Patent GB-190428373-A (GB)
Title: Improvements in Looms for Weaving
Inventor: WILKINSON HENRY
Filed: 1904-12-27
Granted: 1905-04-06
Abstract: 28,373. Wilkinson, H. Dec. 27. Looms, general arrangement of; beat-up motions; lays; shedding-motions; stop-motions; weft forks; guards and protectors; warp tension, regulating.- In change-box looms, lappet looms, carpet looms, and other looms in which the lay and the parts reciprocating with it are very heavy, the lay and these parts are made stationary except as regards transverse motion, and the whip roll M, lease-rods L, temples, breast-roll N, and portions of the shedding and stop-motion mechanism are mounted in a carriage F, whi h is reciprocated on antifriction rollers f<1> by means of a connecting-rod f<2> and a crank-wheel G cn a shait E, so that portions of the warp threads and the woven cloth are reciprocated in a plane at right-angles to the reed R, and the newly-inserted weft is beaten up at the backward movement of the carriage. The shaft E is driven by spur gearing from a lower driving-shaft, and in turn, through spur gearing, drives a shaft t<2> on which is mounted a cam t<1>. The shaft t<2> rotates once during two revolutions of the shaft E, and the cam t<1> acts through a lever T to rock a tilting plate Q, which is pivoted on the loom frame at q<2> and has inclined slots q<1> engaging a cam-roller k<6>. The upward movement of the lever T is limited by a stop-pin, and the lever is held against the cam t<1> by a spring. The roller k<6> is carried by an arm k<5> projecting from a toothed segment k<3> pivoted at k<4> on the carriage F. The healds H are mounted in the usual manner between upper and lower rock-shafts carried by the carriage F, and the lower rock-shaft has a pinion k' gearing with the segment k<3>. The plate Q is rocked so that the roller k<6> enters the upper and lower slots q<1> at alternate forward movements of the carriage F, thus rocking the segment k<3> and alternately raising and lowering the healds H. When more than two shafts of healds are employed, the shedding-mechanism may be duplicated, or any known shedding-mechanism may be used, with suitable modifications. The reed R is mounted between a cap S' and a lower bar S, of which the upper surface serves as the shuttle-race. The shuttle boxes, of any known construction, are secured to the bar S, and the shuttles are picked by means of picking-sticks P, operated in any desired manner. Change-box or weft-replenishing mechanism of any desired form may be employed. The stop-rod and its dagger are mounted on the stationary lay, and the frog is carried by the carriage F. The weft fork I is mounted on the carriage F, and is operated upon by the weft in the usual manner. When the weft fails or is broken, the front end of the weft fork is not raised, and, as the carriage F is moved forwards, strikes a slide i<1>, which is pushed forward and acts through a cranked lever i<2> to release the shipper lever V and stop the loom. The warp beam X and the cloth beam Y are mounted in the loom frame in the usual manner, and a protecting- shield Z may be provided at the front of the loom. The variation in the tension of the warp and the woven fabric, caused by the movement of the carriage, is compensated for by springs m<1>, n<1> beneath the bearings of the whip-roll and the breast-roll respectively. Uniformity in tension may otherwise be obtained by mounting the small rollers m', n<2>, shown journalled in the carriage F, in bearings in the fixed frame, so that, as the warp is wound round the roller m' by the motion of the carriage, the fabric is unwound to the same extent from the roller n', and vice versÔ.