Patent GB-291144-A (GB)
Title: Improvements in or relating to means for use in the formation or application of shaped binders for the ends of boots and shoes
IPC: A43D9/00
Filed: 1927-02-24
Abstract: 291,144. British 'United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Feb. 24, 1927. Lasting. - Relates to the application of shaped binders to the ends of boots and shoes and particularly to end-lasting machines having means for forming the binder and applying it about the end of the lasted shoe. A carrier is provided for manually presenting a binder to the machine, positioning means ensuring a proper transfer and proper reception of the binder by the carrier. The wipers are combined with means for preventing the angled ends of the binder from pressing unduly upon the over-wiped upper, either by relaxing the wiper pressure before driving the binder, or by the provision of a wiper construction wherein the binder and its applying means slide over the outer face of the wipers in the applying of the binder. In application, the binder is moved from a position where it is completely masked by the wipers longitudinally toward the shoe with an increasing component of inward swing at its ends. The toe wiper head comprises a plate 16, Fig. 3, fast on a cylindrical member 18, Fig. 2, extending longitudinally of the shoe and adjustable in a bearing 20 for lateral tip of the wipers. The bearing 20 may be raised by a treadle for up-wipe. A wiper carrier 22, slidable lengthwise of the shoe, is guided along the plate 16 by retaining members 24. A cover-plate 26 is secured to the carrier, and the latter is recessed to receive gear segments 28 carrying wipers 30 and operated by gear sectors 32. moving with sectors 34 gearing with rack-bars 36 pressed rearwardly by springs 44. These springs are adjustable by hollow screws 46, additional screwed members 56 being provided to allow lost motion to compensate for the additional movement of that wiper which is 'on the inner side of the shoe, and for varying the comparative pressure at the sides and at the end of the toe respectively. The wipers are advanced, as usual, by a hand-lever, which lever is provided with a manually-controlled brake to hold the wipers against retractive movement when desired. Plates 58, Fig. 4, secured to the wipers, limit the over-wipe and provide a slideway for binder applying plates 60. The inner end of each plate 60 is pivoted to a curved slide 84, Fig. 6, and the outer end to an oppositelycurved slide 82. These slides'have correspondingly curved guideways, and are urged to retain the plates in retracted position by springs. The plates have proejctions 90, by which they are advanced, rack-bars 96 gearing with pinions 98, Fig. 2, gearing with rack-bars 100 pivoted to an equalizer-bar connected by a link with a handlever. The curved guides 82, 84 impart an increasing component of inward swing to the plates 60 as the binder is applied. The binder carrier has a frame 110, Fig. 13, provided with projecting lugs 122, Fig. 14, having sloping faces formed to correspond with complementary wedge blocks on the cover-plate of the wiper carrier, to position the carrier for delivery of the binder. Shoulders 124 on the lugs position the carrier laterally. The binder is delivered from the carrier by a slide 126, Fig. 13, the front end portion of which carries a second slide 128, Fig. 16, urged forwardly by a spring 138. The slide 126 is notched to receive the binder a, the binder being gripped in the notch by a spring jaw 132 pivoted to the slide 128. The slide 126 is normally retracted by a spring 150 and rack and pinion mechanism. To deliver the binder, the operator pushes on a knob 154, the binder ends passing retaining pins 156, Fig. 6, substantially as described in Specification 212,296. When a stop 164, Fig. 13, carried by a third slide 160, contacts with an abutment 166, the slide 126 moves forward clear of the jaw 132. The binder-forming mechanism is similar to that described in Specification 212,296, the wire being straightened and fed to a guideway 182, Fig. 9, where it is cut off and bent by slides 186 co-operating with an anvil plate 184. The binder carrier is positioned to receive the binder with the aid of pins on the forming mechanism engaging holes 198, Fig. 14, in the lugs 122'. To transfer the binder, the anvil plate 184 is depressed and an ejector 216, Fig. 9, operated by a slide 220. This mechanism is put into .operation by a one-revolution clutch comprising .a member 230, Fig. 12, fast on a cam shaft 196, and a continuously rotating member 232 formed with recesses to co-operate with a clutch pin 242 .normally held in the position shown by a stop 246. The carrier, as it is pressed into position to receive a binder, presses a plunger 262, Fig. 10, inwardly, turning a pinion 264 gearing with a rack slide carrying a hook 272, moving a lever 252 linked to the stop 246, and thus clutching the cam shaft 196 to the part 232. The binder forming and ejecting mechanism is thus operated. Just before one rotation of the .cam shaft 196, a cam 282 releases the hook 272 and allows a spring 254 to return the stop 246 to normal position. The wire straightening and feeding devices are driven by another clutch controlled by a link 292 connected to a lever 260 having an arm 296 operated by a cam 298 on the shaft 196. Just before this shaft comes to rest the link 292 is operated, a driven disc 300 having a recess to accommodate a roll 302 to free this second clutch after one revolution of the disc. To ease the pressure of the wipers as the binder is being applied, a plunger 310, Fig. 19, operated by a handle 316 mounted on a holder 308 carried by the wiper head, abuts against the hold-down 6. Adjusting nuts on the plunger and a stop 322 for the handle pre-determine the effect produced, which is mainly a slight upward movement of the wiper head. Instead of this mechanism, the wipers may be modified, the plates underlying them being formed with projections 58<b>, Fig. 20, which guard the upper from injury by the ends of the binder. In this case, the projections 58<b> serve as the up-wiping and over-wiping members for that part of the upper margin extending to the insole lip, the wipers 30 performing the remainder of the wiping operation. Specifications 22630/08, 25608/09, 118,288, 128,573, 141,709 and 142,931 also are referred to.