Abstract: A knitting line comprises a plurality of yarn feeders from which a downstream machine draws respective yarns. The machine is provided with selection elements adapted to vary the state of selection of the yarn feeders in relation to the angular position of the machine. Each of the yarn feeders is provided with a stationary drum and with a yarn count sensor arranged to generate a pulse per each yarn loop unwound from the drum. A selection signal is periodically sent to the yarn feeders, which is indicative of the state of selection of the individual feeders in relation to the angular position of the machine.

Abstract: Knot catcher for yarns and threads includes two rotary rollers spaced from each other to form therebetween a thread-receiving through opening which is limited at two ends thereof by two opposite walls of the housing of the knot catcher. The size of the opening can be adjusted by adjusting the rollers relative each other.

Abstract: A yarn monitoring device comprises in association with each doubling spindle (1) a sensing arm (7) monitoring the upwardly directed yarn run between yarn guide eye (3) and feed roller (V), which arm is mounted by means of a mounting bush (9) for limited swinging on a rocker shaft (6). The mounting bush (9) comprises a slot (12) extending in its circumferential direction, in which engages a stop pin (11) extending radial to the rocker shaft (6) and fixed relative thereto. In the slot (12) is a lining in the form of a substantially U-shaped clip (13) of spring steel, whose semi-circular connecting part (13b) lies at the end surface (12b) of the slot (12) directed away from the spindle and whose U-arms (13a) extend parallel to the side walls (12a) of the slot (12), abut thereagainst and are inwardly bent at their free ends (13c) so that they grip on to the stop pin (11) in the swung up position of the sensing arm (7).

Abstract: The take up means (5) is inhibited in response to a predetermined operating conditions of the flat knitting machine.

Abstract: The invention relates to a thread movement sensor comprising an arm with at least one thread guide. The invention solves the problem of sensitivity of the sensor to the vibrations of the machine by making a part of the arm an element of a magnetic circuit of coil, the latter being connected to the control circuit of a knitting machine.

Abstract: This invention relates to an apparatus for selective positive feeding of a plurality of yarns (Fa-Fd) to striping knitting machines, comprising a plurality of yarn feeding units (1), each having a number of yarn feeding devices. The invention proposes to use a single electromagnet (9) in each yarn feeding unit to move the yarn control elements (7'a-7'd) of all yarn feeding devices from their feeding to their non-feeding positions by means of a uni-directional coupling between the electromagnet (9) and the control elements (7'a-7'd) and to move the control elements in the reverse direction by means of an increase in yarn tension when the yarn (Fa-Fd) is being knitted into the fabric.

Abstract: A flat knitting machine has a bobbin carrier rotatably supporting yarn bobbins from which yarns are led off to a rotary carriage through a protective device in the form of a channel member or tube for each yarn, to reduce the effects of air resistance and material attraction between the yarns. Deflector pulleys can be provided to increase the lengths of yarn within the protective device and yarn breakage detectors can be positioned at the entries to and exits from the device.

Abstract: A yarn fault detector suitable for mounting on a main frame of a knitting machine or on a side creel. The detector has two yarn guides on a guide frame that is biased to an operative yarn guiding position but movable overcenter to a yarn releasing position. End portions of a freely pivotable stop bar contact the yarn guides in the operative position of the guide frame to assure adequate contact with both guides. A variable bias is applied to the guide frame by means of a loop of flexible material on a rotary shaft, and a spring under tension between the loop and an eccentric cranked portion of the guide frame, the tension being dependent on the length of the loop wrapped around the shaft by rotation of the shaft. The loop and shaft are made by a one-piece moulding operation.