Patent GB-190515400-A (GB)
Title: Improvements in Looms for Weaving Tapestry Carpets and like Fabrics.
Inventor: HOLLINGWORTH EDWARD
Filed: 1905-07-27
Granted: 1906-05-31
Abstract: 15,400. Hollingworth, E., [Crompton & Knowles Loom Works]. July 27. Loom let-off motions; take-up motions ; warp tension, regulating.-In looms for weaving tapestry carpets, table-cloths, upholstery, and like fabrics in which there is a supplementary pattern warp, mechanism is provided for regulating the delivery of the supplementary warp in connexion with the movement of the take-up roller, and its tension in connexion with the movements of its heald. The shaft 39, Fig. 3, of the take-up roller 40 is driven through worm gearing from a shaft 1, on which are two ratchet-wheels 14, 15. Pawls 16, 17 are mounted on a pin at one end of an angle-lever 18, which is loosely mounted on the shaft 1 and is oscillated by a rod 19 connected to an arm on the fulcrum shaft of the lay. One or other of the pawls is moved by the operator out of engagement with its ratchet-wheel, according as cloth is to be taken up or let back. Through bevel-gearing, the shaft 1 drives a vertical shaft 4, Fig. 2, which in turn through bevel-gearing 5, 6 drives a bevelwheel 7 loosely mounted on a shaft 8. Another bevel-wheel 9 is loosely mounted on the shaft 8, and between the wheels 7, 9 on the shaft 8 is fast the hub 22<1> of a stud on which is loosely mounted a bevel-wheel 23 in gear with the wheels 7, 9. A worm 10 on the hub of the wheel 9 gears with a worm-wheel 11 on the shaft 12 of the delivery roller, round which pass the supplementary warps from the beam 42, so that the delivery roller is driven through the worm gearing 10, 11 and the bevelwheels 9, 23 from the wheel 7. A sleeve 24<1> is loosely mounted on the shaft 8 and has at one end a disk 25, which is provided with recesses to receive the end of a spring-actuated pin 26 having a head 26<1>. The pin is mounted to have longitudinal motion in a roller 27 fast on the shaft 8, and when the pin is engaged with or disengaged from the disk 25, the sleeve 24<1> is fast or loose on the shaft 8 respectively. A shaft 33 is driven through worm gearing 35, 35 from the shaft 4, and has mounted upon it a spurwheel 32 in gear with a spur-wheel 30, which in turn gears with a spur-wheel 24 on the sleeve 24<1>. When the sleeve 24<1> is fast on the shaft 8. this shaft is driven and causes the bevel-wheel 23 to revolve round the bevel-wheel 7 in the same direction as that in which the wheel 7 rotates, so that the speed of rotation of the wheel 9 and of the delivery roller is thereby diminished. The relative speeds of the take-up roller and the delivery roller can be regulated by changing the spur-wheel 32, the wheel 30 being mounted in adjustable bearings to permit the wheel 32 to be changed. The shafts 1, 8 are both provided with hand-wheels, and frictional gearing may be used instead of toothed gearing. On one of the journals of the beam 42 is fast a grooved pulley, around which passes a band connected at one end to a stationary hook, and at the other end to a spiral spring connected to the hook, so that drag is given to the beam 42. From the delivery roller the supplementary warp passes over a roller which is held in frictional contact with the delivery roller by its journals being supported on the upper edges of inclined arms. The warp then passes round a tension rod, which is carried by the lower end of a pivoted lever, of which the upper end is connected to an arm on a rock-shaft. Another arm on the rock-shaft is pivotally connected by a link to the upper edge of the supplementary warp heald. As the heald is moved up and down, movement is communicated to the tension rod to regulate the tension on the supplementary warp.