Patent GB-351386-A (GB)
Title: Improvements in or relating to machines for shaping boot or shoe uppers over lasts
IPC: A43D21/12
Filed: 1929-12-23
Abstract: 351,386. Boot-makingmachines. UNITED SHOE MACHINERY CORPORATION, 205, Lincoln Street, Boston, U.S.A.-(Assignees of Jorgensen, J. C.; Beverly, Massachusetts, U.S.A.) Dec. 23, 1929, No. 39206. Convention date, April 16. [Classes 17 (i) and 89 (iii).] Lasting; nailing.-In a heel seat lasting machine comprising wipers and a gang of fastener-inserting mechanisms operating through openings in the wipers, the fastenings are driven inclined away from the edge of the shoe, the wipers each have an upstanding flange co-operating with means movable with the wiper to form pockets for the fastenings, the wipers have curved d extensions having guiding engagement with each other, and the shoe support is movable about an axis in the heel seat lengthwise of the shoe in response to the pressure of the wipers. As applied to the machine described in Specification 235,286, [Class 17 (i), Boots and shoes, Apparatus for making &c.], a pair of wipers 16, 18, Fig. 7, have extending arms 20, 22 curved about the meeting edge x of the wipers and in sliding engagement with each other. These arms are grooved to engage correspondingly curved tongues 36, 40 in upper and lower members 30, 32, themselves provided with a positioning tongue and groove 44, 46. The members 30, 32 are carried by the cam-operated wiper slide 28. This slide carries a member 76, Fig. 4, provided on each side with racks 78 gearing with segments on levers 82 pivoted on the machine head. The other ends of the levers actuate pinions gearing with adjustable racks 90 on slides 64 bolted to members slotted to engage rolls 72 carried by the wipers, this mechanism closing the wipers over the heel end of the shoe as the wipers are advanced. To adjust the starting position of the wipers the member 76 is movable longitudinally of the slide 28 by a screw 96 rotated by a bevel gear 102, the shank of which is recessed to co-operate with a tongue on a shaft 106 provided with a hand-wheel and a spring for normally urging the tongue out of the way. The inner edge of each wiper has an upstanding flange 114, Fig. 7, formed with grooves 116 each in line with a tack opening 112 in the wiper. A tack block 120, Fig. 2, is bolted to each wiper plate and guides a driver 132 aligned with each groove 116. Convergent tack fingers 124 are pressed inwardly by springs and formed with sloping grooved faces to deflect the tack points inwardly so that they may be driven inwardly inclined from the edge of the shoe bottom. The ends of the drivers are inclined substantially parallel to the heads of the tacks. The drivers are bolted to curved blocks 134, Fig. 1, each connected by a stud and slot to allow of lateral movement with a T-shaped member connected bv a link 142 wich a driveroperating head 146 guided for vertical movements on a fixed rod 148. The head 146 is linked to a lever 152 urged downwardly bv springs 160 and rods 162, the lever being lifted by a cam 156 as described in the prior Specification. To allow the shoe to be self-adjusting under the pressure of the wipers on the two sides the last pin 168, Fig. 11, is carried on a block 172 curved at its lower end about a line longitudinal of and central of the heel seat. The block engages a slot in the heel post 166, the bottom of the slot being curved correspondingly. The heel post is normally centralized by a spring 174 housed in a recess in the lower end of the block and held under compression between discs 176 slidable along the recess and normally engaging lugs 180 secured to the post. A screw 182 in the post engages a slot in the block to limit the tip of the last. Specifications 26698/09 and 191,477, [both in Class 17 (i), Boots and shoes, Apparatus for making &c.], also are referred to.