Patent GB-191312167-A (GB)
Title: Improvements in or relating to Variable-speed Driving Mechanism.
Inventor: WADE HAROLD
IPC: B65H59/38
Filed: 1913-05-24
Granted: 1914-05-25
Abstract: 12,167. Wade, H., [Leeson, J. R.]. May 24. Winding - machines.- Relates to variablespeed mechanism of the type comprising a gear connected to a shaft through an element which is rotated during the rotation of the shaft and gear to rotate one of these members relatively to the other and is particularly applicable for winding - machines for wire &c. to regulate the speed ratio between two portions such as the winding-spindle and traverse cam. As shown the device is applied to the winding-machine described in. Specification 4091/13. Mounted in bearings in the frame A is a cam shaft c arranged below and driven from the winding-spindle b. The shaft c carries the cams C, C<1> for reciprocating the thread-guide G and wire guide H respectively. The cam C is mounted directly on the shaft c but the cam C' is mounted on a bushing a<4>, adapted to be rotated independently of the shaft c. The thread-guide G is supported in a swinging traverse-frame D pivoted on the axis of the cam shaft c and is carried by a holder g<3> secured to the end of the traverse-rod g, which slides in a groove in the frame D and carries at its inner end a runner g' from the lower side of which projects a roll or stud g<2> engaging the cam C. The frame D is counterweighted to keep the guide G in contact with the spindle b. The guide H may be similarly supported, or, preferably, there may be secured to the frame A a bracket E having an arm e supporting a longitudinallyextending rod e<1> arranged parallel with the winding-spindle b. Below the rod e<1> is a larger rod e<2> also projecting from the bracket E and carrying a vertical arm e<3> at its outer end, this arm having a bearing at its upper end to hold the rod e' from bending or vibrating. Mounted to slide on the rod e<1> is a sleeve on which is pivoted a bifurcated arm h' adapted to carry the wire guide H and also a guide wheel or pulley h<2>. An arm, mounted in a bearing on the bracket E, has at its lower end a hub provided with a pin on which is mounted a roll driven by the cam C<1>. Connected to the arm is a sickle-shaped arm F', the upper portion of which is provided with a series of holes f<7>, any one of which may be engaged by a link J connected to a lug on the sleeve carrying the guide H. The cam C<1> is driven from the spindle b by variable-speed gearing. Secured to the hub of the cam is a worm-wheel K engaged by a worm on a vertical shaft L, the upper end of which is journaled in a bracket M. Rotatably mounted on the shaft L is a bevel-gear N meshing with a similar wheel N<1>, which is driven from the spindle b through gears O, N<2> and an adjustable gear O<1>. The gear N is secured to a member R carrying bearings for a worm shaft s. The worm SÀ is in gear with a worm-wheel T secured to the shaft L, which thus normally rotates solid with the gear N. An intermittent rotation may, however, be given to the worm S in order to vary the relative speeds of the gear N and shaft L. For this purpose a star-wheel S<1> is mounted at either end of the worm shaft s, and in the course of its rotation with the bracket R is engaged and rotated by any desired number of projections depending from a fixed plate U. This plate is formed with slots u<1> placed so as to be at right-angles to the wheel S' as it rotates beneath the slots. Adapted to slide in the slots are members V consisting of fingers v and slotted plates v<1> for clamping to the plate U. If the members V are placed at the outer ends of the slots they miss the star-wheel S', and thus the intermittent motion transmitted to the shaft L may be adjusted as desired. A spring washer s<9> is used in order to provide a slight amount of resistance to the movement of the worm shaft.