Abstract: A duct for feeding fibres to a spinning chamber operating in accordance with the method of pneumatic spinning in a stationary whirl.As it is seen in the drawing the area of outlet 6 of duct designed for feeding of loose fibres in a stream of air from a fibre opening-feeding device to a spinning chamber is smaller than the sum area of outlets 4 of main nozzles in spinning chamber 3, said area being also smaller than the area of inlet 5 of the said duct. The length of the said duct is greater than the length of processed fibres.

Abstract: A bulked polyester continuous filament heteroyarn composed of uncrimped filaments and helically crimped filaments, and having alternating compact and loopy zones. The helically crimped filaments include homofilaments (e.g., false-twist bulked) and heterofilaments.

Abstract: A textile yarn processing machine, such as a twister, spinning frame or the like, having spindle assembly stations for the processing of yarn and each including a spindle assembly for carrying a package of yarn to be withdrawn and processed and which produces a rotating balloon of the yarn around the package as it is withdrawn therefrom, and a hollow balloon restrainer device having an inside wall surrounding the package of yarn and the balloon of yarn produced for contact by the rotating balloon of yarn to limit the size thereof during such yarn processing, is provided having the following improvement. Anti-friction means forms at least a portion of the inside wall of the balloon restrainer device, preferably a plastic based sinter material, for providing a reduced coefficient of friction surface for contact by the rotating balloon of yarn processing for reducing friction damage to the yarn being processed.

Abstract: A multifilament yarn of improved bulkiness is provided. The yarn is composed of two portions, i.e., a relatively dense portion and a blooming, relatively sparse portion, alternately occurring along the length of the yarn. The relatively dense portion is in a partially twisted state and individual filaments in this portion are irregularly entangled and cohere to a greater extent than in the relatively sparse portion. The relatively dense portion has protruding filament ends on the yarn surface in a larger number than the relative sparse portion.The yarn is prepared by first passing a multifilament yarn through a high velocity fluid jet nozzle and then subjecting it to a combination of the steps of false twisting and frictional contact.

Abstract: Device for withdrawing full cops from spindles in a drawing-twisting frame, transfering said cops to a predetermined station and inserting empty cops on said spindles, comprising a system of guides along which the full cops from the drawing-twisting frame are fed to a station for withdrawal thereof, and along which the empty cops are fed to the drawing-twisting frame, means being provided for transferring the full cops from the drawing-twisting frame to said guides and means for transferring the empty cops from the guides to the drawing-twisting frame.

Abstract: A machine for the false twist texturing of textile threads wherein the false twist textured threads are subjected to a second heat treatment, and including fluid pressure means for transporting the thread through the second heat treatment section of the machine to the thread take-up position to facilitate thread-up of the machine.

Abstract: When spinning is to be started or restarted after interruption, an operator places a combination spool support and electronic pack on tracks at the spinning station, locates the pack in spool-supporting position, electrically connects the pack with a spinning station connection, draws a predetermined length of thread from the takeup spool, inserts it into the drawoff tube, and actuates a switch on the pack. The pack contains an electronic timing circuit, which sequentially effects starting of the fiber supply to the spinning chamber, and, after a predetermined time delay, effects reengagement of the thread takeup spool with its drive roller.

Abstract: Method of spinning threads consisting at least partially of synthetic fibers comprising stretch-breaking continuous filaments to obtain fibers having staple length distribution similar to that of natural fibers, crimping said fibers, and open-end spinning them into thread. The invention includes machinery for carrying out this process and its product.

Abstract: Yarn is continuously supplied to a measuring system with an applied twist of at least 100 turns per meter. A beam having a continuous spectrum from the visible region to the near-infrared region is impinged upon the yarn and measurements are taken on the beams reflected from the yarn. The refected beams are divided into two parts. The characteristics of the near-infrared region are applied to one part, and luminosity characteristics are applied to the other. The ratio of intensity of the former to that of the latter is determined. This ratio corresponds to the uniformity of physical characteristics in the direction of the length of the yarn.

Abstract: A false-twist device comprises two axially parallel rollers rotatable about their axis for supporting a twist tube in the cuneal throat formed thereby, driving means for simultaneously driving the rollers, at least one yarn deviating element for feeding a yarn end to, or removing it from, the twist tube at a predetermined angle relatively to the tube axis, and means for holding the tube in place when no yarn is present in the tube.

Abstract: An open-end spinning machine rotor is formed from sheet metal as an annular body. The body has an interior fibre collecting surface on which discrete fibres are continuously deposited and from which the tail end of a yarn is continuously drawn-off. The body is shaped to provide first and second portions converging to a region of maximum diameter at which is located the interior fibre collecting surface. In this way, the internal fibre collecting surface is free from surface imperfections which would adversely affect the operation of the rotor.

Abstract: To start-spin a thread with open-end spinning, the end of the thread is inserted back into the spinning rotor against the normal direction of draw and placed on a ring of separated fibres. In order to simplify placing the thread on the ring and to improve the strength of the start-spinning point in the thread, before being placed on the ring of fibres, the returned end is freed of the twist in the thread produced during spinning, causing this end to be in a condition which corresponds generally to the condition of the ring of separated fibres.

Abstract: A method of making compacted steel wire strand having a central core wire and at least one layer of wires wound around the core wire in which uncompacted strand is made by pulling the wires through a closing die and the wire is then compacted in not more than two reducing dies the dies being arranged so that the wires forming the strand are free to move relative to one another to prevent birdcaging during the reduction in area of the strand to compact it.

Abstract: A false twisting apparatus having three spindles supporting over-lapping friction discs and having a means for feeding a thread between the friction discs where it will be false twisted and into a balloon preventing member is provided with an improved means for threading the apparatus by moving a thread into position between the friction disc comprising a thread guide member on an arm supported by a rotatable shaft with the guide member above the friction disc, the rotatable shaft being rotatable from a position where the guide member is disposed above the gap between the edges of the friction disc to where the guide member is disposed outside the friction disc and a thread slide member supported on a shaft and projecting inwardly between longitudially spaced friction discs, the slide member having arcuate shaped edges over which the thread can slide as it is moved by the thread guide member into or out of the gap between the friction members.

Abstract: A textile false twist texturing machine having improved thread-up comprising for each thread working position means for removing fumes given off in the heaters and means for threading up and guiding the thread in the upper part of the machine, and wherein the means for threading up and guiding the thread extends continuously from the outlet of the first thread delivery means to the entry of the first heater, and is coupled at the entry into the first heater with the fume removal means.

Abstract: A woven or knitted fabric to be employed for ion exchange purposes comprises filaments of a fluorinated polymer with sulfonyl containing pendant side chains either in ionic or nonionic form whereby the filaments are supported by higher strength material prior to a weaving or knitting operation. Thereafter the supporting material is desirably removed. The final fabric may be woven so that the fabric is essentially impermeable to passage of fluids through fiber interstices or in an alternate manner is woven or knitted to allow controlled passage of liquid through fiber interstices. The polymer employed in the fabric possesses permselectivity giving desirable performance in electrolytic as well as membrane ion exchange and reverse osmosis devices.

Abstract: An apparatus for false twisting a thread having three rotatably mounted spindles each carrying a pluralilty of friction discs which overlap each other and means for passing a thread along a zig-zag path between the spindles and over the edges of the friction discs is provided with at least one friction disc having a twist stop edge which interrupts the helical path of the thread in a kink-like manner at the exit end of the path of the thread.

Abstract: An open-end spinning machine system containing a plurality of spinning units, the components of each unit including a spinning turbine, a breakup roller, a feed roller, a yarn extraction device and yarn wiping apparatus, is controlled during stopping and subsequent restarting by an automatic control system which is operated by switching members in such a manner that, during stopping of the system, the turbine, feed roller, yarn extraction device and winding device of each unit are first permitted to decelerate in unison, in a free rundown manner while the rotating speeds remain within the range permitting yarn spinning to continue, and these components are positively braked only when their speeds approach the lower limit of such range, while during restarting of the system, the yarn extraction device and the yarn winding device of each unit are caused to rotate through a selected distance in the direction opposite to their normal operating direction for feeding a fixed length of yarn back into the associated

Abstract: This invention relates to a process for the continuous manufacture of smooth or textured multifilament yarns from synthetic thermoplastic high molecular weight polymers by the spin stretching or spin stretch texturing processes, wherein the unstretched multifilament yarn is passed from the spinning machine to the stretching or stretch texturing machine through tubes made of metal, plastics or glass, although other materials may also be used, e.g. ceramics.

Abstract: Producing effect yarns using the false twist principle by varying the twist density in the heater zone to alter the degree of bulk and thus the texture along the length of the finished yarn.