Patent GB-191415999-A (GB)
Title: Improvements in or relating to Machines for Inserting Fasteners for use in the Manufacture of Boots and Shoes.
IPC: A43D79/00
Filed: 1914-07-04
Granted: 1915-08-04
Abstract: 15,999. British United Shoe Machinery Co., [United Shoe Machinery Co.]. July 4. Heels, machines for.- Relates to a machine for inserting fasteners in the manufacture of boots and shoes, and particularly to a machine for nailing heel seats in which a number of awl gangs and driver gangs are provided to enable the one machine to be used upon a wide range of sizes. The machine described is provided with three gangs of nail-drivers (each of which is intended for use with five different sizes, including half sizes, of shoes) carried respectively by blocks 20, 22, 24, Fig. 6, which are held by spring-pressed plungers engaging a slide 48 with their upper dovetailed faces in alinement so as to be moved, in succession, into engagement with the dovetailed lower end of a plunger 28. This plunger is mounted to reciprocate in a vertical movable awl-operating casing 46, Fig. 7, being actuated through segmental rack gearing 30, 32 and an adjustable link 38 from a cam 42 on a shaft 43; the casing 46 is also vertically reciprocated through connexions with a cam 136 on the shaft 43; the casing 46 is also vertically reciprocated through connexions with a cam 136 on the shaft 43. The awls, in three gangs, are carried in dovetailed plates 66, 68, 70 slidable in arc-shaped guides 71, Fig. 7, from which they are adapted to be transferred by a slide 74, Fig. 5, into a position in the lower part of the casing 46; this slide has a dovetailed connexion with a pusherbar 78, which is actuated through links 82, 84 from a cam 88 on the shaft 43. The nails are delivered to three groups of openings in a single or three-part nail block 100, Fig. 5, which is adapted to slide in ways formed on, or in a plate 109 secured to, the machine frame, to bring the selected set of openings beneath the plunger 28. The shoe is pressed against the underside of the block 100, which is preferably fitted with a pad of leather, wood, or soft metal, so that the heel seat may be laid before the nails are driven. The nail block, awls, and drivers are preferably moved into their proper operative positions by a single device comprising a hand-lever 110, Figs. 5, 6, and 7, which actuates the slide 48 through rack-and-segment gearing 114, 116, the awl plates 66, 68, 70 by means of adjustable pushers 122, 124 carried by holders 118, 120 on the underside of the handlever, and the block 100 through the engagement of a rack on the rear edge of the block with a segmental rack 126 mounted on arms connected to a vertical rock-shaft 112, to which the handlever is secured; the lever is locked in its different positions by a spring plunger 128 on a pivoted finger-piece 130. The nails are delivered to the block 100 by a nail loader 162 carried by a slide 163, which had a rib-and-groove connexion with, and is actuated by, the awl-carrying slide 74. The slide 163 is adapted to receive three loaders 162 of different sizes, a pin-andslot device being provided to ensure that each loader can only be fitted in the slide in its own particular position; the nails are retained in the loader by a spring-pressed plate 170, which is displaced to free the nails by the engagement of a lug 172 with the front edge of the block 100 as the loader moves into nail-delivering position. In nail-receiving position, the loader is supplied with nails from flexible tubes which connect the nail raceways with short fixed tubes 271, Fig. 5, in a plate 272. The nails are fed into the raceways from a nail pot by segmental lifting-plates oscillated by mechanism including a spring- pressed catch, which yields if the plates meet any obstruction and allows them to fall, thereby stirring up the nails. The control of the nails from the raceways to the tubes is effected by separator plates actuated by a common slide, which is oscillated from a cam-groove formed by plates 283, Fig. 7, attached to the casing 46. The nails in the tubes 271. Fig. 5, rest on a plate 284, the holes in which are normally held by a spring 285 out of register with those in the loader 162, but are brought into alinement when, in its movement, the loader strikes the rear end of the plate.