Abstract: A spinning rotor for an OE spinning machine includes a rotor body having a fiber sliding surface formed thereon and having a fiber collection groove formed therein defining another surface, at least one of the surfaces having a multiplicity of erosion craters formed therein, and a method for producing the spinning rotor.

Abstract: A spinning rotor of an open-end spinning machine, includes a steel body having a sliding surface formed thereon and a collection groove formed therein for spinning fibers, a surface layer disposed at least on the interior of the body formed of at least one material from the group consisting of iron carbide, iron boride, iron silicide and iron nitride, the interior surface layer including a portion coming in contact with the spinning fibers, and an additional coating disposed on the portion being formed of non-ferrous metal having granules of a hard substance embedded therein.

Abstract: An installation includes a spinning machine, a winding machine, a bobbin transporting device transporting the bobbins from the spinning machine to the winding machine, and a tube or sleeve transporting device transporting tubes or sleeves from the winding machine to the spinning machine providing a circulation of wound and unwound tubes or sleeves, the bobbin transporting device including at least one automatic yarn steaming device.

Abstract: A method for starting an open-end rotor spinning machine, including rotors, a tangential belt guided along the spinning machine for driving the rotors and functional connections between the rotors and the tangential belt includes interrupting the functional connections between the rotors and the tangential belt, subsequently beginning to drive the tangential belt, subsequently acclerating the tangential belt to a speed conforming to that of a spinning operation, and successively re-establishing the functional connections between the rotors and the tangential belt, and a device for carrying out the method.

Abstract: An open-end rotor spinning machine includes a multiplicity of spinning boxes disposed side by side on a machine frame at spinning stations; each of the spinning boxes including: a basic frame, a first shaft disposed on the basic frame, a spinning rotor having a rotor plate being disposed on the first shaft, a rotor housing surrounding the rotor plate, a second shaft disposed on the basic frame substantially perpendicular to the first shaft, a lid-like insert covering an opening formed in the rotor housing and being pivoted about the second shaft for opening the spinning box, a thread withdrawal channel disposed on the lid-like insert, a thread withdrawal nozzle disposed on the thread withdrawal channel in the vicinity of an opening in the rotor plate, the thread withdrawal nozzle being pivotal on the second shaft out of the vicinity of the opening in the rotor plate in a given direction, a third shaft disposed on the basic frame, a bearing pivotally disposed on the third shaft, a fiber feeding and opening dev

Abstract: A method for determining yarn number and thickness deviations for yarn connecting processes in automatic open-end spinning machines includes producing a yarn connection at a yarn connection point, subsequently automatically measuring one of the yarn number, yarn thickness and yarn mass per unit length in a yarn section of limited length upstream of the yarn connection point with the yarn running to produce a measured value, comparing the measured value with a comparison value, and inducing a signal with an indication regarding the spinning unit in the case of a deviation between the measured and comparison values with a predetermined magnitude, and an apparatus for carrying out the method.

Abstract: An automatic bobbin winder includes a bobbin removal location; a bobbin transfer point; a bobbin conveyor belt for storing bobbins and transporting bobbins toward the bobbin removal location, the bobbin conveyor belt having an end at the bobbin transfer point; a travelling bobbin changer disposed below the bobbin conveyor belt for transporting individual bobbins; a bobbin transfer device at the bobbin transfer point being controlled by the bobbin changer for successively transferring bobbins from the bobbin changer to the bobbin conveyor belt; a device for advancing the bobbin conveyor belt by at least one bobbin width in a given storage direction prior to each bobbin transfer; and a device for initiating a priority transport run of the bobbin changer for transporting an individual bobbin to the transfer point after each bobbin transfer.

Abstract: A method of producing a tension-proof thread connection by splicing includes preparing threads for splicing by contacting ends of the thread with a hot gas before splicing for dissolving the thread ends into open-ended individual fibers, for softening the individual fibers and for making the fibers better suited for splicing; and subsequently splicing the threads by alternatingly tangling, interlocking, swirling and intertwining the fibers of the thread ends, and a device for carrying out the method.

Abstract: Device for unloading textile coils from a coil conveyor provided with take-up mandrels, the textile coils having coil tubes by which the coils are stuck onto the take-up mandrels, includes at an unloading station of the coil conveyor, a fork pivotable about a pivot shaft in a plane perpendicular to the axis of a take-up mandrel thereat and a textile coil stuck thereon for gripping under the lower end of at least one of the coil and the coil tube and supporting the coil tube, the fork being connected to a counterbearing disposed above the textile coil and pivotable in the same rotational sense as the fork, a lifting device connected to the pivot shaft of the fork for lifting the textile coil, a deflector wall located adjacent the coil conveyor, the fork being pivotable with the lifted textile coil and, with upper parts of the textile coil disposed against the counterbearing, until the fork is beneath the deflector wall and the textile coil comes into contact with the deflector wall, the textile coil being slid

Abstract: A rotary dobby for moving a shaft includes a connecting rod connected to the shaft to be moved, the connecting rod having two mutually-opposite wedge detents disposed thereon, an eccentric disk carried on the connecting rod having a wedge guide extended radially in the eccentric disk, a drive shaft assembly having at least one detent groove formed therein, a coupling wedge disposed between the drive shaft assembly and the eccentric disk, the coupling wedge having an open shifting groove formed therein, two control pieces engageable in the shifting groove, two control rods each being connected to a respective one of the control pieces and being controlled according to a given pattern for pushing one of the control pieces into the shifting groove and for pushing the coupling wedge alternately into the detent groove along the length of the wedge guide when the drive shaft assembly is not rotating and into one of the two wedge detents, and a detent device disposed on the connecting rod at and associated with the

Abstract: A rotary dobby for moving a shaft includes a connecting rod connected to the shaft to be moved, the connecting rod having two mutually-opposite wedge detents disposed thereon along a given wedge-detent diametral line, an eccentric disk carried on the connecting rod having a wedge guide extended radially in the eccentric disk, a drive shaft assembly having at least one detent groove formed therein, a coupling wedge disposed between the drive shaft assembly and the eccentric disk, the coupling wedge having an open shifting groove formed therein, two control pieces engageable in the shifting groove, two control rods each being connected to a respective one of the control pieces and being controlled according to a given pattern for pushing one of the control pieces into the shifting groove and for pushing the coupling wedge alternately into the detent groove along the length of the wedge guide when the drive shaft assembly is not rotating and into one of the two wedge detents, and an automatic zero setting device

Abstract: A device for feeding-in a thread end through a thread draw-off channel of a thread guiding element into a spinning nip of a friction spinning device includes a pressurized-gas injection device in the thread guiding element for producing an air flow in the thread draw-off channel opposite in direction to that of a thread draw-off direction of a spinning operation in the friction spinning device, whereby a thread end is entrained thereby, the thread draw-off channel continuing along the spinning nip from a termination thereof in the thread guiding element.

Abstract: A bobbin tube magazine assembly, includes:a bobbin tube feeding device;a bobbin tube conveyor connected to the bobbin tube feeding device, the bobbin tube conveyor being controlled by the bobbin tube feeding device for discharging bobbin tubes from the bobbin tube conveyor to the bobbin tube feeding device and the bobbin tube conveyor being independently actuatable for circulating bobbin tubes;the bobbin tube conveyor including:at least one endless pulling device, slip-on arbors protruding from the pulling device, each of the arbors having an end distant from the pulling device for receiving bobbin tubes, the arbors passing through a location during circulation in which the arbors point below the horizontal, as seen in direction toward the ends of the arbors, sliding guides disposed adjacent the ends of the arbors at the location for preventing bobbin tubes from slipping off the arbors, a freely accessible bobbin tube filling location, and a bobbin tube discharge location;and a discharge device disposed at th

Abstract: An OE friction spinning device having a fiber loosening device and device for forming a spinning wedge, improvement includes a fiber conducting channel having a wall, a device for generating a transporting air current in the fiber conducting channel for carrying fibers from the fiber loosening device to the spinning wedge, the wall having at least two openings formed therein being spaced from each other along the transporting air current for the passage of guiding air forming at least one guiding air stream parallel to the transporting air current in the fiber conducting channel.

Abstract: A textile machine assembly includes a textile machine for producing cross-wound bobbins, the textile machine having a head end, bobbin winding stations and a cross-wound bobbin collector disposed at the head end of the machine; a bobbin changer machine traveling from winding station to winding station for exchanging fully wound individual cross-wound bobbins for empty or partially wound tube sleeves at the winding stations and for transporting individual cross-wound bobbins from the winding stations to the collector; and a device disposed at least at one of the machines for causing the bobbin changer machine to transport cross-wound bobbins to the collector after each bobbin exchange has occurred and before beginning another bobbin exchange.

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: Winding device for cross-wound bobbins, including a winding frame rotatably supporting a bobbin, a drive drum for rotating the bobbin, and a drive for rotating the drive drum, the improvement including an apparatus for automatically lifting the bobbin from the drive drum upon the stoppage of the drive, the lifting apparatus including a disconnection device being connected to the drive and being switchable into different switching states for controlling the drive dum, a device for lifting the winding frame being connected to the disconnection device and being controlled in dependence on the switching state of the disconnection device, and a coupling having a first coupling element connected to the winding frame, a second coupling element connected to the frame lifting device, and a control element controllable by the frame lifting device for separating and joining the coupling elements.

Abstract: A textile thread winding operation, includes a method of forming a thread reserve from the thread end of a textile coil wound on a hollow coil core which comprises removing a textile coil from a winding device and slowly rotating the textile coil in direction opposite to the direction in which a thread is wound thereon, pneumatically seizing a thread end of the textile coil with a suction gripper and sucking the thread end into the suction gripper, displacing the suction gripper so that the suction opening thereof is located at the end of the coil core extending out of the textile coil, and releasing the thread end at the coil core.

Abstract: A method for avoiding irregular or ribbon windings while winding cross-wound bobbins with scrambled windings, including a movable bobbin holder for supporting a bobbin and a frictionally-driven drive cylinder for contacting the bobbin includes continuously lifting the bobbin holder to different heights and lowering the bobbin holder causing the duration of the contact between the bobbin and the drive cylinder to continuously change, and a device for carrying out the method.

Abstract: Method for joining an upper thread with a lower thread, which includes moving at least one thread regulator from a thread receiving position to a thread delivery position, inserting the threads with the at least one thread regulator into a longitudinal groove formed in a splicing chamber, automatically admitting compressed air laterally into the splicing chamber for splicing the threads, automatically separating the ends of the upper and lower threads and blowing compressed air into the splicing chamber in dependence on the position of the at least one thread regulator, separating the threads to form new shorter thread ends, sucking up the newly-formed shorter thread ends with an air stream, and securing the newly-formed shorter thread ends and device for performing the method.