Patent GB-931303-A (GB)
Title: Shoe pressing machine
Inventor: MILLER WILLIAM J
IPC: A43D95/02
Filed: 1961-03-22
Abstract: 931,303. Shoe pressing machines. WESTERN SUPPLIES CO. March 22, 1961, No. 10430/61. Class 17 (1). An apparatus for ironing the lasted margin of a shoe upper comprises heated sole-wiping and heel ironing mechanisms, heel holding means adjustable to one of a plurality of fixed positions, vertically movable sole holding means 163, the sole wiping and heel ironing operations being effected in timed sequence. The wiping member 192 consists in two wiping blocks pivotally mounted at 193 in the frame of the apparatus by the arms 195. Each wiping block consists in three sections, blocks 220 and 221 being spring-mounted on a base-block 194. Heating elements 369, 370 are included in the wiping blocks. An arm 258 is attached to each block 194 at its lower forward surface and at an angle to the block 194 so that when the wiping blocks are mounted in the frame the said arms 258 will be generally vertical. The arms 258 curve inwardly at 259 and engage in a roller cam device 265, the arm of which is attached to an elbow-shaped arm 282. The horizontal portion 284 of the arm 282 is welded into a bifurcated member 291 of which 293 is one of the forks. The bifurcated member is attached at its base to a piston 320 acting in the cylinder 325 and is pivoted at its upper end on an arm 300. The arm 300 extends vertically upwards from the member 291 to a point slightly above the wiping mechanism 192 at which point a block 302 is welded to it. A second block 305 is pivotally mounted on the block 302 by the ears 303, the block 305 being slightly curved to conform to the shape of the heel section of the shoe last. Heating elements are incorporated in block 302 which together with the block 305 comprises the heel ironing member. The wiping member and heel ironing member are moved relative to each other by a rotatable screw passing through a threaded hole 310 in the arm 300, the end of the screw being attached to an S-shaped member 288 which is welded to the arm 282. The last supporting the upper S is held on the wiping and heel ironing members by pneumatic and mechanical clamping devices, respectively. The pneumatic device consists in a resilient pad 191 indirectly attached to a piston 170 moving in a cylinder 162. The mechanical clamping device consists in an adjusting screw 90 passing through a threaded casting 85, the casting being attached to a plate 79, and the lower end of the screw bears on a cam 130. The said cam possesses a plurality of pairs of parallel faces, the distance between the various pairs of faces varying with each pair. The cam is mounted in slots in the ears of the casting 113 so that it may be freely rotatable or it may be clamped with a face bearing up against the upper face of the casting. A bar 110 having a presser member 155 pivotally mounted at its lower end is attached to the base of the casting 113 and is rotationally and laterally confined by a pin 140 moving in a hollow tube 103 and a spring which is attached to the pin 140 at its lower end and to a pin 145 at its upper end. Thus the height of the presser member 155 above the heel ironing member is governed by the adjusting screw 90 and the pairs of faces presented to the lower end of the screw 90 and the upper face of the casting 113. Depressing the foot pedal 354 causes the valve 342 to allow air from a compressed air supply to operate the pistons 170, 320. As the piston 170 has the shorter distance to travel the last assembly is clamped to the wiper assembly before the movement of the piston 320 operates the wiping motion through the agency of the roller cam device 265 and the heel ironing operation. After a predetermined heating time the pedal 354 is depressed a second time which causes the valve 342 to cut off the air supply and the pistons retract placing the mechanism of the apparatus in readiness for another shoe ironing operation.