Patent GB-190929808-A (GB)
Title: Improvements in Weft Replenishing Looms.
Inventor: HOLLINGWORTH EDWARD
IPC: D03D45/20
Filed: 1909-12-21
Granted: 1910-12-15
Abstract: 29,808. Hollingworth, E., [Crompton & Knowles Loom Works]. Dec. 21. Weft-replenishing mechanism; change-box motions.-In drop-box looms, magnetic feeler mechanism at the magazine side of the loom causes the preliminary rocking movement of the supporting-cradle in a compartment determined bv a pattern surface, which is supplementary to or independent of the shuttle-box pattern surface, the former pattern surface and a cam - operated lever controlling the subsequent release of the lowest bobbin in the compartment referred to, so that the movement nf the bobbin to a position beneath the transferrer may be timed to occur during that period of the movement of the lay which is usually utilized for the changing of the boxes. Mechanism is described for moving back the feeler after it has indicated substantial exhaustion of weft, and also mechanism for moving forwards the feeler after it has been moved back by a full bobbin. The magnetic feeler 34, Fig. 8, of the usual type normally remains in the path of a dagger 39, Figs. 7 and 8, pivoted on a lever 36, which is rocked away from the feeler at every other pick by a cam-operated connector 38, so that the return movement of the lever 36 is limited by the feeler diverting the dagger into contact with a stop 32<2>. When the weft is substantially exhausted, a ring on the weft-carrier attracts the feeler 34, which is thereby moved out of the path of the dagger, thus allowing the lever 36 to rock sufficiently to act upon a yoke-shaped part 41 of a verticallyextending hooked rod 40, Figs. 6 and 7, which is thus depressed against the action of a spring 42 and operates one of two levers 45, 46, the rod 40 being guided over one or the other of these levers by the slotted extension 43<1> of a swing- ing frame 43 mounted loosely on a shaft 28. This shaft is moved longitudinally by means of the independent pattern mechanism referred to and the swinging frame is moved laterally therewith since the hubs 43<2> of the frame are acted upon by the hub 70<1> of an arm or lever 70 fast to the shaft 28. When one of the levers 45, 46, for example the lever 46, is rocked, a downwardly - projecting hooked arm 46<2> is moved from its normal position over a corresponding spring - actuated vertical rod 48<a> connected to the corresponding cradle, thus allowing the rod to rise and the cradle to be given a preliminary rocking movement, whereby the lowest bobbin falls from an upper to a lower supporting-pin. A pin 49<a1> on the cradle which is thus rocked acts upon a projection 43<3> on an arm 43<4> on the frame 43, which is thus swung outwards and operates a spring-controlled pin 52 provided with a boss 66 carrying a wire 67 which guides a vertical rod 68 operated by a cam &c. This rod is thus moved into position underneath the lever 70 fast on the shaft 28, and, if the pattern indicates for the exhausted shuttle to be again used, the lever 70 is operated and the outwardly - extending arm 70<a> thereof depresses the raised rod 48<a>, thus rocking the cradle back to its normal position and releasing the lowest bobbin, which falls into position beneath the transferrer. If the pattern indicates for another shuttle to be used, the frame 43 is moved laterally away from the pin 49<a1>, the pin 52 is released, the lever 70, 70<a> is moved away from its position over the raised rod 48<a>, and the release of the bobbin is deferred until the exhausted shuttle has again to be used. When the pin 52 is operated, it extends through an opening in a plate 53 into the path of a rod 54 operated by a cam and lever, so that the plate 53 is raised against spring action and allows a spring 59 to operate an arm 60 carrying a hook, which releases the transferrer dagger 62 and allows it to be moved by a spring into the path of the lay bunter, whereby the transferrer mechanism is operated. 'When the dagger 62 is moved backwards, an upwardlyextending side plate 62<1> thereon engages the arm of a lever 74, which engages the headed end of the feeler and moves it back to normal position. A spring blade 36<a> on the lever 36 engages an arm 75<2> on the hub of a lever 75, which is thus rocked and engages the head of the feeler, thus yieldingly moving it forwards into normal position, after it has been moved outwards by engagement with a full bobbin. The change-box motion employed is of the mutilated-pinion and master-gear type.