Patent GB-190907205-A (GB)
Title: Improvements in Automatic Mechanism for Changing Bobbins, Spools, and the like in the Shuttles of Looms for Weaving.
Inventor: ZELL GIACOMO
IPC: D03D45/20
Filed: 1909-03-25
Granted: 1910-06-27
Abstract: 7205. Zell, G. March 25. Shuttles, changing bobbins and the like in, automatically; weft, cutting.-A vertical rod or shaft is provided with a bridge-shaped arm 1, which may be actuated by the weft-fork lever g, and with a second arm m, which may b e actuated by the weftfeeler mechanism as described below, so that, if the weight fails or the bobbin &c. a<1> is substantially exhausted, the vertical rod is rocked and a third arm l<1> thereon actuates elastic arms 45, Figs. 1 and 12, and afterwards depresses a pressing-device 31. The arms 45 remove a bobbin or spool &c. 20 from the magazine 16 and carry it into position beneath a pressing-device 31, which is then depressed and presses the fresh bobbin &c. into the shuttle, the bobbin previously therein being ejected through an opening in the lay sole. The arm 1<1> operates a cord 2 connected to the annular part 4 of a lower arm 10 on a shaft 38, which is thereby rocked. An eye on the upper part of an upper arm 10 on the shaft 38 then compresses a spring 65 bearing against a collar 65<a> on a rod 64, which is connected to an angular piece 12 pivoted on a stud on a bracket on one of the lay-swords c. When the lay moves back, the angular piece 12 is sprung behind an adjustably-pivoted arm 39 provided with a projection 44, which is normally engaged by the finger 67 of a spring-actuated lever 23. When the lay now moves forwards, the arm 39 is carried therewith, thus withdrawing the projection 44 from the finger 67 and allowing the lever 23 to be moved upwards into engagement with a cam 26 on the tappet-shaft d. By the movement of the lower arm 10, a shank 8 is placed into position to rock a lever 11, which operates a rod 14 against spring action, thereby rocking a lever 15 and levers 15<1> carrying the elastic arms 45, provided with special devices for engaging the bobbins &c. 20. The arms carrv a spool into position beneath the spring- actuated presser 31, which is pivoted on the arm 39 and is provided with a hooked shank 29 When the lever 23 is raised, as described, the shoulder 28 thereof engages the hooked shank 29 and, when the lever is then depressed by the cam 26, the presser is also depressed and presses the fresh spool from the arms 45 into the shuttle. The weft ends from the bobbins 20 pass through a side slot in the magazine, and are attached to a chain 68, which is provided with spikes and is mounted on rollers and may be rotated by hand or mechanically. The weftfeeler mechanism comprises a spring-actuated lever b<1> provided with a front part 46, which engages the weft on the bobbin &c. a<1>, the lever b<1> being thereby rocked so that a stud d<3> acting on the inclined underpart of a shank h, pivoted to a lever l, raises the shank from a second catch of the weft-fork hammer f. When the weft is substantially exhausted, the stud d<3> is not moved sufficiently to raise the shank h from the weft-fork hammer; the lever l is therefore rocked, and a stud thereon engages the arm m. The weft-cutting devices comprise a blade R fixed on the lay and a blade R<1> on the arm 60 of a spring-controlled three-armed lever D, Q, 60. The curved cutting-edges of the blades R, R<1> are furnished with laterally-curved leading portions, and the blade R<1> is normally held out of action by a catch-lever H. This lever is released by lever mechanism connected to the rod 14 when this rod is raised, and a spring acting on the arm D rocks the lever D, Q, 60. The blade R<1> is then moved into position to coact with the blade R to cut or shear the weft ends from the spent and fresh bobbins &c. respectively, after which a crankpin Q<2> on an arm Q<1> on the tappet - shaft d raises the arm Q and rocks the lever D, Q, 60 into its inoperative position, wherein it is then retained by the catch-lever H. The loom is stopped if the spool &c. does not enter the shuttle readily and is trapped, thereby causing the weft-fork mechanism to be twice operated during two successive forward movements of the weft-fork hammer f.