GB967037A - Improvements in or relating to knitting machines - Google Patents

Abstract

967,037. Knitting-machines. SCOTT & WILLIAMS Inc. Jan. 2, 1963 [Jan. 23, 1962], No. 306/63. Heading D1C. A circular knitting machine comprises means to prevent the formation of "eyelets" in the fabric when an auxiliary yarn is introduced or removed in two-feed knitting operations. The needles are arranged in three groups 94, 96, 98 two of which 94, 98 flank an intermediate group 96. During a single round of knitting the needles of one of said flanking groups takes yarn from one of said two feed points and draws single yarn stitches while the other of the flanking groups takes yarn at both feed points and all adjacent needles of the intermediate group take yarn at one of said feed points and from bights without casting off stitches already held on these needles. The control means comprises a stitch cam 26 and means for moving this cam radially which includes a bell crank 118 operated from the main cam drum Fig. 9 (not shown). The needles of the intermediate group have stepped butts. (Fig. 2) to effect their last mentioned action or to cause them to move to a cast off position then seize the yarn at another of said feed stations and draw off both of the seized yarns together through the stitches already held on the needles to form stitches containing both of the yarns. As the cam 26 is withdrawn, cam 64 carried by a slide 62 is moved inwardly. This effects a premature action of the sinkers 20<SP>1</SP> by engagement with the edge 90 of these sinkers, as compared with the normal inward sinker movement imparted to the normal sinkers by the cam 56, which latter movement occurs only after the yarn has been drawn over the edges 80. The motion of the sinkers 20<SP>1</SP> is permitted by the low butts 92 entering the cutaway portion 60 of cam 58. The result of needles 96 not being cleared is the formation of double loops of both main and auxiliary yarns as indicated at L 1 , L 2 , and L 3 of Fig. 7. Specification 966,722 is referred to.