Abstract: A novel process for producing yarns at high speed by drafting a sliver or roving of short fibers. The process dispenses with rings, travellers or spindles, and a single gas false twist member is effectively used. The process comprises leading a bundle of short fibers to said false twist member and feeding to the twisting zone of the bundle of short fibers an extremely fine multifilament yarn preferably in contact over a rotary body, at a sufficiently low tension and at a speed faster by 50-90% than the spinning speed of the bundle of short fibers so as to restrain the fiber bundle within one-directional spirals and two-directional composite spirals. The resulting composite spun yarn has a good touch because the fiber bundle has become non-twisted. By changing production conditions, the yarn can be formed into any desired shape from even yarn to nep yarn.

Abstract: A device for loading yarn collection tubes onto spindle rows of spinning machines and twisting frames. The device comprises a carriage which is moved horizontally at a constant speed along the spindle row. A magazine is disposed on said carriage and contains empty tubes in substantially horizontal position. A first conveyor formed by a succession of cup elements is moved on said carriage along a vertical path and conveys tubes from the magazine into a discharge position where said cup elements are rotated into a vertical position to discharge the tubes therefrom.

Abstract: A bi-component friction disc for imparting false twist to yarn to texture the yarn comprising an inner surface having a first portion of ceramic material surrounded by a second portion of polyurethane or rubber. Typically, one of these discs is installed on each end of a hollow tube, and two sets of tubes and discs are used in order to allow the yarn being textured to make four passes over the discs to impart the false twist.

Abstract: A twisting apparatus for light and heavy yarns has a conventional twister wherein the yarn packages are supported rotatably on a rotating flyer but is inhibited from rotation by magnets on the yarn-package holder and upright walls surrounding the yarn-package holder. The flyer is rotated at high speed so as to form a yarn balloon around the yarn-package. The walls surrounding the yarn-package holder form a square at their tops and a circle at their bottoms. When heavy-gauge yarns are being twisted an insert in the form of a cylindrical sleeve is fitted within the device to limit the balloon size. An elastomeric ring surrounding the lower portion of the outside of this sleeve is snugly engageable with the frustoconical lower surface of the interior of the surrounding walls so as to hold the sleeve centered in the apparatus.

Abstract: The present invention relates to methods of twist-plying a fibrous product. In accordance with the proposed method, applied to each of two fibrous ribbons is a pulsating torque created by a vortex of air of an invariable direction. Apart from the pulsating torque, each fibrous ribbon is constantly subjected to an additional torque of the opposite direction. The amount of the additional torque is less than that of the pulsating torque and is equal to 0.1 - 0.8 of its amount. As a result, each of the fibrous ribbons acquires a sign-variable twist. The fibrous ribbons are thereafter joined together and, while untwisting on each other, they become interlaced, thereby forming the finished product. This makes it possible to enhance the quality of the product, to reduce the end breakage thereof, and to improve both the stability and reliability of the process.

Abstract: An open-end spinning machine including a spinning rotor having walls which converge together at an angle of at least 40.degree. to define a collecting channel at the junction therebetween. A thread draw-off nozzle projects into the spinning rotor and has a curved thread contact surface. The radius of curvature of the thread contact surface is between 7.5 and 8.5 mm. Such enables yarn to be produced with a rotor speed of between 50,000 and 70,000 revolutions per minute.

Abstract: A thread guide construction for use in the production of twisted threads. The thread guide is composed of a plate arranged essentially horizontally and having at least three guide eyes arranged symmetrically to one another for a separate guiding of the threads which are to be twisted. A separating member is secured to the underside of the plate between and symmetrical to the guide eyes. The separating member has a width which is less than the spacing between the guide eyes and has a surface thereon converging from the plate toward a terminal location spaced from the plate. The surface is opposed to each of the guide eyes so that when a pulling force is applied to the twisted threads during a twisting operation pulling same away from the plate, the threads are normally free of engagement with the separating member and are in engagement with the surface during a time when the pulling force has been substantially reduced.

Abstract: A noise reducing washer for the spindle of a textile machine has a pair of outer hard resilient washers, for example, of nylon, and a soft washer, for example of rubber, sandwiched therebetween. The composite washers are adapted to be fit on the spindles above and below the machine frame.

Abstract: A high speed rotary body for false-twisting comprising a tubular body in the hollow portion of which a pin element is perpendicularly fixed. The yarn to be crimped is fed into the hollow portion, looped with one turn around the pin element and delivered to a take-up bobbin. The pin element is integrally formed with three portions i.e. a smaller cylinder, a larger cylinder at one of the ends of the smaller cylinder and a truncated conical portion at the other end thereof. The intersection of the smaller and larger cylinders forms a step. When the incoming yarn portion precedes to touch the step, this portion occupies the center of the tubular body so as not to balloon during the crimping operation.

Abstract: This invention relates to a novel spun yarn composed of staple fibers only and having the average number of fibers in cross section and the rate of yarn evenness being within a limited range, and a process for manufacturing the same directly from continuous multi-filament yarn.

Abstract: A method for producing a spun-like yarn simulating a staple yarn is described wherein continuous filament yarn is produced which has characteristics similar to a staple spun yarn. The unusual continuous filament yarn produced is made by a texturing process which involves the crimping of a continuous synthetic yarn followed by overfeeding to an air bulking means and thence to heat setting means. The preferred method utilizes false twist texturing of synthetic filaments such as polyester, nylon, cellulose acetate or cellulose triacetate and mixtures thereof with an air bulking jet interposed to act on the false twist textured yarn while it has a high residual torque and subsequently decaying said torque.

Abstract: Each station of a row on a multistation yarn texturing machine comprises a common support unit for all driven members of that station, the driven members being interconnected for synchronous operation by a transmission system which includes a coupling member such as a toothed belt, and the support unit being movable for engaging or releasing the coupling member from a single machine drive member common to all the stations of a row and preferably consisting of a shaft with toothed wheels for driving the coupling members.

Abstract: To prevent periodically recurring thickened portions of thread from open end spinning machines, a thread thickness sensing signal is conducted to a mono stable blocking multivibrator having an unstable blocked time just under, for example, ninety percent, of the time of pull off of thread during one revolution of the turbine, so that the distance of thread passing through the sensor during the unstable time is just slightly less than the circumference of the spinning turbine of the open end spinning machine. If other thickened portions result from a specific circumferential point of the turbine, resulting in periodic defects, the mono stable multivibrator will be triggered again and again; the trigger signals is summed, for example, by an integrator and if the sum of the pulses reach a certain value, a defect signal is generated, for example, stopping the machine. Before being applied to the mono stable multivibrator, the signals are preferably dynamically limited.

Abstract: A false-twist texturing spindle in which the yarn to be twisted may be automatically threaded in the spindle through a retractable tube that is longitudinally movable between the rollers or discs of the spindle, on an axis coincident with the axis of thread travel. The retractable tube is movable from an inoperative spindle mode, allowing yarn threading, to an operative spindle mode after threading, for yarn twisting.

Abstract: A composite yarn exhibiting heather dyeing capability is comprised of two groups of filaments composed of two differently dyeable polymers wherein filaments of one group are homofilaments of one polymer and filaments of the other group are of a substantially concentric sheath core structure with the sheath being of the other polymer and the core being of the same polymer as the homofilaments. The yarn dyes to give a heather appearance which is different from the appearance expected based on the polymer composition of the yarn.

Abstract: This invention makes possible the use of a very small pressure relief valve for protecting pressure gauges, thermometers, humidity indicators and other detectors from excessive pressure in an element in which the fluid is contained and of which the indicators must measure a characteristic. The pressure relief valve is located in an exhaust branch outlet from passages that connect the detector with the element in which the fluid is contained; and the relief valve has a housing with an inlet port of a cross-section much less than the cross-section of the passage from the element containing the fluid. This inlet port throttles the flow of fluid into the relief valve. By thus reducing the cross section of the inlet port, the relief valve can be as small and inexpensive as desired, commensurate with the flow required by the detector where the detector is of a nature requiring a flow of the fluid.

Abstract: A measuring head is used to measure a yarn characteristic while generating a continuous signal proportional to variations in the measured characteristic. The signal is multiplied by an identical second signal obtained either from a second measuring head located downstream of the first measuring head a distance corresponding to a predetermined periodic interval of yarn length (L) or by a time-delay of the first signal corresponding to the periodic interval (L). The multiplication of the signal deviations occurring at the periodic intervals, should such be present, produces a strong output signal indicative of the yarn irregularities. This output signal can be used to interrupt operation of the yarn processing machinery.

Abstract: The distributing device for supplying compressed air to the jet nozzles of swirl chambers relates to apparatus for making a self-twisted product. The distributing device comprises a stationary hollow housing with apertures and a passageway for supplying compressed air, and also a rotary distributing member of a cylindrical shape, in the form of a sleeve with a bottom, mounted in the internal space of the housing with a gap left therebetween, this gap permanently communicating with the compressed air supply passageway. The open end of the distributing member faces the compressed air supply passageway and, the member having passages made in the cylindrical wall thereof, periodically communicating through the apertures in the housing with the jet nozzles of the swirl chambers, to supply compressed air thereinto.

Abstract: The present disclosure is directed to an open-end spinning machine for the open-end spinning of textile fibres, in which there are provided a spinning element, a fibre opening roller, means for feeding fibres in the form of a sliver to said opening roller, and fibre conveying means for conveying in discrete form to said spinning element fibres opened by said opening roller. The opening roller comprises a boss portion, an end wall portion extending radially outwardly from said boss portion at one end thereof, and a cylindrical shell portion extending from said wall portion over and in coaxial relation to said boss portion to form an annular cavity between the outer surface of said boss portion, the inner surface of said wall portion and the inner surface of said shell portion.

Abstract: An automatic probe feeding, setting and withdrawing apparatus includes a probe container case provided with a probe dispensing mechanism for dispensing individual probes to a probe transfer mechanism. The probe transfer mechanism has a motor-driven probe push member provided at one end of a carriage board formed with a V-shaped channel in its surface. The probes are transferred to a probe setting mechanism which has a movable block capable of making sliding movement through a given stroke by the operation a cylinder on a support board mounted for pivotal movement by the operation of a cylinder. The probes are moved from a horizontal to a vertical orientation by this probe-setting mechanism. The probes are so positioned that they can be grasped by a probe holding rod and can be appropriately inserted into a furnace for measurement of conditions therein. Thereafter, with the probes removed from the furnace, they are transferred to a probe withdrawing and recovering mechanism.