GB1085052A - Improvements in or relating to textile apparatus - Google Patents

Abstract

1,085,052. False-twist apparatus. ERNEST SCRAGG & SONS Ltd. April 21, 1964 [April 30, 1963; June 11, 1963; Jan. 16, 1964; Feb. 20, 1964], Nos. 16883/63, 23185/63, 2076/64 and 7042/64. Headings D1D and D1F. False twist apparatus comprises a plurality of surfaces adapted to engage an advancing yarn, to move with the yarn in the direction in which the yarn advances and to move transversely of said direction. The surfaces may be rotating discs or moving belts which also revolve about an axis. In Fig. 1, there are two sets of discs 13, 14 respectively arranged one behind the other in circular formation; these rotate about their axes and revolve about a centre 22. The discs are on members 16; in each set, members with one disc alternate with members with two, and each member with one disc cooperates with a member with two in the adjacent set to false-twist yarn 10 arranged in a loop. To rotate the members, they are interconnected by a flexible shaft 15 and two members in each set are driven by a shaft 22 from pulleys 23, 24, Fig. 2 by a belt 18 passing over idlers, e.g. 25 revolving with the members. Either pulley may be clutched to the shaft according to the desired direction of twist by a sliding key 26. The shaft 22 may be rotated, and the members 16 revolved about the shaft by the arrangement shown in Fig. 5. The members are mounted in a drum 31 fast with a hollow shaft 29 rotating on a fixed casing 39 and shaft 22 is mounted to rotate in shaft 29. There are windings 35, 41 on the fixed casing 39, windings 37, 34 on the shaft 29 and a winding 32 on the shaft 22. The shafts 29, 22 rotate when A.C. is supplied to the windings 35, 41. In other forms (a) two arrangements as in Fig. 1 may be disposed one behind the other and carried on a revolving drum. The members 16 can be rotated by holding shaft 22 fixed as the drum rotates or by rotating shaft 22 by a belt. (b) the discs of each set are arranged radially of the circle around which they revolve, the discs of one set alternating with those of the other, (c) the discs of each set are on carriages carried by endless belts moving in non-circular paths, (d) the members 16 on each set each have two discs and are rotated by rollers driven four at a time by motors, directly or otherwise, or by gearing from a rotating central shaft, Figs. 6-8 not shown, (e) the surfaces are constituted by endless belts 91, Fig. 9, on pulleys 92 which both rotate and are revolved about the central shaft shown, guides 93 being provided for the yarns 10, (f) belts 20 are arranged as shown in Fig. 10, the yarn 10 being disposed as shown and being retained in position by its tension. The false-twist devices described may be included in a conventional crimping apparatus where the crimp is set by heat, one heating element serving a number of such apparatus if desired.