Flat bed knitting machine

In a flat bed knitting machine of the type comprising a pair of needle beds arranged cross-sectionally in an inverted V-shape, a plurality of needles disposed in needle slots in each of said needle beds, a jack disposed in each needle slot for controlling the movement of the needle, a selector jack for actuating the needle-actuating jack, a carriage movable on said needle bed and provided with a cam plate facing each needle bed, a selector controllablee electrically in accordance with a patternfor pushing the selector jacks and angularly moving the selector jacks in said needle slots to place their butts out of the camming action;

• the improvement wherein said cam plate has a group of cams for acting on butts of the jacks, said group of cams including a tuck cam for acting on jack butts so as to advance the needles associated with the jacks to a tucking position, and a unit of cams composed of fixed cams and movable cams arranged in an inverted V-shape around the tuck cam for acting on jack butts to thereby advance the needles to a knitting position;
• control means for controlling selected jacks to shift their butts to a tucking position in which they move over the movable cams retracted in their inoperative position, and engageable with the tuck cam;
• and raising means for advancing jacks associated with the selector jacks newly selected by the selectors after the selection of said jacks, to a position upward of said tucking position, for enabling the jacks to engage with the upper cams in said unit of cams.