Abstract: Device for sucking-in and holding a thread, including a suction body having a suction opening formed therein for sucking-in a thread, and a controllable thread-clamping device for clamping the thread sucked-in through the opening, the thread-clamping device being in the form of pneumatic value operated by suction air.

Abstract: An assembly for a bobbin creel includes a rod-shaped support and thread tensioners connected to the support, the support being a rod with a hollow profile and formed with a longitudinal slot; each of the thread tensioners having a drive unit, a loading unit and at least one cup-type thread brake connected to the drive unit; the cup-type thread brake having a substantially horizontal axis of rotation; the drive units of the thread tensioners being disposed in the interior of the rod with the hollow profile; a common drive element connecting the drive units to one another; and a releasable clamping element connecting the cup-type thread brake to the support.

Abstract: The splicer head (5) of a pneumatic yarn splicer device (1) is provided on either side with pneumatic holding devices (15, 16) for holding the respective yarn ends (34', 35') of the yarns to be spliced together (34, 35), the inlet-mouths (33) of these holding devices having inserting aids for the yarn ends (34', 35') shaped as recesses (36, 37) of varying depth and of limited extent. With the help of said inserting aids, the yarn ends can be seized more rapidly, held more securely, and, as required, be prepared for splicing better and more rapidly.

Abstract: A make-ready unit for making a thread end ready preparatory to connecting it with another thread end in a thread splicing device, the make-ready unit having a thread splicing device, the make-ready unit having a thread channel formed in a hollow body and traversible by a gas flow produced by injected gas, the thread channel being open at both ends for receiving the thread end transitorily therein, including a pressure-gas guiding device formed as a first ring channel surrounding the hollow body and having at least one pressure-gas supply location, the thread channel being formed with a thread inlet end through which the thread end is received and having a funnel-shaped flaring portion at the thread inlet end extending from a main cylindrical part of the thread channel, and a likewise funnel-shaped cover formed with a central opening and covering the funnel-shaped flaring portion of the thread channel in such manner that a second ring channel defined by conical surfaces extends from the first ring channel to t

Abstract: In a winding machine having a plurality of sequentially disposed winding sections and common end sections, each of the winding sections includes a plurality of winding stations, and a bobbin tube transporter selectively adjustable for clockwise and counterclockwise rotation for discharging empty bobbin tubes, the bobbin tube transporters of all of the winding sections being mutually sequentially aligned.

Abstract: A tension-proof thread joint, includes two endless threads pointing in different directions, the threads having ends lying adjacent each other in lengthwise direction thereof forming a common thread end with an end section, the common thread end being twisted through one and one-half turns forming a loop with a thread eye formed therein, and the end section of the common thread end being extended through the thread eye to prevent untwisting of the common thread end.

Abstract: An automatic coil winding machine with a multiplicity of winding stations at which supply coil magazines with respective rotary feeders are provided, and with a loading device for loading the magazines with supply coils which are moved by transporting means to the magazines, each of the supply coil magazines having a filling location for automatic feeding, and an unloading location, and means for always storing at least one supply coil in the respective rotary feeder between the filling location and the unloading location, includes a device proximate to the filling location and actuatable for performing a function leading to prevention of overfilling a respective rotary feeder with the supply coils.

Abstract: Method of preparing fibers fed from a fiber-loosening device into a wedge-shaped spinning zone of a friction spinning machine having friction elements moveable relative to one another, which includes feeding a fiber-laden carrier-air flow having a component directed parallel to the wedge-shaped spinning zone tangentially to one of the friction elements at a location outside the wedge-shaped spinning zone and in a direction opposite the direction of movement of the one friction element, simultaneously exerting holding forces on the fibers and flinging the fibers against the moving surface of the one friction element so that the fibers are stretched out and held fast thereon, conveying the fibers in held-fast condition thereof into the wedge-shaped spinning zone, rolling the fibers therein and integrating the fibers into a yearn, and drawing-off the thus-formed yarn.

Abstract: A controllable and adjustable yarn tensioner having two rotationally driven brake plates, between which yarn to be placed in tension is guided, includes first and second rotationally supported shafts, one of the brake plates being disposed at one end of the first shaft, the other end of the first shaft having an operative connection with a driving device; the other of the brake plates being disposed at one end of the second shaft, the other end of the first shaft being also connected, via a transmission system disposed outside of the brake plates to the other end of the second shaft, the first shaft being axially slideable; and a brake plate-disengagement device connected to the first shaft; at least one of the two brake plates being connected to an adjustable compression element contributorily determining the braking force at which the brake plates are applied; the first and the second shafts having respective rotational axes spaced from and parallel to one another.

Abstract: A spool transporting assembly for the sequential transfer of textile spools wound on tubes, includes a spool preparation station having a support surface for textile spools, a spool receiving device, and a spool transporting device for transporting textile spools from the spool preparation station to the spool receiving device, the spool transporting device including a gripper head being movable in at least one plane into and out of a centered spool receiving position being fixed relative to the spool preparation station, the gripper head including gripper elements for gripping textile spools of different diameters in the centered spool receiving position.

Abstract: A method for calling a travelling bobbin-changing device to a winding station of a bobbin winding machine, each winding station having a thread presence monitor for monitoring the presence of a thread, a bobbin-stoppage indicator for indicating stoppage of rotation of the bobbin, and a bobbin filling indicator for indicating a predetermined fullness or thread length or diameter of the bobbin, includes continuously checking for the presence of a thread connected to the bobbin with the thread presence monitor, continuously checking for a stoppage of the rotation of the bobbin with the bobbin-stoppage indicator, continuously checking for the predetermined fullness or thread length or diameter of the bobbin with the bobbin filling indicator, issuing a signal when simultaneously the thread is present, the rotation of the bobbin has stopped and the predetermined fullness or thread length or diameter of the bobbin has been reached, and stopping the bobbin-changing device at the winding station for exchanging the bob

Abstract: A spinning device for producing a twisted thread formed at least partially of spinning fibers, includes a flow generator having an air inlet and an air outlet, at least one rotating perforated drum having a given axis, a suction device disposed in the drum, the suction device having at least one suction opening disposed substantially parallel to the given axis and connected to the air inlet of the flow generator, another drum disposed outside the first-mentioned drum opposite the suction opening for forming a spinning wedge from flying fibers, a fiber loosening device for loosening fibers and conducting an air transport current, a fiber conduction channel for conducting the flying fibers and the air transport current from the fiber loosening device to the spinning wedge, means communicating with the fiber conduction channel for increasing the air transport current flowing through the fiber conduction channel, and an air conduction line connected from the air outlet of the flow generator to the air current inc

Abstract: Method for starting the operation of a friction spinning machine, including friction surfaces movable in opposing directions for forming a spinning wedge, a device for supplying fiber to the spinning wedge, a thread withdrawal device, at least one suction device acting on the spinning wedge during the spinning operation, a suction tube disposed at an end of the machine opposite the thread withdrawal device, and a suction air source connectible to the suction device and to the suction tube, which includes:stopping the fiber supply and the motion of the friction surfaces;disconnecting the suction device from the suction source;supplying suction air from the suction source through the suction tube at the spinning wedge for inserting a thread into the spinning wedge;keeping the thread in a tensioned condition in vicinity of the spinning wedge;operating the suction device with a given suction power;moving the friction surfaces around the thread with a given speed to remove the twist of the thread at a given locati

Abstract: A method of starting the operation of a friction spinning unit having friction surfaces displaceable in opposite directions and forming a spinning wedge, the spinning unit further having a fiber infeeding device, a thread take-up device for drawing a thread longitudinally through the spinning wedge, and at least one suction device acting upon the spinning wedge, at least one of the friction surfaces being formed by a sieve drum, the suction device having a suction nozzle acting upon the spinning wedge by sucking air through the wall of the sieve drum, by means of an automatic thread joining device, includes:(a) laying a thread into the spinning wedge;(b) initiating the infeed of spinning fibers into the spinning wedge;(c) connecting the friction surfaces with a thread-joining drive arrangement, and moving the friction surfaces in opposite directions with increasing speed;(d) continuously withdrawing the thread from the spinning wedge, and conducting it to a waste collector;(e) interrupting the travelling thre

Abstract: A method of starting the operation of a friction spinning unit having friction surfaces displaceable in opposite directions and forming a spinning wedge, the spinning unit further having a fiber infeeding device, a thread take-up device for drawing a thread longitudinally through the spinning wedge, and at least one suction device acting upon the spinning wedge, at least one of the friction surfaces being formed by a sieve drum, the suction device having a suction nozzle acting upon the spinning wedge by sucking air through the wall of the sieve drum includes:(a) stopping the fiber infeed, and stopping the displacement of the friction surfaces;(b) stopping the flow of suction air from the spinning wedge through the wall of the sieve drum into the suction nozzle;(c) introducing into the spinning wedge through the wall of the sieve drum a suction air flow in a direction opposing the direction in which the thread is being drawn, and guiding the air flow out of the suction nozzle through the wall of the sieve dru

Abstract: A friction spinning machine having a plurality of friction spinning units, each of the spinning units including two rotatable parts forming a spinning wedge, and two whorls each being connected to a respective one of the rotatable parts, includes a device for driving the rotatable parts, the driving device including a common endless belt wound around both of the whorls, a drive roller around which the endless belt is wound for transmitting the belt drive, a tangential belt guided along the length of the friction spinning machine, and a device for engaging and disengaging frictional contact between the tangential belt and the endless belt or belt roller.

Abstract: A method for starting the operation of a friction spinning machine, including friction surfaces movable in opposing directions for forming a spinning wedge; the friction surfaces being movable in a spinning direction during a spinning operation, a device for supplying fiber to the spinning wedge, at least one suction device acting on the spinning wedge, a suction tube supplied with suction air, and a thread withdrawal device includes:stopping the fiber supply and the motion of the friction surfaces;stopping the suction;moving the suction tube through the spinning wedge in a given direction for sucking in thread and fiber remains;subsequently sucking a thread through the suction tube; moving the suction tube out of the spinning wedge in a direction opposite said given direction depositing the thread in the spinning wedge;resuming the suction at least as late as the step of moving the suction tube out of the spinning wedge;moving the friction surfaces in a direction opposite the spinning direction removing the

Abstract: Method for controlling a thread joining process having several thread joining steps and occuring by starting a rotor of an open end rotor spinning machine, which includes choosing a narrow limited rotor speed range for the beginning of a starting process of a specific thread joining step, which occurs after a first thread joining step, and selectively starting and finishing thread joining steps in substantially constant given intervals before and after the beginning of the starting process, and an apparatus for carrying out the method.

Abstract: A method for locating and holding an end of a thread wound on a spool at a winding station, with a thread connector having a thread suction nozzle with a thread sensor connected thereto, for partially unwinding the thread, includes starting the thread connector with the winding station, simultaneously bringing the spool at the winding station to a standstill after rotation in a forward direction and bringing the thread suction nozzle of the thread connector from a starting position to a position close to the surface of the spool, subsequently supplying the thread suction nozzle with suction for a limited time as soon as the rotation of the spool has ceased for sucking-in the thread end, rotating the spool in a reverse direction during the suction step after the rotation of the spool has ceased, subsequently holding the sucked-in thread end with the suction nozzle, and subsequently moving the thread suction nozzle back to the starting position thereby inserting the thread into the thread connector if the senso

Abstract: A spool separating device for separating spool tubes with a relatively smaller diameter from finished wound spools with a relatively larger diameter, includes a vibratory conveyor with a bottom, an upper end, a sliding surface extended spirally upward along a given spool transport direction from the bottom to the upper end, a wall outwardly bordering the sliding surface, the wall having a slot formed at a given location therein, the slot having a height being greater than the diameter of a spool tube and smaller than the diameter of a finished wound spool and a length being greater than the length of a spool tube, an adjustable wall section in a position bordering the top of the slot determining the height of the slot, the adjustable wall section being resiliently moveable out of the position in the event of spool jamming, and an additional wall section determining the depth of the slot and approaching the bordering wall in the given spool transport direction for guiding the end of a spool tube of a spool whi