Patent GB-190709659-A (GB)
Title: Improvements in Loom Mechanism for Inserting Separate Weft Threads, such as Horsehair and the like in the Shed.
Inventor: LAKE HAROLD WILLIAMSON
Filed: 1907-04-25
Granted: 1908-04-23
Abstract: 9659. Lake, H. W., [Schnek, H.]. April 25. Shuttleless looms; weft, supplying; weft-carriers. -A single horsehair or like separate weft is taken from a bundle by a suitable device, and its end is carried transversely across the path of the weftcarrier and is held in this position by a clamping- device, so that the carrier during its pick engages the hair and drives it loop-fashion into the shed, whereupon the hair, properly arranged in the shed, is released by the clamping-device. The hairs a, Fig. 1, are drawn through a number of U-shaped wires 18 arranged on the lay, and are pressed towards the reed by spring-pressed plates 19 ; or the hairs may be arranged in a vertical receptacle, in which they are kept down by one or more loose weights. The withdrawing-device may be of any suitable construction, and may comprise a needle 20 provided with a pivoted arm 22, which is pressed downwards by a spring. The needle 20 is adjustably mounted on an arm 37 on a rod 36, which is pivotally connected to a centrally-pivoted lever 35. When the lay moves forwards, the lower end of the lever 35 strikes a stop 38, so that the needle 20 is inserted into the hair receptacle. The arm 22 is raised by the hairs or by a fixed part of the receptacle, and when the device is withdrawn a hair is retained between notches in the parts 20, 22 until a prolongation of the arm 22 strikes a stop 44, when the hair is released. The clamping-device comprises jaws 25, 26, Fig. 8, the jaw 25 being pivoted to the jaw 26 and having a second arm acted upon by a spring 27, which tends to close the jaws. The jaw 26 is formed on a lever pivoted at 28 and pressed upwards by a stronger spring 29. The clamping-device is mounted on the lay with its jaws in the path of the needle 20, and when the lay moves forwards, a rod 30 is lowered so that its bent upper end opens the jaws 25, 26 and then lowers the jaws below the path of the needle 20 by compressing the spring 29. The rod 30 is normally held up by a spring, and its lower end is connected to a centrally - pivoted lever 32, which strikes a spring-pressed pivoted lever 40 as the lay moves forwards. The lever 40 is moved against a guide 39, and the end of the lever 32 then rides up the lever 40 and along the guide, so that the rod 30 is lowered. When the lay moves back, the end of the lever 32 is withdrawn from the guide 39, so that the rod 30 is free to rise. The jaws 25, 26 rise and are then closed to seize the hair, which has been withdrawn from the receptacle. The jaws 25,26 are given an angular shape to bend the hair held between them to bring it into the proper position in the shed without curvature. At each alternate forward movement of the lay, the stop 38 is withdrawn from the path of the lever 35, so that the needle 20 is not moved forwards. In a modified form of the apparatus, the clamping-device is arranged on the withdrawing-device, so that the two are able to move together but are operated independently in such a manner that the clamping- device secures the hair already held by the withdrawing-device. On the withdrawing-device are arranged jaws, against which a fork may be applied by a spring. Upon the insertion of the withdrawing-device into the hair receptacle, the fork is raised from the mouth of the withdrawing-device by a stop, and upon the return of the device, the fork is released, so that it clamps the withdrawn hair. The combined device is pivoted on the lay, and the hair receptacle is movably mounted on the breaat beam in such a manner that it is raised and lowered slowly by a cam.actuated lever, in order that the withdrawing-device may enter the receptacle at different places. The combined device is moved forwards and backwards across the carrier race during one stroke of the lay, and during the next forward stroke of the lay 'both devices are opened by stops secured to the breast beam. The weft-carrier 12, Fig. 17, is provided above its points 58 and preferably on the side next the reed with longitudinal projections, which preferably consist of bundles 59 of hair, and which, in conjunction with the points 58, form notches to engage the wefts. A number of bair receptacles, which may be connected with one another, may be arranged across the loom, and withdrawing and clamping devices are provided at each end of each receptacle, in order that several fabrics may be woven simultaneously, a weft being inserted in each fabric in succession by one weft-carrier.