Patents Assigned to W. Schlafhorst and Co.
  • Patent number: 4333201
    Abstract: Device for preventing the discharge of dust and fiber particles from textile machine work zones having running threads disposed therein, including an air screen system disposed between the work zones and the ambient air in the vicinity of the machine, the air screen system including air discharge nozzles and air suction nozzles.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: June 8, 1982
    Assignee: W. Schlafhorst & Co.
    Inventor: Joachim Rohner
  • Patent number: 4327546
    Abstract: Method and apparatus for joining a thread returned by a traveling joining device from a take-up coil to a spinner rotor of an open-end rotor spinning machine station, including a thread joining device being disposed on the joining device and being shiftable into reverse motion for returning the thread to the spinner rotor, a thread pulling device disposed on the joining device, a thread support disposed on the spinning station, a device for transferring thread after joining from the thread pulling device to the thread support, and a thread accumulator insertable into the path of the thread between the thread pulling device and the take-up coil.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: May 4, 1982
    Assignee: W. Schlafhorst & Co.
    Inventors: Josef Derichs, Hans Raasch
  • Patent number: 4324346
    Abstract: Device for the controlled transfer of a coil tube from a coil supplying device to a pickup device, including a chute and a device for applying underpressure to a large area of the long side of the coil tube to transport the coil tube through the chute.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: April 13, 1982
    Assignee: W. Schlafhorst & Co.
    Inventor: Kamp Heinz
  • Patent number: 4322943
    Abstract: Device for joining an upper thread to a lower thread by splicing, including a splicing chamber for inserting and joining the threads, a compressed air canal ending inside the splicing chamber, a thread feeder being movable from a thread receiving position to a thread surrender position for inserting the threads into the splicing chamber, thread cutting means for cutting off ends of the upper and lower threads to produce shortened thread ends, a controllable and adjustable compressed air dosing valve being connected to the compressed air canal, first pneumatic means disposed above the splicing chamber for receiving the shortened thread end of the lower thread, second pneumatic means disposed below the splicing chamber for receiving the shortened thread end of the upper thread, and suction nozzles disposed on the pneumatic means having screen-like perforated surfaces, the thread cutting means, dosing valve and pneumatic means being controllable as a function of the position of the thread feeder.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: April 6, 1982
    Assignee: W. Schlafhorst & Co.
    Inventors: Joachim Rohner, Heinz Zumfeld
  • Patent number: 4321736
    Abstract: Method for extending a warp fed to a tufting machine, which includes securing trailing thread ends of the warp to be extended with a holding device, pulling the leading thread ends of a new warp from a thread accumulator, securing the leading thread ends of the new warp with a further holding device, subsequently joining each individual thread of the warp to be extended to a thread of the new warp with a spliced joint, and cutting off and sucking away the two overhanging thread ends of the spliced joint, and an apparatus for carrying out the method.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: March 30, 1982
    Assignee: W. Schlafhorst & Co.
    Inventor: Joachim Rohner
  • Patent number: 4314439
    Abstract: Device for loading a textile machine with individual conical coil tubes, including a supply container for the individual conical coil tubes having a bottom with an opening formed therein, a chute disposed below the opening formed in the bottom of the supply container, reciprocating slider means including a transport compartment with an open top and bottom formed therein for dispensing single coil tubes through the opening formed in the bottom of the supply container into the chute, a feed station disposed below the chute for receiving unsorted conical coil tubes, means for successively slipping individual conical coil tubes onto spindles or creel mandrels of a textile machine, and controlled coil tube turning means for passing on a conical coil tube presented in unsorted condition at the feed station to the slipping on means with tips sorted.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: February 9, 1982
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Kamp, Rolf Becker, Manfred Stops
  • Patent number: 4314437
    Abstract: Splicing assembly, including a splicing device having a pneumatic thread splicer for joining an upper thread to a lower thread and a testing device for monitoring the tensile strength of the splice.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: February 9, 1982
    Assignee: W. Schlafhorst & Co.
    Inventors: Joachim Rohner, Heinz Zumfeld
  • Patent number: 4283908
    Abstract: Method and device for preparing a ring spinning frame for automatic coil changing, which includes controlling a movable automatic servicing device for the spinning operation and a movable automatic servicing device for changing coils with a central automatic spinning control which controls the spinning processes of all spinning units of the machine so that both mentioned servicing devices are placed in readiness at the machine end of the ring spinning frame when the spinning process is completed.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: August 18, 1981
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Kamp, Joachim Rohner
  • Patent number: 4276742
    Abstract: A joining device for joining a thread returned from a take-up coil to a spinning rotor of a rotor spinning machine by a thread regulator, the thread regulator having a thread clamp includes a roller pair, at least one of the rollers of the roller pair being drivable in direction in which the thread is returned.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: July 7, 1981
    Assignee: W. Schlafhorst and Co.
    Inventors: Hans Raasch, Hans Grecksch
  • Patent number: 4266734
    Abstract: A winding device for a conical cross-wound coil wherein the coil is driven by peripheral friction applied to a predetermined part of the length thereof constituting a friction zone, and the thread that is to be wound on the coil is fed thereto by a thread guiding member, means for reducing the angle at which the wound threads cross on the cross-wound coil in the friction zone with respect to the thread crossing angle outside the friction zone.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: May 12, 1981
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4241480
    Abstract: Comb section pair of an articulating expansion comb for processing textile threads or filamentary wires, including a first and a second comb section pivotally joined together at an axis of rotation in the vicinity of an end of each comb section, a group of comb needles disposed on each comb section in a respective alignment plane, each of the comb needles being mutually spaced apart by a given comb needle division, the alignment planes intersecting at the axis of rotation, the axis of rotation extending exclusively through the comb needle group of the first comb section, a last comb needle of the comb needle group on the first comb section being disposed at least one comb needle division beyond the axis of rotation toward the end of the first comb section, a first comb needle disposed closest to the end of the second comb section being at most one comb needle division farther from the axis of rotation than the last comb needle of the first comb section.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: December 30, 1980
    Assignee: W. Schlafhorst & Co.
    Inventors: Helmut Wiedenfeld, Peter Reinardy
  • Patent number: 4233810
    Abstract: Method of automatically removing a coil from a spindle of a ring spinning or twisting-frame work station which includes driving along the frame and traveling device equipped with a coil transporter; in a first operating cycle, releasing a coil core from a spindle by means of a coil-core releasing device while applying in axial direction compressive forces symetrically and over a large area upon a lower edge of the coil core; and in a second operating cycle, gripping the thus released coil by means of the coil transporter, raising the coil above the respective spindle and thereafter transporting the coil to a side of the frame and depositing the coil thereat and device for performing the method.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: November 18, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4232509
    Abstract: Method and device for joining together an upper and a lower thread, which includes moving at least one first thread feeder from a thread pick-up position to a thread transfer position, inserting the upper and the lower threads into a longitudinal slot formed in a chamber, holding the threads in the slot until compressed air is admitted to the chamber, and at given positions during the movement of the first thread feeder; closing the chamber with a lid, automatically severing the ends of the upper and lower thread and blowing compressed air into the chamber.
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: November 11, 1980
    Assignee: W. Schlafhorst & Co.
    Inventors: Joachim Rohner, Reinhard Mauries, Heinz Zumfeld
  • Patent number: 4222224
    Abstract: Device for temporarily stopping the operation of spinning stations of a spinning machine equipped with means for automatic inspection and/or cleaning of the machine after an interruption in the spinning operation at a spinning station and for thereafter restarting the operation of the respective spinning station includes a monitoring device associated with each spinning station having means for producing an intentional interruption of the spinning operation at the respective spinning station when a given value of a characteristic of the uninterrupted spinning process is reached or exceeded and only when no other spinning station serviced by the means for automatic inspection and/or cleaning of the machine is out of operation due to an interruption of the spinning operation performed thereat that requires correction.
    Type: Grant
    Filed: November 16, 1976
    Date of Patent: September 16, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4221109
    Abstract: In a thread-joining device capable of traveling from spinning station to spinning station of a spinning machine having respective means for feeding sliver thereto, a device for measuring a dimension of the sliver at the respective feeding means of the spinning stations.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: September 9, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4217749
    Abstract: Method of joining textile threads by means of an apparatus having a vortex chamber formed with an elongated slot for introducing therein threads that are to be joined, the threads being insertable into the vortex chamber adjacent one another and being held by clamping devices outside the vortex chamber, the threads being twistable together in the vortex chamber by compressed air supplied thereto and being thereby joined, which includes inserting the threads to be joined loosely and without tension into the vortex chamber so as to be looped about opposite end rims of the vortex chamber; twisting together the threads disposed loosely and without tension in the vortex chamber while they are tightly held by the clamping devices and slackening the thread tension to such an extent that a false twist imposed on the textile threads during twisting together of the threads and consequent shortening of the thread length causes the textile threads to come into contact with the end rims of the vortex chamber.
    Type: Grant
    Filed: November 14, 1978
    Date of Patent: August 19, 1980
    Assignee: W. Schlafhorst & Co.
    Inventors: Joachim Rohner, Reinhard Mauries, Heinz Zumfeld
  • Patent number: 4213290
    Abstract: Ring spinning machine includes a drawing frame having, at a given location therein, a draw-up roll for drawing therethrough in a given direction a roving being spun into a thread, and a roving-clamping device responsive to a break in the thread for clamping the roving, the roving-clamping device being controllably deflectable transversely to the given drawing direction in vicinity of the given location.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: July 22, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Kupper
  • Patent number: 4210031
    Abstract: Lifting or pressing device includes means for transmitting thrust, and a compressive force-transmitting push rod shiftable by said thrust transmitting means, the push rod being formed of individual elements form-lockingly clampable one to another, the individual elements being fittable with a pressure-proof, bending-proof and buckling-proof fit into one another in direction of thrust by the thrust transmitting means, and being releasable in a direction opposite the direction of thrust and being divertable out of the direction of thrust.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: July 1, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Reinhold Schmid
  • Patent number: 4202511
    Abstract: Thread braking device including a rotatably driven lower dish and upper dish, a device for applying a load to the upper dish, a guidance housing surrounding and guiding the upper dish, and rotary drive means for rotating the guidance housing.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: May 13, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Gerhard Koslowski
  • Patent number: 4202506
    Abstract: Device for monitoring thread travel in a winding device of a textile machine having, disposed in the travel path of the thread, a thread guiding member for a take-up coil, including a thread monitoring device disposed in the thread travel path upstream of the thread guiding member, the thread monitoring device having means for producing a noise signal when a thread is travelling along the path, a high-speed thread clamping device disposed adjacent the thread travel path, and means responsive to a discontinuance of the noise signal for actuating the high-speed thread clamping device to grip a thread present in the travel path.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: May 13, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Joachim Rohner