GB956364A - Improvements in ribbon looms - Google Patents

Abstract

956,364. Shuttleless ribbon looms. L. WEINER. July 15,1960 [July 18,1959], No. 24801/60. Headings D1E and D1K. Two weft inserting needles lay loops of weft from opposite edges of the tape, and two bearded needles knit selvedges from both wefts at both edges. Weft inserters. Each weft inserting needle slides through a pivoted block and has its outer end driven in a circular path by a crank, whereby the eyes 4a, 4a<SP>1</SP> of the needles follow the paths shown in Fig. 11. Knitting selvedges, The bearded needles 5, 5<SP>1</SP> and their pressers 6, 6<SP>1</SP> are reciprocated by eccentrics in a sloping path, rising towards the beards of the needles. Shedding mechanism. The healds 35, Fig. 3, are mounted in sheet metal frames 30 sliding in channels 34 and are operated by cams 33 working in openings 30a in the frames. Creel; tensioning warp. The warp is supplied by a creel having a double-disc tension device for each thread; the whole warp then passes almost completely round a braked drum. For weaving zip fastener tapes, the drum may be in two parts, the warp for the body of the tape passing round one part and the cords for the beaded edge round the other. Take up. The tape may be drawn off by nip rolls, which may be conical for weaving curved tape. Beating-up. The weft may be beaten up by a rotating comb having two sets of curved teeth. Alternatively, as shown in Fig. 17, a reed 59 slid - able in a pivoted block 65 may be used, having its upper end moved in a circle by a crank 62; or the crank may operate on the lower end of the reed below the block 65.