US2963718A

US2963718A - Lasting machines

Info

Publication number: US2963718A
Application number: US758384A
Authority: US
Inventors: Jorgensen Bernhardt
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1958-09-02
Filing date: 1958-09-02
Publication date: 1960-12-13
Anticipated expiration: 1977-12-13

Description

Dec. 13, 1960 B. JORGENSEN 6 LASTING MACHINES Filed Sept. 2, 1958 9 Sheets-Sheet 1 In 12 e nior Bernhardf Jorgensen By his Attorney Dec. 13, 1960 B. JORGENSEN STING MACHINES 9 Sheets-Sh 2 Filed p 2, 195a w A z Dec. 13, 1960 B. JORGENSEN LASTING MACHINES 9 Sheets-Sheet 3 Filed Sept. 2, 1958 Dec. 13, 1960 B. JORGENSEN LASTING MACHINES 9 Sheets-Sheet 4 Filed Sept. 2, 1958 Dec. 13, 1960 B. JORGENSEN LASTING MACHINES 9 Sheets-Sheet 5 Filed Sept. 2, 1958 Dec. 13, 1960 B. JORGENSEN LASTING MACHINES 9 Sheets-Sheet 6 Filed Sept. 2, 1958 l [/1612 L Z34 P LJ 252 Dec. 13, 1960 B. JORGENSEN LASTING MACHINES 9 Sheets-Sheet 7 Filed Sept. 2, 1958 Dec. 13, 1960 B. JORGENSEN 2,963,718

' LASTING MACHINES Filed Sept. 2, 1958 9 Sheets-Sheet 8 Dec. 13, 1960 B. JORGENSEN ,9

LASTING MACHINES Filed Sept. 2, 1958 9 Sheets-Sheet 9 b V/k f 44 mm P United States i fiatent LASTING Maerrmns Bernhardt Jorgensen, Marbiehead, Mass., assignor to United Shoe Machinery Corporation, Flemington, Nl, a corporation of New Jersey Filed Sept. '2, 1958, Ser. No. 758,384

14- Claims. (*Cl. 12-71) This invention relates to lasting machines and is herein illustrated as embodied in a toe lasting machine constructed generally as disclosed in United States Letters Patent No. 2,324,509, granted July 20, 1943, on an application filed in the name of the present applicant, but modified, in some respects, as disclosed in United States Letters Patent No. 2,377,887, granted lune 12, 1945, No. 2,479,575, granted August 23, 1949, and No. 2,663,036, granted December 22, 1953, on applications also filed in the name of the present inventor. It will be understood, however, that in certain broader aspects the invention is not limited to embodiment in a toe lasting machine or to the exact mechanical construction herein illustrated.

The above mentioned machine to which the invention is herein shown as applied is provided with a toe rest and a heel rest which are moved into engagement with the shoe respectively on the top of the forepart and on its heel-end face to hold the shoe during the toe-lasting operation. Included among its operating instrumentalities are a toe former for conforming the toe-end portion of a multi-ply upper to the contour of the last by wiping it heightwise of the last, means for trimming the margins of all but the outer layer of the upper materials thus conformed to the contour of the last while leaving a margin of the outer layer to be lasted inwardly over an insole on the last next to the insole, and wipers for thereafter wiping the margin of the outer layer inwardly over the insole.

The machine is also provided with grippers which grip the margins of the several layers of the upper at the end and the sides of the toe respectively, the end gripper being moved lengthwise of the last and the side grippers widthwise of the last to pull the upper in outward directions prior to the action of the toe former thereon and the several grippers holding the upper under tension as the toe former is operated to wipe the upper heightwise of the last. The grippers then hold the margin of the upper spread outwardly over the wipers preparatory to the upper-trimming operation which is performed by a plurality of outwardly movable trimming knives, the grippers releasing the upper prior to the completion of the upper-trimming-operation and being retracted to avoid interference with the knives. Thereafter the upper is released also by the toe former and the operations of pulling it and of Wiping it heightwise of the last are repeated, the grippers at this time acting only on the outer layer of the upper materials. Cement is then applied to the toe end of the shoe and the wipers are perated to Wipe the margin of the outer layer inwardly over the insole into position to be secured to the insole by the cement. In this operation a portion of the cementapplying means acts as a retarder and is forced upwardly away from the insole by the pressure of the wipers and the margin of the upper thereon. While the wipers are holding the margin of the upper in overwiped position the machine comes automatically to a stop, after which it is again started to cause it to complete the cycle of operations and to return the parts to their initial positions.

The different instrumentalities are operated in proper time relation to one another by fluid-pressure means to which fluid, preferably light oil, is delivered from a manifold where the fluid is maintained under pressure by a pump. The machine is controlled by a treadle in response to the first depression of which an outlet from the manifold is closed to cause the development .of the required operating pressure therein by the pump and the grippers also are closed on the upper and in response to a second depression of which the cycle of operations is started. As is more particularly disclosed in Patent No. 2,663,036, the prior machine is also provided with another treadle by means of which control valves operated by the first-mentioned treadle may be utilized to cause opening of the grippers and the bringing of the machine to a stop at any point in the operating cycle and with still another controlling member by means of which the machine may be brought to a stop without affecting the grippers.

An object of the present invention is to adapt a machine of the above type for use in the lasting of shoes the upper materials of which are to be secured to the insole in lasted position by means of fastenings such, for example, as tacks driven through the overlasted margin of the upper material and insole and clenched on a metal plate on the bottom of the last. With this object in view, and in accordance with features of the invention, in the herein illustrated machine, which, like the prior machine referred to above, has means for shaping the toe end portion of a multiply upper to the contour of its last including a toe former for wiping the upper materials heightwise of the last and grippers for tensioning the upper materials, a plurality of trimming knives for severing all but the outer layer of the upper materials, and wipers for wiping the margin of the outerlayer inwardly over the insole in cooperation with a retarder device; the cement applying function of the retarder device is eliminated and, instead, means are provided for driving fastenings through openings in the wipers at the conclusion of their overwiping action. More particularly, and in accordance with other features of the invention, the fasteningdriving means comprises a plurality of tack drivers arranged to operate through driver passages formed in the retarder device which, as in the prior machine, is mounted on a carrier, together with the upper trimming knives, for movements between an inoperative position remote from the toe end of a shoe in the machine to an operative position adjacent to the toe end of the shoe, and a tack distributing mechanism, separate from the retarder device, for delivering a load of tacks to the several driver passages while the retarder device is in its remote and inoperative position is provided together with means for operating the drivers to drive these tacks through the wipers when the retarder device is in its operative position.

The above and other objects and features of the invention will appear in the following detailed description of the preferred embodiment which is illustrated in the accompanying drawings and will be pointed out in the claims.

In the drawings,

Fig. 1 is a view in front elevation of a .toe lasting machine embodying the features of this invention;

Fig. 2 is a view in perspective and at an enlarged scale of tack handling mechanism provided in the machine shown in Fig. 1;

Fig. 3 is a view in rear elevation of a portion of themachine showing certain operating parts which are associated with the tack handling mechanism;

Fig, 4 is a plan view of another portion of the machine with certain parts shown in horizontal section;

elements associated with the machine;

Fig. 7 is a viewin section substantially on line VII-VII of Fig. and looking in the direction of the arrows;

Fig. 8 is a plan view of still another portion of the I machine with certain parts broken away;

Fig. 9 is a view. in section substantially on line IXIX of Fig. 10 and looking in the direction of thearrows;

Fig. 10 is a View in section substantially on line X-X of Fig. 5, at an enlarged scale and looking in the direction of the. arrows; l r

Fig. 11 is a view of thatportion of the machine which is shown in vertical section in Fig. 9 asseen from below; Figs. 12 through 17 are a series of views of the operating elements of the machine shown in difierent positions assumed during a cycle of operations with certain parts shown in vertical section; and r Fig. 18 is a plan view of the bottom of, a shoe after its toe portion has been lasted and the lasting margin of the upper materials fastened to the insole in lasted position by means of tacks.

Referring to these drawings, except as modified for the purposes of the present invention and as will be explained in detail below, the herein illustrated machine is otherwise constructed substantially in accordance with the disclosure of Patent No. 2,663,036, certain features of which are described more completely in the other patents mentioned above, and reference may be made to one or more of these patents for specific mechanical details which it is not necessary or desirable to describe again in the present specification. Thus, the machine shown in these drawings has a toe rest 30, a sole rest 32, and a heel rest 34, Fig. 1, associated with a main frame construction indicated generally by the reference character 36, for holding a shoe, herein illustrated as comprising a multi-ply upper including an upper U and lining I assembled on a last La with an insole I, during the lasting of the toe end of the shoe'by means of lasting instrumentalities similar to those of the machine of Patent No. 2,663,036, and including grippers 40, one of which appears in Figs. 12-15, a toe former 42, Figs. 12-17,

toe wipers

44, 44, Figs. 8 and 12 -17, and a retarder device indicated generally by the reference character 50, Figs. 9, 11 and -17. Also, as in the prior machine, means including a plurality of knives, one of which appears in Fig. 1 and in Fig. 13 and is designated by the reference character 52, are provided for trimming away the margin of the lining 1 around the toe end of the shoe during the lasting operation;

For the purposes of this invention, the

wipers

44, 44 are provided with

openings

60, 60, Figs. 8 and 12l7, and there is associated with the retarder device 50 means for inserting fastenings through these openings for securing the lasting margin of the upper U to the insole I in lasted position. Thus, this retarder device comprises a block 70, shaped in the manner shown in Figs. 9 and 11, and provided with an inclined arcuate wear plate 72, secured thereto by screws 73. This block, which is detachably secured to a supporting bar 74 by means of screws 76, is provided with a plurality of

driver pasages

78, 78 arranged in horseshoe shape, as seen in Fig. 11. Slidably mounted in each of these driver passages is a driver 80 and these drivers are each secured to a header block 82 by means of a setscrew 84, Fig. 9. Intersecting each driver passage 78 is a groove 86 and a bore 88. Fitted into each bore 88 is the lower end of a tack feeding tube 90,.and located incach groove-86 is a tack retaining -leaf spring 92. p

Secured to the upper portion of the supporting bar 74 by means of

screws

100, 100, Fig. 5,

arethree blocks

102, 104 and 106 Fig. l0.a r-ranged. to receive avertically movable driver operating bar 108, guided laterally by

adjustable abutment screws

107, 107, and against the lower end of which the header block is yieldingly held by a compression spring 109. The retarder device 50 is supported on a carrier, indicated generally by the reference character and corresponding to the carrier 878 of the machine disclosed in Patent No. 2,663,036, by means of a pair of

parallel links

120, 122. As in the prior machine of the aforementioned patent, this carrier is mounted on a post 124, Fig. 4, which is adapted to be rotated and moved vertically to shift the upper trimming means, also supported on another portion of this carrier, and the retarder device to and from their operative positions adjacent to the toe end of a shoe being lasted. A coil spring 126 is arranged to hold the retarder device yieldingly in the position in which it is shown in Fig. 5 and as determined by an adjustable stop screw 128. During the lasting operation, as will presently appear, the retarder device is elevated against the resistance of the spring 126 and such upward movement is limited by a stop screw 130, Fig. 7. Supported on the block 106 by means of a post 132 is a header block 134 in which the upper ends of the several tack feeding tubes 90 are secured. v

The driver bar 108 is connected, at its upper end, to the outer end of a driver operating lever which is pivotally mounted at its innerend on a pin 142 in a bracket 144 secured to the carrier 110, Fig. 5. For operating this lever 21 pair of

driver springs

146, 146 are provided, Fig. 4, and swinging movement of this lever, in one direction, is limited by an adjustable stop screw 148 adapted to engage an abutment block 150 on the carrier 1'10. Supported in a bracket 152, secured to a portion of the carrier by means of screws 154, Figs. 4 and 7, is a cylinder 156, see also Fig. 5, in' which there is fitted a piston 158 having a transverse slot 160 through which a pin 162, carried in the upper portion of the cylinder, extends. Formed integrally with the piston 158 is a curved arm 164 and a piston return spring 166 is stretched between this arm and an eye-bolt 168, mounted in the bracket 152, see also Fig. 7. Pivotally mounted on a stud 170, carried by the piston 158, is a latch arm 172 having a shoulder surface 174 adapted to engage a pin 176 'which projects outwardly from one side of the driver operating lever 140, Fig. 5. The latch arm extends upwardly beyond the aforementioned shoulder surface and is provided with a guide surface 178.

A link 180 connects the latch arm to the upper arm of a trip lever 182 which is pivotally mounted on a portion of the carrier 110 by means of a stud 184. A coil spring 185 connected to this arm tends to hold the latch arm 172 in the position shown in Fig. 5 and with the guide surface 178 against the pin 176. Accordingly, when fluid under pressure is admitted to the cylinder 156 beneath the piston 158 through a conduit 186, connected to the valve which admits fluid under pressure to the cylinder containing the piston which operates the trimming knives and which corresponds to valve 822 of the machine disclosed in Patent No. 2,324,509, the piston 158 will be elevated to retract the

drivers

80, 80. In the herein illustrated machine, the aforementioned valve is opened substantially at that point in the cycle indi cated in the timing chart shown in Fig. 52 of the lastmentioned patent, but instead of closing at the point in the operating cycle indicated on that chart, this valve is kept open until near the end of the operating cycle and after the wipers have been advanced and closed.

Referring to Figs. 6 and 8, the wipers 44 are associated with a wiper carrier, indicated generally by the reference character and corresponding to the wiper carriers 346 of Patent No. 2,324,509 and 716 of Patent No. 2,663,036. This carrier is mounted for sliding movement relatively to a wiper head 192 in the direction of the arrow in Fig. 6, as inthe machines of the mentioned patents. swinging movement imparted to it during the operation of The wiper head 192, in turn, is mounted for.

23 the machine by a pair of fluid pressure operated pistons, one of which is shown in Fig. 6, and indicated by the reference character 260. Each of these pistons is fitted within a cylinder 292 and is connected to the wiper head 192 by means of a link 204. After the

wipers

44, 44 have been advanced and closed in response to movement of the carrier 196 to the left, Fig. 6, by means of a fluid pressure operated piston, not shown, the wipers are caused to exert increasedpressure on the overlasted margin of the upper materials as the result of the exhausting of operating fluid from the cylinders 232 beneath the pistons 26!), through a conduit 266 and the admitting of fluid under pressure above these pistons, through conduit 2G8 and passageways 269 in the cylinders 202, generally in accordance with the disclosure of Letters Patent No. 2,479,575, referred to above. Mounted on a portion of the machine frame 36, adjacent to the wiper head 192, is a cylinder 21% containing a piston 212 which has an upwardly projecting stem 214 which is urged downwardly by a return spring 216. At its lower end, the cylinder 21% is connected to the passageway 23? by means of a conduit 218, as shown in Fig. 6.

As in the prior machines described in Patents Nos. 2,324,509 and 2,663,036, the upper tensioning grippers are associated with a gripper support which is indicated generally by the reference character 23%), Fig. 6, see also Fig. 3, this gripper support being directly above the wiper head and wiper carrier. Slidably mounted on the upper side of this gripper support, between

guide studs

232, 232 and beneath holddown bars 234, 234, is a tripping plate 236 having an upturned end 238 and a downwardly projecting portion 240. Pivotally mounted on a bracket 25%, supported on a pipe 252 which forms a part of the fluid pressure system of the machine, is a bell-crank lever 266 having one downwardly extending arm 262 and two

upstanding arms

264, 266 adapted to embrace the downwardly extending portion 246 on the tripping plate 236, one of these arms being provided with an anti-friction roller 26S. Connected to the arm 262 of this bell-crank lever is one end of a rod 273, the other end of which extends through a clearance bore 272 formed in one arm of a lever 274. This end of the rod 276 is threaded to receive a nut 276 which bears against a thrust collar 278 interposed between this nut and the lever 274. The other arm of this lever, which is pivotally mounted on the wiper carrier 19% by means of a stud 280, extends to the left, as indicated in Fig. 6, and is provided with a laterally extending projection282, see Fig. 1, and a downwardly extending portion 284 into which there is threaded an adjustable stop screw 286. A coil spring 288 connected to the arm 262 of the bellcrank lever 260 yieldingly holds the bell-crank lever in the position shown in Fig. 6 with the roll 268 bearing against the righthand end of the gripper support 230 and with the upturned end 238 of the tripping plate 236 displaced somewhat to the left from the lower arm of the trip lever 182.

As the wiper carrier 190 is advanced during the operation of the wipers, the left-hand portion of the lever 274 will assume the position indicated in dotted lines in Fig. 6 with the laterally extending portion 282 thereof directly above the stem 214 of the piston 212. Also, as a result of this movement of the wiper carrier 190, the bell-crank lever 261 will be swung in a clockwise direction, against the resistance of the spring 288, and the tripping plate 236 will be shifted to the right to a position in which its upturned end 238 is substantially in contact with the trip lever 182, see dotted line position indicated in Fig. 6. Accordingly, when at the conclusion of the inwiping operation, and after the

wipers

44, 44 have completed their advancing and closing movement, fluid under pressure is admitted into the conduit 268, passageway 209, conduit 218, and cylinder 210, the piston 212 will be elevated, and, through the action of the lever 274, rod 279, bell-crank lever 26i3, tripping plate 236,

3 lever'182, and link 18%, the latch arm'172 will be swung to the left, Fig. 5, thereby releasing the driver arm140 to the action of the driver operating springs 146 and causing the drivers 80, to be actuated.

When the carrier is in the position shown in Fig. 4, the retarder device 50, together with the tack driving mechanism which is associated therewith and supported on the carrier 110, will be in its inoperative position. As will be understood from reference to the prior patents mentioned above, especially Patents Nos. 2,324,509 and 2,663,036, the carrier is in this position at the beginning of each operating cycle and returns thereto at the conclusion of each operating cycle. As is shown in Figs. 4 and 5, when the carrier is in this position, the upper end of each of the tack tubes 96 is in vertical alinement with the lower end of a tack feeding tube 300 mounted in a bracket 302 which is supported on a portion of the machine frame 36, see also Fig. 5. At their upper'ends, the tubes 339 are connected to a tack separating and distributing mechanism of knownconstruction substantially as disclosed in United States Letters Patent No. 1,129,881, granted March 2, 1915, in the name of Ronald P. Mc- Feely, and which includes a separator 364, a tack hopper 306, and a tack pot 363, this mechanism being adapted, as will be understood by reference to the mentioned patent, to separate and deliver a tack into each of the tubes 3% in response to a single oscillation of a main drive shaft, herein identified by the reference character 310, Fig. 3. For thus oscillating the shaft 310, at a time in the operating cycle when the carrier 110 and parts mounted thereon are in the positions shown in Figs. 4 and 5, and with the tubes 3% in register with the tubes 93, the following arrangement is provided.

Pivotally mounted on an upright arm 320, supported on a bracket 322, associated with the tack separating and distributing mechanism, is a lever 330 which is connected to the connecting rod 332 of a piston 334 and also to a link 336, Figs. 1, 2 and 3. The piston 334 is slidable within a cylinder 337, the lower end of which is closed and in communication with the upper end of a conduit 333, this cylinder being mounted on a laterally extending portion of the aforementioned bracket 322. The link 336-is connected to a rack bar 34% which is mounted for vertical sliding movement in the bracket 322 and which has rack teeth 342 formed thereon in mesh with a pinion 344, fast on the shaft 310, Fig. 3. A pair of coil springs 359, 356 connected at their upper ends to a crossbar 352, resting in a notch 354 formed in the lever 33%), Fig. 2, and at their lower ends to a pin 356 which extends through a portion of the bracket 322, tend to swing the lever 33! in a counterclockwise direction, Figs. 1 and 2, and clockwise direction, Fig. 3, to the extent determined by one or two stop means, not shown but associated with the tack separating and distributing mechanism and adapted to limit the angular oscillating movements of the tack pot 363 and the reciprocating movements of other parts associated with this mechanism. The conduit 338 is connected, at its lower end, to one side of a valve 366 having a plunger 362 which is slidable within a bore 364 in the valve casing, Figs. 3 and 4. Also connected to this valve, in a location diametrically opposite to the conduit 338, is a corn duit 366 which leads to the pressure manifold of the fluid pressrue system of the machine, and an exhaust conduit 367 in communication with the bore 364. The valve plunger 362 has a cross passage 368 which provides communication between the two conduits 366 and 333 when the valve plunger is in the position in which it is shown in Figs. 3 and 4, and also with a cutaway portion 379 which connects the conduit 338 to the exhaust conduit 367 when the valve plunger is shifted a short distance to the left, Fig. 3, and to the right, Fig. 4, thereby shutting off communication between the

conduits

366 and 338.

The valve plunger 362 is held in the position in-Which it is shownin Figs. 3 and 4 in the following manner. Pivotally connected to the plunger is one end of a rod 380,

the other end of which is slidably supported in the upper portion of a bracket member 382. This bracket member is carried by a connecting rod 384 associatedwith a piston 386, this piston and its connecting rod being provided for rotating the post 124 in one direction, against the resistance of a return spring 388, in the manner explained in detail in the aforementioned patents. Also mounted on this bracket member is a stud 390 on which there is rotatably supported a hub portion 392 having formed integrally therewith at one end an arm 394- and at its other end an abutment bar 396 provided with a cutaway portion 398, Fig. 3. Secured to the rod 380 is a sleeve member 400 carrying an adjustable abutment screw 402, and a collar 404 between which and a plate 406, supported on the valve 360, a compression spring 408 is interposed. Connected at its lower end to the arm 394 is a Bowden wire 410 which extends upwardly through a casing 412 and also through a guide stud 414 on the rack bar 340. Secured to the upper end of this Bowden wire, by means of a screw eye 416, is a collar 418, and stretched between this screw eye and a pin 420, carried by the rack bar, is a coil spring 422.

With the arrangement just described, when pressure of operating fluid is built up in the manifold associated with the fluid pressure system of the machine, in repsonse to an initial depression of the control treadle, the piston 334 will be moved upwardly by fluid under pressure passing from the conduit 366 to the conduit 338 through the bore 368 in the valve plunger 362, Fig. 4, to rotate the tack pot 308 in one direction to an extent determined by the other of the two aforementioned stop means, and as this piston reaches the limit of its upward movement, the abutment bar 396 will be moved out of engagement with the abutment screw 402, as a result of a partial rotation of the hub member 392, by the Bowden wire 410. Now the spring 408 will shift the valve plunger 362 to the left, Fig. 3, to the right, Fig. 4, thereby shutting off communication between the conduit 366 and conduit 338 and connecting the latter conduit to the exhaust conduit 367 through the cutaway portion 370 on the valve plunger 362.

Springs

350, 350 will now return the piston 334 to the position shown in Fig. 3, thus completing one oscillation of the shaft 310 and effecting a single operation of the tack separating and distributing mechanism to separate and to deliver a load of tacks to the

tubes

300, 300 and thence, through

tubes

90, 90, to the

driver passages

78, 78 in the block 70 of the retarder device 50, Fig. 9. During this return of the piston 334 and rack bar 340 to the position shown in Fig. 3, the abutment bar 396 will be swung reversely and into contact with the side of the abutment screw 402 the end of which now bears against the right-hand side of the bracket 382, spring 422 yielding to permit this action. When the piston 386 is operated to swing the post 124, together with the carrier 110, at an intermediate point in the operating cycle of the machine, the bracket 382 will be moved to the left, Fig. 3, and to the right, Fig. 4, thereby permitting the abutment bar 396 to be returned to the position shown in Fig. 3 with its cutaway portion 398 in engagement with the rod 380. Accordingly, when the post 1245 and carrier 110 are swung reversely by the spring 388, the various parts will be returned to the positions shown in Figs. 3 and 4, and conduit 366 will again be placed in communication with the conduit 338.

The action just described occurs at the very end of the operating cycle of the machine and just about as the manifold is connected to exhaust. Thus, there will probably not be suflicient pressure of operating fluid in the manifold at this time to elevate the piston 334, against the resistance of the

springs

350, 350. However, if the pressure of the operating fluid in the manifold should be suflicient to cause a cycle of operation of the tack separating and distributing mechanism, in response to upward movement of the piston 334, no harm will be done as the carrier'llll will have beenreturned to the position shown in Fig. 4 and the tubes 300 will be in register with the tubes 90. Also, when the treadle is initially depressed prior to the beginning of the next cycle of operation of the machine, no cycling of the tack separating and distributing mechanism can occur, inasmuch as the abutment bar 396 will have been swung away from thescrew 402 and cannot be returned to the position in which it is shown in Fig. 4 until the post 124 and carrier 110 have again been operated to move the retarder device to its operative position and then to return it to its inoperative position. Thus, whether the cycling of the tack separating and distributing mechanism occurs at the beginning or at the end of an operating cycle of the machine, it can occur only once during each operating cycle and then at a time when the fastener inserting mechanism is in the position shown in Fig. 4 and with the tubes 300 in'aline' ment with the tubes 90.

Referring to Fig. 2 of the drawings, the tack pot 308 is provided with a radially extending boss portion 430 and rotatably mounted on the bracket 322 is an arm 432 carrying a stop lug 434. When, for any reason, it is desired to eliminate the cycle of operation of the tack separating and distributing mechanism, while permitting the toe lasting machine to perform its cycle of operations, the arm 432 may be swung in a counterclockwise direction, Fig. 2, to bring the stop lug 434 beneath the boss portion 430. In order to facilitate the movement of the tacks along their raceways, a hammer 440, mounted on a stud 442, is provided. A coil spring 444 is adapted to swing the hammer in one direction and a pair of operating pins 446 are arranged to be rotated by means of friction drive wheels 448, these pins each cooperating with a surface 450 formed on an arm 452 which carries the hammer, to swing the hammer in the opposite direction and then to release the hammer to the action of spring 444.

Except for the manner in which the lasting margin of the upper U is secured to the insole I, the machine of the present invention operates in the same manner as the prior machines described in the above-mentioned patents. Thus, in response to an initial depression of the control treadle, the upper materials around the toe end of the shoe being lasted are seized by the grippers as they close, see gripper 40, Fig. 12, while a second depression of this treadle will start an automatic cycle of operations of the machine. In addition to causing the closing of the grippers, the building up of pressure in the manifold, as a result of the initial depression of the control treadle, will effect a cycle of operation of the tack separating and distributing mechanism, if such cycle of operation has not been efiected at the conclusion of the previous cycle of operation of the toe lasting machine, as explained above. Therefore, at the beginning of each cycle of operations of the toe lasting machine, a load of tacks will have been separated and delivered to the driver passages 78 in the retarder device 50, as indicated at t in Fig. 9, the several tack drivers 80 at this time being in their lowermost positions to which they were moved when the tacks were driven in the previous operating cycle of the toe lasting machine.

During the automatic operating cycle of the machine, the upper materials are tensioned by the grippers and are shaped to the toe end of the last by means of the toe former 42 and all but the outermost layer of the upper materials, i.e., the upper U, are trimmed away by the trimming knives 52, Fig. 13, in the same manner as in the prior machines. Also, the upper alone is subject to another tensioning and shaping action by the grippers and toe former, Figs. 14 and 15. Just before the grippers open to release the lasting margin of the upper U, the

wipers

44, 44 commence to advance and close, thereby snubbing the lasting margin of the upper against the inclined surface on the plate 72 of the retarder 50, which, following the trimming operation, had been shifted from its inoperative position, Figs- 4 and 5, to its operative position as shown in Fig. '15. As will be seen by refer ence to the last-mentioned figure, the tack drivers at this time will have been elevate-:i'as the result of the admission of fluid under pressure to the cylinder 156 through the conduit 186 which, as previously explained, occurs concurrently with the operation of the trimming knives, so that the tack t in each of the driver passages 78 now drops down onto the-tack retaining spring 92.

As the wipers continue their advancing and closing movements, the retarder device is forced upwardly, against the resistance of the spring 126, Fig. 5, so that the wipers pass thereunder, Fig. 17, and finally complete their advancing and closing movements as they arrive at the positions shown in Fig. 16, with the lasting margin of the upper wiped inwardly over and pressed against the toe end of the insole I. As the resultof the advancing and closing movements of the wipers, which are effected by movement of the wiper carrier 190 to the left, Fig. 6, the tripping plate 236 and lever 274 will have assumed the positions shown in dotted lines in this figure. Hence, when operating fluid'is exhausted from beneath the piston 29% and fluid under pressure is admitted to the cylinder 292 above this piston, through the conduit 2%, to cause the wipers to press more firmly against the lasting margin of the upper, which occurs just before the main control shaft of the machine is brought to a stop, see particularly Patent No. 2,479,575, mentioned above, the piston 212 will be elevated to trip the latch arm 172 and thereby cause the drivers to be actuated by their springs 146 to drive the tacks t through the openings ed in the wipers and through the lasting margin of the upper and insole as shown in Fig. '16, the points of these tacks being turned over and clenched by engagement with a metal plate P on the bottom of the last.

At this point in the operating cycle of the machines of the patents mentioned above, in which the lasting margin of the upper is to be secured in lasted position to the insole by cement, the main control shaft remains stopped for a predetermined time interval, which maybe varied by the adjustment of a needle valve, see valve 1416 of the machine of Patent No. 2,324,509, at the conclusion of which interval the rotation of the control shaft is continued to complete the operating cycle and return the various operating elements to their original positions. In the herein illustrated machine, inasmuch as there is no need for a continued pressure dwell, the aforementioned time interval may be reduced to a'minimum, and even substantially eliminated, by suitable adjustment of the mentioned needle valve, as will be readily understood. In any event, as the control-shaft continues its rotation after this dwell interval and following the driving of the tacks t, the retarder device is first elevated and then returned to its inoperative position, Figs. 4 and 5, prior to the retraction and opening of the

wipers

44, 44. Fig. 18 shows the toe end of a shoe S after its toe end has been lasted and the lasting margin of the upper U secured to the insole by means of tacks t, in the machine of this invention. As will be readily understood, the tack block 70 and driver assembly, including the several drivers 30 and the header block to which they are attached, may be easily removed and replaced by a tack block and driver assembly of different shape or size to accommodate various styles and .sizes of shoes. However, one size and shape of'tack block and driver assembly may be used with satisfactory results for the lasting of a wide run of sizes of shoes of the same style and for different styles in which the toe ends of the shoes do not vary extremely in shape.

While the features of the presentinvention are of particular significance in connection with the lasting of the toe ends of shoes having multi-ply upper materials, inasmuch as the trimming away of all but the outermost layer during the toe lasting operation greatly facilitates the lasting operation as well as making itpossible satisfactorily to secure the lastingmargin of the outermost layer, i.e., the upper U, to-the insolein lasted position by means of relatively small tacks driven through the lasting margin and insoie and clenched against a metal plate on the last, these'features are also of great utility in connection with the toelasting of shoes having unlined uppers. In lasting shoes of this type, the trimming operation, which of course is not required, may be eliminated in the manner suggested in Patent No. 2,663,036, or the features of this invention could be embodied in a toe lasting machine of this type provided with the improved controlling means disclosed and claimed in a copending application for United States Letters Patent, Serial No. 434,271, filed June 3, 1954, in the name of the present applicant, and now E atent No. 2,877,627, issued March 17, 1959.

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

l.- in a machine for lasting the toe end of a shoe having a multi-ply upper assembled on a last with an insole, means for conforming the several layers of the upper materials to the shape of the toe end of the last, means for trimming away the lasting margin of selected layers of upper material at the toe end of the shoe, means for thereafter laying the lasting margin of the remaining upper material inwardly over and for pressing said lasting margin against the bottom of the insole, a retarder device adapted to cooperate with said overlaying means, means carried by said retarder device for inserting fastenings into the overlaid lasting margin and insole to secure the lasting margin to the insole in lasted position, and means for supplying fastenings to said retarder device.

2. in a machine for lasting the toe end of a shoe having a multi-ply upper assembled on a last with an insole, means for conforming the several layers of the upper materials to the shape of the toe end of the last, means for trimming away the lasting margin of all but the outer layer of upper material at the toe end of the shoe, wipers for thereafter wiping the lasting margin of said outer layer of upper material inwardly over and for pressing said lasting margin against the bottom of the insole, said wipers being provided with openings, a retarder device adapted to cooperate with said wipers, means carried by said retarder device for driving tacks through said openings into the overwiped lasting margin and insole to secure the insole in lasted position, and means for supplying tacks to the retarder device.

3. In a machine for lasting the toe end of a shoe having an upper assembled on a last together with an insole, means for conforming the upper to the toe end of the last, wipers for thereafter wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, a retarder device adapted to cooperate with said wipers as the lasting margin is wiped inwardly over the insole, means carried by the retarder device for driving tacks into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, and means for supplying tacks to said retarder device.

4. In a machine for lasting the toe end of a shoe having an upper assembled on a last together with an insole, means for conforming the upper to the toe end of the last, wipers for thereafter wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, a retarder device movable from inoperative position remote from the toe end of the shoe to an operative position adjacent to the toe end of the shoe for cooperating with said wipers as the lasting margin is laid inwardly over the insole, means carried by the retarder device for inserting fastenings into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, and means for supplying fastenings to the retarder device when it is in said inoperative position.

5. In a machine for lasting the toe end of a shoe having an upper assembled on a last together with an insole, means for conforming the upper to the toe end of the last, wipers for thereafter wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, a retarder device movable from an inoperative position remote from the toe end of the shoe to an operative position adjacent to the toe end of the shoe for cooperating with said wipers as the lasting margin is wiped inwardly over the insole, said wipers being provided with openings, means carried by the retarder device for inserting fastenings through said openings into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, and means for supplying fastenings to the retarder device when it is in said inoperative position.

6. In amachine for lasting the toe end of a shoe having an upper assembled on a last together with an insole, means for conforming the upper to the toe end of the last, wipers for thereafter wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, a retarder device movable from an inoperative position remote from the toe end of the shoe to an operative position adjacent to the toe end of the shoe for cooperating with said wipers as the lasting margin is wiped inwardly over the insole, said wipers being provided with openings, means carried by the retarder device for driving tacks through said openings into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, and means for supplying tacks to the retarder device when it is in said inoperative position.

7. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, means for laying the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, and means for inserting fastenings into the overlaid lasting margin and insole to secure the lasting margin to the insole in lasted position, said fastening inserting means comprising a fastening inserting device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end portion of the shoe, means for moving said device to and from said positions, a fastening distributing mechanism separate from the device for delivering fastenings to said device when it is in its inoperative position, and fastening inserting drivers for inserting fastenings, delivered to said device while in its inoperative position, when the device is moved to its operative position.

8. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, wipers for wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, and means for driving tacks into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, said tack driving means comprising a tack driving device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end portion of the shoe, means for moving said device to and from said positions, a tack distributing mechanism separate from the device for deliven'ng tacks to said device when it is in its inoperative position, and tackd-rivers for driving tacks, delivered to said device while in its inoperative position, when the device is moved to its operative position.

9. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, means for laying the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, said overlaying means being provided with openings, and means for inserting fastenings through said openings into the overlaid lasting margin and insole to secure the lasting margin to the insole in lasted position, said fastening inserting means comprising a fastening inserting device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in,the machine to an operative position adjacent to said end portion of the shoe, means for moving said device to and from said positions, a fastening distributing mechanism separate from the device for deliven'ng fastenings to said device when it is in its inoperative position, and fastening inserting drivers for inserting fastenings, delivered to said device while in its inoperative position, whenthe device is moved to its operative position.

10. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, wipers for wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, and means for inserting fastenings into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, said fastening inserting means comprising a fastening inserting device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end por tion of the shoe and provided with fastening receiving passages, means for moving said device to and from said positions, a fastening distributing mechanism separate from the device having fastening discharge passages adapted to register with said fastening receiving passages for delivering fastenings to said device when it is in its inoperative position, and fastening inserting drivers for inserting fastenings delivered to said device while in its inoperative position, when the device is moved to its operative position.

11. In a machine for lasting the end of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, means for laying the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, said overlaying means being provided with openings, and means for driving tacks through said openings into the overlaid lasting margin and insole to secure the lasting margin to the insole in lasted position, said tack driving means comprising a tack driving device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end portion of the shoe, means for moving said device to and from said positions, a tack distributing mechanism separate from the device for delivering tacks to said device when it is in its inoperative position, and tack drivers for driving tacks, delivered to said device while in its inoperative position, when the device is moved to its operative position.

12. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, wipers for wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, and means for driving tacks into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, said tack driving means comprising a tack driving device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the'machine to an operative position adjacent to said end portion of the shoe and provided with tack receiving passages, means for moving said device to and from said positions, a tack distributing mechanism separate from the device having tack dis- 13 charge passages adapted to register with said tack receiving passages for delivering tacks to said device when it is in its inoperative position, and tack drivers for driving tacks, delivered to said device while in its inoperative position, when the device is moved to its operative position.

13. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, means for laying the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, said overlaying means being provided with openings, and means for inserting fastenings through said openings into the overlaid lasting margin and insole to secure the lasting margin to the insole in lasted position, said fastening inserting means comprising a fastening inserting device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end portion of the shoe and provided with fastening receiving passages, means for moving said device to and from said positions, a fastening distributing mechanism separate from the device having fastening discharge passages adapted to register with said fastening receiving passages for delivering fastenings to said device when it is in its inoperative position, and fastenng inserting drivers for inserting fastenings delivered to said device while in its inoperative position when the device is moved to its operative position.

14. In a machine for lasting the end portion of a shoe having an upper assembled on a last together with an insole, means for shaping the upper to the end portion of the last, wipers for wiping the lasting margin of the upper inwardly over and for pressing said lasting margin against the bottom of the insole, said wipers being provided with openings, and means for driving tacks through said openings into the overwiped lasting margin and insole to secure the lasting margin to the insole in lasted position, said tack driving means comprising a tack driving device movable heightwise and transversely of the shoe from an inoperative position remote from the end portion of a shoe in the machine to an operative position adjacent to said end portion of the shoe and provided with tack receiving passages, means for moving said device to and from said positions, a tack distributing mechanism separate from the device having tack discharge passages adapted to register with said tack receiving passages for delivering tacks to said device when it is in its inoperative position, and tack drivers for driving tacks, delivered to said device while in its inoperative position, when the device is moved to its operative position.

References Cited in the file of this patent UNITED STATES PATENTS 1,980,435 Pym et al. Nov. 13, 1934 2,060,085 Iorgensen Nov. 10, 1936 2,324,509 Jorgensen July 20, 1943