GB671932A - Improvements in flat bed knitting machines - Google Patents

Abstract

671,932. Knitting-machines. MORLEY, Ltd., I & R., HARRISON, A., and HOWITT, A. E. April 28, 1950 [Feb. 8, 1949], No. 3380/49. Class 74 (ii). To enable intarsia or Argyle patterning to be produced on a single flat bed machine having independently operable needles, two yarn carrier bars 5, 6 are provided each having a number of carriers 32, 33 which feed yarns to groups of needles for the knitting of each course. Before the needles are manipulated by the cam box to knit the course, the carriers are returned to a position at the back of the needles and after completion of the knitting of the course the carriers are brought to the front to feed yarn for the next course. Whilst at the back of the needles the carrier bars are shogged by altering the position of their end stops so as to vary the number of needles to which the carriers feed yarn in each course thereby enabling the patterned fabric to be produced. In addition, embroidery thread carriers 76, 77, which are shogged a single needle spacing each course, may be provided for producing diagonal lines across the fabric. Thread carrier bars 5, 6 are mounted on members 7 and 12, 13 slidable on rails 8 and 15. Projections 16 extend from the members 7, 13 and engage the arms of drivers 17, 18 secured to a driving bar, the drivers releasing the projections 16 at the end of each carrier bar traverse. The rails 8, 15 are mounted at their ends in slides 9 which are guided in brackets 10 on the end frames of the machine, the slides 9 being actuated by levers 34 operated by levers 37 controlled by the cam box to project the yarn carriers across the needle row at the end of each cam box traverse. To produce intarsia work the traverse of one of the carrier bars and its guides is reduced whilst the other has its traverse increased and this is achieved by end stops 22, mounted on bars 20, 21 adapted to engage stop pins 23 in the members 7, 12, 13. The bars 20, 21 are shogged by means of stepped cams operating on their end portions. Embroidery thread guides 76, 77 are similarly mounted and operated except that their movements are controlled by ratchet and pinion mechanism which ensures that single needle space traverse only is obtained for each course of knitting, mechanism also being provided for reversing their movements when they reach the end of the needle row.