Patent GB-525815-A (GB)
Title: Improvements in or relating to heelseat fitting machines
IPC: A43D25/06
Filed: 1938-12-31
Abstract: 525,815. Heelseat fitting machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and HAZELTON, G. Dec. 31, 1938, No. 37964. [Class 17 (i)] Relates to machines of the kind described in Specification 430,758 comprising matrix means supporting the heel end of the sole and presenting a U-shaped opening, a bulging device for bulging a central portion of the end through the opening, a clamp for the marginal portion and a knife movable lengthwise of the sole beneath the matrix to sever a horseshoe shaped marginal portion, the machine being also fitted with heel measuring means of the kind described in Specification 501,447, and consists in the provision of adjustable matrix means, clamp and bulger. Preferably, the adjustment is automatic, so that the dimensions of the heel end tab left correspond to the size of the heel. The slide for the tonguing knife 119, Fig. 1, is formed with rack teeth gearing with a pinion 123 also gearing with a fixed rack. The pinion is reciprocated by a cam roll 127 engaging a barrel cam 129 driven by a one-revolution clutch engaged by a handle 623. On each side of matrix means a sector 137<SP>1</SP>, Fig. 4, is mounted for sliding movement towards its fellow when a treadle is depressed. Each sector carries a slideway member 141' angularly adjustable along an arc-shaped groove 145<SP>1</SP>, a clamping screw 155<SP>1</SP> being provided. The slideway 141<SP>1</SP> guides a slide for a knife 179<SP>1</SP> which cuts a shoulder to fit the corner of the heel breast. The knife is reciprocated by a link 211' pivoted to a link 193<SP>1</SP> pivoted to a slide and a bell-crank lever 197<SP>1</SP> actuated by a link 203<SP>1</SP> from the barrel cam. At each side of the heel H, Fig. 10, a knife 221<SP>1</SP> adjustable along a curved guide 229<SP>1</SP> and reciprocated by a cam-actuated link 269' and bell-crank lever 267<SP>1</SP>, trims the corner of the attaching and breast faces of the heel to fit the shoulder formed by the knife 179<SP>1</SP>. The matrix means comprises side plates 293, Fig. 23, each secured to one of the sectors 137<SP>1</SP> and rear plates 395<SP>1</SP> which slide over the side plates in front of them. Each rear plate is secured to a slide 311 engaging a slideway in a bracket secured to the sector 137 on its side. The bulger device comprises fine work-engaging members on each side, 335, 337, 339, 341, 343, Fig. 18, interconnected for proportionate sliding movement longitudinally of the shoe. The assembly on each side has sliding engagement with a bracket secured to that sector 137<SP>1</SP> on their side, so that they move laterally toward and away from each other with the sectors. The member 335 is supported by springs and the slide 355 supporting the rear members is supported by a pin 375 engaging ears 373. The pin is carried by a lever 377, Fig. 1, actuated by the barrel cam. The' marginal portions at the heel end of the sole are clamped to the matrix plates. On each side a foremost clamping member 395, Fig. 22, is carried by the member 335, a central clamping member 413 is carried by the member 355, and a rear clamping member 421, Fig. 23, is carried by a slide adjustably secured to the slide carrying the rear member of the matrix. The slides 355 may be depressed by a lever 447, Fig. 1, linked to a lever 455 urged clockwise by a spring 467 and pivoted to a lever 461 to which a second treadle rod 465 is pivoted. The lever carrying the rear clamping member is depressed by a spring plunger 437 against a stop 443. The heel is placed on a platform 469, Fig. 14, and measured longitudinally by a slide 483 gearing with a pinion 487 also gearing with an actuator 493 carrying pins 501, all similar to the heel measuring apparatus described in Specification 501,447. The pins 501 are linked to levers 507', Fig. 10, which contact with the sides of the heel when the actuator is moved forwardly. One of the levers moves with an arm 511, Fig. 16, pivoted to a slide 519 guided by a pin 523 carrying a locking bar 533 sliding between ears 531 on a lever 535 pivoted to the bar 519. The lever co-operates with a stop on an ear 537 upstanding from the bracket 317. The pinion 487 is carried by a slide reciprocated by a pin 547, Fig. 3, on a lever 549, 550 moving an extension 551 linked to a lever 557, 559 moving with a sector 563 gearing with a sector 603 actuating an arm 607. This' arm cooperates with a locking member 595 similar to the mechanism 533, 535 provided for the widthwise heel measurement, the member 595 moving to a position determined by the length of the heel. When the arm 607 is stopped by this member, the counter-gauge 577 is positioned accordingly, this having been advanced by a lever 559 integral with the lever 557. An arm 579, angularly adjustable on the lever, is connected to the slide actuating the rear clamps 421. The treadle rod 611 is urged upwards by a spring stronger than the spring 613, which acts in opposition thereto. Depression of the treadle first swings the extension 551 anti-clockwise, swinging the arm 607 away from the member 595 and shifting the counter gauge, rear matrix parts, rear clamping and bulging members all forwardly to their most advanced positions. When the bulger is completely collapsed the extension 551 swings clockwise about the end of the link 555, moving the lever 549, 550 to withdraw the heel measuring devices. The heel is then positioned, and the treadle released. The heel measuring devices advance, positioning the members 535, 595 according to the width and length, respectively, of the heel, when the lever 549,550 comes to rest. The arm 551 then turns clockwise, raising the link 555 and swinging the sector 603 until the arm 607 contacts with the member 595. The contact determines the point at which the counter-gauge, rear bulger, rear clamp and rear matrix plate stop in their rearward movements. The shoe is then positioned and the treadle connected to the rod 465, Fig. 1, depressed. A link 217 closes the matrix plates widthwise to a point determined by the width of the heel, the sectors 137<SP>1</SP> moving inwardly until the screw 545, Fig. 16, contacts with the arm 535. The matrix means, bulgers and clamps are all thus positioned widthwise of the shoe. The descent of the link 217, Fig. 1, being thus stopped, the lever 455 swings, elevating the link 451 which depresses the clamps and bulgers. The clutch is 'then engaged, reciprocating the knives 179<SP>1</SP>, 221<SP>1</SP> to cut shoulders on the sole and trim the breast corners of the heel to correspond. The bulger and clamp are then depressed by power and the knife 119 reciprocated. The machine then comes to a stop, the treadle is released, and the parts of the machine return to starting position. Specifications 306,192, 310,822, and 331,934, [all in Class 17 (i)], also are referred to.