Abstract: An automatic thread joining apparatus for an open end spinning machine includes a device for producing a tension-proof thread connection forming a thread joint, a device for removing the thread joint, a controllable thread storage device for intermediate storage of a length of thread spun during operation of the device for producing a tension-proof thread connection, and a thread removal device associated with the thread storage device being activated upon the occurrence of an unsuccessful thread connecting operation.

Abstract: A method for starting the spinning of a thread in an OE-spinning device includes exposing a thread end to a gas current before starting spinning, subsequently conducting the thread end to a spinning element, collecting spinning fibers at the spinning element, and subsequently applying the spinning fibers to the thread end, and an apparatus for carrying out the method.

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: 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 open-end spinning machine is provided having a servicing apparatus that can be moved along a series of spinning units, each unit containing one spinning rotor assembly comprising a shaft and a rotor. It is provided that in the individual spinning units, the shafts of the spinning rotor assemblies are disposed in wedge-shaped gaps formed by pairs of supporting disks and the shafts are driven by a tangential belt. The servicing apparatus contains a brake that can be applied to the rotor when servicing of a unit is required. The rotor is stopped while, at the same time, the drive of the tangential belt is interrupted via a bracket pulley that can be moved away from its operating position. In addition, members are provided for securing the spinning rotor in its operating position during the braking.

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: In order to make the start-up of spinning easier and to obtain a spinning triangular zone which is easily accessible and easily observed, the feeding in of fibers is provided at a rear triangular zone 35 whereas the twisted spun yarn 6 is withdrawn from the other triangular zone 36 in parallel to the plane 34 of the closest distance between the two spinning members 1, 2. The fibers have to pass a narrow section, since the triangular zone 36 is disposed oppositely to the triangular zone 35 versus the line of adjacency of the two spinning members. Suction openings 3' 4' of the suction provisions 3, 4 are directed toward that triangular zone 36 from which the spun yarn is withdrawn. The fiber input location 5' of the fiber feed provision 5 is directed toward the surface of that spinning member 1 whose surface 32 moves in the direction of the first triangular zone 35.

Abstract: A spinning device for manufacturing a twisted thread at least partially formed of spinning fibers, includes a perforated drum rotating about a given axis of rotation, a suction device disposed in the drum, the suction device having at least one suction opening formed therein extended substantially parallel to the given axis of rotation, a device disposed outside the drum opposite the suction opening for forming a wedge-shaped area for spinning fibers, a device for conducting flying spinning fibers into the wedge-shaped area, and a device for pulling out a spun thread substantially parallel to the given axis of rotation, the forming device including a shell carrier rotating about a longitudinal axis and a flexible shell disposed on the shell carrier.

Abstract: A double-sided textile machine, includes a plurality of bobbin assemblies between first and second ends of the textile machine for producing cross-wound bobbins; a device for collecting and transporting the bobbins produced in the bobbin assemblies, including a bobbin collection station in vicinity of the first end of the machine, a first bobbin transport belt for receiving bobbins axially aligned in a first transport direction from a first side of the machine and for moving the bobbins toward the collection station in the first transport direction, a second bobbin transport belt similar to the first transport belt for receiving bobbins axially aligned in a second transport direction opposite the first transport direction from a second side of the machine and for moving the bobbins away from the collection station in the second transport direction, a substantially semicircular device in vicinity of the second end of the machine for sequentially removing bobbins from the second transport belt, for turning the

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 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 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 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: 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: Method for controlling a thread joining process which takes place by starting a rotor in an open end rotor spinning machine, which includes beginning pre-feeding of a fiber quantity into the rotor which is required for thread joining, and subsequently controlling the pre-feeding speed after the chosen draft for the following spinning operation, and an apparatus for carrying out the method.

Abstract: A method of increasing the hairiness and bulkiness of a thread, in an open-end rotor spinning machine having a deflection ring disposed concentric to the axis of rotation of the rotor, includes forming a false twist in the thread with the deflection ring, continuously withdrawing the thread through the deflection ring substantially along the direction of the axis of rotation of the rotor, dissolving the false twist in the thread, forming a thread balloon with the thread, bringing the thread in contact with a multiplicity of separately disposed balloon disturbance elements, and changing the diameter of the thread balloon several times during each revolution of the thread balloon, and a device for carrying out the method.

Abstract: An open end yarn spinning apparatus is disclosed which comprises a plurality of side by side spinning positions, and which is characterized by the ready accessibility of the internal components of each spinning position without interference with an adjacent position. The apparatus includes a central frame extending longitudinally along the length of the apparatus, and each spinning position includes a frame subassembly composed of two longitudinally spaced apart and transversely directed plate-like side members, and a plurality of longitudinally extending braces which interconnect the two side members. The bearing assembly for the rotor, and the feed and opening rolls are mounted to the frame subassembly, and the rotor housing is releaseably mounted to the frame subassembly so that removal thereof exposes the internal components.

Abstract: A double-sided textile machine, includes a plurality of spool assemblies for producing cross wound bobbins, a spool collecting station at an end of the machine, a first spool transport belt disposed at one side of the machine for receiving cross wound bobbins from at least one of the spool assemblies and for transporting the bobbins toward the spool collecting station in a given transporting direction with the bobbins axially aligned in the given transporting direction, a second spool transport belt disposed at the other side of the machine for receiving cross wound bobbins from at least one of the spool assemblies and for transporting the bobbins in a direction opposite the given transporting direction, and a device for successively receiving the cross wound bobbins from the second spool transport belt, for turning the bobbins through substantially 180.degree. and for transferring the bobbins to the first spool transport belt.

Abstract: Spinning rotor for an open-end spinning machine including a rotational body having a hollow interior, the body being formed of steel and having thereon a surface layer formed of at least one of the compounds iron carbide, iron boride, iron silicide and iron nitride at least at locations of the hollow interior thereof at which the spinning rotor comes into contact with spinning fibers being spun into a thread, the steel body with the surface layer thereon being tempered and having increased ductility at high elastic limits, and a method of manufacturing a spinning rotor.