Abstract: A system for selecting the stitch forming organs for textile machines; in particular for circular machines for knitwear, contemplates software management such as to update the status of each individual lever (28) of an activator (20), as well as in predetermined time intervals corresponding to the angular positions that occur every K needles (10) or sinkers (26), where K is the number of levers (28) in line of the activator (20), also in other time intervals corresponding to intermediate angular positions includes between 1 and K; the correct value of these angular positions is determined by the profile of the lever (28) of the activator (20).

Abstract: A system for selecting the stitch forming organs for textile machines; in particular for circular machines for knitwear, contemplates software management such as to update the status of each individual lever (28) of an activator (20), as well as in predetermined time intervals corresponding to the angular positions that occur every K needles (10) or sinkers (26), where K is the number of levers (28) in line of the activator (20), also in other time intervals corresponding to intermediate angular positions includes between 1 and K; the correct value of these angular positions is determined by the profile of the lever (28) of the activator (20).

Abstract: A universal circular knitting machine with a plurality of knitting stations, having two revolving cylinders axially aligned with each other surrounded by cam skirts, selection devices, stitch length regulation devices and yarn selector devices mounted on a stationary structure. Each movable element for determining needle selection and needle vertical movement, along with yarn-guide actuation, is driven by an electromechanical actuator mounted on the stationary structure. A central electronic control unit sends actuation command signals to the electromechanical actuators. The signals are synchronized with the revolution of the cylinders in accordance with a pattern corresponding to a knitted fabric to be produced.

Abstract: For a multi-feed knitting machine or hosiery machine, the system of selection of the needles is equipped, per each thread feed, with at least a stationary electromagnetic actuator, suitable for acting by magnetic attraction on wire springs incorporated inside selection sinkers inserted inside the slots under the needles and the needle pushers. An extraction cam extracts the selection sinkers and the needle pushers coupled with them from the slots, in order to bring the heels of the needle pushers to interfere with a lifting cam. A loading cam brings the springs of the sinkers into contact with the face of the actuator, wherein they are retained by magnetic force. A narrow area of the face of the actuator can be de-magnetized by impulses emitted by an electronic control system. If this area is demagnetized, the springs of the sinkers are taken by a blanking-out cam, which pushes the sinkers into their relevant slots and the heels of the needle pushers out from the field of action of the lifting cam.

Abstract: A double cylinder circular knitting machine for forming articles of terry fabric, comprises, in one of the cylinders (3), a ring of arcuate terry sinkers (24) each controlled by a butt (24A) so that it carries out a reciprocating angular sliding movement in an arcuate seat (22) in the end of the cylinder (3), and a loop withdrawal ring (26) for retaining the loop during the withdrawal of the end of the sinker (24) from the loop. The working end of the sinker (24) is rotated before its forward movement, so as to move it away from the loop withdrawal ring (26), and enables it to pass over the loop just formed on the previous course, the sinker (24) then being rotated in the reverse direction for forming the next loop. This arrangement permits loops to be formed in each course of the fabric.

Abstract: A lock for circular knitting machines. According to the invention, a lock or cam comprises a fixed lock element supporting or carrying cams defining the guide tracks for the knitting needle heels, causing the outgoing and re-entering movements of said needles; such cams are secured to a slider movable between extreme positions within a guide of said fixed lock element. The slider has a threaded portion engaging a first screw thread of a manually operable adjusting element for the slider stroke, which adjusting element is provided with a second screw thread in opposite direction to the former; this second screw thread screwing in a threaded seat of the fixed lock element, so that at a rotation of said adjusting element there would correspond an overall displacement of the cam carrying slider equal to the sum of the displacement of said slider relative to the adjusting element and of that of the latter relative to said fixed element.