Abstract: A circular knitting machine for floated pattern hosiery with false rib stitches in which the courses of floated pattern knitting are produced in a single knitting position by radially withdrawing in the pattern yarn feed stations the knitting cams and the raising cams, so causing those needles which have received the pattern yarns to pass to an intermediate level until the station in which the basic yarn is fed. These cams then return to operation for the production of the foot in multi-feed plain knitting.

Abstract: A control device for adjusting the radial position of the sinkers in a circular knitting machine, consitituted by a couple of cams for the radial drive of the sinkers. The cams are co-planar and concentrical with the axis of the cylinder and substantially circular. The innermost cam is stationary. The outermost cam is radially approachable and pushable away due to the effect of a countercam externally placed around the outermost cam and provided with approaching and pushing-away lengths, which, by means of the countercam's discrete revolution, radially approaches the outermost cam, and pushes the outermost cam away.

Abstract: A circular knitting machine has rocking selector jacks, selected ones of which are raised in a raising zone by means of a raising cam. A cam is provided in correspondence of the raising zone with a lower profile extending parallel to the intended trajectory of the other, non-selected, jacks to engage butts of these jacks whereby to prevent them from being raised unintentionally.