Patent GB-190515867-A (GB)
Title: Improvements in Looms for Weaving and in Means for Automatically Changing the Cops in Shuttles used in such Looms.
Inventor: JACKSON ARTHUR JAMES
Filed: 1905-08-03
Granted: 1906-08-02
Abstract: 15,867. Jackson, A. J. Aug. 3. Loom shuttles, changing bobbins and the like in, automatically ; stop-motions.-Relates to automatic cop-changing mechanism, particularly for use in connexion with the shuttles described in Specification No. 12,129A, A.D. 1905, each shuttle having a removable tongue, of which the butt end has a bead adapted to fit within a chamber formed in the shuttle and to be held therein by a spring-pressed ball. The shuttles are also provided with self - threading devices, which may be of the type described in Specification No. 12,129B, A.D. 19U5. When the weft fails, a shaft 10, Fig. 3, is rocked by a lever connected to the carrier of a weft fork, or by weft-feeler mechanism, and acts through a lever 18 and a rod 19 to oscillate, against the action of a spring, a pivoted lever 20, which moves an elbow-lever 21 pivoted on a slide 25. A bracket 22<a>, adjustably secured to an extension 21<a> on the elbow-lever, is moved into the path of a roller on a spur-wheel 24 on the loom driving-shaft, and by the action of the roller on the bracket the slide 25 is moved forwards against the action of a spring, the slide being suitably guided on a rail 26. Through a rod 26<a> and a link 28, the slide operates a pivoted ejector f. The shuttle tongues a carrying fresh cops are suitably supported in a magazine c mounted on the breast beam, and the lowest cop is held up by a spring-actuated finger d. The ejector f, when operated, forces the lowest cop from the magazine and transfers it to the shuttle, the lay being then in its forward position. The fresh cop is passed below the picker spindle into the shuttle (means being provided for guiding the cop), and forces the empty tongue out of the shuttle through openings in the bottom of the shuttle and of the shuttle box. When the shaft 10 is rocked, an arm upon it acts through a loaded lever to place a cam-piece pivoted on the breast beam into position to act upon a cam-piece p, Fig. 13, on a spring-pressed sliding spindle j, which is mounted on the front of the shuttle box. If the shuttle has entered too far into the box, it is moved to its proper position to receive the fresh cop by the picker i, which is acted upon by a cranked end o of a rod n connected to the spindle j, when the spindle is moved into the position shown in dotted lines by the action of the cam-piece on the breast beam upon the piece p. If the shuttle has not entered far enough into the box, it is moved to the proper position by a finger z on a lever q engaging the end of a slot in the shuttle. The lever q is suitably guided and is connected by a link r to a crank s on a rod t, which is rocked by a finger on the spindle j acting upon a crank n on the rod. In order that the cop-changing mechanism may be put out of action, and that the loom may be stopped when the weft fails, the rod 19 is connected to the lever 20 by passing loosely through a sleeve 33 on the lever 20, being normally secured therein by a setscrew 34. When the set-screw is loosened, the rod 19 will slide in the sleeve 33 without affecting the lever 20. An arm is adjustably secured to the pin which connects the weft-fork carrier to the lever on the shaft 10, and when the cop-changing mechanism is in operation, this arm is turned vertically upwards on the pin. When the cop-changing mechanism is put out of operation, the arm is turned down to a horizontal position, and, when the weft fails, acts upon the ordinary weft-fork lever, which disengages the shipper-lever from its notch and stops the loom. According to the Provisional Specification, a rod connected to the weft-fork lever passes loosely through a sleeve on a part adapted to effect the stoppage of the loom. The rod is secured to the sleeve by a set-screw if the loom is to be stopped when the weft fails. The invention is described as applied to an overpick loom, but it can also be applied to an underpick loom.