Patent GB-190925951-A (GB)
Title: Improvements in and connected with Magazines for Weft Replenishing Drop Box Looms and in Means for Selecting and Releasing the Bobbins or Filling Carriers.
Inventor: HOLLINGWORTH EDWARD
IPC: D03D45/20
Filed: 1909-11-10
Granted: 1910-10-06
Abstract: 25,951. Hollingworth, E., [Crompton & Knowles Loom Works]. Nov. 10. Weft-replenishing mechanism; change box motions. - In weft-replenishing looms with a stationary multi - compartment magazine, containing bobbins, bobbin cases, or shuttles corresponding to the different shuttles in the dropboxes, a series of magnetic feelers 17, 17<1>, Fig. 1, are used, each corresponding to a certain shuttle in the dropboxes, the usual horizontal rod 24, Fig. 2, actuated by the feeler mechanism on substantial weft-exhaustion causing the actuation of the transferrer mechanism, while a pin on a collar on this rod 24 rocks a slotted lever 71 and raises a vertical rod 69, Figs. 1 and 2, which actuates the mechanism for releasing a bobbin &c. from the required compartment, this mechanism being controlled from a pattern chain or from the drop-boxes as described below. The magazine comprises a plate provided with guideways having inwardly-extending lips or flanges to embrace the shoulders of the heads of the bobbin spindles, the guideways for the bobbin tips being open from the top to the bottom so that the weft ends may pass out therefrom to an elliptical thread - guide or holder 48, which causes the thread of the transferred bobbin &c. to be correctly tensioned. A bobbin released from one of the magazine compartments falls unobstructed to the single guideway or discharge shoot 39<2>, where it is retained in position underneath the transferrer by yielding means. The magazine compartments may be straight or curved, and in the former case bobbins may be supplied thereto by using a bobbin holder consisting of a handle portion 41<a>, Fig. 6, and parallel strips 41<b> with spring ends 41<b1>, this holder being placed in the compartment to be filled and the top bobbin being held down while the holder is withdrawn. The bobbins are supported by rods or pins 77, 77<1>, Figs. 1 and 2, extending outwards through recesses in the magazine and carried by the arms 75 of levers provided with arms 75' connected to bolts 78, which are normally pressed upwards by springs 80. A rod 63 is caused to slide longitudinally by means of a spring-actuated lever, which engages an annular groove in a bar or head in the rod 63 and is connected by a flexible connexion and lever mechanism to the vertically-moving box rod, so that an actuator 67 on the rod 63 is caused to take up a variable position with regard to the bolts 78 situated below it, according to the position of the dropboxes. When the rod 69 is raised, it engages an arm 68 on the rod 63, and rocks this rod, whereupon the actuator positioned as described above, depresses one of the bolts 78 and thereby rocks the corresponding lever 75, 75', the lower pin 77<1> moving outwards to release a bobbin from the compartment, while the upper pin 77 moves inwards to retain the next bobbin and at the same time acts upon and aids the descent and release of the lowest bobbin. On return of the parts to normal position, the bobbin supported by the rod 77 is released and falls down the compartment with the superimposed bobbins, until it is supported by the rod 77<1>. When the rod 24 is actuated, it is moved into the path of a cam-actuated vertically-moving rod 25 and a vertical movement is thereby given to a plate 29, which actuates a pivoted arm 30 and link 31, thereby allowing a spring to raise a finger on the transferrer into the path of the lay bunter. The drop-boxes supported by the rod 10 are connected with a box lever 12, operated by a change-box motion of the type comprising a master gear and two mutilated pinions.