Patent GB-512495-A (GB)
Title: Improvements in means for winding flexible materials on to spools, bobbins or the like
IPC: B65H59/38
Filed: 1938-03-12
Abstract: 512,495. Winches. BRITISH INSULATED CABLES, Ltd., BANNISTER, L. C., and CLEMENTS, W. J. March 12, 1938, Nos. 7734 and 14074. [Class 78 (v)] [Also in Groups IX and XVI] In apparatus for winding wire, strip material or the like on to a spool or holder, the spool or holder is mounted in a carriage which is free to move in a fixed path under the action of the weight of the spool or holder with the material wound thereon and a biassing force which resists such movement, the effect of the forces acting on the carriage being such that the carriage takes up a position of equilibrium depending on the weight of the material wound on the spool or holder and the movement of the carriage varies the speed of rotation of the spool or holder so that this speed decreases as the amount of material on the spool or holder increases ; the arrangement may be such that the tension of the material being wound acts against the biassing force. As shown in Fig. 1, the spool 1 is mounted in a frame 3 pivoted on a shaft 4 supported in the main frame of the apparatus and is supported in the sides of the frame on two centres mounted in heads in the frame, one head being fixed and the other being movable therein along rods supported in the sides of the frame 3 to enable a spool to be mounted in or removed from the frame. The centre in the fixed head is rotatably secured to the spool and is driven from a shaft coaxial with the shaft 4 and driven from the motor 9. The shaft 4 is coupled by sprockets and a chain 27 to a shaft 24 to which are fixed frames 28 carrying weights 31 adjustable in the frames by screwed shafts 33, the shaft 24 is coupled by sprockets and a chain 39 to a rheostat 36 in the power circuit of the motor 9 and adjustment of the rheostat alters the speed of the motor and of the spool 1. As the spool fills the frame 3 pivots under the action of its weight, rotates the shaft 4 and consequently the shaft 24 so that the weights 31 are raised and as the spool moves downwards, the resistance of the rheostat is increased and the speed of the motor 9 and of the spool 1 are decreased; the wire 46 passes around pulleys 47, 48 freely mounted in the frame 3 and the tension of the wire also tends to rotate the frame in the same direction as it is rotated by the spool. In a modification, Fig. 3, the spool 51 is journalled in a frame 53 pivoted on a driven shaft 55 carrying a conical pulley 58 coupled by a belt 61 to a conical pulley 59 mounted in the frame and driving the spool by a belt 63. The belt 61 passes between a pair of arcuate guide members 64, 65 mounted on fixed supports 66, 67 and as the pivoted frame rotates in an anti-clockwise direction around the shaft 55 the guides 64, 65 cause the belt 61 to slide along the conical pulleys and reduce the speed of rotation of the spool, the pivoting of the frame being caused by the weight of the spool and the wire wound thereon, the weight of the conical pulley 59, and the tension of the wire 68. According to the first Provisional Specification an additional weight may be arranged to exert a turning force about the axis of the pivoted frame which does not vary with the position of the frame or the additional weight may be arranged to exert a turning force varying with the position of the frame and depending on the characteristics of the means for controlling the speed of the spool.