Patent GB-491871-A (GB)
Title: Improvements in or relating to the lasting of moccasins
IPC: A43D113/00
Filed: 1937-03-11
Abstract: 491,871. Lasting moccasins. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation) March 11, 1937, No. 7137. [Class 17 (i)] In lasting moccasins, the upstanding margin of the fore-part of the upper, which upper extends over the bottom of the fore-part of the shoe, is wiped heightwise over the top of the fore-part in one operation, a retaining device brought into position to hold the toe portion in lasted position, and this device secured to the last. This device may provide a cutting gauge for trimming the forepart, a toe-piece covering the top of the forepart, being afterwards secured to the trimmed edge. A lasting cable is used to work the upper heightwise of the last, the margin of the upper being turned outwardly over the cable and pressed against the cable by spreading means. The bottom of the fore-part of the shoe rests on a bed plate 30, Fig. 4, the rear part being held in a heel-end clamp 32 which is traversed along the bed-plate by a handle on a screw 52 until the toe of the shoe abuts against a bracket 60. The margin of the fore-part of the upper is turned over a lasting cable 34 and pinched between fingers 150 and the margin of a plate 156 having a corrugated lower surface. The nngers 150 are urged to grip the upper by springs 160, and are carried by a block 154 loosely engaging a rod 166 and urged downwardly by a spring 164, the rod being carried by a pivoted arm urged upwardly by a spring and depressed by a cam turned by a handle. The block is guided by pins engaging sockets 172, 178 in the last. At the sides of the forepart the lasting cable 34 passes through short lengths 138, Fig. 6, of flexible metallic tubing enclosed in a folded length of grain leather clamped at the upper ends of levers 92, 94 each pivoted to an arm 96 integral with a gear segment 98 pivoted at 100, the two segments meshing with each other. The levers are guided by a parallel link arrangement comprising a link 134 connecting each lever with an arm 132 moving with a segment 130, these segments also meshing with each other. The outer ends of the levers are also restrained by rods 118 engaging holes in the tails 120 of the segments 130, springs 122 urging the wipers towards the shoe. The segments 98 are swung by a cam 104 provided with a handle 114 and engaging a follower 108 at the end of a link 110 connected by a link 112 with one of the segments. The cable 34 is tightened by a handle 80, Fig. 2, carrying a pawl 82 driving a ratchet wheel moving with a cam 72 having a follower 76 on a pivoted arm 62 to which the ends of the cable are secured. The pawl has a curved tail by which it is released when the handle is fully depressed. When the lasting cable is fully tightened, it urges upwardly the block 154, Fig. 4, and engages the edge of a plate 168. The upper is held in this position by a pair of clamping plates 38 pivoted together, each being advanced by a push rod 232 and guided by a roll and slot. The carrier 212 for the plates is urged toward the shoe by a spring 220 and supported by a plunger 238 urged upwardly by a spring 266 mounted in a guide 240 slidable towards and away from the shoe, springs urging it outwardly, and a chain 248 secured to a treadle, inwardly. A latch 276 urged to operative position by a spring 278, maintains the clamping plates in their operative plane. To facilitate removal of the shoe, withdrawal of the latch by its knob allows a spring 270 to move the plates away from the shoe. In a modification, the sleeves over the lasting cable and their actuating mechanism is substituted by wiping members 354, Fig. 11, on each side of the shoe, there being a pair of resilient plates on each side each divided into three sections and covered by a piece of thin grain leather, each being mounted with some play on a member pivoted to an arm 406 adjustably connected to an arm 402 linked to a cam-operated arm 392 actuated by a handle 384. A control rod 414 and spring 412 allow yield as in the first construction. Stops 424 determine the normal position of the wipers. In this construction, the retarding member comprises a sheet 426 of vulcanized rubber urged to operative position by spring fingers 432. At the toe end, a flexible member 320, Fig. 15, is folded over the lasting cable, the member presenting a series of links 322 diverging from the cable and maintained taut by spring fingers 326. The upper side of the member is urged downwardly by a bar 336. When lasting is complete, a clamping block 40, Fig. 16, is engaged over the edge of the upper, and the shoe may be removed from the machine. To hold the block while a screw 288 is positioned, a lever 472, Fig. 8, may be actuated by a cam 490 having a handle 496, after the retarding means have been swung away from the shoe. Upper clamping means, Fig. 17, are then positioned over the fore-part. A resilient plate 289 conforms to the fore-part periphery, and has its upper margin curved inwardly to engage the upper margin. Downwardly and inwardly extending ears 300, 302 connect the resilient plate with a T-shaped member 296. A spring presser plate 310 and a screw-pin 292 secure the device in position.