Patent GB-748651-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1953-04-15
Abstract: 748,651. Lasting uppers; stapling. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). April 14, 1954 [April 15, 1953], No. 10238/53. Addition to 692,126. Class 17 (1). In the shoe upper conforming machine described in the parent Specification, the holddown members which engage the toe binder are improved in various details. (1) Two holddown members 64 are each associated with separate positioning means which by engagement with the shoe determine the heightwise position of the associated member independently of the other member. (2) Each holddown member 64 is fixed to a separate slide 72 slidable in a separate swinging block 76 which is swung downwardly by spring means 106 at a predetermined time in the cycle until a finger 90 on the block engages the shoe bottom yieldingly, other spring means 82 thereafter moving the slide relatively to the block and widthwise of the shoe until the hold-down member engages the shoe upper yieldingly. (3) Each hold-down member 64 is positioned heightwise of the shoe by the engagement with the shoe of a separate associated positioning means, and if the shoe is moved away from the bottom engaging device by the toe wipers the holddown member may move heightwise of the shoe. The shoe button engaging devices 4, 2 positioning plate 6, clamping member 8, wipers 10, grippers 14 for the binder, and stapling units 16 &c. are substantially similar to those described in the parent Specification. Blocks 76 are secured to rods 88 pivotally mounted on studs 18 on which the stapling units 16 are mounted, so that block 76 and members 64 may be swung upwardly and downwardly independently of the stapling units, being guided by the engagement of portions of fingers 90 in slots in the anvils 20. Each spring 106 presses a plunger 104 upwardly in a bore in link 98, pivoted to block 76, against a pin 102 fixed to the machine casing and engaged in a slot 100 in the link. Flexible cables secured to cover plate 110 on the wiper carrier 12 extend through guides 112 and are adjustably connected by screws 114 and slots 118 to links 116 pivoted to studs 30 and to bars 120 pivotally connected to blocks 76. In the initial position, shown in Fig 1, wiper carrier 12 in its lowermost position acts through cables 108 to hold members 64 in their retracted positions widthwise and heightwise of the shoe against the resistance of springs 82, 106, upward movement being limited by engagement of pins 102 with the ends of slots 100. When the carrier 12 is raised to wipe the upper heightwise of the last, cables 108 are relaxed, permitting spring 106 to swing blocks 76 downwardly until fingers 90 engage the insole, and springs 82 move slides 72 inwardly to carry members 64 into engagement with the upstanding margin of the upper adjacent the rib of the insole. The ports are so arranged and springs 82, 106 of such strengths that downward movement of the hold-down is completed prior to completion of inward movement. When the stapling units are moved outwardly to seat the anvils 20 against the rib of the insole, blocks 76 and fingers 90 move with them since rods 88 are connected to studs 18, but members 64 remain in engagement with the upper by action of springs 82. If the shoe is depressed by the wipers, springs 106 maintain fingers 90 in contact with the insole. Specification 610,861 also is referred to.