Patent GB-190114509-A (GB)
Title: Improvements in and relating to Mechanism for Supplying Weft or Filling to Looms for Weaving
Inventor: BAKER WILLIAM HENRY
Filed: 1901-07-16
Granted: 1901-09-28
Abstract: 14,509. Baker, W. H., and Kip, F. E. July 16. Loom shuttles, changing bobbins and the like in automatically; stop-motions; shuttle-changing mechanism.-The bobbin g, Fig. 3, is held in place in the shuttle v, by a metallic spring clip 15, which embraces metal rings 16, on the bobbin. A metal thimble 17 is fitted on the butt end of the bobbin, and a movable contact-piece 19 is attached to the shuttle, its free end being normally held out of contact with the thimble by the weft on the bobbin. Two telescopic spring-controlled feelers 5, 5 are mounted upon an insulated metal plate 6, and form part of an electric circuit 1, which includes an electromagnet 3. When the weft has been so far exhausted as to allow the piece 19 to rest in metallic contact with the thimble 17, then, on the next beat-up of the lay c, the feelers 5 respectively strike the clip 15 and piece 19, and thus the electric circuit is closed and the magnet 3 is excited. The armature lever 8 of the magnet 3 is pivoted to a slide which actuates an arm secured to a rocking-shaft j, Fig. 5. A slot 12 is formed in the lever 8, and, when the armature is attracted towards the magnet, this slot is entered by a branch 13 of the weft-fork hammer, and the slide actuates the shaft j. The shaft j is connected by means of a spring to an arm k, which is connected by a link m to a pivoted dagger or arm n, adapted to engage with a striking-arm u on the lay c. The dagger n is pivoted to a bracket o on a pivoted lever p, the upper end of which is connected by means of links q, r to a driver i, arranged to force a full bobbin, from a magazine of the usual kind, into the shuttle. To prevent the driver from acting, when the shuttle is not in correct position, a vertically-movable rod w is fitted to the lay, and carries a roller x which rests upon the arm k. When the shuttle is not in position, the upper end of the rod w strikes it, and the arm k is prevented from actuating the dagger n. The invention may be applied to looms such as those described in Specifications No. 9585, A.D. 1899, and No. 14,078, A.D. 1900, in which the shuttle carries a weft case or bobbin case of any known form. The invention is also applicable to electrically-controlled means for stopping looms where ordinary shuttles are employed, and to electrically - controlled shuttlechanging mechanism, such as described in Specifications Nos. 14,045. 17,495, 17,496, 17,497, 17,528, 18,234, and 18,469, A.D. 1899. A means for automatically stopping looms running at moderate speeds, to allow the weft to be replenished, comprises an electromagnetic circuit actuating an armature which is connected to a dagger pivoted to the knock-off lever ; this dagger, when operative, engages with a striking-piece secured to the lay. In modified forms of stop-motion, for fastrunning looms, there is employed an armature which is raised by the attraction of its magnet, and this armature is connected to a hooked lever, or to a dagger, actuated by the lay or other vibrating part.