Patent GB-190413831-A (GB)
Title: Improvements in and relating to Automatic Looms.
Inventor: BRIOT ALBERT
Filed: 1904-06-18
Granted: 1905-06-15
Abstract: 13,831. Briot, A. June 18. Loom shuttles, changing bobbins and the like in, automatically; stop-motions; shuttles; weft, cutting. -The full cops with their spindles or tongues are stored in a stationary magazine having vertical guides 10, Fig. 1, of adjustable length, the guide in which the spindle &c. points rest being trough or U shaped, while the other guide is similarly, or rectangularly or otherwise, shaped according as the cop-tongue head is round or formed as shown in Fig. 5 &c. The cops are normally supported by the semicircularly-recessed upper ends of arms 6 of a feeding-device, and a bracket 8 having a guide bar or rib which receives the cop tongue heads. The arms 6, connected by a web 7, are carried on a shaft 3 and fixed thereon by a spring-pressed clutch. Each cop tongue is held in position in the feeder by spring-controlled fingers 9. When the weft fork is moved, the shaft 3 is rotated by lever-and crank mechanism, and the feeding-device assumes a horizontal position ready for delivering a full cop through the aperture 1, Fig. 3, of the shuttle box, on the beat-up, the empty tongue being at the same time expelled through the rear 2. Spring-pressed rests or detents 11, secured in brackets 13 on the horizontal cross-bar of a frame 4, normally forced backwards out of the way by the feeder-arms, are now pressed forwards, and support the remaining cops in the magazine. The shuttle is open at the back and front, and similar openings are made in the front wall 1 and in the swell at the back 2 of the shuttle box, a short swell f, Fig. 8, serving as a check to the shuttle. The cop is held by a lozenge or diamond shaped spring gripping-device, comprising four elastic branches a, a', b, b<1>, Fig. 6, between which the lozenge-shaped cop-tongue head is held. The weft is drawn off from the interior of the cop, and the spindle is, for this purpose, provided with a longitudinal slot and perforations at the end. To stop the loom if the shuttle is not properly positioned in its box for cop-changing, a feeler lever 15 is pivoted on the feeder. Any obstruction by the shuttle if wrongly positioned, or by the spring- controlled block, plate, or slide 18 which is pushed back by the incoming shuttle, forces back the lever 15 into contact with the knocking-ofF lever L, and stops the loom. A spring r on the feeler 15 expels the empty tongue or spindle if the shuttle is properly positioned. On the rotation of the shaft 3, an arm l<2> thereon, furnished with an antifriction bowl, comes in contact with an arm l loose on a shaft A, and, as the lay moves, forces it towards the shuttle box. By means of a spring R, an arm l<1> carrying the picker 35 is actuated, and the shuttle is pushed slightly inwards until the edge of its opening abuts against the feeler 15. During the return stroke of the lay, the spring gripping-device secured to the shuttle holds the new cop so firmly that it is pulled out of the fingers of the cop feeder. To stop the loom if the cop-changing device should be actuated twice in succession, the lever carrying the weft fork is provided with a pin 21, Fig. 7, on which a plate 24, having a finger 24<1> and a notch 25, can rotate. A weak spring 23, abutting against one side of a square projection 22 on the plate 24, normally prevents rotation of the plate 24. When copchanging occurs, the pin 21 is moved to the left, the notch 25 comes in contact with a stop 27 on the breast beam &c., and the plate 24 is rotated so that the finger 24<1> becomes horizontal. If the weft fork comes into action again during the next pick, the finger 24<1> comes in contact with the lever 28, and stops the loom. Otherwise, a pin 29 on the hammer of the weft-stopping motion engages with the notch 25 and turns the plate 24 back to its normal position. To allow the weft to be cut off close to the edge of the cloth, while using an ordinary reed, the reed is used to cut off the weft. An arm 5, Fig. 12, on the shaft 3, on the rotation of the latter, strikes a bolt 54 which encounters a lever 53 on a shaft 50, which has an adjustable sleeve 51 carrying blades 52 fitting through the reed dents, the blades then severing the weft of the old cop. On the return of the lay, a spiral spring on the shaft 50 returns the sleeve 51 and blades 52 to their initial positions. The arm 57 also returns to its initial position, a pawl 55 engaging a recess 56 retaining the bolt in its forward position so that, during the next forward movement of the lay, it may cause the actuation of the cutting-devices for cutting the weft of the new cop. When the lay reaches its foremost position, an arm 58 attached thereto actuates the pawl 55 and lifts it out of engagement with the recess 56, a spring then returning the bolt to its inoperative position, where it remains until the shaft 3 is again turned.