Patent GB-767967-A (GB)
Title: Improvements in or relating to heel-attaching machines
IPC: A43D69/04
Filed: 1954-03-26
Abstract: 767,967. Heel attaching machines. BRITISH UNITED SHOE MACHINERY CO., Ltd, and MAWBEY, L. March 25, 1955 [March 26, 1954], No. 8832/54. Class 17 (1). A heel attaching machine has means to insert a plurality of fastenings part way into the seat face of a heel in converging relation, and means to bend the projecting portions of the fastenings so that they penetrate the shoe bottom when the shoe and heel are pressed together. As shown, six nail driving and bending mechanisms are arranged about a guide shaft 1, and each comprises a throat 7 with a nail and driver passage 9 and fastening retaining spring 11. Each throat is slidably mounted in an arcuate guideway 15 on a throat carrier 17 slidable on guide 29. The lower ends of the throats are positioned by means of a member 41 detachably connected to shaft 1 and having grooves which are engaged by pins 39 on guides 29 and so position guides 29 about pivots 34. Carriers 17 are moved up and down by a cam 73 (Fig. 4) acting through 71, 69, 63, 55, 53, 51, 49, gear segment 45, and teeth 43 on the carrier. The nail drivers 77 are moved up and down, in carriers 17, with rock bars 79 and are rotated relatively thereto by engagement of pin 97 in cam groove 99 to engage bevelled faces on the drivers and the nails to arrange the latter so that their bevelled faced face inwardly. The drivers with rock bars 79 are actuated by a cam 120 acting through 121, 119, toothed actuator 113 slidable on shaft 1, 109, 107, 105, 103, and teeth 101 on rock bars 79. The throats are moved along guideways 15, to bend the nails, by means of a cam acting through 143, 139 (Fig. 4) to move actuator 135 up and down, the latter acting through 133, arm 129 with cam groove 127, roll 125, 123, and pivoted lever 25 connected to the throat. In the position of rest passage 9 is aligned with nail feeding passage 145, and in operation throat 7 is moved to align passage 9 and driver 77, driver 77 is moved to push the nail part way out of the throat, the throat and driver are lowered to drive the nail, the driver is withdrawn, the throat 7 moved into contact with the heel and then swung to bend the nail, the heel lowered to remove the nail from the throat, and the throat &c. returned. The heel is supported on a removable plate 153 adjustable heightwise by screw 159 in a holder comprising an open-top box like member 151 with a removable breast gauge plate 161, the angular position of the holder being adjusted by turning a sleeve 173, 175 which moves the holder along arcuate guides 165 on support 167. Spring 207 acts through 195, 193, 191, 187 and slide 183 to press the heel against plate 161. When hand lever 223 is moved rearwardly, from the position shown in Fig. 8, it acts through 225, 227, twin yieldable levers 215, 217, and roll 213 to slide the support 167 along guides 208 in frame 209 until the rear of the heel engages a stop 229 adjusted by screw 239 through 237, 231. Lever 223 is then moved further, against spring 221, until it is locked when bolt 251 engages in hole 259. For loading a heel the lock is released by knob 245, and handle 223 moved forwardly first until support 167 engages stop 261, and then, with lever 215, so that arm 263 engages roll 205, and through 203, 197, 195, 193, 191 moves arm 187 away from slide 183, whereupon spring 265 moves the slide away from plate 161. When handle 223 is released spring 221 returns the handle and lever 215, and spring 207 presses slide 183 into engagement with the heel. The seat face portion of the heel is supported, while the nails are inserted, by plates 267 pivoted on a slide 271 slidable in support 167 and connected to arm 273 of lever 273, 279, 288, roll 281 on arm 279 engaging cam 285, and arm 288 being connected at 289 to slide 291 slidable in frame 209. As support 167 moves rearwardly carrying the heel towards the plates 267, roll 281 rides up cam 285 and permits spring 283 to move the plates towards the heel, arm 288 moves slide 291 to a locking position, and a cam on arm 225, secured to the same shaft as lever 223, acts through roll 305, 301, and 299 to move locking member 295 into engagement with the inclined face 293 to lock slide 291. The locking member 295 is moved away from slide 291 by the cam on arm 225 when lever 223 is moved forwardly. During the insertion and bending of the nails and the withdrawal of the throats the heel is held down by plates 309 (not shown) engaging the seat face, the plates being adjustably spaced apart by move of screw 329 (not shown), and removed just before the shoe and heel engage. In another embodiment the heel is supported on a spring pressed slide, the plates 309 yielding outwardly to permit the heel to be inserted and then closing over the top thereof. The slide is locked against downward movement during nailing by a cam actuated pivoted locking arm through which the lower end of the slide passes. In operation the shoe is placed in the supporting device and the heel in the heel holding device, the heel holding device moved rearwardly to position the heel beneath the nailing device, and the machine started. The heel is then raised for the insertion and bending of the nails, and lowered, and prickers moved to prick the shoe, and the machine stops. A common carrier is then moved by springs to position the heel beneath the shoe, and the machine started a second time, whereupon the shoe is moved downwardly to be joined to the heel. The shoe is then released, and removed by hand, and the common carrier moved to position to receive the next heel. Specifications 580,814, 597,307, 600,832, 729,433 [Group XXV] and 729,434 are referred to.