GB388406A - Improvements in and relating to the twisting and winding of yarn - Google Patents

Abstract

388,406. Twisting yarns and winding upon beams or the like. BRITISH CELANESE, Ltd., 22, Hanover Square, London, and FULTON, S. M., c/o British Celanese, Spondon, near Derby. Aug. 24, 1931, No. 23812. [Classes 120 (ii) and 142 (iv).] Yarns, particularly artificial silk yarns which have little or no initial twist, are twisted by devices adapted to impart more than one twist for each revolution and simultaneously wound upon a beam or the like. The twisting-devices may be arranged with their axes horizontal, the delivery packages being held stationary, for example by means of weighted cradles with the centre of gravity below the axis of revolution of the device, or alternatively or additionally the packages may be arranged with their centres of gravity so disposed. As shown, the twisting-devices are arranged vertically and are of the kind described in Specification 369,293 provided with tension devices as described in Specification 388,078, the threads 15 passing therefrom through spacing-guides 27, a reed 28, and alternately over and under lease rods 29, through a further reed 30 and over a roller 31 to a swift or drum 35, from which they are subsequently transferred in the usual manner to a beam or beam section. The lease rods 29, reed 30 and roller 31 are mounted on a lever 32 maintained horizontal by the tension of the threads. The drive of the twisting-devices may be arranged so that some of the warp threads, preferably alternate threads, are twisted in one direction and the remainder in the other.