Abstract: A method for piecing a thread formed in an open-end rotary spinning machine to an end of a previously formed thread, wherein spinning fibers are fed to at least one rotating fiber collection surface, the collected spinning fibers are further transported to a thread forming station connected to the fiber collection surface, and the end of the previously formed thread is joined to the spinning fibers transported to the thread forming station as the thread end is rotated, the pieced thread being continuously withdrawn from the thread forming station while spinning fibers are being continuously fed to the fiber collection surface includes a method for piecing a thread formed in an open-end rotary spinning machine to an end of a previously formed thread, wherein spinning fibers are fed to at least one rotating fiber collection surface of a spinning rotor disposed in a closed spinning chamber under negative pressure, the collected spinning fibers are further transported to a thread forming station connected to the

Abstract: An end pivot webguide which may be economically fabricated from stock material and eliminating many cast components is disclosed including pivot arms formed from bar stock and roller frames formed from angle stock. The pivot arms are formed by drilling passages including annular shoulders for receiving radial ball bearings in the bar stock for rotatably mounting first and second pivot pins. The use of radial ball bearings allows the pivot pins to accept thrust forces in an axial direction such that the webguide of the present invention utilizes four bearings of identical type rater than six bearings of three different types as in prior webguides. The pivot arm is symetrical such that one of the pivot pins may be nonrotatably secured to the webguide base and the other pivot pin may be nonrotatably secured to the roller frame. Bearings in the guide rolls rotatably mount the guide rolls on screws removably and nonrotatably secured to the roller frames.

Abstract: A process is provided for producing carbon fiber yarns which comprise an intimate association of carbon fibers having an average length of between 100 and 120 mm. The process comprises transforming tows of multifilaments whose count is between 0.5 and 1 dtex by cracking, by drawing, and controlled breaking to obtain long fibers having an average length of between 100 and 120 mm. These fibers are then transformed on standard spinning equipment for long fibers into a range of yarns which have counts ranging from Mn 1 to Mn 100. The yarns of the present invention can be used for making prepreg fabrics for composites, fabrics for dry and wet filtration, fabrics for making Faraday shields, fabrics for carbonization for carbon/carbon pieces and high-performance seals.

Abstract: A fiber opening device in a spinning unit of an open-end spinning machine wherein an opening roller is mounted within a housing with the housing being integrally formed from a drawing-in opening past a trash discharge opening to a fiber discharge opening and including integrally therewith a drawing-in trough and wall portions at the trash discharge opening. The housing is pivotally mounted to accommodate variations in the silver feed at the drawing-in roller. In an alternate form, the housing is stationary and the drawing-in roller is mounted for relative movement with respect thereto for the same purpose. The opening roller has a fiber opening surface to which the fibers are confined by side flanges on the opening roller and the trash discharge opening is of a width no greater than the width of the fiber opening surface. The opening roller inlcudes a drive shaft rotatably mounted in the housing so that the opening roller and housing are a unit for easy removal and replacement.

Abstract: A open-end spinning assembly includes a silver insertion device, a fiber separating device, a fiber guide device, a fiber collector for collecting, aligning and imparting a rotational movement onto fibers and subsequently applying the fibers to an open yarn end, and a draw-off device drawing-off yarn from the yarn collector. A fed-back yarn end is applied to a piecing fiber quantity fed into fiber collector for forming a piecer. The yarn is continuously drawn-off from the fiber collector and fibers and continuously fed into the fiber collector. A method for monitoring the piecers includes automatically measuring diameter values relative to the longitudinal axis of the yarn for the piecer and for yarn lengths upstream and downstream of the piecer having at least substantially the length of the piecer. The diameter values are electronically stored in memory and compared with comparison values for producing a comparison result.

Abstract: Air spliced yarn and associated method and apparatus for forming the spliced yarn. The spliced yarn has the ends extending in a common direction laterally of the body of the yarn with the fiber components of the spliced ends of yarn being intimately entangled with each other and forming a commingled projection of entangled fiber components extending laterally from the body of the yarn. The spliced yarn is disclosed for connecting a running package of yarn to a reserve package of yarn as in a yarn creel feeding a bank of yarns to a carpet tufting machine.The apparatus comprises a hand held manually actuatable air valve for compressed air connected to a housing having a hollow wall. The housing has an open ended passageway therethrough for receiving side-by-side yarn ends facing in the same direction. A series of openings for entrance of compressed air into the passageway extend through the inner wall of the housing for effecting air entanglement of the ends of yarn positioned in the passageway.

Abstract: A process and apparatus for job control of servicing elements at a spinning installation with a plurality of servicing points, wherein existing servicing cases are detected and analyzed for correction control by a central control unit. Existing servicing cases are automatically detected separately according to number and correction requirement and, depending on number and degree of difficulty of the sevicing cases detected, a job instruction signal of one of at least two signal stages is transmitted to a corresponding associated servicing element according to a predetermined ranking of the servicing elements.

Abstract: Apparatus for spinning yarn from roving including a spinning frame with spinning units arranged thereon. The roving to be drawn is fed from a common double-roving bobbin to each of two neighboring spinning units, further referred to as spinning units pair. At least one stopping device is assigned to each of the spinning units of the spinning units pair, to stop and release again the roving feed to the two drawing frames of the respective spinning units pair. The purpose of the stopping device is to reduce the loss of roving and to avoid the danger of yarn lapping on the drawing rollers. The stopping device can be actuated by each of two yarn break sensors of the spinning units pair for the simultaneous arrest of the roving. In a second embodiment a yarn-setting carriage is provided on the spinning frame to correct a yarn break, such correction occuring only when all correction hindering conditions are absent.

Abstract: Footwear consisting of a sandal having a plenum adapted to receive the person's foot as well as sand or other granular material, said sand providing a natural environment walking surface between the bottom of the person's foot and the sandal mid-sole, the footwear also having a bottom sole to engage the ground, the bottom sole a part of a lower surrounding cup-like shell with upraised heel part adapted to receive and secure the mid-sole, the upper rim portions of the lower shell providing means for securing a toe strap, heel strap, and instep strap, the instep strap and toe strap being loose and not contacting the foot while the person is standing but contracting the foot when the footwear is lifted up along with the foot. The footwear completely encloses the person's foot by continuing above the forward portion of the lower shell with an upper cover, and finally a plastic top closure material to engage the person's ankle.

Abstract: A suspension cable is encased in a metal pipe formed from a metal strip wound in a series of adjacent helical windings on the cable. The longitudinal edges of adjacent windings are connected by a continuous tight fold.

Abstract: An improved apparatus for threading thermoplastic film through at least one forward stretching machine 23, comprising driven, stationary rolls 1 and driven, raised lift rolls 2. Each of the rolls 1 and 2 has an intake plate 4 on one of its front sides, which has a milled grooved 24 for the threading apparatus to pass through. The threading apparatus comprises a flexible rod 18 with a removably attached clamp component 13 or 25. The clamp components contain variously configured clamping elements, springs, and insertion slots. The clamping elements are arranged in such a way that they hold the film web 3, which has been inserted in them, during the transport of the threading unit through the forward stretching machine, this holding being done by means of self-locking or spring-loading. For the reliable introduction of the threading apparatus into the forward stretching machine 23, there is disclosed an insertion unit 31, having pairs of upper and lower guide bearings 19.

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: An arrangement is disclosed for pneumatic false-twist spinning having a drafting roller device, at least two air nozzles that are arranged behind one another in the travel direction of the yarn, a yarn withdrawal device and means for the transfer of the movably held air nozzles from an operating position following a pair of delivery rollers of the drafting roller device into a piecing position that is offset with respect to the pair of delivery rollers. It is provided that a movably held suction tube is assigned to the drafting roller device, the suction tube, by means of an adjusting device, is able to be applied to the pair of delivery rollers of the drafting roller device when the air nozzles are moved out of the operating position.

Abstract: To control the yarn quality of a yarn produced by a textile machine, for instance a friction spinning apparatus, there is provided at the end of the friction spinning operation, however, forwardly of the pair of withdrawal rolls for the outfeed of the produced yarn, a yarn tension measuring device. Upon deviating from or falling outside of a predeterminate yarn tension tolerance value or range the yarn tension measuring device controls operation of the friction spinning apparatus such that, as required, there is accomplished an appropriate increase or decrease of the yarn tension of the yarn produced by the friction spinning apparatus. Alteration of the yarn tension can be acheived, for instance, by acting upon the drive for one of the friction spinning elements, to control the rotational speed thereof, or by selectively positioning the suction nozzle of a friction spinning element, or by controlling the size of the nip between coacting friction spinning elements, or selected combinations of such measures.

Abstract: To decrease the time required for spindles of a spinning machine to reach their normal operating speeds after a yarn breakage or the like, where the spindles are individually driven by respective asynchronous motors individual to the spindles, the alternating current source whose frequency defines the speed of the motor is temporarily brought to a voltage above the normal operating voltage and the voltage step-up is then terminated.

Abstract: An improved construction of sandal type footwear wherein adjustment of a continuous foot retention strap within the sole of the sandal is attained by incorporating a porous, disintegrable or partial adhesive barrier which allows assembly of the sandal without permanently fixing the strap into position, and an adhesive which allows readherence of the straps after they have been adjusted so as to prevent undesirable slippage of the straps through the sole assembly.

Abstract: A shaft seal having a lip of an elastomeric sealing ring formed with a frusto-conical band around the shaft and has an annular non-constant clearance around the shaft and wherein upon shaft rotation liquid pulsation in said clearance causes oscillation of the band which in turn causes displacement pumping towards the oil side of the shaft.

Abstract: A conductive yarn includes a continuous non-conductive carrier thread having a relatively low modulus of elasticity; a continuous metal thread; and the carrier thread being wrapped around the metal thread. A process for making such conductive yarn includes the steps of pulling the continuous metal thread off a first package; pulling the continuous carrier thread off a second package; applying a relatively high tension to the carrier thread with respect to the tension on the metal thread as both threads are being pulled off their respective packages; and wrapping the tensioned carrier thread around the pulled metal thread. Apparatus for performing the method is also provided.

Abstract: Method and apparatus for splicing two textile yarn ends by untwisting the end portions of each to form a spread beard thereof, interpenetrating or intertwining the beards at both ends, and letting the twist accumulated at both ends progress towards the two mutually interwined or interpenetrated beards.In the method, the untwisted end portions of both yarns are subjected to an axial traction force to set the beards of both yarn ends free and to separate and set the beard fibers substantially parallel with one another, while the beard bases are secured to retain the individual torsion or twist of the fibers, with the beards then being moved laterally to arrange the same adjacent to one another at zones of the beard bases, while the beards are simultaneously slided in longitudinal relative movement to one another.

Abstract: A friction spinning unit employs two rotatable bodies to define the spinning gap, at least one of the bodies being in the form of a cone whose surface moves towards the friction spinning gap from the same side as that from which separated fibres are fed by a fibre feed means. This configuration of the bodies generates a self-conveying action which propels the bundle of fibres axially along the friction spinning gap so that the bundle itself enters twist-blocking means which facilitates the piecing action and dispenses with the need for a seed yarn to be returned to the friction spinning gap to piece up after a yarn break or after shutdown.