Patent GB-972690-A (GB)
Title: Knitted solid color fabrics and method and apparatus for making the same
IPC: D04B9/26
Filed: 1961-11-01
Abstract: 972,690. Knitting. DRAPER CORPORATION. Nov. 1, 1961 [Nov. 10, 1960], No. 39077/61. Headings D1C and D1K. In a tubular @oric knitted on a circular knitting machine, at the junction of adjacent areas knitted from two different yarns, a bight of one yarn is wrapped round the shank of a raisedneedle which then draws a stitch of the other yarn through the bight and a previously drawn stitch of said other yarn. As shown, Fig. 1, a stocking comprises triangular areas 20 of the same or differing colours, whose edges extend at an angle to the fabric wales, separating areas 23, 23<SP>1</SP> which may be of different colours. In a modification, Fig. 2 (not shown) the stocking may have a straight vertical panel of one colour on either side. The stockings are knitted on a machine having latch needles 30, which over one half of the circumference of the cylinder 29 have long butts and over the other half have short butts, each needle being associated with a jack 32, having frangible butts 33, a master butt 34 and a plain sole butt 35. At the main feeding station 36 are provided a centre cam 38, a wing cam 39 with ends 40, 41 which assist in raising short butt needles, stitch cams 42, 43 and needle raising cams 46, 47. Cams 42, 43 have recesses for narrowing picks 44, 45 which are movable simultaneously between active and machine positions during knitting of heels and toes by a linkage including a lever 63 operated by cams 67 spaced round a control disc 68 on the main pattern shaft 69. The auxiliary feeding station comprises centre cam 48, guard cam 49, stitch cams 50, 51 and needle raising cams 52, 53 with adjacent widening picks. Front and rear radially movable needle lowering cams 54, 55 are provided spring biased against the needle cylinder and having associated guard cams. The picks 44, 45 are operated additionally through follower 78 whose engagement with a cam 80 on a rotatable disc 81 is controlled by a disc 82 with frangible butts on the pattern drum 83. When follower 78 is engaging cam 80, it transmits the movements through a linkage to arm 63 and thus picks 44, 45 will be moved to an inactive position when at the same time follower 85 is in engagement with butts 84. Cam 54 is with drawn by the cams 92a, 92b on drum 93 which engage the toe 95 of a bar 94 acting through a bell-crank lever 96 which engages behind a follower 98 fixed to the stem of cam 54. Cam 55 is withdrawn by cams 109a, 109b on disc 110 which operate through a lever 107 and a linkage including a bell-crank lever 100 connected to the stem 99 of cam 55. In operation, in the first course after rib portion 111 the cylinder moves counterclockwise i.e. left to right in Fig. 12. At the main feed needle 112 at left of a black panel I, Fig. 1a, is raised with its group by the jacks and then raised further when the master butt 34 on its jack, engages cam 114. It then passes over stitch cam 43 and is raised by pick 45 over wing cam 39. Grey yarn is being fed to a grey panel I at the main feeding station and this is wrapped round needle 112 after which the remaining needles of grey panel I knit. The remaining needles of black panel I do not knit. On further rotation, needle 112 is lowered by cam 55 and is knitted with the remaining needles of black panel I. At the main feeding station needle 115 in black panel II is raised in the same way as needle 112 and the grey yarn is wrapped round it before grey panel II is knitted. On continued rotation needle 115 is lowered by cam 55 and at the same time black panel II yarn crosses over grey panel I yarn to form the fourth seam, without any needles being raised an extra height, and black panel II is knitted. The direction of rotation is now reversed and a similar course is knitted using pick 44 and needle lowering cam 54. Specification 519,867 is referred to.