Patent GB-396710-A (GB)
Title: Improvements in or relating to machines for operating upon soles of shoes
IPC: A43D43/02
Filed: 1932-02-06
Abstract: 396,710. Boot-making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., Union Works, Belgrave Road, Leicester.-(United Shoe Machinery Corporation; Paterson, New Jersey, U.S.A.) Feb. 6, 1932, No. 3568. [Class 17 (i).] Channelling; trimming ;laying. -A rounding and channelling machine, especially for use by shoe repairers, has an attachment for insole lip turning and channel flap laying with belt-tightening means for driving the same when required; alternative gauges for welted and McKay shoes, interconnected so that when one gauge is in the operative position the other is out of the way ; a feed member and a presser foot both engaging the sole margin adjacent the upper, the foot being offset from the presser ; and a yieldably-mounted sticker member comprising two spaced points for engaging material being trimmed away from the sole to hold the work against the thrust of the channelling knife. As applied to the machine described in Specification 3497*/96, [Class 17, Boots &c.], a four-motion feed-plate 10, a sole-supporting antifriction roll 12, an oscillating rounding knife 16, and a channelling knife 18 are all arranged substantially as described in the prior Specification. A presser foot 14 engages the sole margin adjacent the upper in advance of the feed plate in the direction of work feed, this foot having a rounded end shaped to enter the crease and being fixed by screws 52 engaging slots, to enable the foot to be adjusted towards or from the work. A rock shait 24 mounted in the upper 'part of the feed plate carries alternative gauges 20, 22 at right-angles, for welted and McKay or like shoes respectively. The welt gauge is positioned to be swung under the feed plate, and is slotted for the passage of the trimming knife. The inner end or the gauge is also slotted, to allow adjustment. The gauge 22 comprises a roll shaped to the contour of the upper and rotatably carried by a bent arm slotted at its pivoted end for adjustment. A disc with two notches 38 moves with the gauges, and co-operates with a latch 36 having a finger-piece 46 backed by a spring to hold the gauges in adjusted position, with either one at the operative position and the other out of the way. An alternative welt gauge, Fig. 5, is offset to clear the knife 16 and slotted in line with a sticker. The sticker comprises two spacer points engaging the chip being severed from the sole to support the sole against the thrust of the channelling knife, the shank 30 of the sticker being integral with an arc-shaped member 58 slidable on a rib integral with the clamp for the knife 16 and urged toward the work by a spring 72. The machine is provided with an attachment comprising a disc 78 for channel opening and a fluted roll 80 for channel flap laying, both on a shaft driven by a belt 84. The driving pulley 86 for this belt rotates with a coaxial pulley 88 driven by a second belt 96. To slacken this belt when the auxiliary tools are not in use, the pulleys are carried by one end of a bell-crank lever 92, the other end of which is slotted to engage a pin on a handle 102 which, when vertically above its pivot, holds the pulleys in a position in which the lower belt is slack. The lever carries a finger 114 which engages the belt to prevent " crawling." In a modification, the bell-crank lever is arranged to slacken both belts. A spring 108 maintains the handle 102 in either its upper or lower position.