GB892977A - Improvements in or relating to straight bar rib knitting machines - Google Patents

Abstract

892,977. Knitting. TAYLOR, G. July 18, 1958 [April 26, 1957], No. 13304/57. Class 74 (2). Selected needles 4 of one bed of a straight-bar rib knitting-machine are mounted in a bar 5 for operation independently of the remaining needles of the bed, a loop transfer device 4a is mounted for operation in association with each selected needle and means is provided to displace the mounting of the selected needles and loop transfer devices at required times to transfer loops from the selected needles to next adjacent ones of needles 1 of the other bed automatically. The devices 4a may, as shown, be loop spreaders on machine needles 4 which are longer than the remaining machine needles 2. The bar 5 can be moved, to project the needles 4, through rollers 6 running in cam slots 7a in a plate 7 slidable in a relatively stationary support 8 and movable by a slidable cam 10 operated by patterning or disc cam mechanism 11. Rib welts are started on a greater number of needles than is necessary for running on to a point bar and are so knitted, with the machine needles 2 and 4 operating in unison, until just before the production of a slack course C, or courses. The needles 4 are then projected independently and to a greater extent than the needles 2, to spread their loops. All the frame needles 1 are now raised for the next course, the said next adjacent needles thereof penetrating the spread loops. The frame needles then receive yarn for the said next course C, drawing it over the needles 2 and 4 and through the old loops and the spread loops which are surrendered to them. Thus double loops DL are produced on spaced frame needles and the number of wales is reduced to that required. The needles 4 remain projected, and thus inactive, during knitting with the machine needles for that course and during one or more of following waste courses.