Patent GB-485193-A (GB)
Title: Improvements in or relating to machines for operating upon shoe soles
IPC: A43D43/02
Filed: 1936-10-14
Abstract: 485,193. Channelling and grooving boot - soles. UNITED SHOE MACHINERY CORPORATION. Oct. 14, 1936, No. 27831. Convention date, Oct. 15, 1935. [Class 31 (i)] A machine for performing a cutting operation upon a marginal portion of a boot-sole comprises a frame, a cutting tool, a rotary feed wheel, a rotary edge gauge and a tool-carrying head pivoted in the frame about an axis parallel to the feed wheel axis. The frame comprises a lower part 24 vertically adjustable on a base plate 20 and an upper part 172 detachably secured to the lower part by a clamping bolt 176. The part 172 is adjustable parallel to the feed wheel shaft 86 by a screw 184 with a capstan head 186 and is provided with an arm 196 to which is pivoted at 198 the head 202. The head and frame part 172 can be removed from the frame part 24 as a unit. The feed wheel 14 is mounted in the frame part 24 on the shaft 86 which is driven from a pulley 26 through a clutch 30, 40, shaft 28, gear 78, an idler gear and gear 84. The clutch is engaged by a treadle 74, provided with a latch 77 and operating through levers 66, 50 and a roller 44 carried by an extension 48 of lever 50, the roller bearing against the hub 46 of the pulley 26. The extension 48 is pivoted to the lever 50 at 52 and normally held in line therewith by an adjustable spring 54. The pivot 58 of the lever 50 is adjustable in a slot 61 and the junction of levers 50, 66 is adjustable by teeth 70 to compensate for adjustment of the frame part 24 relative to the base 20. The clutch part 40 is mounted on a hand wheel 36 which may be used to control the drive or as the drive. The feed wheel 14 is provided with spaced elongated teeth 368, Fig. 3, which are obliquely arranged on its periphery and slope downwards at their ends. The feed wheel has secured to it a bevel gear 92 meshing with a bevel gear 112 on the rotary edge guide roll 16 ; the guide roll is pressed upwards by a spring against a stop 132 carried by a block 286 adjustably secured to the channelling knife slide 252. Engagement of the roll 16 with the channelling knife 10 is thus prevented. The roll 16 is mounted on a slide 106 urged to the left, Figs. 1 and 3, by a spring 154 which surrounds a screwed rod 144 having a capstan head 146 which bears against a lug 152 on the frame to limit the movement of the roll to the left. Movement of the feed roll 14 to the left under the action of a spring 100 is limited by the gear wheel 84 bearing against the head 146. The feed wheel 14 and guide roll 16 can be moved to the right by a treadle 164 which operates a bell-crank 158, 162 engaging a pin 142 on the slide 106. The head 202 is pressed downwards by an adjustable spring 216 acting through a lever 208 and a strut 218 ; downward movement is limited by a stop screw 224. The height of the tools 10, 12 is determined by a presser foot 18 adjustably secured in a horizontal guideway in a block 228 which is adjustable vertically by a screw 234. The head can be raised by a treadle 250 operating a lever 242 which engages a depending lug on the head. The grooving knife 12, Fig. 13, is secured to the head 342 of' bolt 336 clamped by a nut 340 in a block 330 which is slidable in an arcuate guidewav in a block 326. The latter is slidable on a guideway 324 of a block 314 which is itself slidable in a guideway 312, Fig. 4, of a vertical slide 294. The slide 294 is mounted in the head 202 and pressed downwards by a spring 310, a collar 302 engaging the lower face of a slot 304. To discontinue the groove the slide 294 is raised so that the collar 302 engages the upper face of the slot 304 by a treadle 362 which, through a treadle rod 360 passing through the pivot 198 of the head, rocks a lever 356 having ears 364 to engage a pin 366 on the slide. A guide 354 is provided for the material removed by the knife 12. The channelling knife 10, Fig. 3, is clamped in a block 268 adjustable in a horizontal guideway in a block 264. The latter is slidable in an arcuate guideway in the end of a slide 252 which is pressed downwards by a spring 260, its movement being limited by a collar 258 on a screw 254. An adjustable stop is provided on the block 268 to ensure correct replacement of the knife.