Stopping Or Starting Patents (Class 57/78)
  • Patent number: 8931249
    Abstract: A method interrupts yarn production on a spinning machine having at least one spinning point having an inlet for a fiber material and an outlet for the yarn made from the fiber material, and wherein the spinning machine comprises a delivery device for feeding the fiber material into the spinning point, a take-off device for drawing off the yarn out of the spinning point, a winding device for winding up the produced yarn, and a yarn monitoring unit for monitoring at least one yarn parameter. Yarn production is interrupted upon detecting a defined deviation of the monitored yarn parameter from a target value, upon changing bobbins at the winding device, and/or prior to switching off the spinning machine.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 13, 2015
    Assignee: Rieter Ingolstadt GmbH
    Inventors: Adalbert Stephan, Gernot Schäffler, Evzen Pilar, Martin Novak, Vítezslav Kubes, Josef Ludvícek, Vladimir Krycner
  • Patent number: 8919091
    Abstract: A method is provided for interrupting yarn production on a spinning machine upon detecting a defined deviation of a monitored yarn parameter from a target value, upon changing bobbins at a winding device, and/or prior to switching off the spinning machine. The feed speeds of the delivery device, the take-off device, and the winding device are gradually reduced to a stop in order to interrupt the yarn production, wherein the reducing takes place such that an end of the produced yarn is located within the spinning point after the reducing is completed.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 30, 2014
    Assignee: Rieter Ingolstadt GmbH
    Inventors: Adalbert Stephan, Gernot Schäffler, Evzen Pilar, Martin Novak, Vítezslav Kubes, Josef Ludvícek, Vladimir Krycner
  • Patent number: 8726624
    Abstract: The method and corresponding device of yarn braking are provided by means of an attending device provided with a vacuum tube into which the end of the yarn is sucked in before commencement of braking. At drawing off from the vacuum tube, the yarn is braked between the braking surfaces of a stationary brake friction member and a moving brake friction member, which are arranged on the attending device displaceably to the track of the yarn. For generating the braking force, the moving brake friction member moves towards the stationary brake friction member and fits against it at a contact abscissa or a contact surface.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 20, 2014
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Adalbert Stephan, Marek Burysek
  • Publication number: 20130227925
    Abstract: The inventions relates to the method of yarn braking especially at renewal of spinning in a working position of an air jet spinning machine by means of attending a device provided with a vacuum tube (2), into which before commencement of braking there is the end of the yarn (100) sucked in, which at drawing off from the vacuum tube (2) is braked between the braking surfaces of a stationary brake friction member (50) and a moving brake friction member (30), which are arranged on the attending device displaceably to the track of the yarn (100), while for generating the braking force the moving brake friction member (30) moves towards the stationary brake friction member (50) and it fits against it at a contact abscissa (301) or a contact surface (302).
    Type: Application
    Filed: November 28, 2012
    Publication date: September 5, 2013
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Adalbert Stephan, Marek Burysek
  • Publication number: 20130067879
    Abstract: A spinning machine has a spinning point, that includes a spinning device with an entry for a fibre material and an outlet for a produced yarn, as well as a feeding device for feeding the fibre material to the spinning device and a winding device for winding on the produced yarn. The spinning point includes a yarn end disposal means partly arranged between the outlet of the spinning device and the winding device, and with the aid of which an end section of the produced yarn is able to be separated from the rest of the yarn and eliminated. Furthermore, a process for removing an end section of a yarn at a spinning point of a spinning machine prior to the subsequent piecing process is proposed.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: Maschinenfabrik Rieter AG
    Inventors: Adalbert Stephan, Josef Ludvicek, Gernot Schäffler
  • Publication number: 20130067878
    Abstract: A method for interrupting yarn production on a spinning machine interrupts yarn production upon detecting a defined deviation of a monitored yarn parameter from a target value, upon changing bobbins at the winding device, and/or prior to switching off the spinning machine. Feed speeds of the delivery device, the take-off device, and the winding device are gradually reduced to a stop in order to interrupt the yarn production, wherein the reducing takes place such that the end of the produced yarn is located between the outlet of the spinning point and the winding device after the reducing is completed. The invention further relates to a spinning machine having a control and/or regulation device designed for operating the spinning machine according to the disclosed method.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: RIETER INGOLSTADT GMBH
    Inventors: Adalbert Stephan, Gernot Schäffler, Evzen Pilar, Martin Novak, Vítezslav Kubes, Josef Ludvícek, Vladimir Krycner
  • Patent number: 7341353
    Abstract: A thin rear projection television using a wide angle lens system is provided. In an embodiment, a fresnel screen is used in which there are at least two spatial zones in the screen with different properties. The at least two zones may be adapted to compensate for the variation in input angle.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 11, 2008
    Assignee: InFocus Corporation
    Inventors: Mark D. Peterson, David Glaess, Jeffrey Alan Gohman
  • Patent number: 6374588
    Abstract: It is an object of the present invention to provide a hairiness controlling device that can start, simultaneously with the start of spun yarn running, stabilizing a spun yarn run through disks. According to the present invention, a rotation speed of each disk 6 is varied depending on a running speed of a spun yarn Y run as a drive drum D rotates, thereby setting the tension of the spun yarn Y at an appropriate value when the spun yarn starts to run.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: April 23, 2002
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Fumiaki Nakaji
  • Patent number: 5964084
    Abstract: An open-end spinning device (1) has a spinning rotor (2) supported by its rotor shaft (3) in the bearing wedges (4, 4') of a supporting plate bearing (5). A rotor brake (12) arranged in the area of the supporting plate bearing (4) has brake elements (13) operable vertically downwardly on the rotor shaft (3). The brake elements (13) of the rotor brake (12) are arranged centered above the respective bearing wedges (4, 4') of the supporting plate bearing (5) and are seated in a box-like component (14) to be linearly displaced in the vertical direction (R).
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: October 12, 1999
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Heinz-Georg Wassenhoven, Bert Schlomer, Lothar Winzen
  • Patent number: 5950414
    Abstract: A rotor brake (8) has a brake element holder (22) releasably fixed in place on a jaw-like brake lever (9, 10) and a dovetailed retaining slot (26) on its end. A brake element (30), which in cross section (A) has the shape of an equilateral triangle, is held in this dovetailed retaining slot (26). The brake element (30) has three brake surfaces (31, 31', 31"), which can be used alternately.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: September 14, 1999
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Heinz-Georg Wassenhoven
  • Patent number: 5918454
    Abstract: A spinning ring structure (10) for twisting a fleece into a yarn and taking up the yarn on a bobbin (82) comprises a stationary ring (20) fixedly mounted on a ring rail (74), a rotary ring (30) disposed for rotation about its own axis inside the stationary ring (20) coaxially therewith so as to surround the bobbin (82) disposed with the stationary ring (30). A traveler (50) is put on the rotary ring (30) so as to revolve along the circumference of the rotary ring, and a brake ring (60) is mounted on the rotary ring (30) and provided with a plurality of radial vanes (68) to which air applies resistance against the turning of the brake ring.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: July 6, 1999
    Assignees: Nippo Ltd., Howa Machinery, Ltd.
    Inventors: Yutaka Tanaka, Hiroshi Enomoto, Hideyuki Goto, Yasushi Iwama
  • Patent number: 5906092
    Abstract: The object of the invention is to provide a spinning machine which the manufacturing expenses and maintenance/checkout expenses are held down and the operation of the low voltage circuits is stabilized. In a spinning machine having a spindle motor control system, each three-phase power supply line is provided with a pair of conductive contacts electrically connected to at least two phases on the way thereof, and the pair of conductive contacts are structured to be separated when inserting an insulating unit therebetween and to come in contact with each other again when pulling out the insulating unit.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: May 25, 1999
    Inventor: Motonobu Hattori
  • Patent number: 5755085
    Abstract: A portable actuator for a spindle brake associated with a textile machine includes a body, an arrangement for biasing the spindle brake operator to operate the spindle brake to halt rotation of the spindle with the biasing arrangement mounted to the body and an arrangement for retaining the actuator in an engaged operating relationship with the spindle brake operator with the retaining arrangement being mounted to the body with the entire device being selectively attachable to and detachable from the textile machine.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: May 26, 1998
    Inventor: Roger E. Insley
  • Patent number: 5619849
    Abstract: A method and apparatus for producing randomly variegated multiple strand yarn in twisting together two or more yarns at a plurality of yarn twisting stations. At each station a pneumatic twisting head is disposed in which randomly turbulent air currents are created in a chamber in the twisting head by compressed air flowing into the chamber from a manifold through bores in the twisting head, thereby randomly twisting together two or more yarns in the chamber. The yarns which have been twisted together are taken up over a plurality of traversing drums commonly mounted on a shaft which is driven by an alternating electric current motor controlled by a control device which operates to start and restart the motor on a predetermined cycle including a variation of the electrical input sufficient to result in randomly unpredictable inertia resistance of the traversing drums to rotational speed variation, thereby creating randomly unpredictable take-up of the yarns to produce non-uniform random twist in the yarns.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: April 15, 1997
    Assignee: Caress Yarns, Inc.
    Inventor: William A. McNeill
  • 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: 5572859
    Abstract: A spinning- or twisting-machine has an elongated spindle bank, a row of rotatable spindles supported on the bank, respective individual drive motors on the bank for each spindle, respective electrical control circuits connected to the respective motors and electrically energizable to power the respective motor, and a plurality of electricity-supply conductors extending along the bank past the spindles. A respective housing support part for each spindle carries the respective electrical control circuit and is provided with electrical-input contacts. A mount engaged between the housing part and the spindle bank allows movement of the housing part on the bank between a closed position in which it surrounds and protects the respective circuit and in which the contacts conductively engage the supply conductors and an open position in which it exposes the respective circuit and disengages the contacts from the supply conductors.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: November 12, 1996
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Josef Derichs, Friedrich Dinkelmann, Gunter Neuburger, Ernst Halder, Ewald Nagele
  • Patent number: 5337550
    Abstract: A method of stopping a spool which is driven by a continuously rotating spool roller on an open-end spinning machine. The spool is lifted off the spool roller and a braking roller is placed on the peripheral surface of the spool, after which the braking roller is braked to a stop. In this case, the roller is driven substantially at the peripheral speed of the spool roller before being placed on the spool. In order to perform the method, the braking roller has associated with it a braking device which is connected for control purposes to a spool-changing device. The braking device is constructed as a direct-current machine with a resetter.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: August 16, 1994
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Walter Mayer, Sebastian Brandl, Josef Neumeyer
  • 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: 5148662
    Abstract: A rotary ring for spinning including a holder having a lower end face, a ring-shaped rotary member supported rotatably by a bearing inside the holder, a braking shoe carried by a lower end of the rotary member and having an upper portion fixed to the lower end of the rotary member, the braking shoe having a lower portion for extending radially outwardly from the upper portion in a conical shape, the lower portion having an inner face and an outer face, the braking shoe being of a flexibility and shape such that when the rotary member is rotated, the lower portion of the braking shoe will extend radially outwardly to a greater degree due to centrifugal force so that the lower portion will be moved in a space beneath the lower end face of the holder and generally toward the lower end face, a substantially annularly shaped non-magnetic braking runner positioned to be in contact with the outer face of the lower portion of the braking shoe, the non-magnetic braking runner being mounted so as to be carried by the o
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: September 22, 1992
    Assignees: Hiroshi Yamaguchi, Hiroshi Kimura
    Inventor: Hiroshi Yamaguchi
  • Patent number: 4961308
    Abstract: In the case of a process for stopping and restarting a machine for pneumatic false-twist spinning, it is provided that the start-up time and the slow-down time of the main motor are controlled to preselected values, so that the switching-on and switching-off operations for air nozzles may take place as a corresponding function.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: October 9, 1990
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Hans Braxmeier
  • 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: 4884394
    Abstract: A friction spinning unit of a multi-position friction spinning machine includes a pressure tapping in the suction line to a suction port in the fibre feed duct. A suction transducer responsive to the suction in the tapping controls the fibre feed clutch of that particular friction spinning unit for disengaging the friction spinning unit when suction value sensed by the transducer deviates from a predetermined range of acceptable suction values, to shut-down the friction spinning unit well before the yarn quality has been impaired to a sufficient extent to cause a yarn break.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: December 5, 1989
    Assignee: Hollingsworth U.K. Ltd.
    Inventors: John G. Campbell, Allan Thompson
  • Patent number: 4817371
    Abstract: To decrease the time required for spindles of a spinning machine to reach their normal operating speeds after a yarn breakage or the like, where the spindles are individually driven by respective asynchronous motors individual to the spindles, the alternating current source whose frequency defines the speed of the motor is temporarily brought to a voltage above the normal operating voltage and the voltage step-up is then terminated.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: April 4, 1989
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4809491
    Abstract: A traveler for spinning rings, twisting rings and the like includes a plastic part with a given mass and a metal part having at most the given mass. The metal part is disposed on the plastic part at a point facing away from the axis of the ring.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: March 7, 1989
    Assignee: Reiners & Furst and Zinzer
    Inventors: Helmut Heinen, Burkhard Nimke, Helmut Nickolay
  • Patent number: 4694643
    Abstract: For compensation of changes in rotational speeds, for example, occurring because of varying loads on the motors, the drive mechanisms for at least two kinds of working units have a common synchronizing mechanism and are connected operably by a torque transfer device. The torque transfer device comprises, for example, a drive belt and two drive pulleys, each of which is attached to a different drive mechanism. The common synchronizing mechanism can comprise either a common rotational speed control or an adjustable current supply for the motors of the drive mechanisms.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: September 22, 1987
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • 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: 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: 4656822
    Abstract: A spinning machine for the production of yarn in which at each spinning station, a yarn break sensor is provided in conjunction with a sliver-stopping unit. The latter is electrically actuated and to reduce peak current draw upon simultaneous thread breaks, a time-delay circuit, e.g. using shift registers, is provided to time-stagger the operation of the stopping units.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: April 14, 1987
    Assignee: Zinser Textilmaschinen GmbH
    Inventors: Werner Meissner, Richard Schollhammer
  • 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: 4611462
    Abstract: An open-end spinning machine is disclosed having a piecing ability employing both a yarn reserve-forming member as well as reverse rotation of the yarn withdrawal rollers and of the package drive roll to pay out yarn from the package during formation of the yarn reserve, during the start-up cycle. This permits rapid dispensing of the yarn reserve on piecing, while allowing the reserve to be formed at a controlled rate before start-up and thereby minimizing the load on any auxiliary power source taking over in the event of shut-down of a multi-station spinning machine on power failure.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: September 16, 1986
    Assignee: 501 Hollingsworth (UK) Limited
    Inventors: Vernon G. Pinner, John Richardson
  • Patent number: 4571933
    Abstract: In an open-end friction spinning machine having a plurality of spinning units, each containing two friction rollers that are arranged next to one another, form a wedge-shaped gap and are drivable in the same rotational direction by means of a belt drive, a common belt drive is employed. Each spinning unit is equipped with an automatic disengaging device for disengaging the belt drive of that unit. This disengaging device contains at least one spring-loaded tension pulley holding the belt drive in the driving position. The operational position of the tension pulley is secured by means of a locking device, and the tension pulley is automatically disengaged from the drive belt when the locking device is opened.
    Type: Grant
    Filed: October 23, 1984
    Date of Patent: February 25, 1986
    Assignee: Hans and Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 4495758
    Abstract: A wrapped yarn forming apparatus is disclosed, which is adapted to form a wrapped yarn composed of a core strand, such as a yarn sliver, and a binder strand which is spirally wrapped about the core strand. The apparatus includes a hollow spindle adapted to coaxially mount a supply package of the binder strand, yarn feed means for advancing the core strand through the spindle, and yarn take-up means for winding the resulting wrapped yarn into a package. In the event of yarn breakage, means are provided for interrupting the drives of the various components, and also for terminating the continued withdrawal of the binder strand from its supply package and the continued wind-up of such strand on the take-up package, which would normally occur where only the core strand is broken. Thus piece-up of the apparatus is facilitated by avoiding the necessity of removing the wound binder strand from the take-up package.
    Type: Grant
    Filed: May 3, 1983
    Date of Patent: January 29, 1985
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Braxmeier
  • Patent number: 4409785
    Abstract: The slack of a rove is actually developed by a time difference between the time point at which the rove is supplied simultaneously with the pushing down of a start button of a flyer frame, and the time point at which the winding of the rove commences after the presser has been pressed against the bobbin. The removing of the rove slack must be performed before the flyer frame attains its normal high speed operation. On the basis of this knowledge, the method according to this invention includes operating the flyer frame at a relatively low speed for a predetermined time period before the flyer frame is rotated at its normal high speed. During this time period, any slack of the rove can be removed.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: October 18, 1983
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Katsumi Nakane, Hideo Hirano
  • Patent number: 4392340
    Abstract: In a textile machine two primary yarns are fed under relatively low longitudinal tension from respective yarn supplies to a combining location at which they are combined into a single yarn. The combined yarns are fed from this location under relatively high longitudinal tension to a takeup station where they are wound up on a spool. The tension in the combined yarns is continuously monitored between the combining location and the takeup station and an output is generated when this tension drops from the high tension below a predetermined level at least equal to the relatively low tensions in the individual yarns. This occurs when one of the yarns breaks. The yarn feeds are interrupted when the output is generated to prevent forming an inadequately plied yarn.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: July 12, 1983
    Assignee: Volkmann GmbH & Co.
    Inventors: Aloys Horstmann, Heinz Eckholt, Reinhard Veltel
  • Patent number: 4389837
    Abstract: The invention involves a ply or wrapped yarn spinning assembly of the type having a drawing unit supplying a sliver through one or more hollow spindles, at which hollow spindles a binding thread is wrapped spirally around the sliver to form yarn. Yarn condition monitors detect the yarn condition and the supply of binding thread. In the event of a malfunction, including exhaustion of binding thread at a hollow spindle, the monitors automatically disengage the supply of sliver by pivoting open a load bearing member of the drawing unit. In preferred embodiments the monitors also actuate mechanical actuators for pivoting driving or driven rollers of the hollow spindles, yarn take-off rolls, and a yarn windup device of the spinning assembly. An auxiliary thread bobbin and associated cutter mechanisms are also provided to facilitate restarting after a malfunction and shutdown.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: June 28, 1983
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Hans Stahlecker, Hans Braxmeier
  • Patent number: 4388801
    Abstract: A process and apparatus for producing a twisted elastic thread in which an elastomeric thread of substantially 154 dtex to 310 dtex, is adhesively twisted with two yarns. The thickness of each of the two yarns is substantially of 100 to 12,500 dtex, and the yarns preferably are OE yarns of polyvinyl chloride, polyvinyl cyanide, polyacrylonitrile and/or wool threads, preferably produced by the rotor process. Prior to twisting, the yarns are surface-swelled under a vacuum between substantialy 0.1 and 0.2 bar in superheated steam at substantially 70.degree. C. for up to ten minutes for loosening purposes. During twisting, a pre-tension is imparted to the elastomeric thread with respect to the yarns. Such pre-tension is imparted to the elastomeric thread only a predetermined time after starting the twister, and the elastomeric thread is pre-tensioned by substantially 2 to substantially 5 times compared with the yarns.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: June 21, 1983
    Assignee: Krall & Roth, Weberei GmbH & Co., K.G.
    Inventor: Gunter d'Alquen
  • Patent number: 4375149
    Abstract: A textile machine such as a spinning machine has, for each spindle, a comparator which senses the voltage at a motor driving said spindle and compares it with a reference voltage. Upon the comparator sensing such a change in the motor voltage as would be consistent with breakage of the material being worked on the machine (e.g. a roving passing towards the spindle and being spun into a thread), it operates a switch which serves both to switch off the motor driving the spindle and to arrest the material passing to the spindle.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: March 1, 1983
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Max Hartmannsgruber
  • Patent number: 4359858
    Abstract: A yarn-body core is supported by an upright spindle adjacent a vertically displaceable yarn guide through which a yarn to be wound passes to the core. The core and spindle are rotated and simultaneously the guide is displaced upwardly along the core to wind the yarn on the core until an instant when a yarn package having a predetermined size is formed on the core. Thereafter the guide is lowered to a level below the core while the spindle continues to rotate to wind several turns of the yarn on the spindle below the core. The rotation rate of the spindle and the core is decreased to a relatively low level prior to the instant when the yarn package is completely formed and thereafter this rotation rate is decreased to a standstill in accordance with a predetermined program starting at the instant the yarn package is fully formed and ending when several turns have been wounded on the spindle.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: November 23, 1982
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Horst Wolf
  • Patent number: 4338777
    Abstract: When an open end spinning machine is stopped, a fiber supply to a spinning rotor is first stopped and thereafter, substantially simultaneously with stoppage of both a yarn take-up roller and a yarn winding roller, a yarn end is held by a yarn holding device at a time when it still remains in a region which undergoes the suction effect of a subatmospheric pressure produced in the spinning rotor. The spinning rotor is subsequently stopped. On starting, the holding of the yarn end by the yarn holding device continues even after restarting of the spinning machine until the subatmospheric pressure produced in the spinning rotor reaches substantially the same value as that produced during a normal spinning operation. Therefore, there is prevented any snarling phenomenon, resulting in a greatly increased success rate in the operation of connecting yarn ends on re-starting of the spinning machine.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: July 13, 1982
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Osamu Suzuki, Toshio Yoshizawa, Yoshiaki Yoshida, Keiji Onoue, Kazuo Seiki
  • Patent number: 4319450
    Abstract: The individual spinning rings of a ring-spinning or yarn-doubling machine frame, which are supported via a pneumatic cushion upon the respective ring holder and upon which a traveler is adapted to orbit, have compressed air introduced initially to support the rings. The compressed-air injection is interrupted when the rings reach a rotational speed enabling them to draw in the air for the cushion (self-sustaining airborne support cushion). Manually operated valves individual to each ring are in respective branch ducts and are provided for individual startup while a central control is provided for all of the rings.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: March 16, 1982
    Assignee: Zinser Textilmaschinen GmbH
    Inventor: Wolfgang Igel
  • Patent number: 4288975
    Abstract: According to this invention, a spinning rotor is increased in speed until it reaches a predetermined higher speed beyond a lower speed region and then decreased in speed until it falls within the lower speed region, in which a yarn ending is effected. Thereafter, the speed of the spinning rotor is increased to a normal spinning speed beyond the predetermined higher speed. During rotation of the spinning rotor at the predetermined higher speed, sufficient subatmospheric pressure is produced in the spinning rotor to stretch out the yarn end thereby to prevent the yarn end from being snarled. Also, during this higher speed rotation of the spinning rotor, sufficient fibers in the spinning rotor can be collected in a maximum diameter portion in the spinning rotor to be connected with the snarl-free yarn end in a favorable condition.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: September 15, 1981
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Yoshiaki Yoshida, Osamu Suzuki, Keiji Onoue, Kazuo Seiki
  • Patent number: 4270340
    Abstract: An air-bearing supported, freely rotated spinning or twisting ring carrying a yarn traveler having radical and cylindrical air-bearings and an annular plenum cavity in at least one of the cylindrical air-bearing surfaces for generally open, unencumbered and continuous admission of pressurized air to the air-bearings. The air-bearings communicate through an annularly disposed mutually connecting enlarged air space. Time delay means is provided for reducing the air supply to the air-bearings at a selected predetermined time after de-energizing the power drive of the apparatus.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: June 2, 1981
    Assignee: Spin-O-Magic, Inc.
    Inventors: Joe B. Baucom, James E. Donnelly
  • Patent number: 4266397
    Abstract: On a ring spinning or twisting frame having winding units with rotatable thread follower rings, the difference in the speed of rotation between the ring and its follower during the restarting of the winding unit, after repair of a thread break, is maintained within acceptable limits while the frame continues to run at its high operational speed, by controlling the rotational speed of either the ring or the spindle, the speed of the controlled element being varied either continuously, or in one or more steps during the restarting operation.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: May 12, 1981
    Assignee: Zinser Textilmaschinen
    Inventors: Atilla Donmez, Wolfgang Igel
  • Patent number: 4265081
    Abstract: A yarn spinning and twisting machine which includes a drive transmission from a drive source to a plurality of spinning rings carried by vertically movable platforms and having a control for delaying the starting of the drive transmitted to the spinning rings at the start-up of the machine and for disestablishing the drive to the spinning rings before the end of the last cycle of the machine to maintain the yarn in taut condition and minimize breakage of the yarn.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: May 5, 1981
    Assignee: Spurmach Espana S. L.
    Inventor: Rufino Creus
  • Patent number: 4172357
    Abstract: A process and apparatus for piecing a yarn on spinning assemblies of an open end spinning machine is provided. A prepared yarn end is pieced to a sliver ring produced in a spinning rotor during running up of the spinning rotor from a predetermined slower speed toward its operational normal spinning speed. In order to accommodate application of the yarn end to the sliver ring, the formation of the sliver ring, and the drawing off of new yarn pieced together at the sliver ring, the invention provides for a control of the acceleration behavior of the spinning rotor so as to lengthen the time segment in which the piecing steps can be performed. In preferred embodiments, non-contact electromagnet or electrical eddy current braking means are provided for countering the driving torque of a common drive means for the rotors of several spinning assemblies, whereby the acceleration curve is flattened with a lengthening of the time period for existent desirable piecing speeds.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 30, 1979
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Patent number: 4163358
    Abstract: An apparatus for controlling the driving of an open-end spinning machine whereby driving members such as feed roller, winding roller and draw-off roller are operated at timings optimum for spinning conditions at the time of starting or stopping the machine. Optimum conditions are determined by the amount of yarn wound on a yarn take-up roll of the apparatus.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: August 7, 1979
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Tatuo Takeuchi, Kazuyoshi Ono, Naotake Furukawa, Katsuaki Sugiura, Osamu Suzuki, Takeshi Shimizu
  • Patent number: 4080775
    Abstract: Process and apparatus for yarn piecing in an open end spinning assembly are provided. The individual steps of the yarn piecing process are controlled by a predetermined piecing program whose start is triggered as a function of the running up of a previously braked down spinning rotor, so that a yarn carried back into the spinning rotor will be applied in the spinning rotor to a fiber ring at a time during which the spinning rotor has only reached a revolutionary speed that is below the operating revolutionary speed thereof. In order to avoid imprecisions in the piecing process caused by delays and/or differences in the running up characteristics of the individual spinning rotor, one or more predetermined spinning rotor revolutionary speeds are established, and upon reaching the same, the yarn piecing process is initiated and controlled.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: March 28, 1978
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Patent number: 4060964
    Abstract: Each station of a row on a multistation yarn texturing machine comprises a common support unit for all driven members of that station, the driven members being interconnected for synchronous operation by a transmission system which includes a coupling member such as a toothed belt, and the support unit being movable for engaging or releasing the coupling member from a single machine drive member common to all the stations of a row and preferably consisting of a shaft with toothed wheels for driving the coupling members.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: December 6, 1977
    Assignee: Ernest Scragg & Sons Limited
    Inventor: Ronald Spencer Eaves
  • Patent number: 4058966
    Abstract: Method of protecting against destruction of or damage to tangential strands and rotatable members of a textile machine having a plurality of individual work stations and operating with traveling threads, which includes monitoring with a monitoring device traveling along the textile machine the rotation of the rotatable members of the textile machine driven by the tangential strands thereof, determining non-rotation of at least one of the rotatable members or decrease of speed of rotation thereof below a given value at a given work station of the textile machine and accordingly disengaging the respective tangential strand at the given work station from frictional engagement and securing it against renewed frictional engagement; and device for carrying out the foregoing method.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: November 22, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: RE30167
    Abstract: An apparatus for start-spinning a thread is arranged movably relative to each individual spinning unit along an open-end spinning machine in order to be able to perform start-spinning operations there if required. In order to avoid having to start spinning at the generally very high operating speeds of the spinning rotors, because the start-spinning operation would be made more difficult by these high speeds, in accordance with the invention the spinning rotor runs up to speed from a standstill during the start-spinning operation after a brake has been released, so that spinning is started during a period in which the spinning rotor has not yet achieved its operating speed. The start-spinning speed is therefore clearly lower than the operating speed of the spinning rotor.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: December 18, 1979
    Inventors: Fritz Stahlecker, Hans Stahlecker