Patent GB-276403-A (GB)
Title: Improvements in or relating to heel attaching apparatus
IPC: A43D79/00
Filed: 1926-04-24
Abstract: 276,403. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). April 24, 1926. Heels, machines for.-Relates to machines for use in attaching a heel to a shoe by a fastener inserted into the heel-from the inside of the shoe -while the shoe is on a last, and particularly to improvements in the machine described in Specification 186,376. The tools are driven by flexible driving mechanism including a rigid rotating shaft pivoted so that it may be swung transversely of its axis. Out of the way supports, adjustable in three mutually perpendicular planes, are provided for the drill and driver when not in use. The tread rest is cantable, and engages both sole and heel. The clamping member engaging the top of the last is operated by links bent to have, at each side of the last, portions off-set from the line of pull. The tread support 14, Fig. 1, has ears 23 carrying a pivot pin 21 having a flat lower face engaged by a spring 26 seated in a vertically .adjustable post 24. The rear of the tread support abuts on a vertically adjustable rod 28 urged upwardly by a spring 32 in a second post 30. A support 36 is provided for the curved rear part of a high wooden heel. Alternatively, for low heels, an adjustable breast abutment 38 is provided. The last clamp 16 is mounted on offset links 42 operated by a treadle. An electric motor 22 drives trains of gearing rotating the drill and driver. The drive to the drill comprises a pinion on the armature shaft gearing with a spur wheel 76, Fig. 3, driving a shaft 62 having a bevel pinion 152 at its end. This shaft is journaled in a bearing collar 71 carried by a head 66. A bearing 68 is clamped to this sleeve by a binding screw 69 and braced by an abutment 72. Within this bearing a sleeve 151 oscillates within limits determined by a stop screw 155 engaging a flat on the sleeve. This sleeve forms a bearing for the outer end of the shaft 62, and, also, carries a a housing 148 in which is a cross shaft 150 on which rotates a bevel wheel 154 gearing, with the bevel wheel 152. On the cross shaft 150 is pivoted an oil reservoir 160 which carries a bearing for a drill driving shaft 56 driven, by a pinion 156 gearing with the wheel 154. A stuffing-box 162 prevents leakage of oil along the shaft 56; and a felt pad 176 surrounds the slot in the reservoir 160 provided to give clearance for the sleeve 151. The shaft 56 carries a key 84 engaging a slot in a sleeve 58 providing a telescopic joint. The key is guarded by sleeves 88. A second universal joint connects the sleeve 58 with a shaft 92 journaled in a handle 94, a thrust ball-bearing 108 being provided. A bush 116 partially surrounds the drill 18 and forms a stop to limit the drilling. The bush is secured in the handle by screws 120. A hook 126 is provided on the handle to engage an adjustable stud and support the drill when in out-of-the-way position. The fastener inserting tool is driven by bevel gearing 204, a universal joint 192, and a telescopic connection similar to that of the drill guarded by rotating sleeves 205 and a fixed shield 206. It has an out-of-the-way support 210 adjustable similarly to that for the drill, horizontal, vertical, and swinging adjustments being made possible by three supporting rods 208, 216, 222 and intermediate brackets. A modified tread support comprises a plate 250, Fig. 8, pivoted at 252 to the head of a screw-threaded post adjusted vertically by a hand wheel 262 and looked in adjusted position by a thumb screw 264. The tread support is urged counterclockwise by a spring 266, an adjustable stop being provided on the other side of the pivot. A sole support 274 is urged upwardly by an adjustable spring 280. A heel rest 284 is adjustable vertically and longitudinally. To facilitate adjustment of the tread support, a latch is provided by which the clamp 270 can be held in a definite depressed position.