Abstract: The device includes at least one selection lever, one end whereof is arranged laterally facing the needle cylinder at the level of a heel of selection elements accommodated in the grooves of the needle cylinder below the selectors or sub-needles. The selection lever is movable towards or away from the needle cylinder from a first position, in which its end engages the heel of the selection elements, to a second position in which it does not interfere with said heel. The end of the selection lever has a rising portion which in the first position raises the selection element when the needle cylinder rotates with respect to the selection lever. As an effect of this lifting, the overlying selector is engaged by a lifting cam arranged facing the needle cylinder so that the overlying needle is moved to knit.

Abstract: The selection system is based on a reciprocal action of a selector jack for each needle and operative cams, such that each selector jack may not be selected or may be selected one or two times during its engagement with one same operative cam, owing to the existence of two electronic controls for each cam. Each control includes a box having a plurality of selectors for the jacks, and the selectors may be moved from a retracted inoperative position to an extended activated position for a very short period of time due to a special arrangement of magnets.

Abstract: A device for selecting the needles on the dial plate of single cylinder circular knitting machines for the manufacture of ribbed fabric, said device comprising a coaxial sleeve secured on top of the dial plate and revolving with the dial plate and, as many swinging elements or jacks as there are needles on the dial. Each jack slides in a vertical groove which is defined in the sleeve and which coincides with a needle groove in the dial. Slides are selected to vertically displace the jacks from an operating position into a rest position. A pinned drum controls selectors and cams to control the swinging motions of the jacks when they are in operating position in order to control the radial displacements of the corresponding needles by means of the thus operated jacks.

Abstract: Yarn feeding and changing apparatus for multi-feed sinker top circular knitting machines having a single circle of needles, wherein a yarn striper box is placed within the needle circle at each feed of the machine to provide a circle of boxes, and wherein a remotely programmed yarn selector is provided within the circle of boxes, the yarn selector and the circle of needles rotating in unison relative to the circle of yarn boxes. Each striper box is provided with a plurality of yarn feeding fingers and with a rocker, a control jack, and a clamp and cutter individual to each finger, the jacks controlling the rockers to move the fingers between feeding and idle positions. The yarn selector acts on the jacks to provide a yarn selection individual to each of the boxes. Each clamp and cutter is partially opened by its related rocker when its related yarn finger is moved to idle position and is thereafter fully opened and closed by the yarn selector.