GB761966A - Knitting machines, knitting methods and knitted articles - Google Patents

Abstract

761,966. Knitting. LOMBARDI, V. July 5, 1951, No. 16011/51. Class 74 (2). Oppositely rotating " main " and reverse cam rings 10, 41 impart to the needles 7 " forward " and " reverse " knitting waves, travelling in opposite directions, the " reverse " knitting waves being imparted by the action of cams 40 on previously radially projected butts 38, 38b or 38c, on arms borne by the needles, or by jacks associated therewith, and housed in the needle tricks. The needles take wrap yarn fed during the forward and return swings of wrap yarn feeders 15 carried on a stationary dial 12. In Fig. 1, the butts 38 are at the ends of resilient arms 67 of the jacks 35, which arms are held down in the cylinder tricks by cams 60, or are flexed about a fulcrum point 390 by a cam 59 to bring the butts 38 into the paths of the cams 40. In Figs. 16 and 17, the resilient arms 67a or 67b carry the butts into the paths of the cams 40, except where restrained by cams 60. In Fig. 18, jacks 35c are rocked about point 75 by cams 59c and 60c, to bring their butts into and out of the paths of, cams 40. The swing of each wrap yarn feeder covers part of the swing of each adjacent feeder and the feeders are swung by pinions 17 and racks 18, pins 19 of which follow cam grooves 20, 21, 23, 24 in a rotating cam ring 43, under control of a pattern drum. The needles are advanced into the range of the knitting cams by jacks 25 pushed out from inoperative position by cams 28 into the path of advancing cams 30, certain of the jacks being pushed in again, before they reach the associated cam 30, by pushers 27 selected by other pattern drums. A hollow 71 on each cam 40 relieves friction when the arms 67 of any jacks 35 are swung out while a cam 40 is passing. Main yarn is supplied from feeders 48 and may be inlaid by means of inlay cams; co-operating butts are provided on alternate needles and the inlay cams raise to tucking height any such needles which have not been raised to knitting height by the cams 30. Fabrics.-Fig. 5 indicates schematically main yarn knitted in jersey loops in courses 76-83 and wrap yarns knitted in diamonds 85, alternate wrap yarn feeders being active. In Fig. 8 red and blue wrap yarns say, are fed by alternate and intermediate wrap yarn feeders respectively and knitted in, where indicated, between successive courses 86-92 of white main yarn. In Fig. 13 course 96-105 of main yarn are knitted (zig-zag lines) into jersey loops outside design areas and are inlaid (dotted lines) in such areas between wrap courses knitted in accordion stitch. In Fig. 28a indicates a fabric which may be produced when active wrap yarn feeders, spaced ten needles apart, have a swing including twelve needles, enabling a full intarsia fabric to be produced. In Fig. 30 main yarns 116, 117, 118, 119 are knitted where indicated by zig-zag lines and inlaid where indicated by straight dotted lines the remaining zig-zag lines indicating wrap yarns fed by forward and return swings of the feeders and knitted in. Specification 762,012 is referred to.