Abstract: The invention provides a novel memory for which process technology is relatively simple and which can store multivalued information by a small number of elements. A part of a shape of the first electrode in the first storage element is made different from a shape of the first electrode in the second storage element, and thereby voltage values which change electric resistance between the first electrode and the second electrode are varied, so that one memory cell stores multivalued information over one bit. By partially processing the first electrode, storage capacity per unit area can be increased.

Abstract: The present invention relates to a cleaning device (1) of a rotor spinning unit with a cleaning head (63) and an extensible device (12, 31) to extend and retract at least the cleaning head (63). According to the invention, the cleaning head (63) is replaceable and connected to the extensible device (12, 31).

Abstract: A method of spinning-in yarn on an operating unit of a rotor spinning machine includes steps of yarn preparation for spinning-in, steps of spinning rotor preparation for spinning-in, and final spinning-in steps. The final spinning-in steps include at least the beginning of the sliver supply to the singling-out device, leading of the fibers from the singling-out device away from the spinning rotor for a predetermined time interval, letting the spinning-in yarn end get into contact with the collecting groove of the spinning rotor, and starting of the yarn draw-off and winding. At least some final spinning-in steps are time synchronized in relation to the closing of the spinning unit thus obtaining optimum piecer quality repeatedly at all operating units of the machine.

Abstract: A device (6) for holding and centering yam tubes (3) for processing while in a vertical orientation on transport disks (2), e.g., for removing a yam remnant (4) at a tube cleaning station. During such processing, the tubes are fixed in place by means of a height-displaceable centering arbor (12) coupled with a circuit arrangement which causes the operating height (h) of the centering arbor (12) to be automatically matched to the length of the respectively provided tube (3). An arresting arrangement (20) assure that the centering arbor (12) is securely fixed in place at each of its operating heights (h).

Abstract: An underwinding thread clamp for a spindle of a ring spinning or ring-twisting machine has a clamping sleeve biased by a spring against and juxtaposed with a collar on the spindle. The juxtaposed surfaces of the spindle and collar have wavy contours so that, upon engagement of an actuating member with each collar, the latter is cammed into its open position to release the respective underwinding thread so that the latter, engaged when a full bobbin was removed, can be released. The clamping of the underwinding thread permits the thread to be wound on the newly mounted core sleeve.

Abstract: A cleaner for a roving apparatus which is free from an adverse effect caused by air flow blowing along an upper surface of a roller beam rearward of the roller beam, and which, after the fibers scraped from the bottom clearer cloth are collected to the rear of the roller beam, conveys the fibers to the end of an apparatus frame. The fibers, etc., adhered to the bottom clearer cloth are scraped by a scraper to fall onto a roller beam 1. The fallen fibers, etc., and the fiber waste which tends to be accumulated onto the upper surface of the roller beam are guided to a guide rail 25 by the action of air flow blowing from an air-blowing tube, to thereby accumulate on a bottom part 25a of the guide rail 25. The fibers, etc., are conveyed to the end of the guide rail 25 by a scraper 41 moving along the guide rail 25, and then collected in a dust box provided at the end of the apparatus frame. The bottom part 25a of the guide rail 25 is located lower than the upper surface of the roller beam 1.

Abstract: A device for centering tubes during their processing, for example in a tube cleaning station of a textile machine. In a textile machine provided with several batches of tubes of differing length, diameter and/or material, which cannot be processed together in known cleaning devices, the present device has a rotatably seated holder with at least two differing centering devices adapted for different tubes for selective positionability relative to the tubes to be centered according to sensor devices which detect the differing physical characteristics of the tubes.

Abstract: A method and system for maintaining spinning machines having a plurality of spinning stations include automatically positioning a maintenance unit proximate to the spinning stations for removing spinning components from the spinning stations and replacing the removed spinning components with replacement spinning components. The maintenance unit is configured to remove the spinning component from the spinning station for servicing, to immediately replace the removed spinning component with a replacement spinning component which is carried by the maintenance unit, and to transfer the removed spinning component to a remote service station. The removed spinning component is serviced at the service station and is subsequently picked up by the maintenance unit for subsequent installation into another spinning station.

Abstract: Apparatus for supplying conditioned air to spinning machines which includes a duct for transporting conditioned air to the machine, such duct having an opening through which the conditioned air exits the duct. An air diffuser is mounted on the duct adjacent the opening therein, and it includes a generally V-shaped air directing wall that has upper flanges extending outwardly therefrom, with openings in such flanges, whereby a minor portion of the conditioned air flows upwardly through the openings in the flange and is directed toward the open end spinning machine, and a major portion of the conditioned air is directed outwardly toward the sliver being fed to the machine.

Abstract: In a ring-spinning or -twisting machine a longitudinal row of upright and normally rotating spindles mounted on a common support beam each have a lower reserve surface below a sleeve normally carried on the spindle. An apparatus for clearing roving wound on the surface has a guide rail extending longitudinally along a back side of the beam adjacent the spindles, a carriage displaceable along the rail past the spindles, and a drive including a longitudinally extending drive element secured to the carriage for displacing same longitudinally along the rail past the spindles. A roving-cutting element is fixed on the carriage engageable immediately adjacent the spindles between the respective lower reserve surfaces and sleeves and a roving-clearing element is fixed on the carriage below the cutting element and engageable immediately adjacent the lower reserve surfaces of the spindles.

Abstract: In the case of a spinning machine having a plurality of spinning stations spinning yarn from slivers and having transport devices for removing the slivers from cans and for guiding the slivers to the spinning stations, it is provided that, for the preparation of the start spinning of the spinning machine, the slivers are first deposited in receiving devices which are situated in the area of the outlet of the transport devices. Subsequently, the slivers are successively taken out of these receiving devices and are placed in the spinning stations.

Abstract: A chip collecting system for a bobbin replacing apparatus wherein roving chips and fleece are temporarily accommodated in a chip collecting chamber of the bobbin replacing apparatus through a suction pipe. Upon arrival of the bobbin replacing apparatus to a position that opposes a chip removing system, a communicating member is connected to the chip removing system to communicate the chamber to the outside, whereupon the roving chips in the chamber are removed by the chip removing system.

Abstract: A method of cleaning a yarn supply package protective pot and, preferably, a balloon limiter device of a spindle assembly of a two-for-one twister yarn processing machine with a maintenance device mounted for movement longitudinally along the machine and to each of the spindle assemblies. The methods include moving a gripper device of a first cleaning device out of the maintenance device and into the protective pot of the selected spindle assembly for gripping and moving the protective pot out of the spindle assembly and into the maintenance device, while cleaning the protective pot in the maintenance device and then returning the protective pot to the spindle assembly. When the balloon limiter is also cleaned, a second cleaning device is moved out of the maintenance device and into the balloon limiter device of the spindle assembly while the protective pot has been removed and is being cleaned in the maintenance device.

Abstract: A cleaner for a spinning machine which includes a plurality of drafting mechanisms arranged along an axis of the spinning machine. The cleaner includes a cleaning belt, arranged in each one of the drafting mechanisms to contact at least one drafting roller in the one drafting mechanism, for cleaning fiber dust and lint from at least one drafting roller in the one drafting mechanism; a transporting belt, arranged to contact each of the cleaning belts, for transporting the fiber dust and lint from each of the cleaning belts along the axis of the spinning machine; a scratch-off roller, which contacts the transporting belt and rotates at an angle relative to a running direction of the transporting belt, for removing the fiber dust and lint from the transporting roller; a mechanism for wiping fiber dust and lint from the scratch-off roller; and a mechanism for suctioning the fiber dust and lint which is wiped from the scratch-off roller by the wiping mechanism.

Abstract: In a spinning machine for pneumatic false-twist spinning, a plurality of spinning points are provided which are each equipped with one drafting unit. Two air nozzles are connected behind a pair of delivery rollers of the drafting unit and are pivotable around a separate swivel shaft and are connected by a restricted guidance in such a manner that, by an actuating movement, they can be moved into servicing positions which deviate from one another.

Abstract: A roving bobbin carrier system having a single carrier line for conveying a plurality of full wound roving bobbins from a roving frame to a fine spinning frame and conveying a plurality of unwound roving bobbins from the fine spinning frame to the roving frame with the unwound roving bobbins converted into blank roving bobbins having no residual roving. A stock conveyor is provided at a midway position of the carrier line independently thereof. A residual roving removing device and first and second transfer mechanisms are provided in connection with the stock conveyor to convert the unwound roving bobbins to the blank roving bobbins. Accordingly, the conveyance of the full wound roving bobbins and the unwound roving bobbins can be efficiently carried out through the single carrier line.

Abstract: In a spinning machine having a plurality of drafting units which each comprise several bottom rollers constructed as roller sections, it is provided that the sliver-carrying area of the bottom rollers is separated from the area receiving the clutch element and the driving wheels by means of a partition, the partitions of two adjacent drafting units being connected with one another.

Abstract: In the case of a spinning machine having a plurality of drafting units arranged next to one another which each comprise a stripping device, a cleaning device for the stripping devices is provided which can be moved along the spinning machine. The cleaning device, in each case, moves the stripping devices from an operating position into a cleaning position, in which the cleaning of the stripping device is carried out.

Abstract: A drafting unit is disclosed for a spinning machine having a load carrier which can be swivelied around a carrying rod extending in parallel with respect to bottom rollers. A carrying part is provided for a cleaning device which comprises two cleaning rags constructed as continuous loops, and which is constructed as a frame with two legs extending in parallel with respect to the load carrier and one crosshead. The frame is pivotally disposed at the load carrier in the vicinity of the carrying rod so as to accommodate lifting of the cleaning rags out of their cleaning position without requiring opening of the drafting unit.

Abstract: A device for cleaning protective pots and, if need be, balloon limiters of two-for-one twisting spindles of a two-for-one twister, which comprises cleaning elements, preferably in the form of brush bars, which are arranged on a motor-driven, vertical shaft and preferably adjustable in radial direction, and which can be lowered into a protective pot and, if necessary, into a balloon limiter of a two-for-one twisting spindle, with a suction device for the removal of air laden with dust and dirt particles being associated to each cleaning device. This cleaning device can be a part of an automatic maintenance device.

Abstract: A cleaning device for a drafting device in a spinning machine comprises a clearer device provided at a drafting device of each of a large number of spindles provided in a row in the spinning machine, and a collecting device for fiber waste which reciprocally moves along the large number of spindles provided in a row above the clearer devices while contacting with the clearer devices and exfoliates and removes fiber waste from the clearer devices for the individual spindles.

Abstract: A residual roving clearing apparatus for clearing a residual roving remaining on a roving bobbin. The residual roving clearing apparatus comprises a bobbin holding device for rotatably holding a roving bobbin, a cutting device for cutting layers of coils of residual roving remaining on the roving bobbin held by the bobbin holding device, and a rotary brush device for clearing the residual roving from the roving bobbin. The residual roving clearing apparatus is capable of efficiently clearing the residual roving from the roving bobbin by cutting layers of coils of the residual roving along a cutting line parallel to the axis of the roving bobbin held by the bobbin holding device, and stripping off the cut layers of coils of the residual roving from the roving bobbin by the rotary brush of the rotary brush device.

Abstract: Strand lap-ups may be removed from textile rolls by using the present method and apparatus while the textile rolls remain in position on the textile machine or by initially removing a roll with a lap-up thereon from the textile machine before shearing and severing the lap-up and replacing the removed roll with another roll free of any lap-ups. The present apparatus includes a wheeled hand truck with a vertical array of spaced shelves with at least one of the shelves containing replacement textile rolls and another shelf serving to receive textile rolls having lap-ups thereon. An electrically powered shear is associated with the hand truck and includes a pair of generally parallel cooperating rows of teeth facing in a common direction with the free ends of the teeth being blunt to prevent damage to the roll when being utilized to remove the lap-up from the roll.

Abstract: The spindle assembly is of the type having a spool upon which coils of strand material are formed preparatory to doffing of a strand package from the assembly. The coils are formed without overlapping them upon one another, and preferably without permitting their transverse engagement and possible mutual attachment. First and second oppositely directed helical grooves are respectively provided upon upper and lower portions of the spool. The first groove prevents overlapping and transverse attachment of the strand material as the coils are formed. Both grooves position strand material at a location favorable to clearance from the spool.

Abstract: On textile machines, on which packages are wound with a set or reference yarn length, the changing of these packages by means of a travelling package changing device should be carried out in such time optimized manner that the largest possible number of winding positions can be serviced by the package changing device. For this purpose, the yarn length of packages to be wound is signalled continuously to a computer by means of yarn length measuring units and the location of a package changer is continuously signalled to the computer by means of positioning units. If certain packages reach a remainder or residual yarn length before reaching the set yarn length, then the wind-up times for the remainder yarn length of these packages are compared by the computer with the respective travelling times of a package changer to these packages and registered in an optimization procedure, for example for three of these packages.

Abstract: A device for the uniform retrieval of yarn ends in an air spinning device. A suction force gradient is created between the air jet nozzle and the waste suction pipe. Gravitational force and the suction gradient cause broken yarn ends to drop from the air jet nozzle orifice toward the waste suction pipe. When yarn piecing is desired, a piecing suction pipe retrieves the yarn end from the nozzle orifice.

Abstract: There is described a stator section, for a spindle which has a spindle rotor at least partly enclosing the stator section, wherein the stator section incorporates, in the region occupied by surfaces situated opposite the spindle rotor, a dust and thread catching means. To provide this means, parts of surfaces of the stator lying opposite the rotor may be roughened. For this purpose the stator may be provided with grooves having mechanically-roughened surfaces or may have wound around it a strip of Velcro or strip of some other material, whereby the foreign bodies which are carried by the air, which flows through the rotor on the counter-current principle, collect on the said roughened parts of the surface of the stator or on said strip, as a result of which the foreign bodies are prevented from reaching the region occupied by a spindle bearing arrangement.