Patent GB-191508065-A (GB)
Title: Improvements in or relating to Traverse or Building Mechanism for Forming Cops or Yarn or Thread Packages applicable to Ring Spinning and Twisting Frames and to Winding or similar Machines.
Inventor: JUSTICE PHILIP MIDDLETON
IPC: D01H1/36
Filed: 1915-06-01
Abstract: 8065. Justice, P. M., [Lanning, J. K.]. June 1. Building-motions; winding-machines. - In a building-motion particularly described with reference to ring frames, but applicable to winding and similar machines producing cops wound in conical layers, the traverse or chase and the " gain " or shifting of the traverse are controlled by taking up or letting off the builder chain or similar flexible element, which is attached to controlling-means moved in a determined path upon a carrying-member which has a to-and-fro motion, the controlling-means being in turn controlled by a second chain or other flexible element, which is attached thereto and extends to a fixed point upon the carrying- member. The traverse is increased preferably throughout the whole formation of the cop, and the gain is preferably increased throughout the formation of the base, but may not be subsequently increased. The cop has thus a decreasing taper of chase from nose to base, and the bottom coil of each layer lies safely above that of the layer next beneath, in order to check increase of ballooning and prevent breakage and sloughing of the yarn in unwinding. In the form shown in Figs. 2 and 3, the oscillating builder-lever 9 of a ring frame is given a constant stroke by a cam acting on a bowl 12 on an adjustable extension arm 10, to which a chain 48 is attached. The chain passes round and is attached to a sheave 47 keyed to a stud shaft 42, to which is also keyed a pair of sheaves 43, 44. Two builder chains 18 are attached to the peripheries of the latter sheaves and extend to an arm of a poker-lifting lever, which operates the ring rail in the usual manner. The stud shaft is gradually moved outwards on the arm 25 of the lever 9, being carried on a nut traversed on a screw 38 by mechanism comprising a pawl 28 and ratchet-wheel 29, the disk 27 carrying the pawl being operated from the arm 25 through a lever 21 pivoted to the frame at 20, toothed segment 22 thereon, and pinion 23. The open-slotted end of the lever 21 is adjustably connected by a pin 37 to a slotted extension 34 of the arm 25. The action of the pawl is controlled by an adjustable shield 31, the preferred arrangement being such as to cause the progressive movement to occur at or near the end of the upward lift of the ring rail, and thus increase the speed of traverse at the nose of the cop. The traverse is increased by the gradual increase of the arc in which the sheaves move, and the gain is imparted by the taking-up of the lifter chain by the partial rotation of the sheaves consequent upon their outward movement and their control by the chain 48. The sheaves, instead of being circular, may be scrollshaped, in order to modify the character of the gain, and a progressive increase of gain during the formation of the cop bottom is produced or augmented by arranging that the arm of the bell-crank lever which operates the poker is, as usual, initially inclined downwards and moves towards the horizontal during this period. The ring rail is returned to the initial position at the commencement of each set of cops by winding back the nut, preferably by hand by means of a crank-handle 50. Sets of interchangeable sheaves of different diameter may be provided for varying the gain due to constant movements of the nut, or more than one set may be mounted on the stud 42, and the movements of the nut may be varied by adjustment of the ratchetwheel or by changing the ratchet-wheel or screw. In this manner, the traverse and gain may be regulated separately or together. Instead of operating by take-up of the lifter chain, the chains may be so arranged as to operate by let-off.