundry characters to a proper 'uniform predetermined thickness for use in the original composition or correction in such composition.

Another object of the invention is to provide a slug stripper with an. adjustable gauge, for determining the desired thickness of the line or character to be stripped which cooperates with a Work-holding vise during the clamping .of the slug to automatically position such "line or character for stripping as .so determined.

A further object of thisinventi'on is to provide a Work-holding vise which has a single looking knob, the operation of which quicklybrings the vise jaws into clamping position and then applies locking pressuretothe'j'aws, and in which the movement 'ofithe jaws to clamping position controls the positioning of the work'to be clamped.

These objects are obtained by providing a motor-driven rotary saw, the cutting periphery of which projects upwardly through a work table, s'lidably mounting on the work table a workholding vise so guided 'as to move toward and away from the saw in a path parallel .to the line of cut of the saw, and utilizing an adjustable gauge for measuring the distance between a block on the gauge and the side of the saw. The work-holding vise has a movable jaw relatively swingable with respect to the relatively fixed jaw to and from the clamping position of said jaws. A spring-biased presser forces a slug or other material placed on the fixed jaw into engagement with the block as the movable jaw is swung toward clamping position. Thus the slug is placed in a predetermined position at the time of clamping it. A locking knob, associated with the jaws, is utilized to swing the movable jaw into clamping position and is rotated to apply work-clamping pressure to such jaws. To cut a line or character of required thickness from a slug, the block is set "against the outer edge of the saw and the gauge is operated to space the block the required thickness from the saw. With the movable jaw in open position and the presser retracted, the slug is laid on the fixed jaw. Then by moving the knob the movable jaw is swung into clamping position. During this motion the presser is released and it resiliently urges the slug into engagement with the block to position the face of the line or character the desired distance from the saw. While in this position the movable jaw is brought to clamping position and the knob is rotated to apply locking pressure. With the slug so alined and clamped in the vise, the vise is slid in its path toward the saw and the line or character out off with the desired thickness.

The novel features, which are considered characteristic of the invention, are set forthwith particularly in the appended claims. The invention itself, however, both as to its organization and its method of operation, together with additional objects and advantages thereof, will best be understood -from the following description of a specific embodiment when read in connection with the accompanying drawings, in which:

Fig. 1 is a fragmentary perspective View of a slug stripper and vise embodying the present invention;

Fig. 2 is a fragmentary View in front elevation, with parts broken away for the sake of clarity, of the slug stripper embodying the present invention and showing the vise in open position with a slug placed therein;

Fig. 3 .is a fragmentary view in side elevation of the slug stripper viewed in Fig. 2;

Fig. 4 is a fragmentary view in front elevation, with parts broken away for the sake of clarity, showing the vise in clamping position; and

Fig. 5 is a fragmentary sectional view taken on the line .55 of Fi 4.

Referring to the drawings by reference nu-.

merals, the slug stripper comprises a table l0 mounted on a pedestal II. A rotary metal saw I2 is mounted under the table with a portion of its cutting periphery projecting above the table in a vertical plane. The table has an opening I3 in its side to accommodate the saw I2 and a tray I4 is mounted therein. The tray I4 is positioned adjacent the saw I2 with its bottom sloping downwardly from the table top to conveniently receive the type line or character as cut oif and guide them to the edge of the table. The tray is mounted between two brackets I5 projecting from the side of the table ID by screws I6 which pass through its ends. Thus the tray may be tilted to aid in discharging its contents.

In order to guide the slugs to the saw I2 in a path which is parallel to the cutting plane of said saw, there is provided a carriage I! having a land I8 slidably mounted in a guide I3 formed in the top of table Ill. The carriage reciprocally slides on the top of the table and is thus guided so that its side adjacent the saw I2 moves past the cutting periphery with sufficient clearance to prevent contact. A stop is provided in the forward end of the guide to limit the forward movement of the carriage and stop it in slugreceiving position. Another stop (not shown) limits the rearward movement of the carriage after it passes by the cutting edge of the saw. A saw guard 2| is mounted in the carriage H in the cut ting plane of the saw and covers the saw whenever the carriage is in the slug-receiving position. The carriage I! is also provided with a gauge barrel 22 which mounts an adjusting screw 23 with its axis substantially perpendicular to the path of travel of the carriage. The inner end (left as viewed in Fig. 2) of the adjusting screw 23 projects beyond the barrel 22 and has mounted thereon a spacer collar 24, an adjusting screw knob 25, and an adjustable calibration 2B. The adjustable calibration 26 is provided with a hollow head set screw 21 which permits the calibration 26 to be rotated andset at any desired position. The outer end of the adjusting screw 23 projects beyond the cutting plane of the saw I2 and has a gauge arm 28 fastened to it by taper pin 29. A gauge block 30 made of type metal has a gauging face parallel to the cutting plane of the saw. It has a gib 3I fitting over a pair of gib studs 32 and nuts 33 to replaceably secure the block to the arm. By means of a handle 34, the arm 28 may be swung from the lowered position shown in Figs. 1, 2, and 3, clockwise (as viewed in Fig. 2) to an upright position (not shown) to bring the gauge block 30 out of alinement with the cutting swath of the saw I2. An abutment 35 on the arm 28 engages with the top of the saw guard 2| to limit its clockwise motion and hold the arm 28 is such raised position. This same abutment 35 engages a lug 358. to hold the arm in the horizontal position shown whenever its outer end slides off the table top in the reciprocal movement of the carriage I'I. By rotating the adjusting knob 25 the gauge block 33 may be moved as desired toward or away from the cutting plane of the saw I2. Thus the distance between the righthand side of the saw I2 (as viewed in Fig. 2) and the face of the block 30 can be gauged and set for the purpose of determining the thickness of the trim as will hereafter be more particularly described.

In order to hold slugs of various sizes and characteristics for the purpose of guiding them to the saw I2 and to cut off a trim of desired thickness, there is mounted on the carriage IT a vise indicated generally at 36. The lower jaw 37 of this vise consists of a margin of the top adjacent the side of carriage Il facing the saw I 2. The upper jaw member 38 is movable in an arcuate path relative to the lower jaw 31 being guided by a resilient support or trunnion 39. This trunnion may be a casting and has a base secured to the carriage IT by hollow head machine screws 4|] and an upper portion having a cylindrically shaped outer surface secured to the base only along one edge thereof. The end M of the upper portion is unattached to the base and is spaced from the top of the carriage IT. The thickness of the connecting portion between the base and upper portion is sufficient to resiliently keep those parts in a predetermined normal position. However, those parts may be sprung toward each other under clamping pressure. The base has a bearing 43 in which is rotatably mounted a pivot 44. Both the upper portion and the bearing 43 have respectively alined circumferentially extending slots 42 and 45 which accommodate a locking shaft 46 and permit its swing action. The shaft 46 is threadedly engaged to the central portion of pivot 44 and extends through slots 42 and 45 and a bearing in the jaw member 38 and projects therebeyond. A locking handle 4'! is secured to the projecting end of shaft 46 by a rivet 48 whereby the shaft 45 may be swung and rotated. The upper jaw 38 has a jaw face 49 which is adapted to engage a slug S (see Figs. 2, 4, and 5) resting on the lower jaw or anvil 31. By swinging the knob 4! about the axis of the pivot 44 the jaw 38 may be swung from the open position shown in Figs. 1 and 2 to the closed position shown in Fig. 4. This swinging movement also causes a rotation of pivot 44, which rotation is utilized as hereinafter described. There is a substantial area of contact between surfaces of the inner cylindrical face of upper jaw 38 and the outer cylindrical face of the upper portion of trunnion 39. This contact is utilized in the clamping action of the vise. When the jaw 38 is swung so that it rests upon the slug S, and the knob 47 is rotated, clamping pressure is asserted between the jaws. However, before any downward springing of the upper portion takes place a suflicient frictional engagement is established between the trunnion 39 and the jaw 38 to prevent a relative movement therebetween as further clamping pressure is asserted. The stiffness or resistance to spring built into the connecting area between the upper portion and the base insures the establishment of such frictional engagement. Thereafter additional pressure applied by further rotation of the knob 41 causes the upper member of the trunnion 33 and the jaw 38 to react downwardly as a unit. This arrangement of parts and the structural design of the trunnion permits the vise to be moved from open position to any closed position in which it engages with any slug positioned in the vise by a rapid throw of the single operating handle and thereafter clamped by the rotation of such single operating knob.

When the vise is utilized in connection with a slug stripper, it is preferable to provide a presser 5!] which acts to continually resiliently urge the slug S into engagement with the gauge block 30 Whenever the jaws are being closed or are closed, thereby automatically setting the slug for the desired thickness of trim. As is shown in Figs. 4 and 5, the presser 50 is slidably mounted on the surface of the carrier IT in the space between the end M and the base. It is guided in its sliding movement by a pin and hole arrangement indicated at 5|. A pair of springs 52 positioned in and guided by oppositely related sockets 53 formedin the base and in :thepresser continually urge the presser.forwardlytoward the saw I'Zaand block 30. .Iniorder tolimit andretract such forward movement topermit placing the slug S in the to be clamped position, a pair of return levers 54 are provided. The levers are pivoted at 55 to respective ends of the presser 31 and are connected to the ends of pivot 44 by eccentrically mounted pins 55. The pins 56 operat in the slots 51 formed in the ends of return levers 54 to provide a lost motion connection. As the knob 47 is swung to the left as viewed in Fig. 2, the pins 56 engage the left end of slots 51 and move the levers 54 to the left withdrawing the presser 50 inwardly against the tension in the springs 52. When the slug S is placed on the jaw 31 and the knob 41 moved to the right, as viewed in Fig. 4, the springs 52 will force the presser 50 and slug S into engagement with the face of the block 30. This engagement normally occurs before the jaw face 49 engages the surface of the slug S. Thereafter the slots 5'? will permit further swinging movement of the knob 41 and the jaw face 49 will abut the slug. In order to prevent the presser 50 from projecting too far beyond the end 4! and get in the path of the jaw face 49, it has an upstanding flange 58 which engages with the end 4| to limit its outward movement.

When it is desired to strip a slug in order to obtain a line or a character therefrom for insertion, for example, in the metal base to repair a composition, the following operations take place. Assume that a repair is to be made in an electrotype and the thickness required is .105". The knob 25 is adjusted until the face of the block 39 slightly overlaps the cutting plane of the saw l2. Rotation of the saw is then commenced by throwing a switch E and the carriage IT is slid rearwardly along the table while the saw trims off a very fine layer from the face of the block 30. This determines an absolute zero for the block. While maintaining the knob 25 in fixed position the set screw 21 is loosened and the adjusting calibration ring 26 is rotated until its zero is in alinement with the indicating arrow. The set screw 21 is then reset. Thereafter the adjusting screw knob 25 is rotated (the direction depends upon whether the gauge is right-hand or left-hand) until the indication of calibration .105 is opposite the arrow. This moves the face of the block 30 an exact .105" to the right (as viewed in Fig. 1). A look (not shown) sets the knob 25 in this position. With the knob 41 in the open position, a slug S isinserted on the anvil or jaw 31. The knob 4'! is then swung clockwise (as viewed in Figs. 2 and 4) until the jaw face 49 is in abutment with the surface of the slug S. During this swinging action the presser 59 urges the slug S so that that face of its lineo-r character is in fiat surface-to-surface engagement with the block. so. As soon as the jaw face 49 is in contact with the slug S, the knob 41 is rotated (preferably right-hand) and the slug S is then clamped tightly between the lower jaw surface 31 and the jaw face 49. When the slug S has thus been clamped, the gauge arm 23, by manipulation of the handle 34, is swung to upright position removing the block so from alinement with the cutting swath of the saw I2. Then, as the carriage I1 is moved rearwardly, the saw 62 will cut off the line or the character at a thickness of exactly .105". As the line or character is cut off, it falls into the tray !4 from which it may be readily removed, either directly or by tilting the 6. tray, without the operators 'handco'ming dangerously-close to the saw.

Although only one embodimentof the invention is shown and described herein, it will be understood that this application is intended to cover such changes or modifications as come within the spirit of theminvention or scope of the followingclaims.

We claim:

1. A vise having a pair of relatively movable jaws swingable in an arcuate path from jawabutting position to jaw-open position, a jawsupporting member having an arcuate surface guiding one of said jaws in an arcuate path relative to the other, said support being secured to the other jaw member and resiliently movable with respect thereto upon compressive force being asserted between said jaw members, a pivoted shaft acting between said jaw members and swingable with respect to one during said relative arcuate movement therebetween, and tension-applying means associated with said shaft and acting between said shaft and the other of said jaw members to resiliently compress said support and apply clamping pressure to said jaws.

2. A slug clamping vise comprising a fixed jaw having a work-receiving surface, an adjustable gauge block adjacent said surface to locate work positioned on said surface, a resiliently mounted presser engageable with slugs positioned on said surface to normally urge the slugs into engagement with said block, a relatively movable jaw swingable in an arcuate path toward and away from said surface, a resilient support for guiding said movable jaw in said arcuate path, and a locking shaft and knob for controlling the arcuate movement of said movable jaw and for applying clamping pressure to said jaws.

3. A vise comprising a relatively fixed jaw, a support carried by said fixed jaw and having an arcuate guiding surface resiliently supported for movement toward said fixed jaw, a relatively movable jaw having an arcuate surface in sliding engagement with said first surface whereby said movable jaw is supported for movement in an arcuate path toward and away from said fixed jaw, a shaft swingably connected with said fixed jaw and positively engaged with said movable jaw whereby swinging of said shaft causes the arcuate movement of said movable jaw, and means operatively associated with said shaft for applying pressure between said jaws to resiliently move said first surface toward said fixed jaw to clamp said jaws.

4. A vise as claimed in claim 3 in which the resilient support comprises a cast metal trunnion having a base secured to said relatively fixed jawand an upper portion of cylindrically shaped outer surface integrally secured to said base along one edge thereof and in which said shaft is pivotally connected to said base and passes through a slot in said upper portion to accommodate its movement when said relatively movable jaw swings in said arcuate path.

5. A vise as claimed in claim 3 in which there is a work presser resiliently slidable on said fixed jaw and means connecting said presser and said shaft to withdraw said presser as said shaft moves said movable jaw away from said fixed jaw.

GEORGE F. MORRISON. HERMAN C. FRENTZEL.

(References on following page) 7 REFERENCES CITED Number The following references are of record in the 2137113 file of this patent: 2302334 UNITED STATES PATENTS Number Name Date 5 Number 1,506,407 Cheshire Aug. 26, 1924 563,957 1,698,909 Currier Jan. 15, 1929 8 Name Date Hobart et a1. Nov. 15, 1938 Seybold May 28, 1940 FOREIGN PATENTS Country Date Great Britain Sept. 6, 194%

Images