Control device for adjusting the radial position of the sinkers in a circular knitting machine

A control device for adjusting the radial position of the sinkers in a circular knitting machine provided with means for varying the level of the plane of the sinkers and the length of the stitch loops, comprising two concentrical cams having a substantially circular contour laying on a plane perpendicular to the axis of the cylinder and with their center being positioned on the axis of the cylinder, an annular-shaped support keeping said concentrical cams in position, said innermost can being radially stationary and the outermost cam being subdivided into a plurality of lengths, means attaching said lengths of said outermost cams to said annular-shaped support to enable said lengths of said outermost cam to approach to, and move away from, the cylinder of the machine, in a discrete fashion, in the radial direction, said lengths which compose the outermost cam being provided with peripheral shaped portions along their outer contours;

• a substantially circular rotatable countercam concentrically located around said outermost cam, said counter cam being provided with an inner contour which is provided with shaped inner portions which contact the radially movable outer peripheral shaped portions of said lengths of said outermost cam, said lengths of said outermost cam movable radially inwardly by discrete rotation of said countercam.