Abstract: A needle control device for stocking knitting machines, comprising a connecting element which can engage a needle or sub-needle or slider and can be arranged in the same slot of the needle holder that accommodates a needle, and an actuation element which is connected to the connecting element and can oscillate on command on a plane which is substantially parallel to the sides of the corresponding slot of the needle holder in which it is accommodated. The actuation element is provided with at least one first heel and at least one second heel which are mutually spaced along the side of the actuation element that lies opposite the side meant to be directed toward the bottom of the slot of the needle holder.

Abstract: A slider for double-cylinder circular knitting machines which comprises an elongated laminar body which has a first longitudinal side which is meant to be rested on the bottom of an axial slot formed in the curved surface of the lower needle cylinder or in the curved surface of the upper needle cylinder and at least two heels which protrude transversely to the longitudinal extension of the laminar body on the second longitudinal side of the laminar body that lies opposite the first side. The laminar body has, proximate to one of its longitudinal ends, a hook for engagement with a needle. A first one of the two heels is arranged on a portion of the laminar body which can move with respect to the remaining part of the laminar body in a direction which has a component which is transverse with respect to the longitudinal extension of the laminar body for the transfer of the first heel from an inactive position to an active position, or viceversa.

Abstract: Device and process for pulling with reversing circular knitting frames, comprising a cylindrical shell coaxial with the needle cylinder or the needle cylinders of the frame, and positioned above the plane of formation of the knitted fabric. A cylindrical sleeve is positioned coaxially with the shell, and axially slidable within the shell. A rotatable expandable tensioning piston is positioned coaxially with the sleeve and axially movable within said sleeve to expand and clamp the knitted tubular fabric inside the sleeve and drag upwardly the sleeve as well as the tubular knitted fabric.