Abstract: In a procedure for the provision of pattern warps, different threads 12 are pulled off by a rotating thread guide from a circulating thread creel 27 circulating synchronously therewith. The threads are laid off on parallel transport bands oriented axially around the circumference of a non-rotating drum. At predetermined times unneeded threads 12 are connected to the thread guide 11 via a clamp and cut between the clamping point 19 and the drum. Upon renewed demand, the free thread ends 22 are held stationary and the clamp is opened. In a warp knitting machine in which this procedure can be carried out, every thread guide 11 is provided with an orbiting clamping point 19. A cutting arrangement 20 serves for cutting the threads 12 between the clamping point 19 and the drum 1. On the machine frame there is provided a stationary holding arrangement for the free threads ends. In this manner it is possible to create a plurality of different patterns in a relatively short time.

Abstract: The arrangement controls thread tension in a spool creel with a brake rotor (brake drum 4) for each spool holder (1). A braking element (brake band 5) operates therewith and is biasable by a tensioning lever (8) which takes an angular setting dependent upon the thread tension and the force of gravity. A fluid pressure activated biasing arrangement 13 influences the tensioning lever 8 at each spool holder 1. The fluid pressure is commonly adjustable for all of the biasing arrangements 13. In this manner a general changing of the thread tension can be combined with control of individual thread tension.

Abstract: A warp knitting machine having a main shaft has at least one bar mounted to reciprocate in accordance with a predetermined schedule. The machine also has an electrically activated drive arrangement with a body made of a material that can alter at least one of its dimensions in dependence upon the magnitude of an applied field. The machine also has a control arrangement coupled to the drive arrangement for providing an electrical signal thereto, in accordance with the predetermined schedule and in dependence upon the angular displacement of the main shaft. This electrical signal can establish the applied field with a predetermined timing within each displacement step of the one bar.

Abstract: Arrangement (15) for adjusting the tension of a thread which is pulled from a spool by means of a thread take-off arrangement, has a thread measuring device (23). This thread measuring device, positioned sequentially in the direction of thread travel, can determine thread tension. Also included is a driven drum (17) whose effective circumferential speed is alterable in the same sense as the measured thread tension. In this manner, it is possible to achieve very small thread tensions.

Abstract: Threads are warped with an axially moveable slide onto a drum having a cone, into a plurality of successive warp bands. The threads are warped for a first band based on a predetermined advancement schedule for the slide. The warping of the first band, after a predetermined initial phase, is performed by: (a) measuring an aspect parameter, signifying the form of the winding of the first band, (b) correcting the predetermined advancement schedule of the slide based on a comparison of the aspect parameter and a targeted parametric value to compose a corrected advancement schedule, and (c) storing a successive plurality of descriptive parameters signifying the evolving form of the winding of the band, when successive revolutions of the drum meet a predetermined drum schedule.

Abstract: A process for the continual comparison of the actual-value relationship with the target-value relationship of the wound diameter of a warp beam and the number of revolutions executed by said beam, said values being continually transmitted. There is also provided a warping arrangement for the foregoing procedure in which the warp sheet path to the driven warp beam is provided with a turning roller, and comprises a measuring arrangement for transmitting the warp beam diameter and a rotation counter. The object of the invention being to provide in a simple manner, a number similarly wound beams. Thus, without the intermediation of a thread tension measuring means, the difference between the actual-value relationship and the target-value relationship is continually evened out by control of the feed speed of the thread sheet that the driven turning roller is provided with a slip-preventing circumferential surface.

Abstract: A process changing of a beam for taking up a thread sheet on a warping arrangement in which a first fully wound beam is discharged from a winding position, comprising the steps of loading an un-wound second beam into the winding position, bringing the thread sheet into contact with the second beam, attaching the thread sheet to said second beam and severing said thread sheet from the first beam while the first beam is still held in the warping arrangement.

Abstract: An arrangement for the entanglement of multi-filament thread can entangle warp threads travelling from spools on a creel to a warping machine. This arrangement has a jet arm adapted to communicate with a source of compressed air. The arrangement has a plurality of adjacently placed plates. Each adjacent pair of the plates has a separating element located between each. These plates are positioned to provide between them a plurality of parallel channels. Each of these channels is shaped as an outwardly directed slot having side walls formed by a corresponding adjacent pair of the plates. The slot has a base formed by the separating element corresponding thereto. For each adjacent pair of the plates, at least one of them includes: (a) a reservoir adapted to communicate with the source of compressed air, and (b) a bore in the side wall communicating with the reservoir for acting as a perpendicularly directed air jet.

Abstract: In an arrangement for the stretching and warping of thermoplastic warp threads, in particular polyester threads, there is provided an arrangement comprising a set of feeding rollers, a heating arrangement and a set of take-off rollers. The latter set of rollers has a higher circumferential speed than the former. Between the two sets of rollers there is provided at least one deflecting roller. The circumferential surface of this deflecting roller is divided into a heatable section and a relatively non-heatable section. The deflecting roller is rotatable from an operating position, in which the deflecting surface comprises the heatable surface portion, into a rest position wherein the deflecting surface presented is the non-heatable portion. In this way, the length of the thread exposed to heat can be extended between the feeding and take-off rollers without overheating of thread during the stopping of the arrangement. Other aspects of the mode of the process are also described herein.

Abstract: In the process for the control of the warp speed during direct warping, the winding diameter is determined by a contactless measurement. The actual thread speed is determined from the winding diameter and the current warp beam rate of rotation. A direct warping machine for carrying out this process has a transducer for measuring the winding diameter. This transducer is located proximate to but not in contact with the circumference of the winding for measuring the winding diameter. Also included is an arrangement for the determination of the rate of rotation of the warp beam. Also, a computer can calculate the thread speed from the above outputs that correspond to winding diameter and rate of rotation.

Abstract: The arrangement can transfer with respect to a beam, elastic threads having a predetermined initial extension. The arrangement has a first device for imparting a first thread speed to the threads being transferred. Also included is a controller and at least one tension roller, the latter rotatably mounted between the beam and the first device. The roller can impart a second thread speed to the threads and can stretch them. The threads at the beam are transferred at a third thread speed. Among the first, second and third thread speeds the two furthest upstream have an adjustable speed ratio. The controller can measure the tension of the threads traveling to the tension roller. This controller is operable to alter the speed ratio in response to the tension of the threads, to hold this tension at a predetermined magnitude.

Abstract: A slitting apparatus for separating face-to-face pile fabrics, double plush ware or the like, into two separate panels includes a closed loop feedback arrangement that maintains equal tension on both panels thereby permitting the cutting knife to sever the double plush ware exactly in the center thereof reducing panel rejects. The feedback arrangement is of the analog type thereby insuring almost instantaneous and continuous control of the tension of both panels.