Patent GB-191120624-A (GB)
Title: Improvements in or relating to Eyeletting or Analogous Machines.
Inventor: BOULT ALFRED JULIUS
IPC: A43D100/00
Filed: 1911-09-18
Granted: 1912-09-12
Abstract: 20,624. Boult, A. J., [United Shoe Machinery Co.]. Sept. 18. Setting eyelets etc.; setting-mechanism.-In a machine of the type described in Specification 20,754/02 for setting eyelets &c. in leather &c., a feed-frame 14, Figs. 1 and 3, carries oppositely-disposed setting-dies 12 arranged behind punches 10, and an anvil plate 16 between the dies. Each punch 10, Fig. 4, has a lug 69 apertured to receive an horizontal spindle 70 rigidly mounted in a slide 71, which is carried by a block 72 pivoted at the end of a punch-actuating lever 73 and is adjusted by a screw 74 to vary the pressure of the punch. Each setting- tool 12 is provided with a central spindle 13 and is similarly adjustably mounted on an actuating-lever 83. The tools 10, 12 may be taken out of the frame 14 and replaced by others. The lever 83 of the upper setting-tool is pivoted on a spindle 55 passing through a U-shaped frame 49 and has gear teeth meshing with corresponding teeth on the lower set lever 83, which has pivoted thereto an arm 86 carrying a cam roll 87 actuated by a cam 88. A stiff compression spring is placed between the arm 86 and the lever 83 to allow a yielding movement if the dies are obstructed. The lower punch lever 73 meshing with the upper punch lever is actuated similarly without a compression spring from a separate cam. The feed-frame 14 is journaled at 44 in a bell-crank lever 45, actuated by a cam to move the frame forwards, carrying the setting-tools 12 provided with eyelets over holes punched in the work by the punches 10. Work-feeding mechanism.-When the eyelets are set, the feed-frame 14 is first moved transversely to feed the work by means of the setting- tools and then backwards diagonally to return the punches to their original position. The work is held by springs 18, Fig. 3, against opposite sides of a guide-plate 20, over which it is drawn when fed and on which it is located against edge gauges 22 on the plate. The plate 20 is shifted to increase the spread of the eyelets by a lever connected by a link 24 to a rack 26 and pinion 25. The link< .>24 may be actuated automatically to decrease the spread as described in the above-mentioned Specification. The frame 14 is moved transversely through links 50, 51 connected to a feed - cam lever detachably to allow the setting-tools to be changed. Mechanism for regulating the amount of feed may be provided of similar type to that described in the above-mentioned Specification. Eyelets, feeding. -The eyelets are delivered from a hopper 110 by raceways 15 located behind the setting-tools to give an unobstructed view of the work, an opening being provided in the side of each raceway, Fig. 4, from which the eyelets are picked off by the spindles 13 of the setting-tools. The eyelets are agitated in the hopper by a brush on a spindle 111 carrying a lugged disk 112 actuated by a worm-wheel 118 driven from the main shaft bv a belt and worm shaft. The raceways 15 are carried by a bracket held by a spring in its normal position, which is adjustable. The raceways may be swung outwardly into an inoperative position. Driving-mechanism.-The machine has a shaft 4 driven by a belt from any suitable source of power and is set in motion by tripping a clutch such as described in the above-mentioned Specification. A locking-cam 142, Fig. 1, is arranged to act on the clutch, the cam being moved by a spring 140 to disengage the clutch and apply a brake. A belt-tightening device 144 is also provided.