Abstract: A device for the selection of needles in circular stocking knitting machines, comprising a lower needle (or jack) having radial deflection for each needle on the cylinder of the said machine. Selection actuators are provided for the control of the lower needles. Each lower needle includes two components: an element oscillating between an inoperative position and the operating, vertically movable position in order to control the corresponding needle and to follow the courses of upward and downward movement cams; and a toothed element which is arranged facing the oscillating element, capable of oscillations with same, but prevented from moving vertically. The toothed element always remains at the level of the selection actuators even when the oscillating element moves vertically.

Abstract: A device for needle-by-needle selection in circular stocking knitting machines is disclosed. An elastic lock pin or segment (19) is provided for each lower needle (13) of the type having an elastic deflection tail. The segment is carried by a crown (22) fixed with the cylinder and usually in a position shifted downwards away from the tail of the lower needle. A thruster (20) is provided under the lock segment, which can be moved upwards and is intended to deflect the lock segment (19) up to the level of interception with the tail of the lower needle (13). This results in a locking of the lower needle in the deflected, inoperative position. A selection electromagnet (21) is provided which can be activated and deactivated according to a program to hold or release the lock segment. The activation/deactivation keeps the inoperative lower needle locked or releases it because it is moved towards the outside into the operating position.

Abstract: A process and device for picking up and transferring stockings from a stocking circular knitting machine to a sewing machine for closing the toe of the stockings. The device includes conveying units for taking hold of the stocking at two opposite zones of the knitted fabric at a level of the open toe. Structure for moving the stocking is provided between a position for picking up the stocking, within the circular machine, in a position outside of the circular machine. A holding structure is provided for taking hold of the stocking from the conveying units and maintaining a hold on the stocking for positioning the stocking with respect to the sewing machine, for closing the toe. The method is based on the steps of mechanically removing the stocking from the sewing machine based on picking up the stocking at two diametrically opposite locations and supporting the opposite parts during transfer, bringing the edges of the open toe together for sewing the toe edge.

Abstract: A device for cutting threads in circular stocking knitting machines, which includes a circular saw having teeth on its periphery and at least one knife. Each tooth of the saw has a cutting zone away from and moved back with respect to the front part. The front part is intended for gripping and dragging along the thread towards the knife. Between the front part and the cutting zone of each tooth, there is provided a notch or step, which is intended for holding a piece of thread without being intercepted by the knife. The cutting zone interacts with the knife for cutting the thread away from the front part, when the thread rests on the cutting zone.