Patent GB-190623350-A (GB)
Title: Improvements in and relating to Filling Replenishing Mechanism for Looms.
Filed: 1906-10-22
Granted: 1907-07-18
Abstract: 23,350. British Northrop Loom Co., [Northrop Loom Co.]. Oct. 22. Loom shuttles, changing bobbins and the like in, automatically. - Relates to the rotatable bobbin in, magazines of looms of the Northrop type. The breast beam has mounted upon it a stand of inverted-T shape, and an horizontal stud carrying the end plates of the magazine is secured in a hub on the upright portion of the stand. On account of the shape of the stand, the greater portion of the adjacent end of the magazine is exposed. On the lower rear edge of the stand is provided a short flange or guard a', Fig. 2, having its edge 7 grooved to co-operate with the usual rings on the head of the bobbin b<x>. Between the edge 7 and a shelf a<2>. on the stand is the discharge throat for the bobbin. A piece of stiff spring metal 8 is bent, as shown, and is secured to the shelf a<2>, so that it forms a yielding stop for the bobbin head, which rests in a shallow seat 10 therein before transfer. When the usual transferrer f<1> pushes the bobbin from the magazine into the shuttle S, the stop can yield slightly in the direction of motion of the lay, so that the transfer is effected with accuracy and ease. The peripheral portion 13, Fig. 1, of the headsustaining plate is provided with open - ended pockets 19 to receive the heads b<2> of the bobbins, the inner end of each pocket being deeper than the outer end. The tip-sustaining plate 35 of the magazine is provided with the usual pivoted spring- controlled tip-holders 42, which are, however, provided with a stop 45 to engage the bridge 39 when the tip-holder is pushed outward a predetermined distance. The stop prevents the tip from being pushed past the seat 43, and also prevents the insertion of the bobbin with its head resting between two pockets 19. The tip-seats 43 are nearer the axis of the magazine than the pockets 19, so that the axis of each bobbin is at rightangles to the bottom 20 of the pocket 19. The bobbins are thereby held very securely, and rotation of a bobbin on its axis is prevented by the friction between its head and the bottom of the pocket. The weft from each bobbin is passed round a projection 44 on the tip-holder, and back over a flange 21 on the head-sustaining plate, a loop t<10> being formed to afford sufficient slack thread when the transfer takes place. Each weft end is passed through a notch 22 in the flange 21, and is held by a holding-device, which comprises an overhanging fixed member 26, Fig. 8, and a movable spring-controlled member 24. The member 24 has an annular lip 25, between which and the member 26 the weft is gripped. By means of a stud 28 projecting through the member 26, the member 24 can be pushed manually out of contact with the member 26. In the construction described, two ends of weft are held by each holding-device, and are led thereto between flanges 32 on the plate 13. Bevelled flanges 33 at rightangles to the flanges 32 prevent the ends of weft from being led to the wrong holding-device. When the bobbin transfer takes place, the loop of weft is released from the projection 44, and the rear side of the released loop is prevented from catching the guard a', Fig. 2, by the edge of the guard being inclined outwardly and rearwardly at 7x from the edge 7. The flange 21 on the head. sustaining plate 13 holds the weft end away from the stop 8, and the head discharge-throat opens out towards the stand to provide ample room for the hanging ends of weft.