Patent GB-191005666-A (GB)
Title: Improvements in or relating to Shoe Sole Flexers.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D27/00
Filed: 1910-03-07
Granted: 1910-09-15
Abstract: 5666. Plant, T. G. March 7. Soles, machines for.-Soles are rendered flexible by being bent backwards and forwards several times. One end of a sole S, Fig. 5, is placed between a fixed jaw 24 and a jaw 28 pivoted at 27 to the fixed jaw. The sole is clamped during the bending operation by a spring plunger 37 carried bv an arm 38 secured to a rock shaft 30, and at the other end it is held between a jaw 49 carried by an arm 48 on a shaft 47 and a jaw 54 carried by a link 52 pivoted to the arm 48. The link 52 carries a cam roll which engages in a cam 60, 61. In the starting position of the machine, the sole S is straight and the cam roll rests in the straight portion 61 of the cam ; when the machine starts, the movement of the roll up the straight portion clamps the sole firmly between the jaws. The shaft 47 rotates, while the cam roll passes round the concentric cam 60, thus bending the sole to the position shown in Fig. 5. The shaft 47 is mounted in a slide 46 which rides on rods 44, Fig. 1, and is moved by a cam-actuated lever 63 having at its end a forked portion 64 carrying a block mounted upon a pin 66 projecting from the slide. The lower part of the lever 63 has slides 67 in which a block 68, Fig. 7, mounted on a pin 69 projecting from the face of a driving gear 72 moves. The position of the pin may be varied by a screw 75 passing through a block 70 carrying the pin. The screw 75 is rotated by a bevel-wheel 79 engaging a facegear 80 let into the face of the gear wheel 72. A hand-operated cog-wheel 89 normally gears with both the teeth on the gear wheel 72 and the side teeth on the face-gear 80, and so causes the two to rotate in unison. The wheel 89 may be moved axially against the pressure of a spring 91 so as to engage the face-gear 80 only, thus enabling the position of the pin 69 to be adjusted. The shaft 47 on the slide 46 is rotated by a rack-and-pinion gear, the rack being mounted on a slide having a pin 99 projecting into a block carried in the forked end of one arm of a bell-crank lever 95, which is pivoted on the. lever 63 and has at the extremity of its other arm a cam roll 101 engaging a stationary cam 102 at the end of an arm 103. The position of the cam 102, which governs the rotation of the shaft 47, is automatically varied in accordance with the position of the pin 69. The arm 103, which is normally locked in position by a plunger 107 and rack 108, is released by a cam at the end of each revolution of the gear-wheel 72, and is pulled across by a spring 104 until a projection 111 on the arm engages the pin 69. The machine is started by depressing a treadle, which throws in a Horton clutch on a driving-shaft 5. When the sole by being moved backwards and forwards has been rendered sufficiently flexible to allow a feeler 127, forming one arm of a rock shaft 126. to the other arm of which an adjustable spring 128 is secured, to bend it back, a trip gear is operated which stops the machine. The finger 127 is normally held away from the sole, but is freed by a cam once during each revolution of the gear-wheel 72. A hand-operated stopping gear is also provided.