Patent GB-1079611-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
Inventor: BARTON GEORGE CLIFFORD
IPC: A43D21/00
Filed: 1963-05-04
Abstract: 1,079,611. Lasting machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. May 1, 1964 [May 4, 1963], No. 17707/63. Heading A3B. A shoe upper conforming machine includes a plurality of flexible non-elastic bands arranged heightwise and at opposite sides of the shoe in the waist region and which engage the sides of the shoe and which wrap around marginal portions of the upper to lay the upper against the shoe bottom. Two embodiments are described. In the first embodiment (Figs. 1, 2, 3) which is a waist lasting machine the bands 112 are mounted in carriers 106, one at each side of the shoe. Each carrier 106 has a plurality of plates 110 with pulleys 122 around which the bands 112 pass, a rib on each band guiding the band over the pulleys and the ends of the bands are attached to springs 118 on the plates 110. The lower ends of the bands are attached to springs 120 mounted on a bracket 121 carried by levers 150 pivoted to the machine frame 102 at 143. The plates 110 on one carrier are offset from the plates on the other carrier and the bands are reduced in thickness at their top ends so that the plates 110 may interleave. Fingers 124 mounted on each carrier 106 press the bands 112 against the upper in the region of the featherline of the shoe. Each carrier 106 can be moved towards the shoe and can be swung about the featherline of the shoe to press the marginal portions of the upper against the shoe bottom. Each carrier 106 is pivoted at 108 to a link 140 pivoted to the machine frame at 142. To move the left hand bands towards the shoe a piston rod 162 of cylinder D moves an arm 164 of a three armed lever and links 170, 172, both pivoted to a second arm 168 of the lever, move the link 140 (which carries the carrier 106) and the lever 150 (which carries the lower end of the bands) respectively towards the shoe. A link 176 connected to the third arm 174 operates similar linkages on the right hand side of the machine. To tilt the right hand carrier (to the position shown in dotted lines Fig. 1) a pison rod 188 of a cylinder E moves an arm 190 of a three armed lever, one arm 192 of which is pivoted to a link 147 which is pivoted at its upper end to the carrier 106 and which swings the carrier about the pivot 108. A link 176 operates similar linkages on the left hand side of the machine. The shoe is mounted on a support 206 carried by a jack 100. The jack 100 consists of a frame 208 which is pivoted at 216 to a cylinder A which is movable heightwise on a fixed piston rod 212. The frame 208 is movable from a loading position (shown dotted Fig. 3) to an operative position by a piston and cylinder F. The heightwise position of the jack is locked by a cylinder B which separates two plates 234, 236 and causes them to bind on the piston rod 212. The last L (Fig. 2) is supported on a block 276 which can tilt on a plate 272 attached to the upper end of the jack and can be locked in position by a toothed locking pawl 320 operated by a cylinder H. Arms 282 on the block 276 carry a block 310, whose position along the arms can be adjusted and which has a spring loaded rod 294 passing therethrough. The rod 294 carries a toe pad 284 and is locked in position by a cylinder G. The shoe is positioned heightwise by an arm 328 which is moved into operative position by a cylinder C, bell crank 340 and toggle link 338. The arm carries an extension 332 which operates a valve PV7. The machine has a pneumatic control circuit which operates as follows:-the operator places a shoe on the shoe support and moves the jack towards the machine. Cylinder G then locks the toe pad and cylinder F moves the jack to its vertical position. Cylinder A then moves the jack heightwise until the joint portion of the shoe contacts the arm 328. Continued heightwise movement of the jack causes the shoe support 220 to tilt until the heel of the shoe contacts the extension 332 to operate valve PV7 which stops the jack, operates cylinder B to lock the jack and operates cylinder H to lock the angular position of the shoe support. The arm 328 then moves to its inoperative position, the position of the shoe being fixed. Cylinder D is then operated to move the bands towards the shoe and cylinder E is operated to tilt the carrier about the featherline of the shoe, the fingers 124 pressing the bands against the upper. The various parts then return to their original positions. In the second embodiment (Figs. 8, 10) the forepart and waist lasting machine described in Specification No. 1,010,149 is modified by replacing the side clamps and waist wipers by the device shown in Fig. 8. The housing 14 is attached to the machine frame and contains a fixed piston rod 22 on which a cylinder block 25 is movable. The cylinder block 25 has an extension 28 which carries a bracket 32 on which a clamping pad 4 and the upper ends of the bands 8 are mounted. The lower end of the bands 8 are attached to springs 60 secured to the cylinder block 25. The cylinder block contains a piston rod 38 on which are attached wiper fingers 46 which carry pivotally mounted wiper pads 6 having pulleys 56. The wiper fingers are urged upwards by springs 50. A piston 43 in the same cylinder as the piston rod 38 moves a locking plate 51 which has a tapered bore 53 which binds on the piston rod 22. In operation fluid pressure is supplied to the upper cylinder in the block 25 which moves the bands towards the shoe and clamps the pad against the side of the shoe. Fluid pressure is then supplied to the lower cylinder which locks the block 25 on the piston rod 22 and moves the wiper fingers towards the shoe. As the wiper pads 6 engage the featherline of the shoe they tilt to the position shown in Fig. 10 to lay the margin of the upper against the shoe bottom. Again the wiper fingers on opposite sides of the shoe are offset and the bands are reduced in thickness so that the wiper fingers may interleave.