Patent GB-1004117-A (GB)
Title: Improvements in or relating to heel attaching machines
IPC: A43D79/00
Filed: 1962-06-20
Abstract: 1,004,117. Heel attaching machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. June 20, 1962 [June 22, 1961], No. 23664/62. Heading A3B. A heel attaching machine comprises a carrier 68 mounted for to and fro movement and arranged to accommodate in spaced apart side by side relationship a heel lift 20 and a top lift 22 for attachment to a shoe, the carrier having a back gauge 158 to be engaged by the rear of the top lift, two independently yieldably centralizing gauges 152, 188 to engage rear lateral portions of the lifts, and a yieldably mounted breast abutment 182 to align the lifts, the abutment clamping the top lift against the back gauge in a widthwise position determined by the centralizing gauges and clamping the heel lift against the other centralizing gauge, means being provided to cause first the heel lift, and then the top lift, to be brought into widthwise registration with means for attaching them to a shoe. The machine comprises a nailing die 36 held in an operative position in a bracket 30 resting on rods 28 secured to the main frame 26 by a retaining plate 38. Drivers 48 secured to a drive head carried by a cross head 40 slide in nail receiving passages 50 in the die 36. When a loader block is in position over the nailing die, a screw 66 mounted on the loader block arm 64 engages part of the main frame 26, causing a nail retaining shutter to be released and the nails are delivered to the passages 50. The carrier 68 supported by a guide rod 80 and a roller 112 for rectilinear reciprocation at right angles to the vertical median plane 116 of the die 36 comprises a top lift holder unit 68alpha and a heel lift holder unit 68b secured to a top plate 70 and which are presented successively to a heel attaching station 118. The plate 70 has a boss portion 74 slidably mounted on the fixed guide 80. The shoe is supported by a jack 120. The top lift holder 68alpha comprises a pair of forwardly extending guide bars 146 having guide ways 150 for slidingly receiving a centralizing gauge 152 which engages the rear margin of the top lift 22 and is urged forward by compression springs 154, forward movement being limited by engagement with a back gauge 158 which may be set in six different positions. The heel holder unit 68b has a centralizing gauge 188 arranged over the rear portion of a U-shaped opening 186 and constantly urged forward by springs 194. The stem of a T-shaped breast abutment 182 with a heel lift and top lift engaging faces slides in a rectilinear guide way 178 on the plate 70 and is constantly urged forward by a spring 184. Thus the breast faces of the heel and top lifts will be in vertical alignment when attached to the shoe. The heel lift and top lift are placed respectively in their holders and the carrier is moved to its dash-line position (Fig. 4) in which a face 222 of the boss portion 74 engages a bumper ring 100, and the nails are delivered to the passages 50. A gob of cement 144 is dropped on the upper face of the top lift 22 from a cement pot 226. The heel lift holder is then moved into position over the nailing die, the position controlled by a stop screw 210, and the crosshead 40 is raised so the nails are driven into the heel 20. The carrier 68 is then moved to a position where the top lift holder unit is over the nailing die (dashdot position, Fig. 4) the position controlled by a collar 102 on the guide rods 80 which engages a face 220 of the boss portion 74. The shoe and the heel 20 is forced against the upper face of the top lift 22 which becomes adhesively attached. The work is then removed from the machine and a fresh heel lift and top lift placed in the holder units, the loader block is swung clockwise and the carrier moves back to its dash line position. The machine is provided with power assisted mechanism using air valves 238, 264, 280 so that the whole cycle works automatically by movement of the loader block 60. Specification 803,330 is referred to.