Abstract: An electromechanical transducer apparatus for converting between mechanical energy and electrical energy is disclosed and includes first and second magnetic flux generators including pole pieces coupled to direct magnetic flux. The magnetic flux generators are disposed such that opposite polarity pole pieces are spaced apart in adjacent relation. A pair of reciprocators are coupled for reciprocating movement between the pole pieces and are spaced apart by first and second air gaps. A closing piece completes a magnetic circuit and when the reciprocators are disposed such that the first air gap is smaller than the second air gap, magnetic flux generated by the first magnetic flux generator flows in a first direction via the first air gap through the closing piece. When the reciprocators are disposed such that the second air gap is smaller than the first air gap, magnetic flux generated by the second magnetic flux generator flows in a second opposite direction via the second air gap through the closing piece.

Abstract: An electromagnetic device includes a conductive coil, a main magnet pivoting about an axis XX?, a first and second yoke, a first and second stabilizer magnet, as well as a first and second actuator magnet arranged to slide along the axis YY? that is perpendicular to the pivot axis XX?, in such a way as to force the main magnet to adopt an equilibrium position, the stabilizer magnets are arranged such that this sliding is accompanied by a movement of the stabilizer magnets so as to position one of the stabilizer magnets in a given position in order to limit the leaks which could occur at one of the two yokes.

Abstract: An electromagnetic energy converter including two plates each having an inner face; a flux variation device arranged between the inner faces, and which includes a first prismatic part, a magnet and a second prismatic part, and is arranged to pivot about an axis between two equilibrium positions, and for which the first and second prismatic parts each come into contact with an inner face; and a coil designed to be crossed by a magnetic flux generated by the magnet and guided by the two plates in a first direction when the device is in one equilibrium position, and in a second direction when said device is in the other equilibrium position.

Abstract: In a method and a knitting machine for the production of knitting goods with horizontal stripe a comparatively wide thread changing device having a plurality of thread fingers can be associated with two knitting points in such a manner that a first portion of the threads guided by the thread changing device can be fed to one knitting point and another portion of the threads can be fed to the other knitting point or to the knitting tools respectively moved there into a thread pick-up position.

Abstract: A method of manufacturing multi-color hosiery comprises at least the steps of: a. providing a pattern knitter which has a main control computer to process color differentiation and set up yarn feeding commands according to a knitting color layout of hosiery; b. selecting total number of colored yarns and color types of pattern color yarns, and mounting the colored yarns on yarn racks, and arranging all knitting sets of a feeder support of the pattern knitter to match the colored yarns up to forty six different color types; and c. controlling yarn fingers through the main control computer according to sequence of the yarn feeding commands to perform knitting operation to finish a hosiery body. Any pattern color on the hosiery can be knitted to one row of the hosiery body.

Abstract: A circular knitting machine having an integrated multiple yarn changing apparatus comprises a first yarn changing apparatus, a second yarn changing apparatus, and a driving cam set. The first and second yarn changing apparatus include respectively at least one yarn feeding means which is moved outwards through a first yarn feeding stroke and a second yarn feeding stroke to a yarn feeding position. The driving cam set includes a first driving track and a second driving track to respectively drive the yarn feeding means to proceed the first and second yarn feeding strokes. The second driving track has a driving delay zone to generate a yarn feeding time lag between the first and second yarn feeding strokes. Knitting needles located between the first and second yarn feeding means are guided to a yarn hooking position to respectively hook the yarn due to the yarn feeding time lag.

Abstract: A knitting machine is described, which includes at least one carrier provided with knitting tools (2, 3), a cam mechanism with at least one knitting point (71) for moving selected knitting tools (2, 3) into a yarn pick-up position and a striping attachment for feeding selected yarns to the knitting tools (2, 3) brought into the yarn pick-up position. According to the invention, the striping attachment has at least one first and one second yarn changing device (73, 74) such that yarns (78, 79) fed optionally by the first or the second yarn changing device (73, 74) may be laid into the knitting tools (2, 3) brought into the yarn pick-up position at the knitting point (71) (FIG. 12).

Abstract: A device for weft yarn presentation in a shuttleless loom is operated by linear electric motors. The motors include fixed plates and movable plates pivotally mounted to the fixed plates. Yarn presenting rods are carried by the pivotal plates and rotate from raised stand-by positions to lowered delivery positions. The respective axes of rotation of the pivoted plates are arranged on a line skewed to the path of movement of the gripper so that the weft yarn delivery positions are close together.

Abstract: A weft selection device for a weaving machine has at least two drop wires with feed-through eyes. The drop wires are fixed rotatably in two planes lying above one another to take a weft thread extending through the feed-through eye within or beyond the reach of a gripper. Each drop wire has a bent end containing the feed-through eye. The drop wires are fixed rotatably in pairs on common fixing device. The top drop wire of each pair is bent upwards and the bottom drop wire of each pair is bent downwards. A free space is provided above and below the fixing device of each pair to allow through unimpeded the weft threads. Thus, it allows for an arrangement with a minimum angle of bend of the weft threads after they have passed through the feed-through eyes. The present weft change motion is suitable for coarse and stiff yarn.

Abstract: The thread guide structure for double-cylinder circular knitting machines comprises a thread guide body which has an elongated configuration and has, proximate to one of its longitudinal ends, a thread dispensing passage. The thread guide body has a first part and a second part which are mutually articulated proximate to an intermediate region of the thread guide body. The first part, which is provided with the thread dispensing passage, is oscillatable with respect to the second part about an oscillation axis which is arranged transversely to the longitudinal extension of the thread guide body.

Abstract: A circular knitting machine striper control system for controlling the operation of the stripers of a circular knitting machine in changing yarns for patterns automatically. The control system includes a controller carried on a rotary table, having a plurality of swinging plates respectively controlled by solenoids to drive striping fingers of either fixed striper in moving respective striping feeders to change yarns for patterns. A striping finger is not triggered by the respective swinging plate during the rotary motion of the rotary table as the respective solenoid does no work, when yarn changing operation is not needed.

Abstract: A thread supply device for multi-system circular knitting machines has at least one warp beam accommodated rotatablhy in a receiving frame. On the warp beam are wound the threads associated with the individual knitting systems in the form of adjacent thread winding areas with equal axial lengths and equal diameters. The warp beam is connected with a drive and driven thereby in such a way that it always delivers to the knitting systems the average thread quantitites consumed thereby during operation of the circular knitting machine irrespective of the momentary diameters of the thread winding areas.

Abstract: A lever-type yarn guide device for textile machines according to the present invention comprises at least one yarn guide lever operated by a linear motor and further comprises sensor means arranged to sense tghe positions assumed by the lever during its movement.The linear motor is defined by a coil immersed in a magnetic field generated by permanent magnets.

Abstract: Device for controlling the thread guides in a circular knitting machine, particularly for manufacturing hosiery and similar goods. The machine has a grooved needle cylinder, the grooves containing needles and needle jacks. The machine also has a control drum which controls the needle jacks by selectively tipping them by control elements mounted upon the cylindrical surface of a control drum. The thread guides of the knitting machine are controlled by programming elements mounted on an outer end surface of the control drum, the thread guides being selectively driven by programming elements mounted upon the outer end surface of the control drum.

Abstract: A yarn-feeding apparatus for selective positive feeding of several yarns to a knitting machine, comprising a sensor for generating sensor signals, the sensor signals representing the respective feeding condition or non-feeding condition of the yarns, and an error detection unit connected to the sensor for turning off the knitting machine in response to predetermined sensor signal combinations representing a yarn breakage and/or a yarn over-feed and/or a yarn change fault. For shortening the response time of the error detection unit and for enhancing the reliability thereof, the error detection unit comprises a working position sensing unit for generating position data representing the working position of the knitting machine, a logic circuit for deriving a yarn changing signal from the sensor signals, and a memory unit for storing yarn changing position data.

Abstract: A feed device for a circular knitting machine capable of positively feeding the needles with an adequate amount of yarn without the needles having to require the necessary yarn by pulling it and increasing its tension is disclosed. It comprises two sets of toothed rollers adapted to mesh without the respective teeth thereof making contact and a yarnguide for each pair of rollers capable of adopting an operative position in which the yarn guided by the eyelets of the yarnguide runs between the teeth or an inoperative position in which the yarn is spaced from the rollers. In the operative position it is contemplated that the rollers may be moved farther apart, whereby the yarn feed speed is reduced.

Abstract: A yarn feeder mechanism for circular knitting machines has a plurality of feed fingers with yarn feed extremities at the front thereof and movable between a low feed position and a high inactive position, means for selectively lowering the feed fingers, and a latchguard plate which is liftable to a non-obstructing position. The feed fingers are associated with abutment means for engaging the feed fingers to the rear of the respective yarn feed extremities and means are provided for simultaneously lifting the yarn feed extremities and the latchguard plate to the non-obstructing inactive position while maintaining the latchguard plate in spaced relationship to the yarn feed extremities in the non-obstructing position.

Abstract: A yarn feed unit for a single-cylinder circular knitting machine comprises a plurality of yarn feeding fingers independently journalled to a common axis and independently movable between an inoperative and an operative position. The axis is supported by a carrier body which is radially displaceable with respect to the needle cylinder between a work position close to the needle cylinder and a rest position remote from the needle cylinder. Movement of the carrier body from the work position to the rest position causes the operative yarn feeding fingers to be simultaneously tilted into the inoperative position and all the yarn feeding fingers to be radially withdrawn from the needle cylinder, thus allowing rotation of the needle cylinder and needle dial to set the machine without any risk of damaging the needles and without manually handling the dial needles.

Abstract: This sock is provided with an outwardly rolled decorative upper edge (13) which is integrally knit with the sock to provide the appearance of a simulated overedge stitch and is formed on a conventional type of circular hosiery knitting machine without requiring extensive modification. The formation of the simulated shell overedge stitch on the knitting machine eliminates the separate step of sewing on an overedge shell stitch, as has been the prior practice. The decorative upper edge is formed of a substantially inelastic yarn (I), a stretchable yarn (S), and an elastic yarn (E). These three yarns are knit in plated relationship in stitch loops in spaced apart wales (W-1 and W-5) of a plurality of successive courses (C-5 through C-8) with the spaced wales being spaced apart by at least two intervening wales (W-2, W-3 and W-4). The inelastic yarn (I) and the elastic yarn (E) float across the intervening wales while the stretchable yarn (S) forms tucks extending across the intervening wales.

Abstract: A cam section block, a striping box actuator assembly, and a positioning device for a wheel nullifying cam are all secured to a plate mounted on the cam retaining ring of a circular knitting machine. A plunger of the striping box assembly and a plunger of the cam positioning device are operable by camming under the cam retaining ring, and the plate is readily removable from the machine with all components attached.

Abstract: A yarn changing device for use in a flat-bed knitting machine having a carriage. The yarn changing device provides a relatively simple but effective arrangement for repetitive, alternating selection of any one of three or more yarns for knitting operation upon such successive reciprocation of the machine carriage.

Abstract: A circular knitting machine has a rotating needle cylinder provided with cylinder needles disposed about the periphery of the cylinder and a plurality of yarn feeding stations at least some of which are provided with striping boxes. Each striping box has a plurality of yarn-holding members individually activatable for causing yarn from different ones of the yarn-holding members of the striping box to be fed to needles travelling past the striping box. According to the novel method, more than one of the yarn-holding members of the striping box of at least one of the feeding stations are kept simultaneously activated during at least part of a rotation of the needle cylinder so that each of at least some of the needles being fed yarn at such station during such part of a rotation will receive yarn from each of the more than one activated yarn-holding members.

Abstract: A yarn guide is controlled by a pair of resiliently biased pneumatically operated pistons arranged cooperatively to alternately exert a directional movement on said yarn guide in opposite directions. One of the pistons engaging with the yarn guide to arrest its movement, in the absence of a pneumatic impulse to either piston.

Abstract: A cylinder and dial circular knitting machine is provided with:1. a striping box that may feed a draw thread or yarn,2. adjustable placer and raise cams, and3. means for controlling the operation of such striping boxAnd cams so as to cause the machine to knit fabric separable at single courses of draw threads into strips of predetermined widths with locked and non-running edges.

Abstract: A circular knitting machine having a thread guide fixed to the machine is formed with a thread insertion slot, and a plurality of thread guiding eyes holding threads for insertion. A thread entrainment element is located below the thread guide, travelling synchronously with the progression of movement of the needles between idle and knitting position. The thread entrainment element has a segment projecting radially under the thread guide means, and formed with an inwardly, rearwardly inclined guide surface to entrain and insert threads held by the eyes on the thread guide means into the thread insertion slot when the respective eyes are in working position.

Abstract: A device for changing threads in circular knitting machines, the device having several thread-changing units each of which is assigned to a knitting system of the circular knitting machine. The units have several thread-changing fingers for guiding various threads which can be selectively led to a knitting zone. The thread-changing units have members which include devices for cutting and clamping threads. In accordance with the invention, the thread-changing member of each thread-changing unit is connected with an electrically operated preselector, and is mechanically operated in dependence upon this preselector.