Abstract: A spinning unit of an air-jet spinning machine for the spinning of a fiber composite has a pair of delivery rollers and a spinning nozzle, whereas the spinning nozzle has a yarn formation element and a fiber guide element. The fiber guide element has a front turned towards the pair of delivery rollers and an end turned away from the pair of delivery rollers. The fiber composite is fed to the spinning nozzle with the pair of delivery rollers, and is introduced into the spinning nozzle through the fiber guide element, and subsequently a yarn is formed from the fiber composite through the yarn formation element. A tool for feeding an additive to the fiber composite is provided between the pair of delivery rollers and the end of the fiber guide element.

Abstract: An apparatus for stretching natural staple fibers to reduce their diameter includes a plurality of rotatable arrays of driven pulleys which are mounted for rotation between two twist blocking nips. The rotatable arrays are rotatable on a longitudinal axis corresponding to the direction of travel of an assembly of fibers through the apparatus to impart false twist into the assembly. The assembly of fibers is stretched between two of the pulley arrays with the pulleys of the downstream array being driven at a higher speed than the pulleys of the upstream array. A steam chamber is provided for setting the stretch while the false twist is being maintained by further rotatable pulley arrays. Post treatment stages may be added to further stabilize the stretched fibers.

Abstract: A yarn piecing and knotting device for use in a pneumatic spinning machine for spinning slivers directly into a yarn by air jetting nozzles is disclosed. This yarn knotting device comprises means for retaining a spun yarn temporarily during a period ranging from the time of completion of the operation of a yarn knotter for connecting the spun yarn with a yarn taken out of a package to the time of resumption of winding.

Abstract: The combination of a suction device to maintain yarn flow through a co-mingling jet apparatus during doffing of a completed yarn package. The co-mingling jet is an air jet employing an air inlet substantially perpendicular to the thread line through the jet.

Abstract: In an open-end spinning apparatus provided with a spinning rotor rotatably disposed in a rotor housing and a combing roller rotatably disposed in a frame body, a spinning chamber being formed when the frame body is combined with the rotor housing when the normal spinning operation is carried out, when it is required to remove impurities from the inside wall of the spinning rotor, firstly the frame body is displaced away from the rotor housing and simultaneously a receiving plane is created at a position adjacent to the opened rotor housing, where suction force is being applied, and secondly, the impurities are removed from the spinning rotor and accumulated on the receiving plane so that the received impurities are carried outside of the spinning apparatus by the suction force.

Abstract: Process and apparatus are herein described for shearing and alternatively directing a continuously produced strand into or away from a strand collection device, particularly a pot spinning device. The novel apparatus is located between a strand producing unit and a collection unit and includes an elongate upright funnel with a transverse slide at the lower outlet of the funnel. The slide carries a straight tubular section and an angular tubular section, with a cut-off blade between the sections. The slide is reciprocated to bring either of the two sections into register with the outlet of the funnel, with the blade serving to sever the strand as the slide is moved to either position. When the staight section is in register, the strand enters the collection unit. When the angular section is in register, the strand is diverted away from the collection unit. The device is particularly used when operation of the collection unit is interrupted while allowing strand production to continue.

Abstract: An apparatus for cutting short the leading end of the thread to be wound on a bobbin in a spinning machine, whereby after the thread is wound up on a bobbin with the leading end of the thread being gripped between the spindle and the bobbin and the thread has been wound up on the bobbin, the leading end of the thread is cut at the bobbin end by the cutting member of a cutter device which travels in front of a row of spindles of a spinning machine.

Abstract: The apparatus and method of handling linear textile material to facilitate its processing including withdrawing the linear textile from a source and advancing it along a given path to a handling station; between the source and handling station applying the forces of a stream of fluid media in a direction opposing the movement of the textile material.

Abstract: Spindle for ring spinning and ring twisting frames, especially for cord twisting frames, having an underwind crown arranged coaxially on the spindle below the bobbin and above the whorl, the crown having an extensive sleeve part for the winding-on of a thread during underwinding and an annular rim extending outwardly with recesses at the periphery and adjoining the sleeve part upwardly, from the base of which rim there may project cutting edges of at least one knife. With ring spinning or ring twisting frames equipped with such spindles the ring bank, after a predetermined measured length of thread has been wound on the bobbin, falls to a so-called underwind stop, by which the spindle drive is switched off. The traveller and twisting ring are located at a level at which during decrease of the spindle drive down to standstill of the spindles the thread is no longer wound on the bobbin but is wound on the cylindrical sleeve part of the underwind crown.

Abstract: The invention proposes an improved yarn winding arrangement including a series of bobbins and spindles. The arrangement includes a fluid operated yarn sucking and projecting unit positioned at a distance substantially above its related bobbin and in close proximity to the starting point of the yarn balloon formed directly above the bobbin. A first fluid operated, waste yarn sucker is operatively connected with the unit. A second fluid operated waste yarn sucker is positioned in proximity to the root end of the yarn for receiving the yarn projecting fluidically from the discharge end of the aforementioned unit. The unit includes a sleeve as its main body formed with a longitudinally extending slot for sucking therethrough the yarn for deviating it from its regular running course to a wasting one.

Abstract: A muffler for use in conjunction with an aspirator during the production of multifilament, synthetic yarn is provided. Audible noise which is emitted at the inlet end of the aspirator is reduced by up to 22.5 .DELTA.dB(A) and brought to within acceptable levels through the use of a perforated tube, resonant chamber, and sound absorbing means. The tension of the aspirated yarn is maintained by finishing the muffler inlet end with a high RMS surface.

Abstract: A textile machine having suction apparatus for processing yarns continuously running at high speed to permit threading up, doffing and the like without stopping the machine, the apparatus comprising main yarn conveying ducts extending along opposite sides of the machine, each duct having a series of small diameter straight unobstructed passages of predetermined length spaced along and opening into the duct, the axis of each passage being of predetermined related length and diameter and being inclined at an acute angle with respect to the longitudinal axis of the duct. A suction fan draws air in through said passages for tensioning the yarn passing through the passages and establishing a column of yarn conveying air along the duct.

Abstract: First suction forces of relatively large magnitude and small duration, and second suction forces of relatively small magnitude and large duration, are alternatively applied to the trash outlet of each trash box of a multi-station open-end spinning machine during its operation. The large-magnitude suction forces rapidly evacuate from each box trash previously introduced therein by a beater roll disposed adjacent its inlet. The small-magnitude suction forces discourage escape of the trash from the boxes, pending evacuation thereof. Preferably the small-magnitude suction forces are applied simultaneously and substantially continuously to the outlets of all of the trash boxes, and the large-magnitude suction forces are applied successively to discrete groups of the boxes.

Abstract: Pneumatic yarn aspirating device includes at least one tube, a vacuum source connected to the tube, openings and filament aspirating elements spaced along the tube, and means for controlling the size of the openings.

Abstract: In a textile machine provided with displaceable means for carrying out an operation utilizing air pressure, a main duct is disposed along the length of the machine, and the main duct is provided with a longitudinal aperture covered with a flexible covering member which permits formation of a space by deforming the skirt portion of the covering member. A connecting pipe of the displaceable means is inserted into the main duct through the space and the connecting portion is sealed by a sealing member secured to the pipe during the displacement of the displaceable means.

Abstract: An apparatus for stringing up a rotating package holder on a ring twister with a yarn being fed to a waste jet. A rotatable pulley with a yarn guide attached is used to intercept the yarn and move it into engagement with a cutter attached to the waste jet and a yarn snagging means adjacent the package holder. The waste jet-cutter combination is also designed to cut down a full package at the completion of a winding cycle.

Abstract: In a textile yarn processing machine, such as a twister, spinning frame or the like, having a plurality of spindle assemblies positioned in side-by-side relationship thereon for the processing of yarn, control devices operatively connected with each of the spindle assemblies for selectively stopping and starting operation of the respective spindle assemblies, and a yarn knotter mechanism for being selectively positioned in front of each spindle assembly in the event of a broken or otherwise separated yarn therein for knotting together the two ends of the separated yarn when the spindle is stopped by the control devices and including selectively actuatable mechanisms for operating the knotter mechanism for the knotting operation, the following improvement is provided.

Abstract: The invention relates to a device for taking up the thread in textile machines in which the tow or yarn travels from the drawing system to the wind-up unit through a closed conduit, either at the start of the spinning or after a breakage of the thread, comprising a bell shaped member, connected at its base to an aspiration unit through a flexible tube, and an electrically conductive spring lodged in the bell member so as to protrude beyond the mouth thereof, the spring being electrically connected to the aspiration unit, so that the aspiration action is started upon the spring contacting metallic parts, like the outlet of the thread to be fed to the drawing system.