Patent GB-190210314-A (GB)
Title: A Machine for the Automatic Manufacture of Healds for Looms.
Inventor: GOHY JEAN
Filed: 1902-05-05
Granted: 1903-05-05
Abstract: 10,314. Gohy, J. May 5. Bending; straightening; making parts of looms.- A machine for making loom healds from wire has the wire supplied to it in a continuons length consisting of two wires soldered together. A length is cut off and its ends are bent round fingers 94, Fig. 17, to form end loops, after which the double wire is separated at the middle and near the ends, to form the middle loop and to provide spaces to receive the ends of the end loops. The middle and ends are then twisted to produce the finished heald shown in Fig. 20, the ends of the wire being contained in the spaces 153 to prevent the formation of any projection or roughness on the heald. The machine has a cam shaft 3 driven by a pulley 4 with a clutch 6 operated by a handle 7. A mutilated bevel-wheel 8 on the pulley has sufficient teeth to cause a shaft 10 to make one revolution during each revolution of the cam shaft. The shaft 10 has a crank 12 of adjustable throw connected by a telescopic rod 14 to a gripper 15 for drawing forwards the wire 37 through a collar 36 and through a shear-plate 42. The collar is of elastic material, and can rotate in its support 33, to free the wire from kinks and to straighten it. The support 33 and the shear-plate 42 are mounted on guide-rods 32 on which the gripoer reciprocates, the rods being supported by brackets 31 on a table 27 carried by the bearing- blocks 2 of the cam shaft. After a length of wire has been cut off by a blade 46 moving over the face of the plate 42 and operated by a cam, and has been drawn forwards into the machine by the gripper, the crank 12 comes to rest on a stop 23 carried by a rock-shaft 20. The crank is released by a cam 17 engaging an arm on the rock shaft, and is then rotated by the wheel 8 to move the gripper backwards against the plate 42, which is slightly displaced against the action of a spring 44, so that the then projecting end of the wire may be gripped between a spring-closed pivoted jaw 55 on the gripper and the lower fixed jaw 53. The jaw 55 is opened during the backward movement of the gripper by a stop 40 pivoted on an arm 371 mounted on the rods 32, the stop depressing the end 58 of the jaw to open it during the back stroke, but wiping idly over it during the forward feed-stroke. At the end of the feed-stroke the jaw is again opened by contact with a fixed stop 59, the straightened wire being at the same time cut by the blade 46 and gripped by a pair of nippers 60 similar in construction and operation to the gripper 15 but moved transversely to it by a cam-operated rock-shaft 67. The nippers deposit the ends of the wire in matrices 79 carried by brackets 80 on the table 27, the middle portion having passed through a radial slot 119, Fig. 12, in a pinion 115 and its bearing 114, to the centre of the pinion. The ends of the wire are then bent round pins 94 to form the end loops by the ascent of hooked plates 93, which have first a vertical and then a rocking movement on their guides 82. The two wires are then separated near the ends to form the spaces 153, Fig. 20. by punches carried by the brackets 80 and forced downwards by springs when released by cams. Flat portions of the punches press the ends of the wires into the spaces 153, and hold them in the matrices during the subsequent twisting of the end loops. During the formation of the end loops, a punch 129 carried by the pinion 115 is pressed down by a camoperated arm 127 to form the middle loop, the punch being held in its depressed position by a spring catch 131, while the pinion is caused to make an integral number of revolutions by a mutilated wheel 120 to twist the wire on either side of the loop, the wire being held between jaws 108 fixed on a bracket and cam-operated jaws 109, the pairs of jaws being arranged on each side of the pinion. After the twisting the catch 131 is released by a cam roller 135. Simultaneously with the twisting of the middle loop, the end loops are twisted by the rotation of shafts 139, to which are pivoted arms carrying the fingers 94 which project through the shafts. The shafts are caused to make an integral number of revolutions by mutilated wheels 145 engaging pinions on the shafts, the latter being capable of longitudinal movement against the action of springs 147 to allow for the shortening of the heald due to twisting. The fingers are then withdrawn from the loops by levers 150 pressed against the arms carrying the fingers by cams 149. The finished heald is then removed from the machine by the nippers 60, which move forwards to receive a fresh blank. The supports mounted on the table 27 may be adjusted to suit the dimensions of the healds to be made. The firstmentioned punches may be omitted if the ends are not required to be inserted in spaces 153.