GB189812811A - Improvements in Machines for the Manufacture of Pile Fabrics. - Google Patents

Abstract

12,811. Foster, H. A., and Lee, R. June 8. Pile fabrics.-In manufacturing cut-pile fabrics of the kind described in Specification No. 5158, A.D. 1896, the horizontal needles 1 for piercing the backing or foundation and carrying the pile threads 3<a> through it are actuated by a sliding bar 3, which is reciprocated in slides 4 by tappets 5 on a cross-shaft 6A. The latches 8<a> of the needles 8 protrude beyond the hooks, to enable them to be opened by the pile threads. The hooks are mounted upon a bar 9, which is moved up and down in slides by levers actuated by cams on the shaft 17, the extent of movement being adjustable by shifting the position of the ends of a connecting-link in slots in the levers for the purpose of regulating the length of pile loop. The bar 9 also receives from suitable levers and cams an oscillating motion upon pins carried by the brackets 48, and from a pin and slotted bracket a slight lateral motion as it is oscillated. The hooks 21 which receive the loops from the needles 8 are mounted upon a cam-actuated lever 22, and are oscillated also by suitable levers and cams. A band knife 35 for cutting the loops passes through slots in the hooks 21, and is connected to a rope 39 passing over pulleys 40 ; it is reciprocated by a pin engaging with a grooved cam. To supply a sufficient length of pile threads to form the loop, and at the same time to maintain tension at the required time, the pile threads pass over a bar 49, which is suspended by chains 51 from sectors 52 and moved up and down by a connecting-rod 57 from a camactuated lever ; the threads are normally held against a block 61 by a spring bar 60, which is released at the required times by a tappet 63 and lever 65. The Provisional Specification states also that the extent of movement of the latch-needle bar 9 may be adjusted by varying the position of its fulcrum studs, and that nipping-rollers which hold the thread are turned to let off a predetermined length of thread by ratchet mechanism operated by a tappet on the tappet shaft of the machine.