US2097568A - Perforating machine - Google Patents

Description

6 Sheets-'Sheet l /M/g/v TUA-f5 FM 05 1 mab@ F. B. KEALL El' AL.

PERFORMING MACHINE Filed March 4, 1936 Nov. 2, 1937,

Nov. 2, 1937. F. B. KEALL ET AL PERFORMING MACHINE Filed March 4, 1956 6 Sheets-Sheety 2 @VEA/T095 NOW 2, 1937. F. B. KEALL ETAL f 2,097,568

PERFORAT ING MACHINE Filed March 4, 1,936 6 Sheets-ShamA 3 s I l- A l F. B. KEALL ET AL 2,097,568

PERFORMING MACHINE Nov. 2, 1937.

Filed March 4, 1936 6 Sheets-Sheet l4 Fig? lil. C)

W/V/ gym W- NOV. 2 1937 F. B. KEALL Er Al.

PERFORATING MACHINE Filed March 4, 1956 6 sheets-sheet '5 Nov. 2, 1937.

F'. B. KEALL Al. 2,097,568

' luERFoRATING MACHINE Filed March 4, 1956 6 Sheets-Sheet 6 /AW/VTU/Pb" W Kanz/b e? my UNiTso STATES PATENT OFFICE' PERFORATING Frank Bycroft Keall and Lawrence Mawbey, Leicester, England, assignors to United Shoe Machinery Corporation, Paterson, N. J., a cor-V poration of New Jersey Y Application March 4, 1936, Serial No. 66,989

In Great Britain March 23, 1935 12 Claims. (Cl. 164-88) This invention relates to perforating machines of the punch feed control mechanism taken and is herein illustrated as embodied in a maalong the line XI-XI of Fig. 9;

chine for operating upon uppers or other parts Fig. 12 is a view in side elevation illustrating of boots and shoes, of the type in which the the gages and their operating mechanism;v work is advanced by a tool or tools which pro- Fig. 13 is a plan view partly in section of a por- 5V duce ornamental perforations therein. tion of the gage operating mechanism; Y

It is an object of the present invention to pro- Fig. 14 is a view in side elevation of the mavide an improved perforating machine which will chire illustrating the anvil vwith the table reoperate at high speeds smoothly and accurately moved;

to perforate the work and which at the same Fig. 15 is an end View of the portionv of the ma- 10 time can readily be adjusted for various operatchine shown in Fig. 14; Y ing conditions. To this end, and as illustrated, Fig. 16 is a detail view partly in section of the the invention provides a perforating'machine strip feeding mechanism taken along line having a relatively movable anvil and punch XVI-XVI of Fig. 9; and

together with mechanism for removing the waste Fig. 17 is a view partly in section of the suc- 15 material resulting from operations of the punch. tion punch operating mechanism. Y To this end, and as shown, the punch is pro-vided As shown in Fig. 1 of the drawings, the ma.-

with a recess adapted to receive the waste rnachine comprises a frame lIll which supports a terial, there being a suction device connected with work table l2 and has an arm I4 overlying the 20 the recess for removing the material to a contable. Mounted upon the arm isa punch I6 car- 20 venient receptacle. Y ried by punch bar IB which is arranged for move- The invention further contemplates the proviment heightwise of the frame to perform punchsion of mechanism for controlling the extent of Ving operations upon Work located upon the table transverse movement of theV punch in advancing and movable longitudinally of the frame for adwork across the face of the anvil, as well as auxvancing the work step-by-step across the table 25 iliary driving mechanism for the backing strip between punching operations. when the punch oscillating mechanism is ren- The upper portion of the frame ID has bear.- dered inoperative. ings for' a horizontal drive shaft V20 which ex- These and other features of the invention are tends from left to right of the machine, as shown disclosed in the accompanying drawings and in in Fig. 1. The drive shaft 20 has secured on its 30V the following detailed speeication and will be right-hand end a drive pulley 22 by which it may pointed out in the claims. be rotated andvhas associated with it a'start- In the drawings, ing and stopping mechanism, not illustrated in Fig. 1 is a front elevation of a perforating madetail, by which the shaft 2li may be 'caused to chine illustrating one embodiment of our invencomplete either a single or a plurality of revo- 3.5

tion; lutions. The drive. shaft 2l) may be conveniently Fig. 2 is a side elevation of the machine; driven through a variable speed driving device Fig. 3 represents a vertical section of the maat speeds varying between about 400 and 800 revchine taken along the line III-III of Fig. 1; olutions per minute according tothe nature of 40 Fig. 4 is a perspective view of portions of the the work being operated upon. The maximumV 40 punch bar driving mechanism; and minimum speeds may, of course, be other Fig. 5 is a sectional view of a portion of the than above stated to suit the operator or 'the punch bar driving mechanism taken along the work to be operated upon. line V-V of Fig. 2; Upon one side of the arm I4 of the frame there Fig. 6 is a side view partly in section of the is secured a bracket 24, Fig. V2, which Vsupports 4.5

punch and its associated driving mechanism; variousparts of the machine. The driving shaft Fig. 7 is a plan view partly in section of a por- 2 extends through the bracket 24 and carries on tion of the punch bar and punch bar frame; its forward end. two cams 26 and 28, Figs. 1 and 4,

Fig. 8 is a perspective view of part of the mecharranged side by side, whichV are engaged, reanism for rotating the punch; spectively, by two rolls 3l! and. 32 carried by a 50 Fig. 9 is a side elevation of a portion of the punch Ylever 3.4. The cam 28 acts through thepunch feeding mechanism; roll 32 to actuate the punch lever 34 to depress Fig. 10 is a transverse section through a porthe punch i6 to punch the work while the other tion of the punch and punch bar frame; cam 25 acts to determine the amount of lift of Fig. 11 is a view partly in section of a portion the punch during the feeding of the work by the 5 5 punch. The roll 38 is rotatably mounted on an eccentric portion 38 of a horizontal stud 38 extending from left to right of the machine and rotatably mounted in the punch lever 34, which stud also has rotatably mounted concentrically on it the cam roll 32. The roll 38 controls the lift of the punch I8 for the work' feed and by rotating the stud 38 in the lever 34 the amount of lift of the punch may be varied without affecting the heightwise position of the punch at the end of its punching stroke. The stud 38 is rotated by means of a screw 40 threaded through an upwardly projecting part 42 of the punch lever 34 and engaging an upwardly projecting arm 44 on the stud 38, the arm being held against the screw 40 by a spring-pressed plunger 48 in the punch lever 34 which engages a downwardly extending arm 48 on the stud 38.

The punch lever 34 extends from the cam rolls 38, 32 substantially horizontally forwardly and is pivoted about midway of its length on an eccentric portion 58 projecting from an end of a horizontal `shaft 52, Figs. 2 and 5, rotatably mounted in the overhanging arm I4 of the machine frame. The shaft 52 has extending upwardly from it an arm 54 by which it may be rotated andthe arm 54 has extending laterallyr from it to the right a lug 5S through which is threaded a substantially vertical screw 58 which has a conical point arranged to engage a V- shaped groove 88 in a plate 82 secured to the arm I4. The bottom of the V-shaped groove is concentric with the axis of the shaft 52 and the engagement of the screw 58 with the groove locks the shaft 52 in adjusted position. By rotating theshaft 52 the heightwise position of the punch I6 at the end of its punching stroke may be adjusted without affecting the amount of lift of the punch during work feeding movement of the punch.

As will hereinafter appear the work feeding movement of the punch I6 may be stopped when it is desired toperform, so called, spot punching in which a workpiece is presented to the machine and the machine is caused to perform a single punching operation upon the work at a selected place. When spot punching is being performed it is desirable that, when the machine stops with the punch raised, the punch shall be comparatively close to the work so that the operator can withY accuracy locate the work relatively to the punch. Means is therefore provided whereby the lift of the punch when the machine stops is limited and is less than it normally is when the work is being fed by the punch. This means comprises a screw S4 adjustably mounted in a bracket 88 secured to the forward end of the bracket 24 and arranged to engage a lug 68 projecting from the forward end of the punch lever 34 and to limit its upward movement. When the machine is used in the normal manner and they work is being fed step-by-step by the punch the screw 64 is preferably withdrawn from the path of the lug 68 and the punch depressing cam 28 then controls the lift of the punch during the return of the punch after feeding. Thus the mechanism above described provides means whereby the heightwise position of the punch at the end of its punching stroke when it is raised during its feeding movement, and when it is raised above the work after punching and feedin g or after punching without feeding, may be adjusted independently.

The `punch lever 34 at its forward end has rotatably mounted on it a horizontal stud 89, ex-

tending transversely of the machine, upon which is mounted a roller 'I8 which is engaged by a horizontal face I2 on the upper end of the punch bar I8. The punch bar I8 is vertically slidable in a punch bar frame 74, Figs. l, 2, 6 and 7, and is urged upwardly into engagement with the roller 'i0 by a compression spring 'I6 engaging at its upper end the upper wall of a recess 'I'I in the punch bar I8 and at its lower end a bracket 'Z8 projecting into the opening and secured on the punch bar frame 'I4 by screws 15.

The punch bar frame I4 is supported on the lower ends of a pair of parallel arms 88 and 82, Figs. 2 and 5, arranged behind the punch and pivoted on the bracket 24 on the overhanging arm I4 of the machine frame so that as the arms 88 and 82 swing, the punch bar frame 'I4 is moved substantially horizontally forwardly and rearwardly of the machine. The arms 88, 82 are forked at their lower ends and a rearwardly extending portion 84 of the punch bar frame I4 extends between the forks and is pivoted thereto by horizontal pins 86 and 88 extending transversely of the machine. The forward arm 88 is formed on the left-hand end of a horizontal feed shaft 88 which is rotatably mounted in the xed bracket 24 and in the machine frame and this shaft is operated by mechanism hereinafter described to move the punch bar frame I4 forwardly and rearwardly. The rear arm 82 is secured on the left-hand end of a horizontal shaft 92 parallel to the shaft 98 and rotatably mounted in the said xed bracket 24. The rear arm 82 has extending upwardly and rearwardly from its hub an arm 94 which as will hereinafter appear is connected to operate a paper feed mechanism of the machine.

The punch bar I8, Figs. 6 and 7, is slidable vertically in a dovetailed guideway in the punch frame 74 and has a lug 85 projecting forwardly from it in which is rotatably mounted a vertical sleeve 98. The sleeve 98 has formed on its lower end a flange |88 to which is secured a punch carrying block |82. The flange |88 engages the lower end of the lug 96 and the sleeve 98 has secured on its upper end a collar |84 which engages the upper face of the lug 98 so that the sleeve 98 is prevented from endwise movement in the lug but can rotate therein. The punch block |82 is secured to the flange |88 by a screw passing through the sleeve 98 and clamping the collar |84 to the sleeve 98. The collar |84 has projecting rearwardly from it lugs |88, Fig.

8, having between them a vertical recess |09 the upper edges of the walls of which are beveled as shown at H8. When the punch bar I8 is raised the recess between the lugs I 88 receives the lower` portion of the bracket 18.

When the punch bar I8 is lowered during the punching of the work the recess between the lugs 88 leaves the bracket 78 and the punch can be turned about the axis of the sleeve S8 if the work is s'v/ung during the work feed. When the punch is finally lifted from the work the engagement of the beveled walls of the recess |09 with the bracket 18, if the punch has been turned, rotates the punch to its normal position. To prevent rotation of the punch as it descends the collar |84 also Yhas a lug ||2 projecting from it, the lug having a vertical recess H4 which4 when the punch is fully raised is engaged by a vertical spring-pressed plunger I I8, Figs. 1 and 7, projecting downwardly from a lug IIS on the punch bar frame 14. When the punch bar I8 is depressed to punch the work the recess 'H4 in the lug |I2 leaves the plunger ||6 and the lug |09 is then just below thelower end of the plunger H6. At the end of the feed, during which the lug H2 remains below the plunger ||6, if the punch has been turned and moved the recess ||4 out of line with the plunger ||6 the lug ||2 will engage the spring plunger |I6 as the punch bar |8 rises and will lift the spring plunger until one of the beveled walls ||0 on one of the lugs |08 engages the bracketJ 18 on the punch bar frame and rotates the punch to normal position after which the spring plunger ||6 snaps down into the recess ||4 in the lug I l2. n

The block |02 has secured to its lower face a punch consisting of two small plates |20 and |22, Fig. 6, secured together, the lower plate |20 carrying small tubular punches |24 which abut against the underside of the upper plate |22. The plates |20 and |22 are secured together by screws |25 arranged behind the punches. The punches themselves are arranged as close as possible to the front edges of the plates so that the operator has as clear a view as possible of the portion of the work being punched. The side edges of the plates Y|26 and |22 are beveled and are securedV in a dovetailed guideway |26, Fig. l, formed partly in the punch block |02 and partly in a clamp plate |28 secured vto the punch block by a screw |30 thereby to secure the plates in position. The punch block |02 has formed in it a passage |32, Fig. 6, communicating with the tops of the punches to allow removal of the pills cut fromthe work by the punches. The passage |32 extends rearwardly to an arcuate face |34 (Fig. l0), formed on the punch block |02 which face is concentric to the axis of the vertical sleeve 98 about which the punch turns. The arcuate face |34 is in engagement with an arcuate face |36 formed on a downwardly extending portion of the punch bar frame 14 which portion has formed in it a passage |38 connected by a tube |40 and a flexible pipe |42 (Fig. 2), to an extracting mechanism hereinafter described. The mechanism for actuating the punch bar frame 14 to cause the punch to feed the work includes an arm |43, Figs. 3 and 9, secured on the rear end of the feed shaft 90 which, as above set forth, has on its forward end the depending arm which is pivotally connected to the punch bar frame 14. The arm |43 has pivotally connected tc it by a horizontal pin |44 one end of a link |46. The other end of the link |46 is pivotally connected at |48 to the rear end of a link |50 (Fig. 3) and to the lower end of a link |52. The forward end of the link |50 is pivotally connected at |54 to a cam lever |56 pivoted on a horizontal shaft |58 secured in the machine frame.V The cam lever |56 has on it a cam roll I 59 which enters a cam groove |60 in a cam |62 secured on the driving shaft 20. The upper end of the link |52 is pivotally connected to a feed adjusting lever |64 which at its rear end isrrotatably mounted on a horizontal shaft |66 secured in the machine frame. When the cam lever |56is actuated by its cam |62 the link |52 swings about its pivotal connection to the feed adjusting lever |64 and the path of movement of the pivot |48 of the three links |46, |50 and |52 is thereby controlled and its position and direction may be changed by adjustment of the adjusting lever |64. Ihis changing of the position and direction of the path of movement of the pivot |48 of the three links varies the amount of oscillating movement given by the cam lever |55 through the links |50, |46 to the arm |43 onV the feed shaft 90 and therefore to the punch bar frame 14. When the punch bar frame 14 is at the forward end of its feeding movement the pivotal connection |44 of the link |46 and arm |43 on the feed shaft 90 is in axial alinement with the pivotal connection |54 of the link |50 and cam lever |56, as shown in Figs. 3 and 9, and the feed adjusting lever |64 may be adjusted without moving thepunch barframe 14. The punch therefore always commences to feed the work from the same position. When the feed adjusting lever |64 is moved to the lower end of its range of adjustment a maximum feed of aboutV three-quartersof an inch is imparted to the punch and when the feed adjusting lever |64 is moved to the upper end of its range of adjustment the pivotal connection |48 of Vtherthree links |46, |50, |52 is brought into axial alinement with the pivot |58 of the cam lever |55 and movement of the cam lever does not move'the punch bar frame. t When Vthe work feed is. cutout inV this manner, spot punching maybe conveniently'performed as it is not necessary orY desirable that the work shall be fed. Y

The maximum feed when the adjusting lever |64 is moved to the lower end of its range of movement may if desired be reduced tc about half an inch and for this purpose the pivotal' connection between the arm 80 and the punch bar frame 14 may readily be moved nearer the pivot of the arm by withdrawing the pin 88 connecting' the arm 80, and p-unch bar frame 14 and placing it in a hole |68 (Fig. 2) provided in the arm and punch bar frame nearer the Vpivot of the arm. This variation in the maximum feed gives greater accuracy in the feed of the work and tends to lighten the strain on the mechanism as comparedV with obtaining Va half inch feed by adjustment of the feed adjusting lever as, of course, could be obtained when the maximum feed is about three-l quarters of an inch, an amount which is seldom required.

The forward end of the feed adjusting lever |64 has secured on it an arcuate plate |16Y the front face ofwhich moves behind a xed pointer |12, Figs. l, 2, 5, and 14, as the lever is adjusted upwardly or downwardly and has on it graduations which indicate the amountiof feed obtained according to the position of the lever. The graduations are at opposite edges of the plate |10 and the graduations along the left-hand edge (Fig. l) in-v dicate the amount of feed with the pin 88 in the outer hole in the arm 80 and punch bar frame and the graduations along the right-hand edge indicate the amount of feed when the said pin is in the inner hole |68 in the arm and frame.V The feed adjusting lever |04 is clamped in adjusted position to an arcuate plate |14, secured to a'bracket |16 secured on the overhanging arm |4 by a bolt Y |18 (Fig. 11) and hand nut |80 on the lever which clamp the lever against the plate |14.

The illustrative machine is provided with three presser feet |82, |84 and |86 (Figs. land .12)- to hold down the work during the punching fof the work. The presser feet are arranged to engage the work at the right 'and left cf the punch and behind thepunch. The presser foot |84'is carried by the presser foot |82 and the presser lfeet are all independently adjustable horizontally toward or from the punch. The presser feet |82,

|86 are carried by a presser foot bar |88 which is slidable vertically in the bracket 66 secured to the bracket 24 xed on the end of the overhanging arm I4 of the machine frame. The bar |88 isV urged downwardly by a spring |90 in the upper end of the barthe upper end of which spring engages a plate |92 secured on the presser bracket 66. A key |94 projecting laterally from the bar |88 enters a vertical slot |96 in the bracket 66 and prevents the bar from twisting in the bracket. The presser feet are raised from the Work while the work is being fed by a cam lever |98 pivoted about midway of its length on an end of a horizontal spindle 200 secured in the bracket 24. The cam lever |98 extends forward- 1y from its pivot and its forward rounded end 202 engages the walls of a slot 203 in the presser bar |88. The cam lever |98 at its rear end has mounted on it a cam roll 204 which is held in engagement with the underside of a cam 206 on the left-hand end of the driving shaft 20 by the presser bar spring |96. The cam 206 causes the cam lever |98 to raise the presser feet after the work has been punchedand holds the presser feet raised while the work isv being fed after which the presser feet are lowered on to the Vwork while the punch is raised and returns.

The presser feet may be raised to allow the work to be presented to the machine by a treadle actuated arm 208 (Fig. 2) secured on the lefthand end of a horizontal Shaft 2|0 extending transversely of the machine and rotatably mounted in the xed bracket 24 on the overhanging arm I4 and in a bracket 2|2 (Fig. 3) secured to the machine frame. The shaft 2|0 also has secured to it an arm 2|4 which is connected by a rod 2 |6 to a treadle. The treadle actuated arm 208 engages the rear end of the cam lever |98 when the treadle is depressed and moves the cam roll 204 away from its cam 206 and raises the presser feet.

The illustrative machine is provided with an edge guide 2|8 (Fig. 1) at the right-hand side of the punch I6. The edge guide is formed o-n the lower end of an arm 220 which extends upwardly and to the right from the edge guide. 'Ihe righthand end of the arm 220 is pivoted on a vertical stud 222 (Fig. 13) secured in an adjustable block 224. The arm 220 has extending forwardly from it an arm 226 which has formed'on it an inclined face 228 (Fig. 1) arranged to be engaged by the pointed lower end of a screw 230 adjustably mounted in the block 224. The face 228 is held against the screw 230 by a leaf spring 232 secured on the block 224 and bearing against the arm 226. By adjusting the screw 230 the edge guide may be moved forwardly or rearwardly of the machine in relation to the punch. The edge guide arm 220 has pivoted on it a blade spring 234, beneath which the edge of the work passes, the left-hand end of which spring is just above the upper face of a paper strip hereinafter referred to. The left-hand end of the blade spring 234 may be adjusted upwardly or downwardly by a thumb screw 236 threaded through a lug 238 on the edge guide arm 220 and engaging an inclined face 240 on the blade spring which is held against the screw by a spring 242. The adjustable block 224 aforesaid has threaded engagement with a horizontal sleeve 244 rotatably mounted on a horizontal spindle 246 which is secured in a trunnion block 248 and extends from left to right of the machine. The sleeve 244 is prevented from moving endwise on the spindle 246 by a ange 250 on the spindle, and a nut 252 on a threaded portion of the spindle. The sleeve 244 has formed on it a knurled flange 254 by which the sleeve may be rotated to move the edge guide arm 226 toward or from the punch. The spindle 246 is secured in the trunnion block 248 by a clamp screw 256 in the block and the spindle and edge gage may be quickly adjusted toward or from the punch by loosening the screw and moving the spindle and edge guide bodily toward or from the punch. The threaded sleeve 244 provides a line adjustment of the edge guide position. The adjustable block 224 is prevented from rotating with the sleeve 244 by a horizontal pin 258 secured in the block 224 which extends through an open ended slot in the trunnion block 248. 'Ihe trunnion block 248 is pivotally mounted on the lower end of an arm 260 which is pivoted at 26| on the bracket 66. The pivot of the trunnion block 248 and the pivot of the arm 260 are horizontal and when viewed from above the machine extend rearwardly and to the right at an angle of about thirty degrees to the direction of feeding movement of the punch. The trunnion block 248 has secured on it a guide rod 262 which extends upwardly and to the right from the block. The

guide rod 262 also extends forwardly at right angles to the pivot of the trunnion. The outer end of the guide rod 262 is slidingly mounted in a swivel block 264 having a rearwardly extending horizontal stem rotatably mounted in the machine frame. When the depending arm 260 is swung upwardly toward the right the edge guide and associated parts are swung away from their operative position upwardly and toward the right and forwardly of the machine. The upward movement to the right is provided to move the edge guide out of the way when spot punching is being performed or the punch is being changed. As the edge guide is swung away from its operative position the rod 262 and swivel block 264 cause the arm 260 and trunnion block 248 to move relatively and the trunnion block and parts carried thereby to maintain substantially the same angular relationship in the machine and cause the edge guide to be raised without engaging adjacent parts of the machine beneath it. When the edge guide is moved away from its operative position its adjustment is not altered.

The base portion of the machine frame has secured at its forward end an anvil 266 (Figs. 1

and 2) against which the punch |6 operates. A

paper strip 288 passes over the anvil and is preferably fed along as the Work is fed. The punch cuts into the paper strip during the punching and is raised, as hereinbefore described, during its work feeding movement just above the strip. The paper strip 268 passes substantially horizontally from the rear of the machine beneath the rear end of the base of the frame and then upwardly through a bent tube 210 having a rectangular passage to guide the paper. The tube extends from below the anvil and up in front of the anvil and guides thepaper strip on to the anvil. The tube 210 is secured to the machine frame by a screw 212 in a slot 214 and may be adjusted to the right or left across the path of feed move` ment of the punch to position the strip laterally in relation to the punch. After passing over the anvil the paper strip passes down behind the anvil around two guide pulleys 216 mounted on the machine frame and then substantially hori- A If work of a more or less tubular nature, such as a closed shoe upper, is to be operated upon the table may be removed and a cover 218 (Figs. 14 and 15) secured on the machine frame Vin place thereof.

The cover 218 shrouds the paper strip guiding rolls 216 and tube 218 and the cover 218 and lefthand end of the base portion of the frame provide a post or arm over which a Work piece may be placed and pass down at each side of Aand if necessary beneath the post or arm. The cover 218 is secured on the machine by a pin 288 extending horizontally from the cover which enters a bore in the frame and a spring clip 282 secured on the cover which engages the frame and the cover may be removed by merely withdrawing it to the left from the frame. the cover is level with the top of the anvil and has in it a recess to receive the anvil.

The table |2 has depending lugs 284 and 288 (Fig. 2) through which and through the frame passes a rod 288. The rod 288 is held in position by a spring plunger 238 in the lug 288 the end of the plunger entering a groove on the rod. The table also has depending lugs 292 one at each side of a lug 294 on the frame. The lugs 292 have in them recesses 298 arranged to engage a pin 298 in the lug 234. When the rod 288 is Withdrawn by means of a knurled'head 388 on the rod the table can be readily withdrawn from the machine. Y

The paper strip 288 is carried by a reel 382 (Fig. 2) secured on a horizontal spindle 384 extending from left to right of the machine and rotatably mounted in one arm of a lever 388 which is pivotally mounted at 381 on a paper reel frame 388 secured to a bracket 3|8 fixed to the base of the frame |8 behind the machine. The paper strip 288 passes from this reel under and over the anvil 288 and from the anvil is wound on a second reel 3|2 secured on a horizontal spindle 3|4 rotatably mounted in the other arm of the lever 388. When the strip has been wound from one reel to the other the lever 388 may be swung to reverse the positions of the reels and the paper may be used again. A spring plunger 3 l 8 mounted in the paper reel frameY 388 is arranged to engage either of two recesses 3|8, one at each end of the lever 388 to hold the lever in one or the other of it's positions. The paper stripV isY drawn over the anvil by an intermittently rotated feed roll 328. The feed roll 328 is mounted on the paper reel frame 388 and the paper strip is pressed against the feed roll by a presser roll 322 rotatably mounted on a substantially horizontal arm 324 extending' forwardly and rearwardly` of the machine and pivoted at its rear end on a stud 328 secured in the paper reel frame 388. The presser roll 322 is 'pressed upwardly against the paper strip by aspring plunger 328 carried in the paper reel frame 388'and engaging the under side of the arm 324. The arm 324 and presser roll 322 may be pressed down to allow the paper strip to be 322`and held'down by a spring latch 338 on the arm 324 which engages Va projection 332 on the.v

paper reel frame 388. When the paper strip 288 leaves the reel 382 it passes underneath a roll 334 rotatably mounted on the stud 326 and between arface 335 on the arm 324 and a roll 338 carried by an arm 348 pivoted on the stud 328. The roll 338 is pressed against the strip by a spring 342 engaging the arm 348 and a lug 34| on the paper reel frame 388. As the paperV strip is drawn over the anvil by the feed roll 328 the roll 338 and face 338 exert a drag on the strip 288 and this ensures that the strip will be flat on the upper face of the anvil 286. The paper strip feed roll 328 is in the form of a ring and is mounted on an inner member 344 rotatably mounted on a spindle 348 secured inv thepaper reel frame 388. The member The upper face of 344 has formed in it recesses 348 having faces 358 between which and the inner face of the roll 328 are spring pressed rollers 352. When the member 344 is rotated in a clockwise direction in Fig; 2

the rollers 352 are gripped between'the faces 358l 354 connected to the aforementioned upwardly f and rearwardly extending arm'94 of the rear punch bar frame supporting arm 82 and'connected to the member. Return movement of the feed roll is prevented by a friction block 358 carried by the paper reel frame 388 and pressed against the roll by a spring 358. The arm. 94 has formed in it a radial groove 388 in Whichis Vadjustably secured a stud 382 to which the rod. 354V is pivoted so that by adjusting the stud 382 to- Y Ward or from the pivot of the arm Y84 the amount of movement imparted to the feed roll and paper strip may be varied. If the stud 382 is so posi-.

tioned in the groove 388 that the feed of the paper strip is equal to the feed of the work any adjustment of the feed of the work will correspondingly vary the feed of the paper strip. The stud 382 may, however, be adjusted in the groove 388 so v that the feed of the paper strip is less than the feed of the work, which may be desirable so that when a comparatively long work feed is being used the paper strip may by being fed a less distance be more fully used up. Y

When the feed of the work is stopped and the machine used for spot'punching as hereinbefore referred to the feed of the paper strip'by the means above described will also be stopped. It may be desirable, however, to feed the paper strip under the punch when spot punching is being performed so as to presenta fresh portion of strip beneath the punch for each punching operation. To this end, the paper strip isv fed, when the work feed is stopped, by removing the stud 382 on which is pivoted thev upper end of the rod 354 andinserting it in a radial groove 384 (Fig. 2) in anarm 388 fixed on a horizontal shaft 388 (Figs. 2 and 9) rotatably mounted in the machine frame and extending from left to right of the machine. An arm 318 fixed. on the shaft 388 is connected by a link 312 to an arm 314 pivoted on a sleeve 318 on the cam lever |56. The cam lever |58 and arm 318 may be connected together by a'spring plunger 318 (Fig. 16) in a boss'388 on the arm 314 whichenters an opening 382 in the cam lever |58 so that the paper strip' of the boss 388 on the arm 314. When the plungerY is withdrawn it may be rotated so that the lugs engage the face of the boss and hold the plunger out of engagement Ywith'the opening inthe cam lever.

' The. upper paperstrip reel spindle 3|4 (Fig. 2)V

has secured on it a pinion 388 which meshes with a gear 388 (Figs. 2 and 17) secured on Ya Vshaft.

392 rotatably mounted (in the paper reel'frame Cil 308. The shaft 392 has secured on it a flanged Sleeve 394 on which is rotatably mounted a pulley 396 driven by Ya belt from the driving shaft of the machine. The pulley is pressed against a friction washer 398 on the flanged sleeve by a Spring 400 surrounding the shaft 392 which spring is conned between a nut 492 and a collar 404 on the shaft, the spring pressing a friction washer 496, between the collar'44 and the pulley, against the pulley. The shaft 392 is therefore frictionally driven. The spindle 304 (Fig. 2) of the paper reel 392 has secured on it a pinion 408 which when the lever 3% is rotated as aforesaid to reverse the positions of the paper reels moves into engagement with the'gear 39|! and the reel 392 is driven.

The pieces of material punched from the work are removed from the machine by a suction device which includes a suction pump consisting of a circular casing 4|!) (Figs. 2 and 13) formed in two parts having clamped between the parts a circular leather disk 4|2 so that there is a space inthe casing at each side of the disk. The casing 4|9 is secured to the bracket 24 and at the center of itsleft-hand side is connected by a pipe 4|4 to an air-tight receptacle 4|@ (Fig. 3) on the bracket 3H). The 'receptacle 4|6 is also connected by the flexible pipe |42 to the punch block |92 as hereinbefore described. The leather disk 4 2 in the casing is secured at its center to a horizontal pump rod 458 slidably mounted in the casing 4|G and pressed in one direction by a spring 42!! on the rod which is confined between the casing 4|@ and a collar 422 secured on the rod. When the leather disk is actuated by the spring 429 a suction is exerted through the receptacle 4l6 and pipes 4|4 and |42 connected to it to the air in the passage |32 in the punch block |02 to draw therefrom and deposit in the receptacle pieces out from the work by the punch. The vcollar 422 on Ythe pump rod 4|3 is engaged at its side opposite to the spring by an arm 424 of a cam lever 42S which is pivoted on a vertical pivot 428 on the paper reel frame 308. Another arm 439 of the cam lever 42fa` engages an open cam face on a cam 432 which is secured on a hori- Zontal shaft 434 (Figs. 2 and 17) rotatably mounted in the paper reel frame 308. 'Ihe shaft 434Y has secured on it a gear 43S (Fig. 2) which meshes'with a gear 4,38 secured on the aforesaid pulley 396 and makes one revolution to about ve of the driving shaft 20 of the machine. The cam 432 is in the nature of a spiral with a sudden drop so that the pump spindle 4|8 is moved comparatively slowly against the action of its spring and then suddenly released so that its spring can act to create the suction. A flap valve 440 is arranged on the casing to allow air in the casing on the side of the leather disk 4 2 adjacent the pipe 4|4 to escape as the disk is actuated by the cam 432.

In the operation of the machine a shoe part blank such as a tip to be perforated is located upon the table l2 with the edge of the blank in engagement with the edge guide 2 9 and is moved beneath the oscillating punch I6, the presser feet |82, |84 and |8t being raised at this time by means of the treadle actuated arm 298 (Fig. 2) to permit insertion of the work. The punch perforates the work utilizing the paper strip 268 on the anvil 266 as a backing and moves rearwardly to feed the work, after which the presser feet hold the work stationary while the punch is raised and returned to position to perform another punching and feeding operation, this cycle being repeated until a row of perforations has been formed along a marginal portion of the blank. The length of the feed stroke of the punch is regulated as required by varying theposition of the index plate |18, Fig. l. The backing strip 258 is advanced over the anvil, in timed relation to feed movements of the punch, by the feed roll 324 (Fig. 2), which draws the strip from the reel 392, the strip being wound on to the reel 3|2 which is driven by the gear 390. After each punching operation the resulting pills which enter the cavity |32, Fig, 6, of the punch are withdrawn through the tube |49 by means of the suction pump 4|() (Fig. 18).

Having described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

l. In a perforating machine, an anvil, a backing strip adapted to be advanced across the face of the anvil, means for sustaining the backing strip comprising a pair of reels, an arm pivotally mounted upon the frame of the machine, and upon which the reels are mounted, intermittently operated mechanism for advancing the strip across the face of the anvil, a gear for driving L i one of the reels, each of the reels having a pinion adapted to engage the gear, and means for loeating a selected reel with its pinion in engagement with the gear.

2. A perforating machine comprising an anvil, .2'

a punch mounted for reciprocation relatively to the anvil for perforating work positioned thereon, a backing strip extending across the face of the anvil, means for oscillating the punch laterally of the anvil to feed the work, means for IJ.

feeding the backing strip across the face of the anvil comprising a roll operatively connected to the punch oscillating means, and auxiliary means for driving the roll when the punch oscillating means is not in operation.

3. A perforating machine comprising an anvil, a punch mounted for reciprocation relatively to the anvil to perforate work'positioned thereon, a backing strip extending across the face of the anvil, means for advancing the strip across the anvil comprising an intermittently powerdriven roll, a second roll pivotally mounted upon the frame of the machine, means for forcing the second-mentioned roll and the backing strip toward the power-driven roll, and a manually operated latch adapted to hold the second-mentioned roll in inoperative position.

4. In a perforating machine, an anvil, a punch 'mounted for reciprocation heightwise of the anvil to perforate material positioned thereon, means for advancing the punch transversely of the anvil to feed the work comprising a power-driven cam, a cam lever, a plurality of links operatively connected with the cam and with the punch, means for moving the links into neutral position in which the cam is not effective to advance the punch, a backing strip positioned upon the anvil, means for feeding the backing strip across the face of the anvil normally operative in timed relation to the punch feed, and an auxiliary backing strip feeding means adapted to be connected to the cam when the means for feeding the punch is in neutral position.

5. In a perforating machine, an anvil, a punch bar carrier, a punch bar slidably mounted in the carrier for movement heightwise of the anvil, a punch carried by the punch bar and adapted to perforate work positioned upon the anvil, means for moving the punch transversely of the anvil including a pair of links pivotally mounted upon the frame of the machine and pivotally connected to the punch bar frame, an oscillatory shaft mounted upon the frame and connected to one of the links, a feed control lever pivotally mounted upon the frame and carrying a pivot, a power-driven cam, a cam lever engaging the cam and operatively connected to the pivot and to the links whereby the extent of oscillation of the shaft in response to operation of the cam is varied in accordance with the position of the feed control lever.

6. A perforating machine comprising an anvil, a punch mounted for movement heightwise of the anvil to perforate work positioned thereon, a cam, means operatively connecting. the cam and the punch for advancing the punch transversely of the anvil to feed the work, a backing strip positioned upon the anvil, means normally connected with the punch advancing means to feed the backing strip across the face of the anvil, and independent means adapted to connect the cam and backing strip feed mechanism for feeding the backing strip when thepunch feed is inoperative.

'7. A perforating machine comprising an anvil, a punch bar frame, a punch bar slidably mounted in the frame, and a punch carried by the bar for perforating work positioned upon the anvil, a plurality of links pivotally mounted upon the frame of the machine and connected with the punch bar frame for advancing the punch across the face of the anvil, and means for driving the links adapted to be connected selectively to the punch bar frame at one or anotherV of a plurality of points for varying the extent of v movement of lateral movement of the punch.

8. A perforating machine comprising an anvil, a punch mounted for reciprocation relatively to the anvil to perforate worlgpositioned upon the anvil, means for advancing the punch across the face of the anvil to feed the work, the punch having a recess therein for receiving waste material removed from the work, a receptacle for the waste material, means connecting the recess with the receptacle, a suction pump operatively connected to the receptacle, and cam-operated means for operating the pump to cause removal of the waste material from the recess.

9. A perforating machine comprising an anvil, a punch bar mounted for rcciprocation heightwise of the anvil, a punch bar carrier mounted forV movement transversely of the an- Y vil, a punch pivotally mounted upon the punch bar and having a recess adapted to receive waste material removed from the work, the punch having also an arcuate bearing surface'adjacent the recess, the punch bar carrier having a corresponding arcuate shaped bearing surface, a passageway in the punch bar extending through the arcuate surface in alinement with the recess, a suction pump, and means connecting the suction pump with the passageway and recess.

l0. A perforating machine comprising an anvil, a punch mountedfor reciprocation relatively to the anvil to perforate work positioned thereon, a punch carrier mounted for oscillation inA the frame of the machine, means for mounting the punch in the punch carrier for movement of rotation relatively thereto, the punch having a recess therein adapted to receive waste material removed from the work, a passageway in the punch carrier in alinement with the recess, and a suction device operatively connected with the passageway for removing the waste material from the punch.

11. A perforating machine comprising a frame, an upwardly projecting arm on the frame, an anvil mounted upon the arm, a punch movable heightwise of the frame for perforating work positioned upon the anvil, a table surrounding lthe anvil and having at the rear portion thereof means for releasably engaging a portion of the frame, a pair of depending lugs on the table ad-V jacent the arm, an opening in the framev in alinement with the lugs, and a rod passing through the opening and through the lugs to detachably secure the table in position.

12. A perforating machine having a frame, an

upwardly projecting arm upon the frame, an anvil mounted upon the arm, a punch mounted for movement relatively to the anvil for perforating work positioned thereon, a backing strip'arranged to pass over the anvil, a backing strip guiding means mounted upon the arm, and a cover secured to the arm and surrounding portions of the anvil and strip guiding means.V

FRANK BYCROFT KEALL. LAWRENCEV MAWBEY.

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