Patent GB-563863-A (GB)
Title: Improvements in or relating to the spindle apparatus of spinning, twisting and the like machines
IPC: D01H1/02
Filed: 1943-02-05
Abstract: 563,863. Spinning yarns. GIBSON, W. Feb. 5, 1943, No. 1934. [Classes 120 (ii) and 120 (iii)] In a spinning, twisting, or like frame, particularly for wet spinning, the yarn is laid on detachable yarn-receiving means supported on the spindle, by a member adapted to rotate relatively to the yarn-receiving means and having yarn guides at its upper edge with its lower part rotatably mounted in a bearing while said part forms a bearing for the spindle up to near the yarn guides so that the maximum unsupported lengths of the spindle above the bearing does not exceed or substantially exceed the length of the building traverse and has a recess, for accommodating the yarn-receiving means, extending downwards a sufficient distance from the yarn guides to permit laying - on being commenced at the top of the yarnreceiving means. As shown, each spindle 24 has a footstep bearing in the builder rail 32 and also has a bearing in the bore 25 of the lower cylindrical part 19 of the cup-shaped member 16 which forms the laying-on member ; the bore 25 extends from the lower end to the top of an inner cylindrical part 23 of the cylindrical part 19 extending upwards from the bottom of the part 19 to a short distance below the level of the yarn-guiding eyes 18 formed at the ends of slot 17 on the upper edge of the cup 16. The upper edge of the cup 16 may be detachable and mav be formed of chromium steel to resist wear and corrosion. The yarn-receiving means or pirn tube 22 is slidably guided and supported on the part 23 and is prevented from rising off the spindle 25 by a pin 28 on the top of the tube engaging a transverse dovetailed slot 27 in the enlarged head 26 of the spindle when the latter is being driven by the tube. The builder rail 32 is formed as a casing in which is located the drag mechanism for the spindles, each spindle carrying a drag pulley 35 engaged by a flexible and extensible drag wire 38 attached at one end by a hook 39 to a bracket 41 in the casing and having the other end attached to a knurled knob 43 extending outside the casing and carrying a pin 49 which is engaged with one of a series of notches 48 in a rail 47 on a bar 46 slidable on the casing and connected by a spring 52 to a fixed bracket 50 on the casing ; the drag on each spindle is individually adjusted by moving its knob 43 so that the pin 49 engages an appropriate notch 48 and the spring 52 may be adjustable to vary the drag on all the spindles simultaneously. The drag may be varied during building by extending the bar 46 so that it engages a member 75 pivoted to parallel links 76 pivoted to the frame, the upper link being extended to engage a cam plate 77 adjustably fixed to a plate 78 on the face of the oscillating head 64 of the builder mechanism which operates in the usual manner. The top of the pirn tube has a spring clip with which the end of the yarn is engaged, being marked at the top of the pirn tube 22 with the spindle in its lowest position and the tube 22 extending well down into the recess 21 between the parts 19, 23 of the laying-on member 16 and when the pirn is complete it is automatically doffed, disengaged from the spindle, and left sitting in the cup, by lowering the spindle to its lowest position by actuating the hand wheel 70. A portable brake having spring jaws lined with felt may be used to engage the bottom of the cup to stop the latter when piecing up is necessary, the brake having a downwards projecting member to engage the rail 30 in which the cup is journalled and driven by a wharve 20. The footstep bearing of the spindle may be adjustable to take up wear and the drag may be provided by a disc fixed to the spindle frictionally engaging a disc having upwardly projecting pins passing through holes in a cap in the builder rail casing and pressed against the other disc by an adjustable compression spring ; a centrifugal drag comprising members which move outwards and engage the wall of the casing as the spindle rotates may be provided. The yarns, from the creel 1, pass over guide rods 4 and through the usual trough, to grooves in the reciprocating bar 6 and the drawing head 7, 8 which may be arranged as described in Specification 468,953. From the drawing head, the yarns pass through tubes, diametrically arranged in a tube 9, to the cups 16 ; the diametrically-arranged tubes are slotted to register with entry slots in the tube 9 and the slots are covered by curved members 15 for guiding the yarns into the slots.