Abstract: In the case of a supporting disk for a supporting disk bearing for open-end spinning rotors, the front side is provided with signal generators for the purpose of non-contact revolution counting, which function by means of magnetic field lines. Preferred are permanent magnetic pins which fit into the supporting disk, and which create an induction current. Single magnet embodiments include removal of surrounding disk material to mechanically balance the disk.

Abstract: For the direct spinning of drafting frame sliver, a one-sided ring spinning machine is provided, in the case of which the spinning stations are arranged on one side of the machine and the depositing sites for the cans containing the sliver to be spun are arranged on the other side of the machine. For the withdrawing of the slivers, a drivable deflecting guide is provided closely above the cans which is situated at least approximately in the same horizontal plane as the drivable feeding rollers of the pertaining drafting units. Preferably, the deflecting guide is formed by a transport belt which transports the slivers from the cans to the drafting units. Preferably, the transport belt has a linear course and is driven by the drivable feeding roller of the pertaining drafting unit.

Abstract: In the case of a mounting for an opening roller comprising a plurality of teeth, all the tooth faces and the tooth backs are inclined in rotational direction. At their tips, the tooth faces form an angle relative to an opening roller radial plane of between 10.degree. and 30.degree. . The tooth backs are more inclined to the radial plane at the tooth tips than at the tooth bases. The tooth backs are inclined at the tooth tips in such a way that an extension of the tangent to the tooth back at the tooth tip intersects the tooth face of the following tooth at an intersecting point which is between one-fifth and four-fifths of the tooth height of the following tooth. At least one-half of a tooth height from the tooth tip to the tooth base has a roller circumferential direction width which is at least as large as the distance between the back of the respective tooth and the face of a next adjacent following tooth.

Abstract: A yarn withdrawal navel for an open-end spinning apparatus is provided with a ferromagnetic locating surface. This is used for the purpose of coupling to a mounting, which has at least one permanent magnet. The yarn withdrawal navel and the mounting have abutment surfaces which are configured to vary the magnetic mounting effect on the navel as a function of the relative rotation position of the navel and the mounting.

Abstract: An opening roller for an open-end spinning device is provided with a fitting of combing teeth. The fitting comprises zones with reduced, or entirely without, combing-out effect. The zones with reduced or entirely without combing-out effect are so designed and arranged relative to the combing teeth on the fitting that the fibers are combed out evenly of the sliver. A careful treatment of the fibers without a variation in yarn evenness is hereby achieved.

Abstract: In the case of a supporting disk for a supporting disk bearing for open-end spinning rotors, the front side is provided with signal generators for the purpose of non-contact revolution counting, which function by magnetic field lines. Preferred are permanent magnetic pins which fit into the supporting disk, and which create an induction current.

Abstract: In the case of a spinning machine comprising several spinning stations, which each contain one drafting unit, and comprising depositing sites for cans containing sliver, transport devices are provided for the transporting of the delivers from the cans to the spinning stations. The transport devices comprise delivery rollers which can be stopped independently of the delivery rollers of other spinning stations and independently of the pertaining drafting unit.

Abstract: A two-apron drafting unit comprises at least one sliver guide which projects into the wedge-shaped gap of the roller pair which follows the apron unit. The sliver guide has a defined distance from the surfaces of the roller pair and can be moved within certain limits in the longitudinal direction of the roller pair. The sliver guide is arranged in a holding device which is aligned in parallel to the roller pair as well as with respect to the height of the drafting zone plane. The holding device, which has a slideway for the sliver guide, is arranged on a supporting part which is connected with the lower deflection guide for the bottom apron.

Abstract: In the case of a device for open-end rotor spinning, the axles of the spinning rotor, the supply roller and the opening roller--in plan view--are arranged in parallel planes to each other. In side view the axles of the supply roller and the opening roller are arranged inclined compared to the horizontal axle of the spinning rotor. A driving shaft extends perpendicularly to the above mentioned planes and drives the supply roller with a worm and a worm gear. The axle of the drive shaft is also the swivel axis for a hinged housing which supports the supply roller and the opening roller, the hinged housing also containing the cover for the spinning rotor. The hinged housing is supported independently from the rotor housing and is detachable at right angles to the swivel axis. Both the opening roller and the supply roller are accessible from the operational side when the hinged housing is in spinning position.

Abstract: In the case of a fitting for an opening roller of an open-end spinning device, it is provided that several rows of teeth extend essentially in circumferential direction of the opening roller. The teeth rows are separated from each other by grooves. The lateral flanks of the teeth extend over the groove base in to the lateral flanks of the neighboring row of teeth. The lateral flanks of the teeth, as well as the groove base are provided with a structured surface. The teeth tips connecting the lateral flanks are not provided with this structured surface.

Abstract: In the case of a spinning machine comprising several spinning stations for the spinning of slivers fed in cans into yarns, drivable transport belts are provided which transport the slivers between the cans and the spinning stations. When bridging differences in height with respect to the horizontal line, the transport belts are arranged in such a sloped manner that the slivers rest on the transport belts because of their own weight. Lateral coverings against damaging air flows are preferably assigned to the transport belts.

Abstract: In the case of an opening roller ring member for spinning machines, teeth are integral with a ring-formed base body, the teeth being bounded by notches which extend essentially in axial direction, and by grooves which extend essentially in circumferential direction. The grooves are deeper than the notches. The lateral flanks of the teeth extend towards the tooth tip with a slope angle towards the radial line. The slope angle of the lateral flanks is smaller than the slope angle of the continuous lateral walls of the grooves, at least in the area of the teeth tips. There is a bend in the slope angle of the side walls of the grooves where the side walls join the slope angle of the lateral flanks, whereby the bend edge either coincides with the transition of the side walls into the lateral flanks, or is situated in the area of the lateral flanks.

Abstract: A sliver guiding arrangement for drafting units of spinning machines is provided with forcibly traversing sliver guides. Two sliver guides respectively which are assigned to adjacent slivers and which are connected in front of a wedge-shaped gap of a clamping roller pair, are connected with one another by a coupling member to form one structural member. The coupling member is driven via a driving device by a traversing rod to carry out traversing movements. The driving device, which bridges a distance between the traversing rod and the coupling member, is movable relative to the coupling member in the direction of the wedge-shaped gap. The structural member, which includes the sliver guides, is guided in parallel to the wedge-shaped gap on a sliding surface.

Abstract: In the case of a spinning machine for the spinning of yarns from slivers with a can feeding, the slivers are transported from the cans to the spinning stations by a belt which is provided with holding elements which hold the sliver on its surface. The holding elements may comprise surfaces which guide the sliver laterally by a frictional engagement or may have devices so that the sliver adheres with its supporting surface to the belt. Advantageously, two slivers are transported by one belt.

Abstract: In the case of a spinning machine with several spinning stations, which each comprise a drafting unit, and with depositing sites for cans containing sliver, transport devices are provided for transporting the slivers from the cans to the drafting units. The transport devices as well as the drafting units comprise devices which can interrupt the transport of an individual sliver.

Abstract: In the case of a process for the piecing of the starting portion of a new sliver to the end portion of a sliver travelling into a spinning arrangement, it is provided that the starting portion and the end portion of the sliver are overlapped, placed on a transport belt and loaded by means of a skid. A movable servicing device is provided for selectively moving the skid to accommodate the piecing.

Abstract: In the case of a spinning machine with spinning stations preferably arranged on both sides of the machine, depositing sites for several rows of cans containing the sliver to be spun are assigned to each side of the machine while leaving an aisle. In a roof-type manner, transport devices extend over the operating aisle by means of which the slivers are taken out of the cans and are fed to the spinning stations. The transport devices have two transport sections respectively which are connected with one another by way of a deflecting guide.

Abstract: A rotor support shaft for an open-end spinning rotor assembly is disclosed which is equipped on its free end with a supporting element which forms an essentially radially extending supporting surface for a vibrating ball of a step bearing. The supporting element is made of a material, preferably for a ceramic material, which has a higher hardness than steel. The supporting element is arranged in a receiving device concentric with respect to the axis of the shaft in such a manner that the supporting surface projects slightly from the front face of the shaft.

Abstract: In a process for exchanging blocks of cans on a spinning machine, it is provided that the exchanging of the cans is carried out when the spinning operation is interrupted. During or after the removal of all cans spun empty, the depositing sites, row by row, are supplied with full cans. Subsequently, the spinning stations belonging to these depositing sites are prepared, row by row, for the withdrawal of the slivers from these supplied cans, in which case maximally two rows of depositing sites are charged and the pertaining spinning stations are prepared before the next maximally two rows of depositing sites are charged.

Abstract: In the case of a spinning machine having spinning stations arranged on one side of the machine and having depositing sites for cans containing the fiber material to be spun provided on the other side of the machine, devices are provided for the withdrawal and feeding of the slivers which have drivable guiding belts which extend from an area above the depositing sites to the area of the spinning stations.