Patent GB-190626322-A (GB)
Title: Improvements in Automatic Reshuttling Mechanism for Power Looms.
Inventor: ROSTRON JAMES
Filed: 1906-11-21
Granted: 1907-11-21
Abstract: 26,322. Rostron, J., and Worman, T. Nov. 21. Loom shuttle-changinq mechanism ; shuttle boxes; shuttles.-In shuttle-changing mechanism of the kind described in Specification No. 1625, A.D. 1905, the front 1 of the shuttle box is mounted on a long lever 3, which is pivoted on the axis of the lay-swords and is normally held in position by a flexible band 7 and a spring 6. Instead of a single lever 3, two such levers may be used. When a fresh shuttle is to be inserted, a shaft 19 is rocked and an arm 18 thereon is raised, and through a link 17 raises a pivoted lever 16. A pin 15 on this lever raises the front end of a lever 12 pivoted to a lever 13, which is pivoted at 14 and carries a roller 20 held by gravity or by a spring or weight in contact with a cam 22 on the tappet-shaft. When the lever 12 is moved forwards by the action of the cam, a notch 12<a> therein engages a projection 23 on the lever 3, so that the box front 1 is moved forwards and pushes the bent lower ends of springs 26 from under the shuttle magazine 24, the lowest shuttle dropping on to plates 27 behind the front 1, as shown. At the same time, a pin 32 on the arm 18 raises a pivoted lever 31, and as the lay moves back the cranked end of the lever 31 engages the down-turned end of a lever 33 on the axis of the pivoted back 28 of the shuttle box. The back 28, which is normally held in position by a spring, is moved into a slanting position across the entrance to the box, so that the empty shuttle picked from the opposite box is guided into a shoot, whence it falls into a receptacle. To prevent breakage owing to any obstruction of the back 28, the lever 31 is pivoted to a pivoted lever, which is held in position by a strong spring. When the lay moves forwards, the back 28 returns to its normal position, the plates 27 enter recesses in the lay, and the fresh shuttle is deposited in the shuttle box by the front 1, which after a dwell in its forward position has commenced to return; as the lay moves back, the cam 22 allows the lever 3 and the front 1 to return with the lay. After the first pick of the fresh shuttle and the subsequent beat-up, the arm 18 is lowered and with it the lever 12 ; as the cam 22 allows the lever 12 to return more quickly than the lay, the notch 12<a> is freed from the projection 23. The magazine 24 is open at top and bottom, and is secured to the loom frame by bars 25. The shaft 19 may be rocked by weft-fork mechanism, or by the weftcontrolling mechanism described in Specification No. 18,519, A.D. 1906, in which the shuttle spindle has a spring-pressed collar, which is moved along the spindle when the weft is nearly exhausted to allow a pivoted hook to project beyond the shuttle side. When the shuttle enters the box, the hook acts on one arm of a pivoted bell-crank lever to cause the other arm to cover a recess in the lay, and, as the lay beats up, to act upon a Z-shaped lever pivoted to the weft-hammer. An arm of the Z-sbaped lever is raised, and, on the forward movement of the weft-hammer, acts upon an arm secured to the shaft 19, which is thereby rocked.