Patent GB-189808067-A (GB)
Title: Improvements in and connected with Machinery Employed in Lasting or Stretching parts of Boots and Shoes.
Inventor: BROOKES ALFRED GEORGE
Filed: 1898-04-05
Granted: 1899-04-01
Abstract: 8067. Brookes, A. G., [Consolidated & McKay Lasting Machine Co.]. April 5. Lasting.-Relates mainly to automatic and manual means for adapting the wiper mechanism of lasting- machines to right or left hand lasts of varying types. The shaft 33, Fig. 3, is driven from the main shaft, which is controlled by a treadle-operated clutch and brake. The crosshead 39, having plates 42 to which the spring- controlled girth fingers 45 are pivoted, and the plate 51 are raised together by cam discs on the shaft 33 until the fingers 45 are slightly above the last. The fingers then drop a little, and the slots 54 in the plate 51 cause the pivoted levers 56 to throw the plates 42 inwards for lasting. The jack-post is raised by depressing the cam-edged treadle 69, which is released after lasting by a dog 70* on the shaft 33 striking a bell crank on the treadle. The toe-lasting device comprises a sliding carriage 72, Fig. 12, carrying on adjustable studs 74 a tipping-plate holder 75 having studs 78 on which the tipping-plate 79 is pivoted. When the cam 82 is rotated, the slide 85 moves to the left and causes the bell crank 86 to raise the end wiper 91, the roller 99 withdraws the abutment slide 100, and the roller 101 projects the wiper-slide 102 having the wiper-carrier 104, which is attached to crossed plates 106, Fig. 14, slotted to receive the studs 108 of the sliding bar 109, one end of which is connected to the bell crank 110, pivoted to a bracket on the plate 79. If the alignment of the toe does not correspond with the end wiper 91 and wiper-plates, the wiper swings on striking the last, and acts through the levers 114, 110 to shift the wiper-plates. The heel-lasting mechanism is mounted on a sliding carriage carrying the tipping-plate holder, which has trunnions to support the tipping-plate, to the front of which the clasp chain 156 is secured. When the pivoted handle 177, Fig. 14, causes the pin 176 to travel a short distance in a slot in a bar, not shown, the roller 182 of a link moves to the left in the slots 164 and separates their curved portions, and through the springs 165 moves the ends of the plates 160, connected by sliding pins 159 to the chain 156. Further motion of the handle 177 in the same direction causes the studs 162 to operate slotted plates, not shown, and cause the wipers to close on the heel. In a modification, Fig. 20, the stands 73,144 are pivoted, and a shaft 203 operated manually by cranks, shafts, and levers is connected to them, as shown, the links 215 being connected to one of the slotted vertical levers 210, 207 according to whether the stands 73, 144 are to be simultaneously placed in opposite or the same angular positions. The toe and heel lasting devices may be automatically and simultaneously shifted to accommodate them to the ends of lasts having different degrees of crookedness and swing. The slide-bar 109, Fig. 14, supported in a bracket fixed to the plate 79, Fig. 12, has a rack end engaging a pinion through which a shaft 402 can slide ; a shaft 413 is connected in a similar manner to a rack bar carrying a stud to operate the heel-wipers. As the toe-wipers are adjusted, the bar 109 operates the shaft 102, and the toothed wheels 404, 406, 407, 408, and shaft 413, Fig. 33, and the heel-wiper adjusting slide-bar. When it is desired that the swing of the heel and toe devices should be in the same direction, the lever 409 is operated to disengage the train of wheels mentioned, and to engage another set which reverse the direction of the former motion of the shaft 413. The adjustment of the toe-wipers is also effected manually by operating a spring-controlled finger to place a roller in or withdraw it from a slotted arm, Fig. 39, forming part of a pivoted lever 305, having jaws which embrace the flattened end 304 of a stud 300 in the operating-lever 109 and controlled by the resilient crank 301. A similar device is fitted to the heel-lasting mechanism.