Patent GB-466753-A (GB)
Title: Improvements in or relating to the lasting of boots or shoes and to the laying of soles thereon
IPC: A43D113/00
Filed: 1935-11-30
Abstract: 466,753. Boot-making machines. UNITED SHOE MACHINERY CORPORATION. Nov. 30, 1935, No. 33215. Convention date, Dec. 3, 1934. [Class 17 (i)] A machine for lasting an upper with an outwardly directed marginal flange, such as a welt, and laying the outsole thereon, has fore part and rear part wipers which together encircle the whole of the last and form a support for the flange against the solelaying pressure. The wipers have thin wiping edges which enter the crease and oblique faces to limit their inward movement over the shoe bottom, these faces, in the case of the toe wipers, contacting with the shoe upper, and in the case of the rear wipers, with a complementary surface of a heel band. The rear wipers are actuated first, and serve as a hold-down during the up-wiping of the fore end. The sole-laying presser swings from out-of-the way position to operative position, and is provided with adjusting means so that its position at the limit of its swing is appropriate for the size of shoe being operated on. The toe wipers 28, Fig. 2, extend to the ball of the shoe, and are operated by treadle for the up-wipe and by hand for the over-wipe. They have the section shown in Fig. 8. The rear-end wipers 30 reach substantially to the toe wipers, one set of wipers being used for three consecutive half sizes. The heel band 36, Fig. 10, is shaped at its upper edge to form a stop for the wipers at their innermost position. Its free ends are adjustable by screws 80, Fig. 13, threaded into a plate 82 and locked by thumbnuts 96. The band is retained in position by clips 90 and lugs 92. The band is carried by a slide 50, Fig. 10, urged rearwardly by a spring 70 to a limit determined by an adjustable stop 66. The shoe is bedded into the heel band by a handwheel rotating a pinion gearing with a rack secured to the heel post 34. The slide 50 may by adjusted laterally of the shoe by screws 64, Fig. 13, abutting against the slide. The solepressing form 102, Fig. 2, has pins 162 entering holes in a plate 103 and notched to engage spring-pressed pins 164, which are retracted to allow the form to be changed for others of different size. The plate 103 is loosely pivoted to the end of a slide 104 adjustable in a bracket 106 by a thumb screw 140, a pointer 144 on the slide co-operating with a scale on the bracket to guide the adjustment for size of shoe. The form is adjusted angularly by a screw 148, the adjustment being indicated by a pointer 160 co-operating with a scale secured to the slide. The bracket 106 is rotatable about a rod 108, and is urged to inoperative position by a spring 114. A pin 112 in the rod co-operates with a slot 110, Fig. 6, in the bracket, so that the form descends as it swings to operative position. A thumbscrew 126, Fig. 3, co-operates with a stop 124 to limit the swing of the form to operative position, a spring-pressed pad 132 providing friction to hold the screw in adjusted position. A collar 138 on the screw indicates the size adjustment on a scale 136. The rod 108 is depressed, to produce the sole-laying pressure, by a treadle 116, Fig: 6, the treadle having a locking bar 120 toothed to engage a pawl 121. A knee lever 122 releases the pawl at the end of the operation, a spring 115 then raising the treadle and form, which latter is swung to out-of-theway position by the spring 114.