Patent GB-690099-A (GB)
Title: Improvements in or relating to mechanism for guiding a continuously running wire or the like, as in the winding of drums
IPC: B65H54/28
Filed: 1949-09-26
Abstract: 690,099. Winding wire-traverse mechanism. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., GRIFFITHS, F. T., BAWTREE, E., and QUINTON, G. Sept. 26, 1950 [Sept. 26, 1949], No. 24675/49. Class 120(ii) Mechanism for guiding a continuously running wire or the like to-and-fro, as in the winding of drums, in which the to-and-fro movement has to take place first between one pair of predetermined limits and then between a second pair of predetermined limits, comprises two elements, one of which is an arm arranged to oscillate with respect to the second element the latter being arranged to move to-and-fro with respect to the said pairs of limits, a guide, for the wire, pivotally mounted on the said arm and so linked to the said other element that the guide moves parallel to itself as the arm is oscillated, and means for moving one of the elements to-and-fro to reciprocate the wire between either pair of limits, and for moving the other element to-and-fro for changing over from one pair of limits to the other and vice versa. As shown a pair of co-axial drums 1 and 2 are fixed to spindles 3 and 4 rotatably mounted in head stocks 5 and 6. Wire or the like to be wound on the drums passes between rollers 8 at the end of the flaking arm 9 pivoted at 10 to a carriage 11 which is reciprocated along rails 12 and 13 with a stroke equal to the width of the drums by a continuously rotating shaft 101 having a right and left-hand lead screw 101a the threads of which are coterminous and continuous with one another, the screw being engaged by a flange on a block fixed to a projection 104 beneath the carriage platform 60. When one drum (2 as shown) is full the arm 9 is turned about its pivot 10 to a position on the other side of the line AA, the wire being then wound on to drum 1. The swinging over of the arm 9 is achieved through a segmental gear 62 beneath the pivot 10, meshing with a rack 63 arranged to be thrust to-and-fro by piston rods 64 and 65 carrying pistons reciprocable in cylinders 67 and 68. The pistons are pneumatically operated as shown but they may be hydraulically or electrically operated. The arm 9 comprises a main arm 56 the end of which is forked and carries a plate 85 pivoted on a pin, the plate 85 carrying rollers 8 and 89 which constitute a guide fo the wire. In order to maintain the plate 5 in parallel relationship with the axis of the drums 1 and 2 as the arm 9 is turned from one position to the other it is made to form one side of a parallelogram linkage the other three sides of which are the two links 94 and 95 and that part of the platform 60 lying between pins connecting said links 94 and 95 to platform 60. The whole mechanism is mounted on rollers 105 so that it can be shifted to and frobetween 'stops 106 and 107 by means of a pneumatically operated double acting pis-- ton and cylinder assembly 111 having a. piston rod 112 fixed at 113 to the platform 26 carrying the mechanism. This movement is provided to enable the vertical plane bisecting the drum being wound, to be brought into line with the wire as it is fed from some fixed machine, to pre-- vent undue bending of the wire. When winding on the second drum has commenced the length of wire between the two drums is severed and the first wound drum is replaced by an empty drum. Specifica-- tion 690,100 is referred to.