Patent GB-288659-A (GB)
Title: Improvements in or relating to automatic weft-replenishing means for looms for weaving
IPC: D03D45/20
Filed: 1928-10-16
Abstract: 288,659. Terry, P. J. Oct. 15, 1926. Shuttles, changing bobbins and other weft carriers in, automatically.-The cop to be inserted into the shuttle is removed from a magazine into a position above the shuttle a comparatively long time before the lay has completed its forward stroke, the cop then moving with the lay when a striking means is operated to insert the fresh cop and eject the spent one. When the weft is substantially exhausted or has broken, a shaft 42, Fig. 8, is caused to turn by mechanism described below and to move arms 56 into the position shown through an arm 51, a lever 53, and a resilient link 55. The lower ends of the arms normally hold the lowermost cop 59 in a magazine 57. but, upon call for replenishment, carry it into a. position over the shuttle. As the lay advances, a striker 62 carried on the lay engages a spring bunter 61 on the lever 53 whereby the spent cop 27 is ejected from the shuttle 26 and a fresh cop 59 is inserted therein. After replenishment has been effected, the arms 56 are returned to normal position, and the lever 53 is turned so that the bunter 61 is above the path of the projection 62b on the striker 62. Weft ends, manipulating. The weft ends from the cops in the magazine 57 are held beneath tags 67, Fig. 7, on an endless belt 68 passing over pulleys 69, 70, the pulley 69 rotating with a ratchet wheel 72 by a pawl 73 at each weftreplenishment, whereby the weft ends are guided along a guide 74, the lower end 74a of which guides the of the lowermost pirn. Weft feeler arrangements. When the lay moves forwardly, a spring-controlled feeler 20, Fig. 1, enters apertures 22, 25 in the shuttle box and in the shuttle and engages with the cop. If insufficient weft is on the cop, the feeler enters into the shuttle far enough to cause a tail 33 of a spring-controlled lever 28 on the feeler 20 to engage the side of the shuttle, so that the free end 28a of the lever engages a projection 30 on an arm 31. A shaft 32 is thereby turned and an arm 34, Fig. 2 causes the end 40<a> of a lever 40 to be moved into the path of the weft hammer 44. The lever 40 is pivoted on an arm 41 of the shaft 42, which is rocked thereby to effect weft replenishment. Initiating replenishment on weft failure. If the weft breads, the weft fork 46, Fig. 2, is not moved out of the path of the weft hammer 44, so that a spring-controlled slide 48 is moved to the left and a projection 49 thereon engages a projection 50 on the lever 41 whereby the shaft 42 is turned to effect weft replenishment. Weft, cutting. The weft extending from the fresh cop is held beneath a light spring 88, Figs. 11 and 12, forming a clip on a shuttle feeler lever 75, the thread being severed by the usual means at the end of the beat-up. The thread of the existing or out-going cop normally passes in a bifurcation at the end of the lever 75. When replenishment takes place, the shaft 42 turns and causes a lever 91 pivoted at 92 to be turned from the position shown in Fig. 11 into that shown in Fig. 12, so that the weft passes between a cutting- blade 90 on the lever 91 and the end 89 of the lever 75. When the lay beats up, it engages a projection 94 on the lever 91 whereby the thread of the out-going cop is severed between the parts 89, 90, the lever 91 being closed on the lever 75.