Patent GB-190912867-A (GB)
Title: Improvements in or relating to Heeling Machines.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D79/00
Filed: 1909-06-01
Granted: 1910-06-01
Abstract: 12,867. Plant, T. G. June 1. Heels, machines for.- The heel is held on an anvil which is adjustably supported on a plunger 32, Fig. 8, cushioned by a spring 36, in a sleeve 34 reciprocated by a cam 42, which is mounted on a bushing on the main n shaft of the machine. The anvil on rising- holds a heel against a nail block, which is held in a beam supported by the machine frame. The heel is pierced by a gang of awls 54, Fig. 3, and, after nails have been fed to the block, they are driven by a gang of drivers 56. The heel is held horizontally, while the awls and drivers move in an inclined direction, thus driving the nails obliquely. The anvil 30 starts its downward motion before the completion of the stroke of the drivers, thus leaving the heads of the nails projecting from the heel and clear of the nail block. The awls and drivers are mounted on a shaft 60 pivoted in a cross - head 62, and are turned into operative position by rack-and-pinion gearing actuated from a pinion splined on a shaft 78, which is itself rotated by a bevel-wheel engaging a sector 82, Fig. 10, rocked by a cam in a disk on the driving- shaft 110, Fig. 9, at the rear of the machine. The cross-head 62 is positively reciprocated by cams 100, 101, Fig. 8, on the main shaft 114 engaging rollers 98, 99, which are supported on yokes 96 at the end of rods 94 carrying the cross-head. The cross-head 62 reciprocates twice while the anvil reciprocates once. Springs 102 ensure the rollers 98, 99 being held closely to the cams. At the beginning of the downward movement of the cross-bead 62, the awls or drivers are guided into the holes in the nail block by a roller on the awl block or driver block engaging in a guide on the frame, but when the awls or drivers have entered the block, the roller clears the guide, thus permitting the awls or drivers to move downwards with minimum friction. The heels are fed up to the machine by a rotary three-armed carriage, which moves under an independent face guideplate 131, Fig. 3. The carriage is supported on a shaft 132, Fig. 9, rotated with a step-by-step movement through ratchet gear by a rocking lever 158 having a roller riding on a cam 160. The position of the lever 158 is adjustable by screws 162. A locking-device, freed by a cam on the driving- shaft, is provided for holding the heels in exact operative position. A hand-operated release is also fitted in order that the heel-carrier may be turned by hand. Heels of excessive height are removed from the carriage by an ejector 198, Fig. 8, which is supported by a spring hinge on an arm extending from the anvil. Nails are fed to the block by a carrier 206, Fig. 3, pivoted on the slide rod 94 and oscillated through sector gear by a shaft 210, which is moved through a bevel-wheel and sector gear by a lever carrying a roller riding on a cam on a bushing on the driving-shaft 110. The lever is connected to the sector gear by a spring, thus giving a yielding movement to the nail carrier both towards and from the hammers. The machine is started by depressing a treadle connected to a rock-shaft 244, Fig. 8, thus turning a bell-crank lever 248 to press a rod 238 to the right against the pressure of a spring 240, and to throw in a friction clutch. A brake lever, which, in the "on" position, rests in a notch 274 in the rod 238, is depressed by the movement of the rod, leaving the machine free to start. The brake lever may also be operated by hand. The starting-treadle, after being pressed down, is held in that position by a spring-pressed latch 254, Fig. 7. The latch is pressed back by a hand-lever or by an auxiliary treadle 258. To stop the machine, should the nail-carrier jam in naildischarging position, an arm 260, projecting from the latch, is adapted to be engaged by the end of a lever 263, which carries a cam roller 266 riding on a cam on a gear-wheel 112 on the main shaft. The lever 263 is supported from a bell-crank lever 262, which is rocked by a rod 268 attached to the nailcarrier lever. Normally, the rod 268 withdraws the arm 263 before the upward slope of the cam causes the end of the arm to rise. Should the carrier jam, the arm 268 remains stationary, and the arm 263, on its upward movement, engages the projection 260, thus forcing back the latch 254. The spring 240 then throws out the clutch and releases the brakes, thus stopping the machine.