With Housing For Drive Or Support Patents (Class 57/406)
  • Patent number: 5280700
    Abstract: A rotor cover designed with a sealing surface interacting with a compressed-air connection, whereby the compressed-air connection is effected via a connecting piece located between the rotor cover and the appertaining mounting plate.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: January 25, 1994
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Manfred Haase, Josef Schermer, Dieter Fritsch
  • Patent number: 5261221
    Abstract: In the case of an open-end spinning rotor assembly composed of a rotor and a rotor shaft, it is provided that the free end of the rotor shaft is equipped with an exchangeable supporting element assigned to a step bearing. The supporting element has a centric guiding surface which is assigned to a concentric guiding surface of the shaft, the axial length of the guiding surface of the supporting element being larger than half the overall axial length of the supporting element.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: November 16, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Gerhard Fetzer, Fritz Wabitsch
  • Patent number: 5222353
    Abstract: An open-end spinning rotor assembly is disclosed which includes a rotor shaft which has one end thereof supporting a spinning rotor. At an opposite axial end face of the rotor shaft, a small round plate is mounted which serves as an axial bearing surface engageable with a step bearing. The round plate is attached in a precise position on the corresponding round surface on the rotor shaft axial end. In certain preferred embodiments, the round plate and the rotor shaft end face are provided with recesses for accommodating glue or other adhesive.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: June 29, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 5221133
    Abstract: A supporting disk for the rotor of an open-end spinning machine, comprising a hub ring of metallic material and a support ring made of elastomer polyurethane that is affixed to the outer surface of the hub ring, whereby the support ring is affixed to the outer surface of an auxiliary ring consisting of polymer material. The material of the auxiliary ring has a modulus of elasticity of 7000 to 13,000 N/mm.sup.2, a dimensional stability under heat from 150.degree. to 250.degree. C., as well as an elongation at break of 1.3 to 3%. It is affixed with radial widening of its inside diameter and with an interference fit to the outer surface of the hub ring.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: June 22, 1993
    Assignee: Firma Carl Freudenberg
    Inventors: Otmar Braun, Herbert Schumacher
  • Patent number: 5209055
    Abstract: In an open-end spinning device with a spinning rotor whose shaft bears axially upon the ball of a step bearing, said step bearing is designed for the attenuation of axial oscillations and shocks of the spinning rotor. The bearing includes an elongated housing provided with a ball supporting member and a resilient member.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: May 11, 1993
    Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft
    Inventors: Eugen Hini, Erich Bock, Eberhard Grimm
  • Patent number: 5178473
    Abstract: A supporting-disk bearing, particularly for the shaft of an open-end spinning rotor, the shaft (1) being mounted in a wedge-shaped gap formed by supporting disks (4, 5), and the supporting disks (4, 5) having a running surface (40,50) consisting of an elastic covering against which the shaft (1) is pressed. The running surface (40,50) has at least one interruption formed by a recess and bridged by the line of contact of the shaft (1). The recess can be designed in various ways, but it is preferably groove-shaped. The wear of the running surface is reduced as a result of this design.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 12, 1993
    Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft
    Inventors: Rudolf Oexler, Hans Landwehrkamp, Kurt Beitzinger
  • Patent number: 5175992
    Abstract: A method and apparatus for preventing that an open-end spinning rotor becomes inoperative. In an open-end spinning rotor assembly which has a rotor with a fiber collecting groove and a rotor shaft, it is provided that the operability of the open-end spinning rotor after the wearing-out of the rotor shaft in the are of the step bearing surface is restored by the fact that the distance between the fiber collecting groove and the step bearing surface is restored to its predetermined value by the axial shifting of the shaft in the hub of the rotor plate.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: January 5, 1993
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 5127218
    Abstract: A textile spindle for treating textile or the like, the spindle including a shaft driven by an individual motor. The rotor of the motor is on the shaft. A double row bearing includes an inner ring on the shaft. An outer ring of the bearing is supported in the spindle housing by two axially spaced apart rubber/metal elements. Two additional elastic damping elements attach the spindle housing to a spindle bearing plate. The motor stator is supported in a motor housing attached stationary with the spindle housing.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: July 7, 1992
    Assignee: Fag Kugelfischer Georg Schaefer
    Inventors: Manfred Schiesser, Edwin Hey, Gunter Oppel, Gunther Schmitt, Wolfgang Schmucker
  • Patent number: 4989401
    Abstract: In the case of a brake for an open-end spinning rotor which, by a shaft, is disposed in a wedge-shaped gap of at least one pair of supporting disks, two mirror-symmetrically arranged tong arms are provided which can each be swivelled around an axle extending in parallel to the shaft. The double-armed tong arms, at one arm, are equipped with brake linings which can be applied to the shaft. The arms facing away from the shaft are spread apart by a common actuating element. The actuating element can be moved freely in moving direction of the arms.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: February 5, 1991
    Assignee: Wilhelm Stahlecker GmbH
    Inventors: Wolfgang Feuchter, Dieter Gotz
  • Patent number: 4932199
    Abstract: The instant invention relates to an open-end spinning device in which the spinning rotor is mounted on the drive shaft. The bearing and braking means are designed so that the spinning rotor can also be operated and braked securely at high rotational speeds. This is achieved by installing the braking means between the open end of the spinning rotor and the rotor shaft bearing system.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: June 12, 1990
    Assignee: Schubert & Salzer Maschinenfabrik Akitengesellschaft
    Inventor: Eberhard Grimm
  • Patent number: 4916891
    Abstract: An open-end rotor spinning machine which operates at rotor speeds higher than 100,000 rpm is constructed so that the critical system rotational speed is higher than the 100,000 rpm operating rotational speed. The rotatable rotor has a shaft bearingly supported in the nip between at least two pairs of supporting disks. Each disk has a plastic outer covering around the circumferential surface thereof and preferably is provided with at least one recess along its circumference. An elastic support surface preferably covers the circumference of each disk and is disposed between the disk and its outer plastic covering. The interior distance between the disks is from 20 to 69 mm. A circumferential recess preferably is disposed in at least on of the lateral surfaces of the plastic covering of each supporting disk.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: April 17, 1990
    Inventors: Hans Landwehrkamp, Eugen Hini, Eberhard Grimm
  • Patent number: 4899528
    Abstract: A device for the control of an open-end spinning element, including a pivoted control lever (4) is provided which is capable of assuming three different working positions. In a production position the control lever brings a first drive, running at production speed, into driving contact in the operation of the open-end spinning element. In a braking position the control lever brings a brake to act upon the spinning element. The control lever in a piecing position brings a second drive which runs at a lower speed than the first drive into driving contact with the open-end spinning element. At least the positions determining the production and the piecing position of the control lever are provided with a common control element, capable of being moved back and forth in the direction of movement of the free end of the control lever between at least two switching positions.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: February 13, 1990
    Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft
    Inventors: Maximilian Fahmuller, Edmund Schuller, Gottfried Schneider
  • Patent number: 4893947
    Abstract: A rotor shaft disk is presented which is formed from synthetic components and includes a plastic hub construction which provides the disk with durabilty and long wear characteristics. The hub is formed from a glass-filled thermoplastic nylon-based resin and includes a series of indentions therearound for joining to the tire. The indentions are formed in the hub to undercut the surface of the hub whereby during the manufacturing process the elastomer of the tire fills the indentions for superior structural integrity of the disk.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: January 16, 1990
    Inventor: Robert E. Hurley
  • Patent number: 4892422
    Abstract: A support assembly is disclosed which is adapted to be mounted in adjacent pairs to form a wedge shaped cusp for rotatably supporting a shaft of a spinning rotor of an open end yarn spinning apparatus. The assembly includes a support shaft, a bearing mounted on the shaft, and a pair of discs mounted on the shaft on respective opposite sides of the bearing. Each disc comprises an annular metal body member which is mounted upon the support shaft by a press fit, and an annular ring assembly mounted coaxially upon the other periphery of the body member by a self-holding but readily releaseable interconnection. The ring assembly includes an inner metal ring, and an outer plastic ring which is fixedly mounted to the inner metal ring, and the releasable interconnection of the ring assembly to the body member permits the ring assembly to be readily replaced when the plastic ring becomes worn from use, and without releasing the press fit between the body member and support shaft.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: January 9, 1990
    Assignee: American Suessen Corporation
    Inventor: Peter H. Stahlecker
  • Patent number: 4890942
    Abstract: A support disk assembly for rotatably mounting alongside a like support disk assembly as a bearing for rotatably supporting a shaft, such as the rotor shaft of an open end spinning machine. The disk assembly includes a pair of disk members each with a respective clamping flange selectively attachable and detachable from one another for grippingly retaining a tread member between the clamping flanges in operation while permitting easy removal and replacement of the tread member when worn by disassembly of the disk members.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: January 2, 1990
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4875334
    Abstract: A spindle is provided which is intended especially for use in the mounting arrangement of a spinning rotor within the spinning housing of a textile spinning machine. The spindle comprises an outer sleeve, two rows of balls disposed in cages, and a shaft whose external end portion is adapted to be driven by a drive arrangement for inducing rotary motion. The internal end portion of the shaft is disposed within the outer sleeve and forms a dynamically elastic portion of the shaft having a smaller diameter than that of the main spindle shaft. The spinning rotor is pressed on the dynamically elastic portion of the shaft. Between the rotor space, behind the spinning rotor and a compensation space, a rotary, or non-rotary, gasket is provided which includes a labyrinth knife.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: October 24, 1989
    Assignee: Zavody na vyrobu lozisk, Povazska Bystrica
    Inventors: Zdenek Rajsigl, Frantisek Kriz
  • Patent number: 4854119
    Abstract: An open-end rotor spinning apparatus is provided which includes a spinning rotor element for forming yarn including an open side. A cover element is provided for covering the open side of the spinning rotor element. A projection element is disposed at the cover element and projects into the side of the spinning rotor element. A fiber feeding duct is disposed in the projection element. A yarn withdrawal duct is also disposed in the projection element and provides a pathway for formed yarn being withdrawn from the spinning rotor element. A yarn withdrawal nozzle element projects from the yarn withdrawal duct element into the spinning rotor element open side. Holding elements are provided other than the yarn withdrawal duct element which hold the yarn withdrawal nozzle element on the projection element.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: August 8, 1989
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker, Wolfgang Feuchter
  • Patent number: 4785620
    Abstract: A bearing and driving unit for a spinning rotor of an open-end spinning unit is provided. A braking element is provided for braking a rotor shaft, and a cleaning element is provided for cleaning the rotor shaft. Actuating elements are provided for activating and deactivating the braking element and the cleaning element. The cleaning element is applied to the rotor shaft with a contact force which is controlled independent of a contact force control of the braking element.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: November 22, 1988
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Wolfgang Feuchter
  • Patent number: 4773210
    Abstract: The invention relates to an open-end rotor-spinning device with a rotor shaft which is mounted and driven in the wedge-shaped gap between supporting disks and to the free end of which is assigned an axial bearing. A simplified mounting, which also allows the supporting disks to be removed and exchanged while the machine is in operation, is provided because the rotor shaft (1) is mounted at two bearing points, of which one is formed by supporting disks (2, 3) arranged in the vicinity of the spinning rotor (10) and the second is a bearing (5) which absorbs axial and radial forces and which receives the free end (11) of the rotor shaft (1). An increase in the operating speed of the spinning rotor (10) without an increase in the running speed of the drive means (6) is achieved as a result of a reduction of the diameter of the rotor shaft (1) in the region of the drive means.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: September 27, 1988
    Assignee: Schubert & Salzer
    Inventors: Hans Landwehrkamp, Eberhard Grimm, Eugen Hini, Kurt Inderst
  • Patent number: 4763469
    Abstract: An apparatus for open-end rotor spinning is provided which includes a spinning rotor having a rotor shaft and a spinning rotor plate on one end of the rotor shaft. At least one pair of supporting disks is provided in between which the rotor shaft is disposed. The supporting disks are disposed in a bearing block. A step bearing element is provided which supports the rotor shaft in axial direction on an end opposite the rotor blade. The step bearing element is mounted at the bearing block. A rotor housing element surrounds the rotor plate. The rotor housing element is held and centered directly at the bearing block. The bearing block serves as a carrying element for the step bearing element and the rotor element.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: August 16, 1988
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 4763465
    Abstract: A braking device for a rotor shaft of a rotor spinning machine of the type having spaced pairs of rotating bearing support discs. A brake shoe is pivoted for movement upwardly between the bearing support discs and a pair of holddown elements are pivoted for movement downwardly from above the bearing support discs against the rotor shaft to hold the rotor shaft in the nip of the bearing support discs while the brake shoe is acting to brake the rotor shaft, with the holddown elements applying a cleaning action on the rotor shaft. The manipulating mechanism for the holddown elements and brake shoe are such as to apply a greater force downwardly through the holddown elements than is applied upwardly by the brake shoe so that the rotor shaft will remain in the nip of the bearing support discs during the application of braking by the brake shoe.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: August 16, 1988
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4760688
    Abstract: In an open-end spinning machine, a centralized main drive is provided to collectively drive spinning elements of a plurality of spinning stations installed next to each other. At each spinning station, a switch-over device is provided for switching each spinning station over to a stationary, centralized auxiliary drive. The main drive includes a main drive belt to collectively drive the plurality of spinning elements. An auxiliary drive belt driven at a second speed for selectively driving individual spinning units is powered by the stationary centralized auxiliary drive. Using its respective switch-over device, either the main drive belt or the auxiliary drive belt can be selected to drive a given spinning unit. Thread joining preferably takes place at a spinning unit (e.g. spinning rotor) speed relatively close to the production speed of the spinning unit so that strong thread joins and consistent thread results.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: August 2, 1988
    Assignee: Schubert & Salzer Maschinenfabrik
    Inventor: Kurt Beitzinger
  • Patent number: 4753067
    Abstract: In an open-end rotor spinning machine having a plurality of spinning stations located next to one another, each spinning station has a spinning rotor (40) which is arranged in a housing (1) and has a drive spindle (42) extending transversely to the machine longitudinal direction. This drive spindle (42) is mounted in the gusset portion of a supporting disk bearing (44). The supporting disk bearing (44) is supported by the housing (1) which accommodates the spinning rotor (40) and which is mounted on a swivelling axis (10). The spinning rotor (40) is driven by a drive belt (43) extending in the machine longitudinal direction. The housing (1) can be swivelled away from this drive belt (43) to such an extent that the housing (1) can be removed from its receptacle on the machine side.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: June 28, 1988
    Assignee: Schubert & Salzer
    Inventors: Hans Landwehrkamp, Eberhard Grimm
  • Patent number: 4713932
    Abstract: In the case of a supporting disk for a supporting disk bearing for a shaft of an open-end spinning rotor having a disk-shaped basic body made of metal that, on its circumference, is equipped with a ring made of plastic, the outer surface of which forms a smooth, uninterrupted essentially cylindrical running surface, it is provided that the inner surface of the ring has a profiling by means of which the thickness of the ring is reduced in the central area as compared to the edge areas.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: December 22, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Werner Zott
  • Patent number: 4703616
    Abstract: A bearing and driving assembly is disclosed for an open and spinning rotor unit of a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft. A tension roller is loaded against the tangential belt. To minimize failures of such a system caused by a resonant system vibrations and to facilitate high spinning speeds with minimal manufacturing expenses, the supporting disk pairs are axially spaced a distance slightly larger than the axial width of the tension roller. Brake members are disposed below the tangential belt so as to be applied with substantially horizontal movement radially against the rotor shaft.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: November 3, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Wolfgang Feuchter, Dieter Goetz, Friedbert Schmid
  • Patent number: 4679390
    Abstract: An opening roller assembly for open end spinning machines wherein the roller is releasably and slidably supported on a drive shaft of the open end spinning machine to enable easy removal of the roller for refurbishing, replacement or repair. Non-mechanical means is provided to maintain the roller in an operative position on the drive shaft. Such means may comprise magnetic or fluid pressure means, or gravity. When in its operative position on the shaft, mechanical drive means extending directly or indirectly between the drive shaft and the roller will automatically become engaged. These drive means may be provided by a drive pin or mating engaging surfaces, for example.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: July 14, 1987
    Assignee: Wm. R. Stewart & Sons (Hacklemakers) Limited
    Inventor: William R. Stewart
  • Patent number: 4667464
    Abstract: A bearing and driving assembly is disclosed for an open end spinning rotor at a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft of the radial side thereof opposite the twin dusk arrangement. To minimize failures of such a system caused by resonant system vibrations and to facilitate high spinning speeds with minimal manufacturing expenses, the assembly is designed so that the system critical velocity where excessive resonant vibrations may occur is substantially lower than spinning operational speeds.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: May 26, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventors: Fritz Stahlecker, Wolfgang Feuchter, Dieter G/o/ tz, Friedbert Schmid, Werner Zott
  • Patent number: 4653266
    Abstract: A fiber feed channel of an open-end spinning apparatus is divided by a parting face into a stationary part and a movable part, including a pivoted cover. The parting face includes an elastic O-ring, the surface of which is disposed at a predetermined minimum angle .alpha. relative the direction of movement of the pivoted cover. Such orientation ensures a relatively perpendicular component of contact between the O-ring and the pivotal cover, thereby reducing sliding friction between the two which prolongs the life of the O-ring while providing a good seal. Two interacting elements, one arranged on the cover and the other arranged on the spinning element housing, define a stop for positioning the cover relative to the spinning element.
    Type: Grant
    Filed: April 2, 1986
    Date of Patent: March 31, 1987
    Assignee: Schubert & Salzer
    Inventors: Rudolf Oexler, Kurt Veit
  • Patent number: 4653265
    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.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: March 31, 1987
    Assignees: Fritz Stahlecker, Stahlecker: Hans
    Inventors: Fritz Stahlecker, Hans Raasch
  • Patent number: 4633664
    Abstract: In an open-end rotor spinning apparatus, the driven rotor shaft (2) of the spinning rotor (1) is mounted by means of bearing members (20) for rotation in a casing (3) which is inserted into a mounting on the machine. The replacement of the spinning rotor (1) together with the bearing casing (3), without exerting a load on the bearings, is made possible by a flange (60) which is disposed on the bearing casing (3) and which extends along the rear side of the spinning rotor (1) and projects at least over the major diameter of the spinning rotor. During replacement of the rotor, the flange (60) serves as a handle, and in normal operation it serves as an additional cooling means for the bearings. By means of a ring (61) mounted on the flange (60), it is possible to form a casing (6) which is open at the front and which, with slight clearance, surrounds the outside contour of the spinning rotor (1) and reduces the consumption of energy.
    Type: Grant
    Filed: June 12, 1984
    Date of Patent: January 6, 1987
    Inventors: Hans-Friedrich Mueller-Storz, Erich Bock
  • Patent number: 4606185
    Abstract: A friction spinning frame including a pair of twisting rollers disposed substantially in parallel and driven in the same direction to each other at a small gap therebetween to form a yarn forming zone of a valley shaped profile on upper surfaces of the twisting rollers along the gap. At least one of the twisting rollers is a perforated hollow roller including an outer shell having a plurality of perforations on the entire outer surface thereof and a suction device for providing a suction force through the perforations, whereby staple fibers are twisted to form a yarn while being sucked and held on the yarn forming zone.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: August 19, 1986
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Meiji Anahara, Shigeru Muramatsu
  • Patent number: 4574577
    Abstract: In the case of an arrangement for disposing and driving a spinning rotor of an open-end spinning unit which, by means of a rotor shaft, is disposed in wedge-shaped gaps formed by two pairs of supporting disks and is driven by a belt looping around it, it is provided that the belt is looped around a driving pulley of an electric motor which, with respect to the supporting disks, is arranged in the area opposite the rotor shaft and which, for the tightening of the belt, is movably held in a guide in a plane extending at least approximately through the wedge-shaped gap. A belt holding device is provided for holding the belt in a relaxed position so that the spinning rotor shaft can be readily axially withdrawn and exchanged without requiring any disassembly of the belt drive.
    Type: Grant
    Filed: January 17, 1985
    Date of Patent: March 11, 1986
    Assignees: Hans Stahlecker, Fritz Stahlecker, W. Schlafhorst & Co.
    Inventors: Josef Derichs, Fritz Stahlecker
  • Patent number: 4570435
    Abstract: An open-end friction spinning machine is disclosed having a plurality of spinning units which each include adjacently arranged rollers driven in the same rotational direction and forming an accessible wedge-shaped yarn forming gap. A fiber inlet and opening device is provided for opening fiber material to be spun. A fiber feed channel connects to the inlet and opening device and has its fiber feed outlet opening to the yarn forming gap. The yarn withdrawal device draws off the produced yarn in the longitudinal direction of the yarn forming gap. Each spinning unit is provided with a channel carrier removable for the exposure of the yarn forming gap, which channel carrier forms at least one portion of the fiber feed channel containing the fiber feed outlet opening of the same. The channel carrier is adjusted in its operational position by means of centering means with respect to both the inlet and opening device and the bearing housing for the friction rollers.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: February 18, 1986
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 4563874
    Abstract: In a driving gear of a rotor type open end fine spinning machine, a rotation shaft of a spinning rotor and a drive shaft are connected through a speed multiplying mechanism, the spinning rotor facing to a fiber feed passage and a yarn taking passage is rotated at a multiplied speed by rotation driving of the drive shaft, a cover is installed to surround the spinning rotor and the rotation shaft thereof, an air passage is constituted so that air flow to guide fibers at the fiber feed passage into the spinning rotor passes through inside of the cover and is exhausted out of an exhaust port provided on the cover, and air flow passing through the air passage eliminates the friction heat caused by rotation of the spinning rotor.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: January 14, 1986
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Junzo Hasegawa, Susumu Kawabata, Nobuharu Mimura, Masao Kitano
  • Patent number: 4553384
    Abstract: A guard is provided for a take-up shaft of an open-end yarn spinning machine. The shaft rotates about a first axis and cooperates with a cot (a small rubber wheel) which is rotatable about a second axis parallel to the first axis. The guard comprises a tubular body member, preferably circular in cross-section, having a central axis and first and second ends spaced from each other along the central axis. A slot is formed in the body, and the body surrounds the shaft. The body is concentric with the shaft and the slot is disposed beneath the shaft. A cut-out is formed adjacent, but spaced from, the first end of the shaft, and the cot operatively engages the shaft through the cut-out. The slot and cut-out preferably interconnect. A mounting bracket is joined to the body member at the second end of the body member preferably comprises a Y-shaped bracket having a stem integral with the body member and branches with openings for receipt of fasteners.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: November 19, 1985
    Assignee: Burlington Industries, Inc.
    Inventors: Charles L. Crocker, Michael Wallace, Lee Powell
  • Patent number: 4543780
    Abstract: In order to be able to achieve, in yarn manufacture, the very high speeds required by the textile industry in open-end spinning devices, for the purpose of increasing production, and in order to achieve high operating reliability and a long life of the spinning devices, the rotor which rotates at high speeds and is subject to a variable imbalance and which is guided in gas-dynamic radial plain bearings is guided in a bearing carrier which is elastically pivotable in relation to the rigid bearing journal. At the same time, the bearing journal is connected, but so as to be elastically pivotable, to the bearing carrier via a bearing-body joint. A first gas-dynamic radial plain bearing, which is located in the region in the center of gravity of the rotor, is arranged on the bearing carrier, and a second gas-dynamic radial bearing is arranged at the opposite end of the bearing carrier.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: October 1, 1985
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventors: Alfred Muller, Harry Seiffert
  • Patent number: 4539807
    Abstract: Open end friction spinning apparatus is provided in which there are one or more spinning units with respectively two adjacently arranged rollers, rotating in the same direction, and disposed to form a wedge shaped gap therebetween for accepting fibers and spinning them into a thread of yarn. A housing is provided for each spinning unit, which housing includes a stationary housing part carrying bearing devices for the rollers and a hingedly mounted cover type housing part connected at a pivot axle. The cover type housing part carries at least a part of a feeding channel for feeding fibers to the rollers to be spun.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: September 10, 1985
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 4537022
    Abstract: Apparatus is disclosed for adjustably supporting the friction rollers for an open-end friction spinning unit having two friction rollers that are arranged next to one another and form a wedge-shaped yarn forming gap. The rollers are mounted by means of bearings on non-rotating axles. In the area of the end faces of the friction rollers the non-rotating axles are held by means of holding devices, the spacing of which can be adjusted. Four holding devices arranged in pairs are provided for the axles, where at least between the holding devices of one pair, an adjusting screw is mounted extending transversely to the wedge-shaped gap, by means of which the spacing of said holding devices and thus the size of the wedge-shaped gap, can be adjusted.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: August 27, 1985
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 4519205
    Abstract: So as to be able to achieve, in yarn manufacture, the very high speed required by the textile industry in open-end spinning devices, for the purpose of increasing production, the rotors which are connected to the spinning container including a spinning groove, are designed as a hollow shaft, and this hollow shaft is guided radially on a bearing journal located in the interior of the hollow shaft by means of gas-dynamic radial plain bearings designed as inner bearings. Gas-dynamic axial plain bearings are provided for the axial guidance of the rotor rotating at very high speed. The rotor together with the spinning container can be pushed in and out in a simple way from the spinning side, and to position the rotor over the entire speed range, permanent magnets are located in the bearing journal opposite the rearside of the spinning container and in an annular widened portion of the bearing journal.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: May 28, 1985
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Hans-Rudolf Gubler
  • Patent number: 4513566
    Abstract: Resilient high-speed rotor support, especially applicable to rotor shafts open-end spinning machines. The support is made up of a double-row rolling bearing, a rotor shaft, and a central sleeve for the bearing, as well as resilient damping elements disposed at the ends of the central sleeve and fixed within the housing of the spinning mechanism. At the stepped ends of the central sleeve there are fixed resilient damping elements by means of their radially inner annular parts, the external circumference of the damping elements, reduced by the height of the limiting gap between them and the housing, extends to the circumference of marginal orifices within the housing. The bore at the rotor end of the central sleeve is formed with a tolerance to provide a running fit with the rotor hub. The support of the invention is applicable especially in spinning machines operating with rotor speeds exceeding 60,000 RPM.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: April 30, 1985
    Assignee: ZVL Vyzkumny ustav pro valiva loziska Brno koncernova ucelova organizace
    Inventors: Zdenek Rajsigl, Milos Mladek, Michal Blasko, Josef Smatana
  • Patent number: 4502272
    Abstract: Apparatus for making a yarn comprises two juxtaposed, closely spaced apart suction drums, which are rotated in the same sense and each of which contains a suction insert, which is formed with a suction slot that faces the generally triangular space between the two suction drums. To permit the use of a lower suction flow rate and to ensure that this will not adversely affect the quality of the resulting yarn, each suction insert is mounted to be rotatable about the axis of the associated suction drum and positioning drive means are provided, which serve to rotate the suction inserts in mutually opposite senses and comprise two worm wheels, which are secured to respective stub shafts, which protrude axially from the suction drums and are secured to respective ones of the suction inserts, and two worm-carrying shafts, which are in mesh with respective ones of said worm wheels.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: March 5, 1985
    Assignee: Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft
    Inventor: Helmut Fuchs
  • Patent number: 4461141
    Abstract: An insert (3) is arranged in the interior space (10) of a housing (1) of an opening device for an open-end spinning apparatus. The insert (3) is of pot-like construction with a recess (35) provided in the base (34). The recess (35) exposes a bearing bore (18) through which a drive shaft extends for supporting the opening roller. A fixing device (41, 42) is likewise associated with the insert (3) securing its relative position to the housing. A guide element (5) introducible into the insert (3) is provided to guide the insert (3) during introduction into the housing (1) or during its removal. This has a contour corresponding to the interior space (10) of the housing (1) and one or more positioning lugs (50) on its end face opposite the base (34), corresponding to the number of the positioning cavities provided in the insert (3).
    Type: Grant
    Filed: March 1, 1983
    Date of Patent: July 24, 1984
    Assignee: Schubert & Salzer, AG
    Inventors: Eberhard Hofmann, Gottfried Schneider, Johann Pohn
  • Patent number: 4383406
    Abstract: Apparatus for sealing a rotor housing of an open-end spinning machine is disclosed wherein the housing is under a reduced-pressure and includes a bore through which a rotor shaft of the spinning rotor extends. The apparatus includes a mounting carried by the rotor housing for floatingly mounting a sealing washer relative to the bore of the housing and a counter-surface carried adjacent the reduced-pressure side of the housing against which the sealing washer is abutted and maintained by the reduced pressure in the housing.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: May 17, 1983
    Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft
    Inventors: Rudolf Oexler, Eberhard Grimm
  • Patent number: RE32494
    Abstract: A friction spinning frame including a pair of twisting rollers disposed substantially in parallel and driven in the same direction to each other at a small gap therebetween to form a yarn forming zone of a valley shaped profile on upper surfaces of the twisting rollers along the gap. At least one of the twisting rollers is a perforated hollow roller including an outer shell having a plurality of perforations on the entire outer surface thereof and a suction device for providing a suction force through the perforations, whereby staple fibers are twisted to form a yarn while being sucked and held on the yarn forming zone.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: September 8, 1987
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Meiji Anahara, Shigeru Muramatsu