Patent GB-190428770-A (GB)
Title: Improvements in the Automatic Weft Replenishing Mechanism of Looms.
Inventor: RANSFORD ROBERT BOLTON
Filed: 1904-12-29
Granted: 1905-11-02
Abstract: 28,770. Ransford, R. B., [Northrop Loom Co.]. Dec. 29. Loom shuttles, changing bobbins in, automatically. -Relates to the handling of the weft ends, and the consequent construction of the weft-carriers or bobbins, the magazine, and the actuating- mechanism of weft-replenishing looms of the type described in Specifications Nos. 10,633 and 10,635, A.D. 1891, Nos. 18,611 and 22,939, A.D. 1894, and No. 21,220, A.D. 1904. The magazine D, Fig. 21, has side plates provided with internal ribs l which form channels for holding and guiding the weftcarriers. The magazine is pivotally and removably mounted on a fixed pivot rod by means of hookpieces, and it may be filled when removed from the loom, the bottom being then closed by a removable slide-piece. Each weft carrier A, Fig. 26, has a butt with rings a, and a removable weft-end holder B, which has a central pin inserted into a cylin drical hole in the axis of the carrier. The weft from the cop is passed along a slot c and is wound round the part d. The magazine is mounted between fixed side plates E, F, Fig. 19, having flanges I, J which support the weft-carriers when the magazine slide-piece is removed, and have extensions L, M forming guideways for the weftcarriers. When the magazine is full, it is held in position with the first stack of weft-carriers above the guides L, M by means of a detent q on an escapement feeler N engaging the front adjacent rib l, and the lower weft-carriers drop from the magazine upon the guides L, M, where they are held by a stop and spring fingers. The feeler N is pivoted on the stud e of the transferrer C, and is yieldingly connected to the transferrer by a spring plunger o, Fig. 21. When the transferrer is moved downwards, in the ordinary manner, to transfer the lowest weft-carrier to the shuttle, the plunger o tends to depress the feeler N, but the latter is normally held up by one of the weft-carriers on the guides L, M. When the first stack of carriers is nearly exhausted, there is no weft-carrier in position to hold up the feeler, so that the feeler is depressed, and the magazine swings forward by gravity until one of a series of teeth n on the outside of the magazine meets a pallet r on the feeler and the magazine is stopped. When the transferrer is raised again, a projecting pin p upon it lifts the feeler, and the pallet r moves above the tooth n. The magazine then swings forward until the next rib l meets the raised detent q, and the magazine is held with its next stack of weft-carriers in active position. The lowest weft-carrier in the guide-shoot under the magazine has had its weft-end holder removed, and the weft-carrier above it has its weft-end holder engaged by a displacer P, Fig. 26, which is provided with flanges t, u to act upon the weft-end holder. The displacer is secured to a rod R, Fig. 19, which slides within a hollow sleeve T on the outer standard F, and is surrounded by a spring inside the sleeve. A pivoted spring latch X normally engages a lip y on the displacer, which is thus held in against the action of the spring. A pivoted actuator Q has a tongue Y below the latch X, and an arm embraced by a slot in the transferrer C. When the transferrer is moved downwards, it acts upon the actuator arm, and the tongue Y presses upwards on the latch X, which is thereby moved to free the displacer. The displacer is moved outwards by its spring, and removes the weft-end holder from the weft-carrier, the holder being projected along a guide-shoot into a receptacle. A washer 34 on the rod R lessens the shock. When the transferrer is raised again, a bunter on the actuator co-operates with an abutment on the displacer and moves the latter inwards, where it is again engaged by the latch X. The spring of the transferrer is sufficiently strong to effect this operation. When the weft-end holder is ejected, it carries with it the end of thread, which unwinds from the carrier and is guided by a slot in the holder guide-shoot. Accidental movement of the displacer is prevented by a pivoted spring-controller detainer. When the weft-carrier is transferred to the shuttle and the latter is picked, the holder yields to prevent shock, the shuttle being automatically threaded in the usual way. The magazine may, if desired, be permanently mounted on the loom.