Patent GB-190323317-A (GB)
Title: Improvements in Automatic Weft Replenishing Looms.
Filed: 1903-10-28
Granted: 1904-10-27
Abstract: 23,317. Burnley Automatic Loom, Ltd., and Haworth, G. H. Oct. 28. Loom shuttles, changing bobbins and the like in, automatically.-In weftreplenishing looms of the kind described in Specification No. 11,238, A.D. 1902, the change motion is arranged to make its action certain at very high speeds, and render it applicable to underpick looms. Instead of the curved slot, containing three or more weft shells, being arranged in the lay bottom, it is formed by a casting 6, secured to the back of the shuttle box, and by the front of the shuttle box. The shuttle 2 is constructed as described in the above - mentioned Specification, and the lay bottom and the bottom of the shuttle box have a slot 3 cut through them. The lowest shell 1<c> in the curved slot 7 is held up by spring-controlled sliding carriers 12, until it is forced into the shuttle to displace the used shell. The uppermost shell 1<b> in the slot 7 is held in recesses in two carriers 9 formed on a bar 8 having arms pivoted to the casting 6. The bar 8 is held up by a spring 13 surrounding a bolt 14, so that the shell 1<b> is pressed against two horns 17 cast with the top of the slot 7. The magazine 21 is adapted to contain a number of cop shells, and is fixed to a bracket bolted to the loom side. The magazine is open at the top and bottom, and has a narrow slot 22 at its outer side for the weft ends, which are threaded through the ends of the shells. The shells in the magazine are supported by two concave carriers 23 cast on a cross-bar 24, which is guided to move up and down. When the weft fails, a lever connected to the wett-fork holder turns a horizontal shaft, which, through a crank and connecting-rod, raises one end of a weighted pivoted lever. The cross-bar 24 is connected by a rod 27 to the other end of the pivoted lever, so that the cross-bar 24 and the carriers 23 are lowered. The lowest shell 1<a> resting on the carriers 23 is lowered with them, and brought opposite the opening of the slot 7. The remaining shells in the magazine are supported when the carriers 23 are lowered by fingers forming the prongs of a fork, of which the stem slides in guides and is pulled by a spring towards the shells. The fingers are normally pressed back by an incline on the bar 24 acting on an inclined finger fixed to the fork, but when the bar 24 is lowered, the fork is drawn forwards by its spring. When the lay beats up, inclines on the front of the carriers 9 lift the lowered shell 1<a> against the horn 17, and are then depressed by the shell, the spring 13 yielding. The shell 1<a> presses back the shell 1<b> till it takes its place, whereby the shell 1<c> is forced past the supports 12 into the shuttle, and the spent shell falls through the slot 3 upon an inclined shoot, and is guided outside the loom. The supports 12 move in again when the shell 1<c> has passed them. When the change of shells has been effected, the weft fork is released, and the weighted pivoted lever returns the parts to their normal positions. In the Provisional Specification, it is stated that the magazine may be arranged as described in the abovementioned Specification, and that the weighted pivoted lever may be operated by a cam on the tappet-shaft, the cam being moved into operating position by mechanism actuated by the weft fork.