Patent GB-143304-A (GB)
Title: Improvements in or relating to machines for breasting the heels of boot and shoes
IPC: A43D87/00
Filed: 1919-02-18
Abstract: 143,304. Ross, I., and British United Shoe Machinery Co. Feb. 18, 1919. Breasting.-A machine for breasting heels before attachment is provided with means for correctly locating the heel for transfer to breasting position, for securely holding the. heels, during such transfer, and for arranging them at the desired angle in relation to the breasting-knife. The heel feed mechanism is carried on a bed 58 adjustable about a pivot 59 by a screw and slot device 61, 62 to an amount indicated by a pointer 63. The bed is formed with guideways for a feed-slide 65, Figs. 5 and 6, to which is secured a heel-supporting plate 66. The heel is positioned on the plate by three adjustable gauges 68 engaging the curved portion of the top-lift, and by members 71, 72 having upturned ends 73, 74 adapted to engage the breast portion of the toplift. The members 71, 72, which carry cam-rolls 75 in engagement with cam-slots 77 in walls 78, 79 on the underside of the bed 58, are supported on a pin 203 which extends into parallel slots in the walls 78, 79. Springs 80, 81 hold the members frictionally in contact with a member rotatably mounted on the pin 203 and provided with two lugs 83, 84 between which is located a pin 85 fixed on the feed-slide. When the feed-slide advances towards breasting, position, the pin 85 engages the lug 83, and, owing to the frictional engagement, the members 71, 72 are moved with the slide, and the rolls 75 cause the members to be withdrawn from engagement with the heel. When the rolls reach the ends of the slots 77, the lug 83 turns about the pin 203 and permits the pin 85 to continue its forward movement. On the return of the feed-slide, the pin 85 engages the lug 84 and rotates the member until lugs 86 on the inember engage lugs 87 on the members 71, 72, which are then retracted with the slide and restored to normal position. The sides of the heel are gripped by levers 98, 99 pivoted to the ends of levers 90, 91, which have formed on their other ends gear segments 92, 93 engaging a right and left handed adjusting-screw 94. The levers 98, 99 have arms 100, 101 to which are pivoted the forked ends 106, 107 of rods 108, 109, which are pivotally connected to short shafts 112, Fig. 1, rotatably mounted in the ends of arms 114, 115. Fig. 2, of a U-shaped lever 116 pivoted on a shaft 117. The arm 114 carries a spring-pressed plunger 119 the head of which is recessed and normally engaged by the conical end of a stud 122 carried by a cam-lever 123 pivoted on the shaft 117; a roll on the stud 122 travels in a camgroove 125, Fig. 1, in a cam 126 on an horizontal shaft 3, which drives the breasting-knife. In operation, the levers 98, 99 are first closed to grip the heel, and the feed-slide 65 is then pulled along the bed 58 to breasting position; if an obstruction is met, the spring plunger 119 yields and allows the lever 123 to complete its movement. The forward movement of the feed-slide is arrested by the engagement of a roll 130 with a pivoted stop 128, which is supported by a spring plunger 204, while the feed-slide is locked in this position during the breasting operation by the engagement of a projection 137 on a spring-pressed lever 135 with a recess 138 in the slide; the lever 135 is lowered by a reciprocating plunger mounted in the knife slide. The machine is timed so that the heel-clamping arms are opened just before the knife finishes its cutting movement; when the feed-slide returns, the heel and the severed chip drop down separate shoots. A rotatable cutting- block 142, Fig. 5, is supported on the pivot 59 of the bed 58.