Abstract: A pneumatic spinning apparatus for producing yarns having characteristics equal to those of ring spinning yarns. In the spinning apparatus, a guide member is mounted with an extreme end thereof faced to an inlet of a spindle within a nozzle block which exerts a turning air stream on a bundle of fibers moved out of a draft device, and a distance from the spindle inlet to a nip point of front rollers of the draft device is defined in a specified range.

Abstract: For a changing of spool tubes and packages at an individual spinning unit of a spinning machine having a plurality of such spinning units, it is provided that, when a given filling ratio is reached, the yarn which continues to move to the spool package is disengaged from a cross-winding yarn guide and is subsequently, in the form of final windings, wound onto an area limited in longitudinal direction of the spool package onto the spool package.

Abstract: A spinning apparatus in which moisture can be applied to spinning yarn by a simple apparatus. In a spinning apparatus wherein a yarn is manufactured by introducing a bundle of fiber into a passage for a bundle of fiber of a spindle being rotated at high speeds, a device for supplying water to a center portion of a yarn is provided to face an inlet of the passage for a bundle of fiber of the spindle.

Abstract: In a case of a spinning machine having a plurality of spinning positions and having a package spool changing arrangement or doffing arrangement which can be applied to the individual spinning positions, it is provided that the doffing arrangement comprises devices for the winding-off of the yarn wound onto a full X-package and for winding this yarn back onto a predetermined area of the X-package in parallel layers and/or layers disposed above one another.

Abstract: In a spinning machine for pneumatic false-twist spinning, a plurality of spinning points are provided which are each equipped with one drafting unit. Two air nozzles are connected behind a pair of delivery rollers of the drafting unit and are pivotable around a separate swivel shaft and are connected by a restricted guidance in such a manner that, by an actuating movement, they can be moved into servicing positions which deviate from one another.

Abstract: In the case of an arrangement for pneumatic false-twist spinning having air nozzles arranged behind a pair of drafting units, it is provided that the air nozzles lead into a space which is designed as a V-shaped groove which, together with a covering, is completed to form a yarn guiding duct which leads from the mouth of the air nozzles to a yarn outlet opening. The yarn guiding duct is provided with a cross-sectional enlargement in the area adjacent the air nozzle outlets to provide for uniform flow in the duct.

Abstract: An apparatus for producing of real twist-like yarns wherein a guide member is provided within a nozzle block for exerting a turning stream on a fiber bundle moved out of a drafting device and an extreme end of the guide member is directed at an inlet of a rotary or stationary spindle.

Abstract: In an arrangement for pneumatic false-twist spinning having a drafting unit, a pneumatic false-twisting device which follows and a withdrawal device which follows, it is provided that a roller of the pair of delivery rollers is constructed as a hollow roller which has an air-permeable shell surface. In addition, a suction roller is provided between the pair of delivery rollers and the false-twisting device.

Abstract: A spinning apparatus which imparts a turning air stream to an untwisted short fiber bundle drafted by a draft device to twist it to produce a spun yarn. A guide member supporting body having an extreme end projected conically is secured within a nozzle block for imparting a turning air stream to a fiber bundle moved out of a draft device, and the guide member supporting body having one side cut to form a gap adjacent to the nozzle block.

Abstract: In the case of a false-twisting nozzle for pneumatic false-twist spinning having a nozzle body formed of one or several segments, it is provided that, for the reduction of the cross-section of the outlet opening of the blow duct, at least one part of its interior wall is provided with a coating.

Abstract: In the case of an arrangement for the intermediate storage of a double yarn formed of two yarn components, a suction chamber is provided which has an air permeable depositing surface for the double yarn. In addition, an air nozzle is provided at the inlet side of the suction chamber which receives the double yarn and delivers it to the suction chamber.

Abstract: This is disclosed a yarn re-structuring method and apparatus for modifying the structure of a spun yarn in order to improve its properties, in which the yarn is subjected to the action of successive false twisters in order to impart a permanent modification to the structure of the yarn, in which there is a tandem arrangement of first and second oppositely acting false twisters, with the first false twister acting to at least partially unwind the origianl twist in the yarn and the second false twister acting at least partly to restore or to increase the original twist in the yarn. This action on the spun yarn improves the properties of softness and bulkiness, while retaining acceptable performance of the yarn in other characteristics.

Abstract: In an arrangement for false-twist spinning, a yarn guiding element is arranged between a drafting unit and a false-twisting nozzle which moves in the travelling direction of the yarn at a speed which is higher than the delivery speed and the withdrawal speed.

Abstract: An apparatus for producing a spun yarn comprising drafting units, delivery rollers and spinning devices disposed between the front rollers of each drafting unit and the corresponding delivery rollers. The spinning device guides a sliver drafter by the drafting unit along a substantially straight line and blows air against the running sliver so that some of the component fibers in the circumference of the sliver are fluffed out and caused to wind around the fibers forming the core of the sliver, and the circumferential speed of the delivery rollers is set to be equal to or higher than that of the front rollers.

Abstract: In the case of a process for the splicing of the ends of two double yarns during a piecing operation at a spinning unit, it is provided that either the ends to be spliced are prepared such that the spliced point is a thin point, or that the spliced double yarn is pneumatically strengthened in the area of the spliced point.

Abstract: A method and apparatus for the intense crimping of a multifilament yarn in a stuffer box is disclosed, and wherein a false twist is imparted to the advancing yarn at a location upstream of the stuffer box, and with the intensity of the false twist being periodically or aperiodically varied.

Abstract: An air spinning device with an injection nozzle and a twisting nozzle is adjusted to the highest possible delivery speed for a desired yarn quality by predetermining the desired spinning tension of the yarn. According to the predetermined spinning tension, the highest possible delivery speed is regulated by changing the injection nozzle pressure and/or the spinning draft. Several spinning stations are installed on the air spinning device. At the spinning station, a measuring device to determine the yarn quality is installed between the twisting nozzle and the draw-off rollers. The measuring device is connected to adjusting devices of at least one spinning station. When the yarn quality is changed, the measuring device, together with the adjusting devices influences at least this spinning station.

Abstract: An improved nozzle texturizer providing for twisting as well as kinking of extruded synthetic fiber material strands is disclosed. Apertures for introduction of heated compressed air into a longitudinally extending bore of the texturizer body at a location below the upper region of the bore are offset longitudinally with respect to one another to create a swirling action upon introduction of compressed air, causing the strands to become twisted, in addition to being kinked in a downstream nozzle region. Passageways into the apertures are disposed at angles of 43.degree. to 45.degree. with respect to the bore, much steeper than in prior devices, to further contribute to the swirling action. The body is made up of a pair of mating blocks with the bore and other apertures defined therein. In order to prevent warpage in use, the texturizer may be made of heat-treated, hardened steel.

Abstract: Method and apparatus are disclosed relating to forming yarn by "vacuum spinning". A spinning nozzle assembly is provided which includes two axially aligned sections, each formed with a through passageway. Adjacent facing surfaces of the sections define a continuous radial slot through which air flow may be directed. The axially aligned sections of the nozzle are, in one exemplary embodiment, telescopically received within a sleeve mounted for rotation within a housing. The nozzle sections may be adjusted axially relative to each other to alter the dimension of the radial slot as desired, for example, in accordance with a predetermined yarn count.

Abstract: Interlacing means are provided for the interlacing of multifilament yarns exhibiting a yarn channel. At given distances from the entrance and exit openings forming the yarn channel, yarn guides are so arranged that, with the supply of compressed air shut off, the yarn is laid onto the yarn channel so that it extends parallel to its longitudinal direction, and that the straight yarn sections, which are located between the entrance and exit openings of the yarn channel and the yarn guides, are inclined at acute angles to portions of the geometric longitudinal axis of the yarn channel. Furthermore, the blow angle of the blow nozzle is smaller than 90.degree.. The length of the yarn channel equals for smooth yarns maximally 40 mm and for texturized yarns maximally 30 mm. There results exceptionally high yarn advance speeds and a particularly good vortexing of the yarn.

Abstract: An apparatus for producing a spun yarn comprises a rotary pipe having a sliver path for passing therethrough a sliver forwarded from a front roller of a draft device, a rotary plate formed in an integral relationsip at a location of the rotary pipe spaced from an entrance of the rotary pipe, and a casing for covering the rotary pipe and the rotary plate. The casing has a guide path formed therein for introducing and guiding a sliver from the front roller to the entrance of the rotary pipe and guide path has a dam member disposed therein for introducing a sliver of a substantially flattened configuration forwarded from the front roller.

Abstract: In the case of an air nozzle for pneumatic false-twist spinning having several parts arranged behind one another in moving direction of the yarn, it is provided that the part which is arranged behind the part containing the compressed-air ducts, in moving direction of the yarn, is made of a harder, more wear-resistant material and has a smaller diameter than the preceding part.

Abstract: A winding apparatus which includes a plurality of yarn supply package station for holding a plurality of packages of multifilament yarn, a process station for receiving yarns from the yarn supply packages and processing the yarn, and a take-up package. The improvement comprises a yarn randomizing device positioned downstream from the supply packages and upstream from the processing station for intermixing filaments within a single yarn and among the plurality of yarns in a random and irregular manner before delivery of the yarns to the processing station thereby preventing patterning in the processed yarn. In one embodiment the randomizing device comprises a air vortex and in another, a rotating beater.

Abstract: To improve the efficiency of a rotating air layer produced by an air injection nozzle and rotating in a substantially cylindrical space, the rotating air layer being intended to rotate a twisted fiber structure introduced through an inlet duct, there is provided a tube extension at the inlet duct. This tube extension forms a guide for the air flow injected tangentially and at an inclination by the air injection nozzle with respect to the direction of travel of the twisted fiber structure. As a result of this guide, the rotating air layer can form before it engages or contacts the twisted fiber structure. As a result there is increased the rotation of the engaged twisted fiber structure per unit length thereof, resulting in increased strength of the twisted fiber structure and the yarn ultimately produced therefrom with low air consumption.

Abstract: A spinning apparatus comprising a drafting device, an air jet nozzle and a false twisting unit including a pair of endless belts lying in surface contact with each other at a yarn nip point, the drafting device, air jet nozzle, and false twisting unit being located in a path of yarn travel in the order named, the air jet nozzle and the false twisting unit being both movable away from the path of yarn travel, the air jet nozzle and the false twisting unit being movable to and away from each other.

Abstract: Vacuum spinning of yarn produces yarns having good properties, and which may have a wide variety of different effects and constructions. A core filament yarn may be fed into operative association with a nipped sliver or roving, and then fed to a perforated rotating hollow shaft operatively connected to the vacuum. The core filament yarn may be a full stretched textured yarn, which is placed under tension and while under tension is dragged over a sharp edge of nonconductive material, and after the tension is relieved develops crimp. This causes individual fibers to be repelled, and provides for intermixing of the nipped sliver or roving fibers and the core filament yarn fibers. Alternatively the filament yarn may be acted upon by draft rollers before the entrance to, and after the exit from, the hollow rotating shaft, to apply a force that breaks up to about 20% of the fibers. The yarns produced utilizing the broken fibers has a spun-like appearance.

Abstract: In the case of a process and an arrangement for pneumatic flase-twist spinning having at least one pneumatic false-twist nozzle arranged between a drafting roller device and a withdrawal device, it is provided that the reversing of the twist applied to the sliver by the false-twisting nozzle is at least partially prevented and that fiber ends are spread away from the sliver in the area having an at least reduced twist. In certain embodiments, it is provided that the sliver is only prestrengthened by means of the false-twist spinning and is finished by a subsequent spinning or twisting process.

Abstract: A device for producing spinning yarn including a rotary pipe having a sliver path through which a sliver coming out from a front roller pair of a draft device is passed, a rotary plate formed integrally with and spaced from the entrance of the rotary pipe, and a casing surrounding the rotary pipe and the rotary plate. The casing has formed therein an injection nozzle which is opened obliquely toward the entrance of the rotary pipe for injecting whirling air, an air relief hole formed adjacent the rotary plate, an air whirling chamber in which air injected from the air injection nozzle whirls at a high speed, and an air relief chamber in communication with the air whirling chamber and having a gradually increasing volume.

Abstract: Fiber material to be spun is presented to drafting equipment in the form of a fiber sliver and is subjected to pre-stretching and main stretching in such drafting equipment. While being stretched, the fiber sliver is gathered together to a minimum width which amounts to at least 1.5 times the diameter of a torsion device to be used with the sliver. After being thus gathered together, the fiber sliver is not further gathered together before having torsion imparted thereto while such diameter is maintained. The width of a condenser situated upstream from the main stretching field amounts here to at least 1.5 times the diameter of a pneumatic torsion device situated downstream from such field. The injector component and torsion component of such torsion device are of identical diameter, from their intake opening to their outlet opening. In this way, hairy and soft yarns, similar to ring yarn, are produced.

Abstract: To control the yarn quality of a yarn produced by a textile machine, particularly a false-twist jet spinning apparatus, there is provided at the end of the spinning operation, however, upstream of the pair of withdrawal rolls for the outfeed of the produced yarn, a yarn tension measuring device. Upon falling outside of a predeterminate yarn tension tolerance or tension range the yarn tension measuring device controls operation of the false-twist jet spinning apparatus such that, as required, there is accomplished an appropriate increase or decrease of the yarn tension of the yarn produced by the false-twist jet spinning apparatus. Alteration of the yarn tension can be achieved, for instance, by varying the blowing intensity or energy of the air utilized for the spinning operation as well as by varying the angle at which there is blown in the air used for the spinning operation or by varying the rotational speed of the delivery rolls which deliver the formed yarn or by selected combinations of these measures.

Abstract: In the case of an air nozzle for pneumatic false-twist spinning having a yarn channel formed of at least two segments and having at least one compressed-air duct leading into the yarn channel, it is provided that for the formation of each compressed-air duct, a groove is worked into one of the segments that is open in the direction of the contact of the other segment and that is covered by the segment that follows. To accommodate selective changes in the compressed air duct configuration the segments are replaceable parts that are clamped by screw threaded nozzle housing parts.

Abstract: A method and apparatus for modifying a spun yarn includes first storage or processing equipment for the yarn, subsequent storage or processing equipment for the yarn spaced some distance from the first storage or processing equipment, a path of travel for the yarn defined between the two sets of equipment, and a false untwister device located along said path of travel for imparting a false untwisting process to the yarn, the yarn subsequently reverting at least partly to the true twist originally present in the yarn, whereby the resulting yarn structure has a very much softer handle than was present prior to the false untwisting step.

Abstract: A glass fiber bulk strand roving that is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another for form a composite entangled structure. The roving of the present invention is made by a process that uses a finger wheel to form axially extending loops in strands and a co-axial spinner with an inlet that is positioned above or below the finger wheel.

Abstract: A method and apparatus for the manufacture of a glass fiber bulk strand roving which is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another to form a composite entangled structure. The roving which is produced by the method and apparatus of the present invention is made by a process that uses an array of inwardly projecting fingers to form axially extending loops in the strands and a spinner with an inlet that is positioned adjacent the fingers.

Abstract: In the case of an arrangement for pneumatic false-twist spinning having an intake nozzle and having a false-twist nozzle, it is provided that air guiding means are connected to the intake nozzle that discharge outgoing air of the intake nozzle that is first directed toward the false-twist nozzle, with at least one flow component that is directed against the transport direction of the sliver.

Abstract: A glass fiber bulk strand roving that is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another to form a composite entangled structure. The roving of the present invention is made by a process that uses a finger wheel to form axially extending loops in strands and a spinner downstream of the finger wheel.

Abstract: Spun yarns are subjected to the vortex action of an impinging, circularly rotating fluid to lay down extending staple fibers against the yarn body while causing the yarn path to balloon and are then contacted with a melt size presented on a slower moving grooved melt size applicator. As a result of the ballooned yarn path, the yarn wipes melt size from the sides and bottom of the groove, giving the yarn a smooth, substantially continuous coating on its outside surface. Spun yarns so treated may be successfully woven as filling yarn on a water jet loom and knit as the warp yarn or as laid-in yarns on a knitting machine without excessive lint accumulation.

Abstract: For improving spinning results, a sideways limited swarm of fibers (11) is applied tangentially at the mantle of a rotating perforated drum (3) whose interior is supplied with suction air, is transported further on this drum (3) in the peripheral direction by the action of suction air, then is clamped between drum (3) and a contacting clamping element (20), and is continuously sucked out from the clamping line (23) by a pneumatic spinning device (27), and transformed to a thread (28).

Abstract: Vacuum spinning of yarn produces yarns having good properties, and which may have a wide variety of different effects and constructions. A core filament yarn may be fed into operative association with a nipped sliver or roving, and then fed to a perforated rotating hollow shaft operatively connected to the vacuum. The core filament yarn may be a full stretched textured yarn, which is placed under tension and while under tension is dragged over a sharp edge of nonconductive material, and after the tension is relieved develops crimp. This causes individual fibers to be repelled, and provides for intermixing of the nipped sliver or roving fibers and the core filament yarn fibers. Alternatively, the filament yarn may be acted upon by draft rollers before the entrance to, and after the exit from, the hollow rotating shaft, to apply a force that breaks up to about 20% of the fibers. The yarns produced utilizing the broken fibers has a spun-like appearance.

Abstract: Vacuum spun yarn is produced that has strength property approaching that of ring spun yarn, and significantly greater than air jet spun yarn, and may be produced at speeds greatly in excess of production speeds for ring spun yarn. An elongated hollow shaft has a through-extending passageway from a first end to a second end thereof, with a portion of the shaft adjacent the first end being perforated (e.g. four equally spaced perforations). The perforations shaft in the direction of the second end from the through-extending passageway, and a generally spherical vacuum reservoir is formed in the shaft in communication with the passageway and perforations. The portion of the passageway between the shaft first end and the vacuum reservoir is significantly larger in cross-sectional dimension than the portion of the passageway from the vacuum reservoir to the second end of the shaft.

Abstract: Textile slivers tend to loose their cohesion when travelling over long distances from one piece of storage or processing equipment to another such piece of equipment. This problem is overcome by subjecting the sliver to a false twisting process during its travel, desirably by a pneumatic false twister located immediately adjacent to the sliver-receiving equipment.

Abstract: Positive twist control and a gentle action on the yarn are provided by a vacuum texturizing process for yarn. Single filament and multi-filament yarns can be processed, including fine denier filaments and/or weak thermoplastic filaments. Yarn is fed by feed rolls to a heater block and then to the generally axially through-extending passageway and a spindle perforated cylinder. The spindle is mounted for rotation about an axis, and is rotated at a speed of several hundred thousand rpm, while a vacuum in the range of about 8-12 inches of mercury is applied to the exterior of the cylinder. The force of the vacuum holds the yarn against the interior wall of the passageway so that each rotation of the cylinder causes a twist of the yarn, which is backed up to the heater and set in a semi-permanent, false twist configuration. The yarn is withdrawn from the cylinder by output means, at which time the twist relieves itself and a textured, bulk, stretch-type yarn is produced.

Abstract: The present invention provides a mixing head for devices for joining textile threads with the aid of compressed air, for use indifferently for joining short-fibre threads and long-fibre threads, in both the cases perfect joints being obtained, both as regards their tensile strength, and as regards their aesthetical appearance, by being free from thickenings and undesired protrusions at the sides of the same joints.

Abstract: The present invention relates to a vortex air nozzle for yarn spinning from staple fibers, comprising an outgoing pair of drawing rollers, next to which is located an inlet chamber for the formation of free tails of fibers, with decreasing flat cross-section and inner grooved channels, ending with a cylindrical part, connected to the outgoing twisting chamber, supplied with tangential channels for air feeding, wherein in the inlet chamber for the formation of the free tails of fibers. The grooved channels are laterally formed in a drawing plane and reach the cylindrical outgoing part, as in the inlet chamber enters part of the circumferential surface of the lower drawing roller, as the cylindrical outgoing part is enveloped by the outgoing twisting chamber, which tangential openings are concentrically formed above the said cylindrical outlet part.

Abstract: An apparatus for manufacturing spun yarn comprising an air jet nozzle and a belt type twisting device, the nozzle having a fiber bundle outlet facing the twisting device and including a fiber bundle guide which is connected to the fiber bundle outlet and has a rear end located close to the intersection of the two belts defining the twisting device.

Abstract: The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a body member containing at least one substantially spherical recess for receiving a substantially spherical air jet or blow nozzle element selectively movable in predetermined directions to provide two-dimensional adjustability thereof. Due to this selective movability of the substantially spherical air jet or blow nozzle element, there exists the possibility of controllably moving the air stream issuing from the air jet or blow nozzle element so as to interlace the filaments of the multi-filament yarn. The air stream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn.

Abstract: A fiber bundle produced by feeding combed fibers into a rotating rotor to accumulate the fibers over the inner circumference of the rotor is drawn out therefrom and is introduced into a false twisting unit, where the fiber bundle is false-twisted so that the twists are transmitted to a portion of the fiber bundle adjacent to the fibers accumulated over the inner surface of the rotor. A guide funnel having a guide surface extending near to the fiber accumulating surface is disposed within the rotor.

Abstract: A pneumatic spinning apparatus wherein a sliver is introduced into an air injection nozzle in which the sliver is acted upon by a flow of compressed air to produce a spinning yarn. A silencer is connected in contiguous relationship to an exhaust air hole of the nozzle.

Abstract: A pneumatic spinning method includes conducting sliver formed at least partly of spinning fibers through at least one swirl nozzle, and contacting the sliver in the swirl nozzle with at least one heated compressed air jet operating the swirl nozzle, and a device for carrying out the method.

Abstract: The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a slide member movable at essentially right angles to the interlacing passage. The slide member has a jet or blow nozzle opening into the interlacing passage. The slide member is selectively movable in predetermined directions. Due to this movability of the slide member there exists the possibility of moving the airstream issuing from the jet or blow nozzle so as to interlace the filaments of the multi-filament yarn. The airstream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn. The movement of the slide member is effected by means of a pressure pin or bolt which displaces the slide member against the force of a compression spring.