Patents Assigned to W. Schlafhorst and Co.
  • Patent number: 4195790
    Abstract: Method of discontinuing operation of a winding device for textile coils after a thread break wherein the winding device has a winding cylinder whereon a coil to be wound rolls around, frictionally driven by the winding cylinder and an adjustable cut-off device responsive to a predetermined coil winding fullness, which includes in response to a thread break signal, rendering the cut-off device ineffective as well as inducing subsequent lifting of the coil away from the winding cylinder, and device for carrying out the foregoing method.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: April 1, 1980
    Assignee: W. Schlafhorst & Co.
    Inventors: Franz-Josef Reiners, Wilhelm Maasen
  • Patent number: 4175711
    Abstract: Device for withdrawing and transporting a wound coil away from a winding device for textile filaments includes a traveling coil exchanging device for sequentially servicing a plurality of winding devices, the coil exchanging device including coil storage and delivery means for storing therein a coil wound by a respective winding device, the coil storage and delivery means being openable downwardly for discharging the wound coil therefrom.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: November 27, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4175718
    Abstract: Thread brake including a rotatably driven lower and upper dish, a device for applying a load with adjustable pressure to the upper dish, the device including a chamber, an elastic container of variable volume received in the chamber, and a central compressed-gas supply connected to the elastic container, the elastic container being of such size in non-pressurized condition thereof that, upon being pressurized, the elastic wall thereof is not stretched, and plunger means for transmitting the pressure from the elastic container to the upper dish, the plunger means extending through an opening formed in a wall of the chamber and having a contact surface of predetermined size directed against the elastic container.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: November 27, 1979
    Assignee: W. Schlafhorst & Co.
    Inventors: Josef Derichs, Gerhard Koslowski
  • Patent number: 4171779
    Abstract: Method of removing fully wound cheeses from a textile machine having machine units located on both sides of a symmetry plane and respectively formed of rows of work stations, which includes gripping respective fully wound cheeses by means of a coil exchanging device capable of traveling in the direction in which the symmetry plane extends, bringing the cheeses into the symmetry plane, raising the cheeses, transporting the cheeses along the symmetry plane above the work stations, and unloading them at the end of the textile machine, and device for carrying out the foregoing method.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: October 23, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4164330
    Abstract: Device for transferring to an empty coil core a thread continuously fed to the take-up coil of a rotor spinning machine, includes a thread guide traversible along a reciprocating path between the ends of a coil core for guiding a thread onto the coil core, a thread pickup assembly having means for picking up the thread under tension before transfer thereof to an empty coil core, the thread pickup assembly being pivotable from a location on the reciprocating path to one of the ends of the coil core, the thread pickup assembly includes a thread capturing device as well as a pair of thread severing devices respectively disposed in front of and behind the pickup means in travel direction of the thread, the thread severing devices being activatable in time sequence by movement of the thread pickup so that the thread severing device disposed behind the pickup means is activatable, after capture of the thread by the capturing device, in time coordination with the pickup of the thread, and the thread severing device
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: August 14, 1979
    Assignee: W. Schlafhorst & Co.
    Inventors: Wilhelm Maassen, Hans Raasch, Heinz-Georg Wassenhoven
  • Patent number: 4162723
    Abstract: Buffer storage device for transfering textile coils from an irregularly operating coil feeding device to a uniformly advancing coil delivery device having a given coil delivery velocity includes a multiplicity of identical transport elements for at least one textile coil, respectively, the transport elements being shiftable towards one another, a conveyor section extending from the coil feeding device to the coil delivery device, the transport elements being movable on the conveyor section from the coil feeding device to the coil delivery device with varying and at least two-stage travel velocity so that the travel velocity thereof at least immediately before reaching the coil delivery device, in travel direction of the transport elements, corresponds to the given coil delivery velocity and otherwise is greater than the coil delivery velocity.
    Type: Grant
    Filed: March 14, 1978
    Date of Patent: July 31, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Willi Kupper
  • Patent number: 4162012
    Abstract: Device for separating-out inadequately wound coils from coils conveyed individually and serially by an horizontal or inclined conveyor in direction of the longitudinal axis of the coils including means defining at least one coil support surface for the coils disposed at a section of the conveyor, the support surface being formed with at least one sorting opening widening in conveyance direction of the conveyor.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: July 24, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Kupper
  • Patent number: 4156341
    Abstract: Device for monitoring the feeding of a fiber sliver in a spinning machine having a device for feeding the fiber sliver thereto and a device for loosening the fibers of the sliver prior to spinning the fibers into a thread includes a device for detecting the presence and absence of the fiber sliver at a location forward of the fiber-loosening device along a path of travel of the fiber sliver from the device for feeding the fiber sliver to the device for loosening the fibers of the sliver, the fiber-loosening device having an inlet for the fiber sliver being fed thereto, and the sliver detecting device being located a distance at least equal to a staple length of the fibers of the sliver from the inlet of the fiber-loosening device.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: May 29, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4155513
    Abstract: Double-sided textile machine with cheese-winding devices including a separate, traveling automatic coil exchanger associated with each of the sides of the textile machine, a coil-core magazine entrainable by each of the coil exchangers, and a common coil-core loading station located at an end of the machine for supplying the coil-core magazines of both of the coil exchangers with coil cores.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: May 22, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Maassen
  • Patent number: 4154411
    Abstract: Method of increasing the speed at which take-up coils are exchanged at winding stations of a winding machine for textile threads which includes, prior to exchanging a take-up coil at a respective winding station, winding a few thread windings on a coil core to form a starter coil in a winding device separate from the respective winding station, exchanging a fully wound take-up coil at the respective winding station for the starter coil previously formed on the separate winding device; tying a thread end of the starter bobbin to a thread end of a supply coil fed to the respective winding station; and setting the respective winding station in operation for winding thread on the starter coil to form a fully wound take-up coil; and device for carrying out the foregoing method.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: May 15, 1979
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Kamp, Hans Raasch
  • Patent number: 4150530
    Abstract: Method of controlling thread joining in a rotor-spinning machine, which includes applying a pulse proportional to the rotary speed of the spinning machine rotor to control a measure of the material being processed in the spinning operation, and device for performing the foregoing method.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: April 24, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Josef Derichs
  • Patent number: 4150534
    Abstract: Method of exchanging sliver cans of a spinning machine having individual spinning stations, the sliver cans being disposed in staggered array adjacent and behind one another, by means of a can exchanging device able to travel on a given travel path along the spinning machine which includes placing the sliver cans in groups of at least three cans on turntables installed below the respective spinning stations of the spinning machine, conducting the can-exchanging device with at least one filled sliver can carried thereby in operating readiness past the groups of at least three cans at the respective spinning stations, stopping at a respective spinning station in response to a signal "sliver missing" from the spinning station and automatically carrying out the following operating steps:(a) turning the turntable into can-exchanging position if the turntable is not already in such position;(b) removing from the turntable the sliver can to be exchanged;(c) delivering the filled sliver can from the can exchanging de
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: April 24, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4145867
    Abstract: A device for retransporting a thread end of a take-up coil to a withdrawal tube of a spinning machine, includes a two-armed suction tube with a suction nozzle, the suction tube being pivotally mounted and being formed with a bend in a plane wherein it is pivotable, the suction tube having a longitudinally extending slot formed on the inside of the bend for passage of a thread therethrough and into the suction tube under suction, the suction tube having a suction-air flow path extending from the suction nozzle at an end of one of the suction-tube arms through the one suction-tube arm and through the other of the suction-tube arms to the end of the other suction-tube arm and therefrom through an air guidance part to a union for a negative-pressure suction source.
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: March 27, 1979
    Assignee: W. Schlafhorst and Co.
    Inventor: Heinz Kamp
  • Patent number: 4139108
    Abstract: Coil core magazine assembly for conical or cylindrical coil cores disposed mutually adjacent one another includes a coil core magazine, means for loading the magazine with coil cores, and means for removing coil cores from the magazine, the magazine having a plurality of axially parallel coil core holders disposed in a given plane and loadable with coil cores in axial direction of the coil cores, and a coil core feeding device operatively connected to the coil core holders for feeding the coil cores loaded in the coil core holders to the coil core removing means in a direction transverse to the axial direction of the coil cores.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: February 13, 1979
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Kamp, Hans Raasch
  • Patent number: 4136511
    Abstract: Method of determining incorrectly operating spinning stations of a spinning machine which includes counting with counting means for each spinning station the number of anomalous interruptions of the operation thereof, interrogating at the time intervals the count at the respective counting means with an operating device capable of traveling relatively to the spinning stations, and issuing a fault signal automatically if a predetermined count of the respective counting means for the spinning stations is reached or exceeded, and device for performing the foregoing method.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: January 30, 1979
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4133492
    Abstract: Assembly includes a closed pneumatic device for applying a load to a thread brake for braking a thread traveling therethrough, the load-applying device including means for storing pressure at a variable volume, and means operatively connected to the closed pneumatic load-applying device for determining and signaling a detrimental pneumatic leakage loss in the load-applying device.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: January 9, 1979
    Assignee: W. Schlafhorst & Co.
    Inventors: Josef Derichs, Gerhard Koslowski
  • Patent number: 4125990
    Abstract: Apparatus for accommodating changing of bobbins on open-end spinning machines. Spooling devices are provided for joining a thread reserve section and a starting winding to an empty spool tube which is to be inserted in place of a completed bobbin. The spooling devices are constructed to form a starting winding of sufficient length to form a plurality of one-time piecing operations at a spinning station. A spool transfer device is provided for transferring a prepared spool with starting winding and reserve thread section into a bobbin holder. In certain preferred embodiments the spooling device is carried on a movable unit which travels along the spinning stations and includes an auxiliary bobbin for supplying the reserve and starting winding thread section. In other preferred embodiments, the spooling device is provided separate from the movable unit along the spinning machine and includes apparatus for forming and storing a plurality of pre-prepared bobbins.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: November 21, 1978
    Assignees: Fritz Stahlecker, Hans Stahlecker, W. Schlafhorst & Co.
    Inventors: Fritz Stahlecker, Heinz Kamp, Hans Raasch
  • Patent number: 4120140
    Abstract: Method of joining a thread of a take-up coil in a spinning rotor of a spinning station of a rotor spinning machine having a normal travel course therethrough from the spinning rotor to the take-up coil for a thread that has spun therein and having a thread draw-off device and a thread guide disposed in the normal travel course, the joining being effected by means of a traveling joining device having a thread draw-off device for drawing off a thread end from the take-up coil and having a thread delivery device for transfering the drawn-off thread end to the spinning rotor of the spinning station, the method includes the steps of guiding a thread back from the take-up coil to the spinning rotor through the thread draw-off device of the joining device, that has been switched to reverse operation, and through the thread draw-off device of the spinning station that has been switched to idling operation, switching the thread draw-off device of the joining device to forward operation at an instant at which the threa
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: October 17, 1978
    Assignee: W. Schlafhorst & Co.
    Inventors: Hans Raasch, Hans Grecksch
  • Patent number: 4120462
    Abstract: Method of controlling or regulating tension in a thread being wound on a textile coil rolling on a winding roller of a thread-winding device, which includes varying the peripheral speed of the textile coil by varying the transmission ratio between the rotary speed of the winding roller and the rotary speed of the textile coil to an extent greater than the variation in the transmission ratio therebetween resulting from the increasing fullness of the winding on the coil.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: October 17, 1978
    Assignee: W. Schlafhorst & Co.
    Inventors: Hans Raasch, Hans Ludwig Neuhaus
  • Patent number: 4120526
    Abstract: Apparatus for jointly transporting wound or unwound coil cores of a textile machine having a multiplicity of work stations includes a centrally controllable beam disposed alongside the textile machine, a multiplicity of engageable and disengageable clamping elements fastened to the beam in direction of alignment thereof, the clamping elements being staggered with respect to a given mutual spacing of the work stations along the beam, each of the clamping elements being disposed so as to be effective in two opposite directions for engaging the ends of two adjacent coil cores, respectively.
    Type: Grant
    Filed: November 16, 1976
    Date of Patent: October 17, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Joachim Rohner