Patent GB-190221347-A (GB)
Title: Improvements relating to Machines for Driving Nails Slugs and the like into Boot and Shoe Heels.
Inventor: PRESTON ALBERT FRANCIS
Filed: 1902-10-01
Granted: 1902-12-18
Abstract: 21,347. Preston, A. F. Oct. 1. Nails.-In a machine for making nails and inserting them into boot and shoe heels, the driving-shaft 24 is jourualled in two uprights 22, 23, connected together by a pin 231 and carried by a head 21 on a standard 20. The shaft carries a splined clutch sleeve 28 adapted to couple it to the belt-pulley sleeve 25. The sleeve has an internal spring to press it into action and a cam 30 acted on by a spring-pressed pin 31 to put it out of action. This pin is connected to a rod 33 connected by a chain 34, passing over an idler 35, to a treadle. A carrier or driving-head 37 reciprocates between guides 36 secured to the uprights 23 and having retaining flanges and tongues at the sides. The carrier has an elliptical aperture, to receive a roller on a crank-pin arranged eccentrically on a disc on the driving-shaft, and a recess with inclined walls to receive wedge-shaped jaws 46 with sockets in which cutters 61 of the form shown are held by pins 62. The jaws and the carrier have grooves to receive a wire guide 48 with two apertures for fastener strips b, which are straightened by a pin 69. Pins 50 on the jaws engage apertures in the wire guide. In the down-stroke the jaws are wedged together by the head 37 so as to cut off a nail from the strip and press it into the heel, and in the up-stroke are wedged apart by guides 51 and flanges. A block secured to the upright 23 has an aperture in which slides a screw 58 fixed to and limiting the motion of a wire guide-block. Two pins or spring strips 59 project from the guide block, which has apertures to expose the strips to the action of spring-pressed locking dogs 71 pivoted at 73 and hearing pointed fingers 72. The springs 74 pass through a fixed block and are connected to the pin 231. The dogs are released to adjust the size of the nails by stop-pins 75 working in slots 76 and carried by vertical adjustable screws 77 with milled nuts 78. The fastener strips are wound upon reels 63, one of which may be locked by a brake-pin 84 when it is desired to insert one row only of fasteners, the pin being carried by a slide 81 raised in its socket 80 by a spring 82. A stop 87 is raised at the same time to keep the corresponding dog 71 out of action. The brake is released by a handle 86 and locked by a pin 85 as shown. The work is fed by the under face of a flange 94, the upper face of which stops the jaws 46, on a wheel 92 turning on a stud carried by a bracket 91, the wheel being operated by ratchet teeth 93 and a grooved pawl engaging a fixed stud and forked to embrace a cam on the main shaft. The feedwheel may bear against the upper and the shoulders for arrestmg the cutter jaws fixed to the machine frame. The work support 130 is carried by a standard 128 having a hemispherical socket 120, adjusted by a hand-wheel 123, and loosely connected by a rod 25 with the rod 33. The upper end of the post 124 carries a spindle 127 to receive the extension 128, which rests on disc springs 129 and has a reduced upper end to receive the clinching- head 130 or a last.