GB1354846A - Apparatus for detwisting or twisting fabric - Google Patents

Abstract

1354846 Finishing fabrics MOUNT HOPE MACHINERY Ltd 10 March 1972 [10 March 1971] 11301/72 Heading D1S Apparatus for detwisting or twisting a fabric web 10 bundled into rope form and travelling lengthwise comprises a hollow tube guide 12 through which the fabric is passable, means mounting the guide 12 about its major axis, and a plurality of protrusions 30 extending inwardly from interior surfaces of the guide 12 so that, in use, the protrusions 30 engage and turn the rope about its path of travel when the guide 12 is angularly displaced. As shown in Fig. 5, a rope-like bundle of fabric 10 is withdrawn from a bin 11 and passes through the detwisting guide 12, around a sheave 13, through a twist detector 15, through opening equipment 17 and around a guide roll 19. The detector 15 may be connected to control the operation of the guide 12. Alternatively, the detector 15 is omitted and the operations of the guide 12 are controlled manually by the operator who observes the bundle as it leaves the sheave 13. The sheave 13 may be replaced by a standard pot-eye. The guide 12 has a smooth interior surface and is mounted on a frame 14 by blocks 18 encasing ball bearings 20 or oiled wood bearings. A ring 25 is secured at the entrance of the guide 12 and supports an enlarged bell mouth formed of a ring 26 and curved supports 27. The protrusions 30, having apical surfaces of semi-ellipsoidal form, are formed on blocks 28 secured to the ring 25. The guide 12 is rotated by a motor (48), Fig. 4 (not shown), through a speed reducing drive, the motor (48) being operable either by the detector 15 or manually.