Patent GB-191322757-A (GB)
Title: Improvements in Mechanism for Automatically Changing Shuttle Bobbins in Looms having several Shuttle Boxes.
Inventor: PALLARES PABLO FARRE
IPC: D03D45/20
Filed: 1913-10-08
Granted: 1914-10-08
Abstract: 22,757. Pallares, P. F. Oct. 8. Shuttles, changing bobbins and the like in, automatically.-In bobbin - changing mechanism for looms having several shuttle boxes, each series of bobbins is carried by a frame 1, Figs. 3 and 4, having side guides' 2, 3 and exit orifices 4, 5 normally closed by springs 10, 11. The frames are each provided with a roller 12, and are slidably mounted in a framework 15, Figs. 7 and 8, which is oscillated about a pivot 22 by lever mechanism 21, 79 connected with the drop-box frame, so that, according to the shuttle in action, one or other of the rollers 12 is placed beneath a projection on the arm 24 of a lever 24, 25 provided with a spring- controlled arm'or abutment 27. When a shuttle is substantially exhausted, by means of the weftfeeler mechanism described below, a lever 75 is oscillated and a resilient plate 47 thereon depresses a bar 42, pivoted on a lever 33, into the path of a notched member 43 on the lay. The lever 33 is thereby oscillated and acts on the abutment 27, whereby the lever 24, 25 is oscillated and a particular frame 1 is lowered against spring action, so that the lowest bobbin therein is moved into the path of a fork 32 on a lever 37 connected by a link to the lever 33. The fork engages the lowest bobbin and transfers it into the empty shuttle, resilient parts 8, 9, Figs. 3 and 4, and 103<a>, 103<b>, Fig. 8, controlling the bobbin during transference, while a guide 103 also acts to prevent the bobbin from falling. In a modification, the framework 15 is stationary, and a lever 107, 109, Fig. 11, is oscillated in accordance with the drop-box movements, so that an abutment on a spring-controlled bar 113 sliding in a guide 112 on the arm 109 is moved over one of the rollers 105 on axles 104 fixed to the frames 1. The bar 113 has a rib 118 to engage in one of the grooves in a fixed segment 120 and bas a roller which is engaged by the arm 24 when the lever 24, 25 is rocked, the bar 113 being thus depressed and lowering a particular frame 1. The weft-ends from the bobbins in each frame are attached to spiders on two arms. In the weft-feeler mechanism, forks 48, Figs. 2 and 7, are carried by spring-controlled levers 49, 51 having tongues 52 extending into an orifice 58 in a member 56, whereby all the forks 48 except one are withdrawn from the shuttles. On the occurrence of substantial exhaustion of weft, one of the forks 48 moves inwards, and-the corresponding lever 49, 51 rocks sufficiently to allow its arm 51 to engage, on the beat-up, with an arm 59 in a shaft 60. ' The shaft 60 is thus rocked and, by lever mechanism 61, 62, a lever 64 is also rocked. A plate 66 on the lever 64 then moves a pawl 67 on the lever 75 into the path of a lever 69 oscillated from a cam on the loom shaft, whereby the lever 75 is oscillated. A part 94 of a spring- controlled cam-actuated lever 88, 90 acts on the tongue 52, and thus oscillates the corresponding lever 49, 51 to withdraw the corresponding fork when the shuttle is entering or leaving the box and also when the shuttle is at the other side of the loom.