Patent GB-190327117-A (GB)
Title: Improvements in and connected with the Leno and Shuttle-box Motions of Looms for Weaving.
Inventor: HOLLINGWORTH EDWARD
Filed: 1903-12-11
Granted: 1904-12-01
Abstract: 27,117. Hollingworth, E., and Paton, W. Dec. 11. Loom shedding-motions.-In a leno motion, the reed 2, Fig. 1, carrying the needles 2<1> through which the leno warps are passed, is moved up and down by lever mechanism 3, 4,5 actuated from the jack lever 6 of the dobby. The other warp threads passing through the reed are caused by harness bands 8 to pass from side to side of the needles 2<1>, so that, on the downward movement of the reed, they pass alternately in the right and left half divisions of each division of the reed, thus securing the crossing of the threads. The harness bands 8 pass through slots in a fixed board 7, and also through slots in the board 31, which is reciprocated from the jack lever 6 by lever and crank mechanism and toothed gearing including a wheel 20 intermittently rotated by a lever 17 engaging studs on a wheel 18 fast to the wheel 20, a locking-lever 33, working in contact with a second series of studs on the back of the wheel 20, ensuring the accurate intermittent rotation thereof and then locking it in position. The jack levers are operated by means of the usual reciprocating knife bars 13, 14 and a special needle 15 furnished with two projections 15', 15<11> and connected by lever mechanism 16, 16<111> with pattern mechanism. Loom change-box motions.-A frame 36, Figs. 3 and 5, carried loosely on a shaft 37, is oscillated by a bowl 50 and cam 51 ; arms 39', 41<1> are lowered at varying intervals by connection with pattern mechanism, enabling the lugs 36<1>, 36<11> on the frame 36 to engage the shoulders 39<11>, 41<11> and carry the levers 39, 41, fast on the shafts 37, 40, to the right, thus rocking the latter. Forked levers 42,43 on the shafts 37, 40 are oscillated, and move endwise the rotatably-mounted sliding bosses 45, 46, having flanges or discs provided with two unequal fingers 53 taking into ways or recesses in the mutilated pinions 47<1>, 48<1>. The larger finger is turned round to form a tooth 53', and each disc has a tooth 53<11> formed on its periphery opposite the short finger. In the position shown, starting- teeth on the segmental master gear 54 engage with the tooth 53<1>, so that the teeth of the following segment engage with, and rotate, the mutilated segment half a revolution, when a blank on the pinion 47<1> comes opposite the master gear. On moving the boss 45 to the right, the finger 53<11> is placed in the path of the starting-tooth, and the pinion is rotated another half-revolution. The pinion 48<1> is similarly rotated, and the rotation of the pinions 47', 48<1>, by crank and lever mechanism 57, 59, gives motion to, and determines, the position of the shuttle box. Fixed stop-pieces 56 lock the pinions against return movement after each half-revolution. The motion of the levers 39, 41 can be transmitted to similar levers in a duplicate arrangement at the opposite side of the loom, or the motion of the box lover 59 may be transmitted instead. Fig. 3<a> shows an alternative arrangement of the levers 39.