Patent GB-511958-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1938-02-26
Abstract: 511,958. Lasting machines. UNITED SHOE MACHINERY CORPORATION. Feb. 26, 1938, No. 6091. Convention date, Feb. 27, 1937. [Class 17 (i)] In a toe-lasting machine of the kind wherein a fixed plate engages the fore-part of the insole to determine the position of the work, the wiper carrier is mounted on swinging supports one of which moves heightwise to effect upwipe, a stop determines the point at which the wipers may commence the in-wipe, a manually operated lever for advancing the wipers is mounted to swing in a vertical plane, and a toe rest, clamping the work against the insole plate, is automatically released at the end of the operation. The end of the wiper carrier farthest from the shoe is supported by a lever 70 pivoted to a three armed lever 66 connected by a link 78 to an arm rocked by an arm 84 to advance and retract the wiper carrier. To adjust the wipers by raising or lower:ng this end of the carrier, a handle 112 rotates an adjusting screw connecting the lever 70 with an arm 100 of the lever 66. The end of the wiper carrier nearest the shoe rests on a link 98 pivoted to an arm which can be rocked by a double treadle 118, 120 which serves for the usual raising and lowering of the wipers. The wipers 52 are secured to holders 56 each having an upstanding arcuate rib 58 engaging a guideway in a cover plate on the wiper carrier for causing the wipers to perform their closing movement as they advance. The wipers are actuated by rods 124 pivoted to levers 128, 130 fulcrummed to the carrier, the other ends of the levers being linked to an arm or a rock shaft 146 by which the uppers are adjusted, an arm 148 being rocked by a screw 152 provided with a handle 164. The toe rest comprises a block 188 supported by a ball 186 and covered by a layer of felt 194 and leather 196. The ball is supported by a block 180 from a link 12, and rollers 200, 202 are positioned between the block 188 and inclines on its support. The construction allows self-adjustment of the pad to the shoe. The link 12 is guided by a link 24 and actuated by a lever 14 linked to a treadle 20 provided with a locking pawl 32 for holding it in depressed position where it clamps the shoe against an insole plate 208 carried by a fixed bracket 4. The pawl has an arm 36 which is linked to a treadle 40 for releasing the shoe when desired. Also, the treadle 120 carries a pin engaging a slot 170 in a link pivoted to the pawl, so that after the wiping of the upper inwardly, movement of the 'treadle in a direction to raise the wipers disconnects the pawl and releases the toe rest. For welted work, a heel rest 212 is used, supported by a link 226 and actuated by a lever 218 provided at its free end with teeth engaging a locking pawl 236. This pawl is linked to the treadle 40, so that the heel abutment is allowed to fall back as the toe rest descends, to release the shoe. To determine the point, at the end. of the upwipe, at which the inward movement of the wipers should start, an adjustable stop 258 secured to the frame of the machine co-operates with a lug 272 on a member urged to the left by a spring and sliding in a groove in the cover plate of the wipers. When the wipers have been advanced, these members are out of line, so that the wipers may be raised before retraction.