Patent GB-190327295-A (GB)
Title: Improvements in Automatic Shuttle Changing Looms for Weaving.
Inventor: SOWDEN ARTHUR
Filed: 1903-12-14
Granted: 1904-11-17
Abstract: 27,295. Sowden, A. Dec. 14. Loom shuttle-changing mechanism; shuttle boxes.-The shuttle-changing mechanism acts on the drop - box principle, the shuttle box having two cells, of which the upper cell 13 is normally operative, and the lower cell 14 acts as a conveyer for transferring a discarded shuttle to a receiver. The cells 13, 14 are mounted in slides at their ends, and are fixed upon a rod 27, which is free to slide in a bracket 28, and has a boss 31 connected by a link 32 to a lever 33 mounted on a shaft 34. The shuttle swell 16 is provided at its upper edge with pieces which project above the bottom of the upper cell 13 when the box is in its top position for receiving a shuttle 18 from the magazine 1. When a fresh shuttle is required, mechanism actuated by any ordinary weft feeler or the weft fork partially rotates a shaft 60, so that, through an arm 59, a rod 58, and a crank-arm 57, a crossshaft 56 is partially rotated, and a finger 55, fixed to it, depresses a crank-arm 54 and partially rotates a shaft 53 to which is fixed a switch lever 48. The lever 48 engages cam projections in the boss of a nogging-wheel 46 which is free to slide on the tappet shaft 47. When the shaft 53 partially rotates the lever 48 moves the wheel 46 into engagement with a nogging-wheel 45 on a shaft 44, which is thus geared to the tappet shaft. The movement of the lever 48 is regulated by a fixed pin 50 passing through a slotted arm 52 projecting from the boss of the lever 48. When the shaft 44 is rotated, an eccentric 43 upon it acts through a suitable connection to oscillate outward a lever 42 so that, through a rod 41, a lever 38, mounted on the shaft 34, is drawn backward. A bowl 37 on the lever 38 acts through a curved lever 36 to raise the lever 33, by which the cells 13, 14 are raised. The lever 36 is pivoted to the lever 33 at one end, and the other end is also connected to the lever 33 by a spring-controlled rod 39. This device constitutes an escapement which will give way in case of undue pressure, and thereby avoid breakage of parts. When the cells are raised, and as the lay moves backward, a bowl 25 on one of a pair of pivoted catches 23 passes over a cam-shaped lever 26 on the front of the magazine 1, so that the catches 23 are lifted to allow the fresh shuttle from the magazine to enter the cell 13. The magazine 1 is mounted on a pivoted rod 2, and its upper end is yieldingly held by studs 5 engaging in notches 10 in pivoted arms 6, which are drawn downward by springs 11. The mechanism for transferring a shuttle from the magazine to the cell 13 is similar to that described in Specification No. 5936, A.D. 1903, and comprises a carrier 71<A>, pivoted arms 71, and a catch lever 62 which is raised by a finger 61 on the shaft 56 into engagement with a rocking lever 63, actuated by a tappet 65 on the tappet shaft. The carrier 71<A> is returned to its inoperative position by a rod 71<B> provided with a spring escapement 72, and working through the end of a lever 73 pivoted at 74 and operated by the eccentric 43. The spent shuttle from the opposite box is picked into the cell 14, when the cells are raised, and is ejected down guides 20 into a receiv. ing-box by the momentum of the lay, when the cells have returned to their normal position. In the Provisional Specification, means actuated by a cam or bowl on the lay are described for allowing a fresh shuttle to be transferred from the magazine to the shuttle box. Looms, weft-cutting in; temples.-To cut remnants of weft left by discarded shuttles, a pivoted cutter 78 is operated at any desired interval by a rod 81, levers 82, 84, and a cam 85, and cuts the weft as it passes over a grooved or plain plate secured to the temple 77. In the Provisional Specification, it is stated that another cutting-device is preferably mounted on the lay, and that the weft may be drawn over the cutting-surface by means of a hook or the like operated from any going part of the loom.