Patent GB-190811386-A (GB)
Title: Automatic Shuttle Changing Mechanism for Looms.
Inventor: TOYODA SAKICHI
Filed: 1908-05-26
Granted: 1909-05-26
Abstract: 11,386. Toyoda, S. May 26. Loom shuttle-changing mechanism ; shuttle boxes; checking shuttles; picking-sticks, checking; pickers. -The reserve shuttles in guideways in guides 49, 50, Fig. 5, on a rod 28, about which the lay is rocked, are supported by a plate 58. This plate is provided with a boss linked to a spring-pressed lever, which normally tends to raise the plate and shuttles, and is depressed by a bowl on another lever actuated by a handle to lower the plate, so that the shuttles may be fed into the magazine through an opening 57. Rods 72, 73, Figs. 4 and 5, extending from hubs or bosses on the rod 28, carry supports 74, 75 for the active shuttle, the upermost reserve shuttle bearing against the inclined walls 78, 79 of the supports, which have spring - pressed rods 80, 81. Inserting - members 88, 89, which are pivoted to bars or levers 86, 87, have projections 90, 91 pressed underneath the uppermost reserve shuttle by springs 92, 93. The bars 86, 87 are respectively mounted on bars 94, 95 on a rock-shaft 9. When the weft fails, this shaft is rocked in clockwise direction by special weft-fork like mechanism, described below, and the bars 86, 87 are raised and feed the uppermost reserve shuttle into the shuttle-race, the members 74, 75 being moved outwards. By means of a pin 84, a plate 39<1> is retracted against spring action from its overhanging position, so that the formally active shuttle may be raised out of the race, after which it is supported by the plate 39<1> and held in engagement with arms 98 on a member 96. The shuttle is subsequently removed when the lay beats up by the levers 99, mounted at 100 on a stationary part and having jaws 101 for the shuttle. The levers 99 enter recessed parts of the member 96. The shuttle - race is formed in a member 29, and has a front wall 32. Its base is provided with an opening 33, Figs. 4, 5, and 9, for the reserve shuttles. A bar or lever 34, pivoted on a stud 35 and reduced at its front so as to overlap a reduced portion 37 of the rear wall 38 of the shuttle-race, is projected by a spring 39 into the shuttle-race, so as to check the shuttle before it comes into contact with the picking-mechanism. The picker 43 is provided with an extension 42, operated in a space 25 between the plate 39' and member 34. The picker is operated by a pickerbar 44 on a picking-spindle 45. The picker-bar is checked by leathers in a frame 105, Figs. 4 and 9, which has extensions 106, 107, mounted in guides 108, 109. These guides also support a guide-rod 110 for the picker. The extension 106 has a pin 111 extending into a cam-slot in a bar 113 mounted on the arm 94, in order that, when the shuttlechanging occurs and the rock-shaft, 9 rotates in a clockwise direction, the bar 113 is raised, the frame 105 is moved to the left, and a spring 47, Fig. 5, connected to the picker-bar 44 is enabled to move the picker-bar and picker to the left so that a reserve shuttle can be raised into the race. The mechanism for bringing the shuttle - changing mechanism into action consists of a comb 23, Fig. 3, mounted on the reed 24 and having projections enteriog openings in a comb 12, which has its teeth connected at 13 and is mounted on a bar 15 secured to a stationary part. When the weft is intact, it extends between the combs 12, 23, and, on the beat-up, swings the comb 12 rearwardly. The latch end 20 of a lever 17, oscillated by lever mechanism 21, 3 and a cam 2, is thus free to swing upwardly. The bar 3 then falls, its curved portion 8 resting on the bottom of a slot 11 in a lever 10 on the shaft 9 and its stop 7 passing freely through the slot 11. When the comb 12 is not moved by the weft out of the path of the latch 20, the lever 17 prevents the bar 3 from falling, and its stop 7 engages the lever 10 and rocks the shaft 9.