GB793043A - Improvements in or relating to hand knitting machines - Google Patents

Abstract

793,043. Hand knitting-machines. SKENE, R. VON. Aug. 27, 1954, No. 24904/54. Class 74(2). The cam lock 8 of a flatbed latch-needle machine carries a yarn guide 30 the eye of which is formed with points 46 of which the leading one opens the needle latches, for yarn reception, as the lock traverses the bed. Each point 46 is bevelled from underneath, so that misplaced needles are pressed back into their grooves. A straight part 54 of a blade 31, also carried by the cam lock, lies closely beneath the needles 3 and prevents the stitches being carried forward as the needles advance. Obliquely upturned ends 53 of the blade 31 assist in preventing accidental cast-off of stitches. The front ends of the needle tricks are deepened at 5, Fig. 3, so that by tilting the needles they may be withdrawn without removal of the needle bar 4. Figs. 4 and 5 show other formations of needle trick to the same end. The stitch cams 19 are hinged about pivots 20, so that the leading cam is lifted and rendered inoperative by the needle butts, as they pass under it, only the lagging cam being effective and, to vary the stitch length, the cams are adjustable along their pivots by unscrewing a handle 12 and partly rotating a lever 10 to move a plate 15 bearing lugs 21 which engage the outer ends of the hinges of the stitch cams. Rib knitting may be carried out by introducing a second set of latch needles 34, fixed in a bar 33 movable up and down, to knit, by a lever located in any one of three positions by a ball catch. That side of the upper edge of a plate 37 which faces the needles. 34 is left square to assist knockover. The other side is rounded to allow the fabric to slide down easily under the action of take-up weight. The needle bar 33 can be moved out of the way for plain knitting. As the lock moves beyond the last needle at the end of a traverse, a roller 59 drops off the needle shanks and, under the influence of its spring 67, the other end 68 of a lever carrying the roller clamps the yarn as it passes through a double loop 65, on its way to a tension take-up arm 56. To knit alternate plain and purl courses, the whole fabric may be reversed, face for face, between successive courses, by means of a comb 77, the hooked teeth 79 of which can be made to envelope the needle hooks and receive their loops, which are restored to the needles after the comb has been turned end for end. By making the pitch of the hooks twice that of the needles, loops may be transferred to adjacent needles, to form lace openings.