Tensioning Patents (Class 57/105)
  • Publication number: 20140202129
    Abstract: An overfeed roller assembly for use on a rotating drive shaft of a textile machine is adapted for adjusting downstream tension in a continuous moving length of yarn. The overfeed roller assembly comprises a base assembly designed for mounting on the drive shaft, and an annular yarn tension adjuster carried by the base assembly. The tension adjuster comprises opposing closely spaced yarn-contacting walls. The yarn-contacting walls define a shallow generally serpentine depression in the tension adjuster adapted for receiving the continuous moving length of yarn. Yarn tension downstream of the roller assembly is thereby reduced as the moving yarn meanders through the tension adjuster in frictional contact with the yarn-contacting walls of the serpentine depression.
    Type: Application
    Filed: June 18, 2012
    Publication date: July 24, 2014
    Inventor: Donald Lynn Hoover
  • Publication number: 20130260129
    Abstract: In a stretch yarn (1) comprising a stretchable core (2) covered by an inelastic fibers sheath (3) the stretchable core (2) comprises first and second fibers (4, 5) that have elastic properties, the first fiber (4) is an elastomer and the second fiber (5) is a polyester based (co)polymer, the amount of the second fiber being in the range of 60-90% (w/w) of the total weight of the fibers of the stretchable core (2); the first and second fibers are connected together at least at a plurality of points (P).
    Type: Application
    Filed: November 14, 2011
    Publication date: October 3, 2013
    Applicant: SANKO TEKSTIL ISLETMELERI SAN. VE TIC. A.S.
    Inventors: Seref Agzikara, Mustafa Zeyrek, Hamit Yenici, Mahmut Ozdemir, Kenan Loyan, Esin Kalfa Kilickan
  • Publication number: 20100009116
    Abstract: It is an object of the present invention to provide round fiber-reinforced plastic strand, a manufacturing method thereof, and a fiber-reinforced sheet which eliminate limitation in forming speed and limit on number of products capable of being manufactured at a time, do not require use of a release agent, eliminate the necessity of operations such as roughing after forming, and thus permit a considerable reduction of the manufacturing cost and a remarkable increase in the product quality.
    Type: Application
    Filed: March 10, 2008
    Publication date: January 14, 2010
    Applicant: NIPPON STEEL COMPOSITE CO., LTD.
    Inventors: Toshikazu Takeda, Masaki Shimada, Hidehiko Hino, Masaki Arazoe
  • Patent number: 6199361
    Abstract: By appropriately controlling a yarn tension of an upstream side from a false twist device, variations in yarn quality among packages can be eliminated. A false twist texturing unit 7 which imparts a yarn Y with a false twist, a first feed roller 4 arranged in the upstream side from the false twist texturing unit 7, and an upstream side yarn tension control device 30 which automatically adjusts the rotation speed of a first feed roller 4 such that the upstream side yarn tension T1 is maintained within a fixed range are provided. A downstream side yarn tension control device 35 which automatically adjusts the false twist device 7 such that downstream side yarn tension T2 is maintained within a fixed range is also provided. Additionally, a determining unit 45 which determines whether or not the yarn quality is satisfactory based on the detection result of an upstream side yarn tension detecting unit 24 and a downstream side yarn tension detection unit 35 is also provided.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: March 13, 2001
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventors: Hiroshi Yakushi, Shinichiro Morimoto
  • Patent number: 6045937
    Abstract: An electrochemical cell, and an associated process, wherein the cell includes a controlled electrode surface comprising an electrode with a carbonaceous surface, an electrolyte and a reduced additive. The reduced additive is formulated from an additive which is either soluble or insoluble in the solvated electrolyte prior to reduction. The invention further includes a passivating layer at the carbonaceous electrode/electrolyte interface. The passivating layer includes the additive and/or the reduced additive. This passivating layer substantially precludes contact between electrolyte solvent and the carbonaceous surface of the electrode to, in turn, substantially prevent gas formation within the cell, which would otherwise result from decomposition of the solvent upon contact with the carbonaceous surface. Also, the additive and/or the reduced additive will likewise be substantially precluded from generating a gas upon its decomposition.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: April 4, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Eric S. Kolb, Martin Van Buren, Denis G. Fauteux
  • Patent number: 5765354
    Abstract: A textile machine has a machine frame with a first and a second end. Spindles are connected to the machine frame in two parallel rows extending in the longitudinal direction. A first tangential drive belt arrangement for driving the spindles of the first row includes a first tangential drive belt and two first shafts positioned at the first and second ends and having a first pulley connected thereto. The first tangential drive belt extends between the first and second ends and is guided about the first pulleys. A second tangential drive belt arrangement for driving the spindles of the second row includes a second tangential drive belt and two second shafts, positioned at the first and second ends and having a second pulley connected thereto. The second tangential drive belt extends between the first and second ends and is guided about the second pulleys. Two drive motors are positioned at the first and second ends.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: June 16, 1998
    Assignee: Palitex Project-Company GmbH
    Inventors: Heinz Fink, Jurgen Kallmann
  • Patent number: 5592808
    Abstract: An opener device in an open-end spinning machine includes an opener roller driven by a drive disk and a drive belt. A tension roller is movable between a first position wherein it exerts a driving tension force on the drive belt, and a second position wherein the tension roller exerts a lesser tension on the drive belt so that the drive belt can be removed from the device. A braking device includes a movable actuating element and a braking belt contacting member, such as a bolt, associated with the actuating element so as to be moved thereby. The actuating element and braking belt contacting member are movable between a first position wherein the braking belt contacting member is at a distance from the drive belt and a second position wherein the braking belt contacting member comes into the contact with the drive belt forcing the belt away from the drive disk.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 14, 1997
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Armin Brunner, Erich Bock
  • Patent number: 5590514
    Abstract: A ring-spinning machine has a longitudinally extending row of spindles rotatable about parallel spaced axes on a frame, and a drive that has an endless flat belt tangentially engaging all of the spindles. A pair of deflector rollers between two of the spindles are rotatable about respective axes parallel to the respective spindle axes and spaced longitudinally apart along the belt. A drive wheel is rotatable about an axis parallel to and spaced transversely from the roller and spindle axes and the belt passes around one of the deflector rollers, around the drive wheel, and around the other of the deflector rollers. A motor rotates the drive wheel about the wheel axis.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: January 7, 1997
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Peter Mann, Thomas Benkert
  • Patent number: 5584170
    Abstract: In the case of a method for closed-loop controlling the revolutions of an open-end spinning rotor during automatic piecing, the spinning rotor is run up to its operating speed from a standstill by being coupled to a tangential drive belt, which runs at operating speed. The spinning rotor thereby passes through a suitable speed range for piecing, and is kept at this speed range for a predetermined time span by changes in the driving effect of the tangential drive belt. This occurs in that the revolutions of the spinning rotor are measured, and dependent on these readings, the revolutions are closed-loop controlled by device of reducing and increasing the driving effect, for example by device of intermittent activating of the rotor brake.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: December 17, 1996
    Assignee: Novibra GmbH
    Inventor: Gerd Stahlecker
  • Patent number: 5551222
    Abstract: A pair of tangential belts disposed for parallel movement on the left and right locations for individually driving a pair of left and right spindle trains disposed in a back-to-back relationship to each other are individually driven by means of a pair of motors at the opposite ends of a machine base, and a right take-up mechanism train is driven by a speed change gear connected to a driving pulley for a belt while a left take-up mechanism train is driven by another speed changing device connected to a turn pulley for a belt, the speed changing device and being disposed collectively at an end of the machine base.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: September 3, 1996
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Tsukasa Kawarabashi
  • Patent number: 5524426
    Abstract: Unit to bear spindles which is suitable for spinning machines, twisters and also for two-for-one twisters and comprises a support (11) including two opposite sides (13a-13b), each of which bears at least one main bearing (30) coaxial with an opposite main bearing (30), the axis of these bearings (30) being substantially at a right angle to the opposite sides (13a-13b), each bearing (30) holding a shaft (19) which bears an interposed pulley (20a) and protrudes from the respective opposite sides (13a-13b), each shaft (19) supporting a respective spindle (16), the support (11) being equipped with an at least partly removable lateral plate (12) and constituting a spindle-bearing frame (10).
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: June 11, 1996
    Assignee: SIRA SpA
    Inventor: Enzo Scaglia
  • Patent number: 5473876
    Abstract: A drive system has a fixed support, a textile spindle having a whorl and rotatable adjacent the support about a spindle axis, a continuously advancing drive belt tangentially engaging the whorl, and an elongated leaf spring extending generally parallel to the belt and having a portion fixed to the support and an outer end carrying a roller bearing toward the whorl on the belt. The spring is tensioned to press the roller against the belt and the belt against the whorl. A dimensionally stable plate extends generally parallel to the leaf spring, spaced along at least most of its length from the leaf spring. A layer of energy-absorbing material is provided between and bonded to the plate and spring along all of a region extending from the support to the roller so that as the spring and plate bend the layer is subjected to shear.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: December 12, 1995
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Peter Mann, Armin Koch, Detlef Buschluter
  • Patent number: 5400581
    Abstract: The present invention provides a process and device for the reduction of energy consumption in operating spinning elements in driving spinning rotors of open-spinning machines or the spindle drive of ring spinning machine or the roving frame. It is the object of the invention to constantly keep energy consumption in the operation of spinning element at a minimum. Contact pressure between each spinning element and the indirect driving device is adjusted as a function of the momentary difference between the rotational speed of the spinning element and of its driving device in stationary operation while rotational speeds only nominally change, so that the slippage between indirect driving device and spinning element remains constant in time.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: March 28, 1995
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventor: Wolfgang Jaeger
  • 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: 5255503
    Abstract: A frictional false twisting unit including a plurality of driven shafts, a driven pulley on one of the shafts, an externally arranged motor with a drive shaft, an endless loop toothed belt between the drive shaft and the driven pulley. The shafts are on a carriage or base plate which is moveable or swingable with respect to either the motor or a base plate on which the motor is disposed. The shaft carrying base plate or carriage is movable to slacken the toothed belt, enabling removal of the driven pulley from the toothed belt and removal of the shafts from the unit. The thread monitoring devices of the unit remain with the unit while the shafts are removed. Channels for the lateral runs of the toothed belt prevent excessive spread of the belt when it is slack and when the driven pulley is removed. A guide beneath the belt prevents the belt from moving down axially when the belt is slack and the driven pulley is removed.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: October 26, 1993
    Assignee: FAG Kugelfischer Georg Schafer KGaA
    Inventors: Wolfgang Rader, Gunther Paul
  • Patent number: 5243812
    Abstract: A yarn is fed at a piecing speed to the fiber collection surface of a spinning rotor. It is there combined with the fibers of a fiber ring and is then drawn off from the spinning rotor in the form of a continuous yarn while fibers newly fed into the spinning rotor continue to be incorporated in the yarn. The rotor speed is changed, immediately after piecing, from the piecing speed to a rotational speed which is lower than the piecing speed. The rotor speed is then increased to the production speed. In this manner, optimal conditions are achieved with respect to propagation of twist and draw-off of the piecing joint. To carry out this process, elements are provided for the reduction of the rotor speed from piecing speed to a lower value, for renewed acceleration of the rotor speed after a desired minimum value has been reached of after the passage of a predetermined period of time, as well as elements to tie the accelerating rotor speed to the desired production speed.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: September 14, 1993
    Assignee: Schubert & Salzer Maschinenfabrik AG
    Inventors: Michael Strobel, Edmund Schuller
  • Patent number: 5184452
    Abstract: In the case of a tangential-belt drive for an open-end spinning machine, having a tangential belt driving the spinning rotors of several spinning units arranged behind one another, it is provided that the spinning units each comprise a pressure roller loading the tangential belt and a rotor brake which can be jointly actuated by means of a common actuating mechanism. In addition, an actuating possibility is provided by means of which the pressure roller, for increasing the pressure force, can be increasingly pressed against the tangential belt during the run-up.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: February 9, 1993
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Dieter Gotz
  • 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: 5167115
    Abstract: An endless conveyor in a ring spinning machine comprises bobbin pegs for receiving full and empty bobbins which must assume an exact position in order in a predetermined bobbin change position of the endless conveyor to come into alignment with a spindle or bobbin support arrangement and thus ensure bobbin transfer from or to the bobbin peg. The endless conveyor is divided in the longitudinal direction into various sections which are connected by connecting links or locks of different length in such a manner that a plurality of bobbin pegs arranged on a section in the bobbin change position of the endless conveyor can be exactly aligned with the associated spinning points by inserting locks of different length or by changing the effective length of the locks at both ends.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: December 1, 1992
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Jorg Wernli, Robert Aliesch, Hans-Ulrich Vontobel, Junod Andre, Karl Rimmele
  • Patent number: 5065571
    Abstract: A tangential belt drive for a spinning or twisting machine is disclosed for a machine having spindles on both sides of the machine. The spindles are combined into several groups in the longitudinal direction of the machine. One tangential belt is assigned to a drive in each case to each group, which belt moves along both sides of the machine. It is provided that the tangential belts of adjacent groups are guided by deflecting guides such that space for the housing of machine frames is left outside the travel paths enclosed by the tangential belts.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: November 19, 1991
    Assignee: Fritz Stahlecker
    Inventor: Hans Stahlecker
  • Patent number: 4962633
    Abstract: In the case of a tangential belt drive for a plurality of spindles of a spinning or twisting machine, which are arranged in a row, it is provided that, in each case, one pressure roller is arranged in the center between two spindles and deflects the tangential belt in the direction toward these two spindles. The pressure rollers are held in such a manner that when the pressure roller is in the operative position, they can be moved toward each of the two spindles assigned to them, approximately in parallel to the direction of the course of the tangential belt.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: October 16, 1990
    Assignee: Nouibra GmbH
    Inventors: Gerd Stahlecker, Klaus Hofstetter
  • Patent number: 4947632
    Abstract: The machine comprises a series of rotatable spindles (3), each of these being associated with respectively one cap-shaped thread guide member (7) rotatable about the spindle axis. A first drive belt (5) serves for turning the spindles (3). A second belt (12) is in contact with whorls (11) on the thread guide members (7). A device exerting contact pressure (13, 14, 15) urges the second belt (12) during operation against the whorls (11) with an adjustable force so that the belt (12) exerts, by means of friction, a small braking force on the whorls (11) running faster than the belt (12). The contact pressure device (13, 14, 15) can be switched over in order to press the second belt (12) against the whorls (11) with a substantially greater force. Upon shutoff of the spinning machine, the contact pressure device (13, 14, 15) is switched over so that the decelerating second belt (12) exerts a substantially greater friction force on whorls (11) and rapidly brakes the thread guide members (7) concomitantly.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: August 14, 1990
    Inventor: Louis Vignon
  • Patent number: 4944144
    Abstract: A spindle driving device for a covering machine includes a plurality of groups of spindles. Each group of spindles includes a predetermined number of spindles and an electric motor is associated with each group. A driving pulley is removably installed on each motor and a tension pulley is associated with each group of spindles. An endless belt is stretched around the driving pulley, the spindle wharves attached to each spindle and the tension pulley in each group. The tension pulley is mounted at a central portion of an arm and the arm is supported at one end by a pivot which is connected to a slider for movement along a guide-rod for removing slackness in the endless belt. The other end of the arm is attached to an energizing member for biasing the arm in a direction for removing slackness in the endless belt.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: July 31, 1990
    Assignee: Kabushiki Kaisha Ishikawa Seisakusho, Ltd.
    Inventors: Tadao Katoh, Akira Yamagiwa, Eiichi Matsuoka
  • Patent number: 4893460
    Abstract: A belt type spindle drive apparatus for textile machines of the type having a plurality of simultaneously driven aligned spindles arranged in at least one row. An endless belt extends in driving engagement along the spindles and is driven by a plurality of belt driving devices. In one embodiment, the belt driving devices have drive rollers offset from the spindle rows and coaxial overlapping input and output rollers that guide the belt to and from the drive roller between adjacent spindles. The paths of the belt entering and leaving the drive devices are offset. When an uneven number of devices is used, a pair of canted auxiliary rollers are used to make the number of belt path offsets even. To accommodate the offset of the guide rollers, one or the other guide rollers can be canted toward the drive roller or the drive roller can be canted. Alternatively, adjacent drive devices can have the same offset relationship and the belt path can be inclined from one drive device to the other.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: January 16, 1990
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • 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: 4781015
    Abstract: The invention relates to a tangential belt drive for a plurality of similar work units of a machine for the production of twisted or twined yarn. These units are subdivided into sections each having at least approximately the same number of work units and each driven through a tangential belt by an electric motor. Thereby, the number of work units in each section is established taking into account the required power and permissible belt stretch, so that the tangential belts have a considerably reduced width and thickness, compared to the ones commonly used. Further, the guide rollers of the tangential belts of neighboring sections are corotationally connected to each other.In order to improve synchronization and power transmission between sections, the contact angle is increased at the guide rollers and the drive pulleys. This may be done through the corresponding spatial arrangement of the drive pulleys with respect to the guide rollers or through use of an intermediate belt arrangement.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: November 1, 1988
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Friedrich Dinkelmann, Ernst Halder, Norbert Stadele
  • 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: 4730448
    Abstract: The invention relates to a tangential-belt drive for a plurality of work units of the same kind, arranged at least in one row next to each other, of a machine for the production of twisted or twined yarns. The work units are divided into sections with at least approximately the same number of work units, each driven with an endless tangential belt. At least one electromotor is assigned to each section for driving the thereto pertaining tangential belt and guiding means for the tangential belt.In order to reduce the energy losses of such a tangential-belt drive, the width and thickness of the tangential belt used is considerably reduced, particularly to a width between 7 and 14 mm and a thickness between 2 and 2.7 mm. Size reduction becomes possible because the number of working units in each section is selected by considering the working capacity required by this number of work units and the acceptable belt stretch factor.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: March 15, 1988
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Horst Wolf, Ernst Halder, Norbert Stadele
  • 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: 4698959
    Abstract: A yarn twisting apparatus is disclosed wherein a single endless belt is entrained upon first and second roller means. At least one of the roller means is rotatably driven, so that the belt segments which extend between the roller means cross in opposing face-to-face relation at a location between the roller means and so as to define a twisting zone therebetween, and a running yarn is guided through the twisting zone so as to have twist imparted thereto. In a preferred embodiment, one of the roller means comprises a pair of individual rollers which are selectively movable to permit adjustment of their lateral separation, and which in turn permits adjustment of the crossing angle of the belt segments and thus the amount of twist imparted to the running yarn.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: October 13, 1987
    Assignee: Barmag AG
    Inventors: Heinz Schippers, Peter Dammann
  • Patent number: 4691508
    Abstract: A machine for spinning or twisting yarn comprises a plurality of similar operating units, groups of which are each drivable by a tangential drive belt and a drive having a motor. Each of the tangential drive belts is connected with a drive belt performance observation mechanism, which shuts off the spinning or twisting machine, when the machine senses a deviation from the normal operation of the drive belt. The drive belt performance observation mechanism may also transmit the signal it produces either to a display device or to a sound producing device, so that the machine operator can take further action.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: September 8, 1987
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4662165
    Abstract: A braking device for spindles of textile machines, in which the spindle is caused to rotate by an endless drive belt; the braking device comprises a pivotable brake supporting member provided with a braking pad and a belt-disengaging idle roller. The brake support member is pivotable between a first operative position in which the braking pad and the roller are disengaged from the spindle and respectively from the drive belt, and a second operative position in which the idle roller disengages the belt from the spindle and the braking pad is pressed against the belt-pulley of the spindle; spring means act to maintain the brake support member in both operative positions.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: May 5, 1987
    Inventor: Carlo Menegatto
  • Patent number: 4662166
    Abstract: Disclosed is a drive apparatus for a device for applying paraffin wax to yarn. In the device, a solid block of paraffin is mounted on a polyhedral bolt which is driven by a whorl or drive pulley. The whorl, in turn, is driven by a continuous drive belt. Advantageously, a plurality of similar devices are mounted on the same open-end spinning machine so adjacent devices may be driven from the same drive belt. Bracing elements hold the yarn against the rotating face of the paraffin block of each device to ensure uniform application of paraffin.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: May 5, 1987
    Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft
    Inventors: Rudolf Oexler, Willi Hackenberg
  • Patent number: 4660373
    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.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: April 28, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Josef Derichs
  • Patent number: 4660372
    Abstract: An apparatus is disclosed for driving a pair of friction rollers arranged adjacent one another forming a wedge-shaped yarn-forming gap. A common drive belt is run along the surfaces of both rollers and the shaft of an electric motor. The motor is displaceably mounted in a guide which maintains the motor shaft in an essentially parallel relation to the friction roller shafts. The motor shaft can thereby be displaced for the purpose of increasing or decreasing the tension of the drive belt.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: April 28, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • 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: 4635431
    Abstract: On a ring spinning or twisting machine which comprises a row of spindles on each of the two longitudinal sides of the machine, these spindles being drivable in common by a single tangential belt, at least one driven tangential belt drive roller is mounted in each longitudinal end region of the machine and at least at one other place therebetween. The other place is at the region of the substantially straight path of the tangential belt and has no looping, or only slight looping. The energy transmission is effected by pressing or gently looping the tangential belt against a friction drive roller by means of a pressing roller. The pressing roller may consist of the whorl of an operating unit of the machine. A back pressure roller may be associated therewith in order to ease its mounting.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: January 13, 1987
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4627228
    Abstract: A textile machine has a spinning frame whose working elements, such as spindles, for respective whorls tangentially driven by a common belt. In order to allow energy efficient start-up of the individual whorls while the remaining whorls continue to be driven by the belt and without effecting the remaining whorls, the individual working element or spindles and their whorls are provided with a pivot pressing roller carrier whose pressing roller can hold the belt with normal pressing pressure at operating speed, can relieve the pressing pressure for braking of the individual whorl, and can press the belt with increased force against the individual whorl by manual operation of a lever individual to each mechanism for start-up.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: December 9, 1986
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4612761
    Abstract: A drive system drives a plurality of whorls rotatable about respective whorl axes and having radially outwardly directed faces centered on the respective axes, forming a discontinuous whorl surface, and of a predetermined whorl width measured parallel to the respective axes. The system has an endless flat drive belt extending past the whorls generally perpendicular to their axes and having a first belt surface radially directly confronting the whorl surface and of a predetermined axial belt width measured parallel to the axes and pusher rollers bearing radially inward against the belt and urging the belt surface toward the whorl surface. A ridge is formed on one of the surfaces, radially engages the other surface, holds the rest of the other surface out of contact with the one surface except at the ridge, and is of a predetermined ridge width in contact with the other surface and measured parallel to the axes equal to at most one-third of the belt width.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: September 23, 1986
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4612760
    Abstract: A spinning or twisting machine has a plurality of spindles which are rotatable about upright axes aligned in a row and which are each provided with a whorl tangentially engaged by the outer face of a straight stretch of a flat drive belt. This machine is driven by a system comprising a motor having an output pulley rotatable about an upright axis adjacent the flat drive belt, a drive wheel operatively tangentially engaging one face of the flat drive belt at a drive location, and another belt reeved over the output pulley and drive wheel and driving the latter from the former. A pinch roller is operatively engageable with the other face of the flat belt at the drive location and is pressed thereagainst to pinch the flat belt between the pinch roller and the drive wheel.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: September 23, 1986
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Horst Wolf, Friedrich Dinkelmann
  • 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: 4566265
    Abstract: Apparatus for twisting a running yarn in a textile machine comprises first and second pulleys mounted for rotation about parallel axes and an endless belt passing around their aligned peripheries so as to provide two runs each of which is twisted through 180.degree. and crosses the other run to form a nip region therewith through which the yarn is guided by yarn guides. One pulley, which may be of larger diameter than the other driven pulley, is mounted on a pivoted arm to tension the belt and/or allow for the use of differing sized belts or differing sized pulleys to alter the crossing angle of the belt and the twist level applied to the yarn.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: January 28, 1986
    Assignee: Rieter-Scragg Limited
    Inventor: Geoffrey Naylor
  • Patent number: 4559775
    Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of rotating circular discs having cooperating friction surfaces for engaging a running yarn at a twisting zone. A pressure applying member is positioned to apply a biasing force to the rear surface of one of the discs locally at the twisting zone, and the pressure applying member comprises a receptacle slideably mounting a piston which extends from the end of the receptacle to engage the disc. The receptacle is eccentrically mounted to permit selective positioning of the biasing force with respect to the yarn path of travel. The discs are mounted on pivotal rocking arms whereby the ratio of yarn twist to yarn speed may be adjusted, and an eccentrically mounted pin provides closely controlled adjustability for the arms and thus the twist ratio.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: December 24, 1985
    Assignee: Barmag Barmer Maschinenfabrik AG
    Inventor: Detlev Oberstrass
  • Patent number: 4548028
    Abstract: The invention relates to a bearing housing for driven and air-suspended spinning rings on ring-spinning and ring-twisting machines, whereby a tape drive with tensioning pulleys is provided for the spinning rings. The object of the invention is to decrease the amount of material and working time when the bearing housings are attached (applied) to the ring rail and to shorten the time required for the adjustment of the spinning rings and of the tensioning pulleys. The technical task which is being solved by the invention is constituted by the fact that the number of fastening elements needed for the attachment of the bearing housings to the ring rail is decreased and that the spinning rings are not individually adjusted and that the tensioning pulleys are not adjusted at all. According to the invention, this is accomplished by having at least two spinning rings (2;3) and one tensioning pulley (5) arranged on one bearing housing (1).
    Type: Grant
    Filed: March 22, 1983
    Date of Patent: October 22, 1985
    Assignee: VEB Kombinat Textima
    Inventors: Gunter Rebske, Manfred Voigt
  • Patent number: 4545192
    Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of rotating circular discs having cooperating friction surfaces for engaging a running yarn at a twisting zone. The drive system for the discs includes a drive component which includes a drive whorl and a coaxial drive pulley, and which is adapted to engage two separate drive belts. The drive component includes a unitary tubular drive member, a central shaft extending through and fixed to the drive member, a sleeve mounted to the frame of the apparatus and extending between the shaft and drive member, and bearings positioned between the shaft and sleeve. Also, the drive component is mounted to the frame by an arrangement which permits adjustment of the rotational axis of the drive whorl about a second axis which perpendicularly intersects the rotational axis, so as to permit accurate alignment of the rotational axis of the whorl along a direction perpendicular to the running direction of the tangential drive belt.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: October 8, 1985
    Assignee: Barmag Barmer Maschinenfabrik AG
    Inventor: Detlev Oberstrass
  • Patent number: 4541232
    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.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: September 17, 1985
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4522021
    Abstract: A series of spindles is supported on a rail. A spindle brake is provided acting on a selected one of a pair of spindles which are driven to rotate by a belt. The spindle brake is supported on a holder. The holder is pivoted to the rail. A pair of levers pivotally attached to the holder are respectively pulled for pivoting the holder in one and the opposite directions. A brake element is supported to the holder. The brake element includes a brake surface. Pivoting of the holder pivots the brake element to bring the brake surface into braking engagement with the respective spindle. A belt lift-off roller is pivotally supported to the holder on an axis spaced from the holder axis and is so shaped and placed that pivoting of the holder to brake a particular spindle moves the belt lift-off roller to lift the belt off that particular spindle.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: June 11, 1985
    Assignee: FAG Kugelfischer Georg Schafer, Kommanditgesellschaft auf Aktien
    Inventor: Gunther Schmitt
  • Patent number: 4516396
    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.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: May 14, 1985
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Raasch
  • Patent number: 4430850
    Abstract: A row of spindles carried on a common rail have whorls in tangential contact with a driving belt urged toward the spindle axes by pressure rollers offset therefrom, the whorls being of a diameter on the order of half the roller diameter. Each whorl is journaled on an upper end of an upright, stationary shaft supported by the rail through two vertically separated elastic retainers.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: February 14, 1984
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Wolfgang Igel, Frieder Probst, Gerhard Haussmann, Max Hartmannsgruber