Patents Assigned to W. Schlafhorst and Co.
  • Patent number: 4114931
    Abstract: In a tying device for knotting together respective ends of two threads extending in opposite directions and having two tying jaws rotatable in opposite directions and disposed mutually opposing and laterally offset from one another, a cup wheel toothed at a rim thereof and meshing with drive pinions of the tying jaws, the cup wheel having entrainers disposed at varying levels for introducing and guiding the thread ends, and serving for driving the tying jaws, a longitudinally shiftable stripper for the knotted thread disposed in the center of the cup wheel, and two thread clamping devices disposed outside the cup wheel each of the thread clamping devices disposed outside the cup wheel, each of the thread clamping devices being controllable and having multiple looping clamps formed with threading contours, a device for equalizing and limiting bearing pressure at looping locations thereof, and a control device includes a pivotally mounted, controllable two-armed lever having a longer and a shorter lever arm, th
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: September 19, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Ivica Romic
  • Patent number: 4113193
    Abstract: Method of winding conical cross-wound coils at constant thread-feeding velocity, wherein varying winding speeds between the largest and smallest periphery of the coils are compensated for by filling and emptying a controlled thread storage device, which includes filling the thread storage device during a time interval wherein the thread is being guided in a three-dimensionally disposed spiral extending from a given neutral periphery of a coil to the smallest periphery thereof and back, and emptying the thread storage device during a time interval wherein the thread is being guided in a three-dimensionally disposed spiral extending from the given neutral periphery of the coil to the largest periphery thereof and back, the instantanteous length of the stored thread being varied in a wave-shaped substantially sinusoidal manner and the amplitude of the respective wave being proportional to the maximal length of the thread to be stored as required during each thread storing operation; and apparatus for performing
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: September 12, 1978
    Assignee: W. Schlafhorst & Co.
    Inventors: Hans Raasch, Lothar Muller
  • Patent number: 4103836
    Abstract: Undoing or removing thread ends of individually transported textile bobbins which are rotated during the transport about their longitudinal axis and which are blasted with compressed air during the transport from at least one blasting nozzle is effected more efficiently by moving the blasting nozzle in the direction of the longitudinal axis of the textile bobbin or the travel direction of the textile bobbin, or both, to obtain controlled intensity and time, particularly to blast certain zones of the textile bobbin longer or more intensively than others.
    Type: Grant
    Filed: June 25, 1976
    Date of Patent: August 1, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Willi Kupper
  • Patent number: 4102116
    Abstract: Method of controlling a thread-joining operation in a rotor-spinning machine having a rotor formed with a fiber-collecting channel, wherein a pulse proportional to the rotary speed of the rotor is applied to control a measure of the material being processed in the spinning operation which includes automatically controlling advance feeding into the rotor of a quantity of fiber required for thread-joining and feeding the fiber beginning with withdrawal of a thread formed for the fiber as well as returning into the rotor the thread end to be joined and withdrawing the joined thread from the rotor during start-up of the rotor, the automatic control being in accordance with a quantity proportional to the peripheral velocity of the fiber-collecting channel of the rotor serving as control input variable for at least one of the fiber feed, the thread withdrawal, the beginning of the advance feeding and the beginning of the returning of the thread end, and device for carrying out the method.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: July 25, 1978
    Assignee: W. Schlafhorst & Co.
    Inventors: Josef Derichs, Hans Raasch, Ludwig Neuhaus, Dieter Langheinrich, Helmut Schlosser, Erwin Baltsch
  • Patent number: 4102506
    Abstract: Device for controlling the contact pressure of a textile coil on a support or drive cylinder includes articulatingly suspended coil holder means for rotatably supporting the coil over the cylinder, a spring-loaded toggle-joint assembly being movable in a given plane into positions thereof wherein it is partly and fully extended, the toggle-joint assembly including a lever articulatingly connected to the coil holder means, and means for adjusting in the given plane the direction in which the toggle-joint assembly extends in the fully extended position thereof.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: July 25, 1978
    Assignee: W. Schlafhorst & Co.
    Inventors: Hans Raasch, Hans Grecksch
  • Patent number: 4089480
    Abstract: In apparatus for winding a friction-driven conical cross-wound coil, at least one first rotating member in the form of a body of rotation disposed so as to support the coil at the peripheral surface thereof from below without directly driving the coil by friction, and a second rotating member engaging the peripheral surface of the coil from below for effecting direct frictional drive of the coil.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: May 16, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4083170
    Abstract: In a rotor spinning machine having a multiplicity of spinning stations and sliver containers disposed in tandem in two rows, a device for replacing the sliver containers includes a rotary table having means for carrying four sliver containers for a respective group of four spinning stations.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: April 11, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4078737
    Abstract: A method of manufacturing textile coils having a predetermined thread length in a textile machine having a plurality of individual work stations operating at a predetermined speed, which includes establishing a given value for the working time of each individual work station from a predetermined thread length and working speed, continuously measuring the shutdown time of each individual work station, adding the shutdown time to the working time to provide a total operating time, and stopping the respective work station when the nominal value of the total operating time is reached; and apparatus for carrying out the foregoing method.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: March 14, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Winfried Rehr
  • Patent number: 4066218
    Abstract: Method of feeding unwound conical coil cores to individual winding stations of a textile machine having a coil-exchanging device servicing a plurality of the winding stations for replacing fully wound coils with unwound conical coil cores, which comprises initially telescoping unwound coil cores into sticks of cores, supplying the sticks of cores to a core magazine wherefrom the coil exchanging device successively replenishes its own supply of cores, and separating a respective individual unwound conical coil core from the supply of cores of the coil exchanging device and exchanging it for a fully wound coil at a respective winding station; and device for carrying out the foregoing method.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: January 3, 1978
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4065073
    Abstract: A creel carriage for warping creels having a plurality of spikes for receiving thereon textile coils constructed as hollow members, the spikes being constructed at the tips thereof as thread suction nozzles and being connectible to a negative pressure-generating pneumatic device.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: December 27, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Joachim Rohner
  • Patent number: 4060208
    Abstract: Method of irregularizing or disturbing the winding pattern in apparatus for winding cross-wound coils with a constant thread feeding velocity having a reciprocating thread guide which is driven for time intervals alternatingly with at least two different speeds, which includes driving a cross-wound coil in synchronism with and dependent upon the motion of the thread guide so that the quotient of the peripheral speed of the cross-wound coil and the cosine of half the thread crossing angle is constant; and device for carrying out the method.
    Type: Grant
    Filed: July 30, 1976
    Date of Patent: November 29, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • 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: 4055936
    Abstract: A method for terminating the spinning operation in a spinning machine having a loosening-up and a feeding device for slivers, includes the steps of running a sliver having a substantially full cross section with a substantially uniform count over the entire length thereof through the sliver feeding device and the fiber loosening-up device, and cleanly cutting the sliver transversely immediately upstream of the feeding device in direction of feed of the sliver; and device for performing the foregoing method.
    Type: Grant
    Filed: May 14, 1976
    Date of Patent: November 1, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4047674
    Abstract: Winding equipment for textile coils includes a device for adjusting retrograde rotary motion in a coil being frictionally driven by a winding cylinder. The device has reduction gearing, and means for inserting said reduction gearing between the winding cylinder and the coil.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: September 13, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4041684
    Abstract: Device for automatically starting or resuming operation by joining a thread for spinning in an open-end spinning machine, the device having a pivotable bent suction tube for seizing a thread end located on a take-up coil, the suction tube being formed at the inside of the bend thereof with a longitudinally extending slit for passage therethrough of a sucked-in thread, includes a pivot bearing for the pivotable suction tube, a negative pressure supply line connected to the suction tube at the pivot bearing, a transfer arm connected at one end thereof to the suction tube at the pivot bearing, and thread gripping means mounted for movement from the pivot bearing to the free end of said transfer arm for transfering a thread end from the pivot bearing to the free end of the transfer arm.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: August 16, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4033104
    Abstract: Method of replacing a sliver container in a spinning machine formed of a plurality of individual spinning stations, sliver containers being disposed in tandem in two rows by means of a transporting device carrying a limited supply of the containers and being constrained to travel on a given travel path along the spinning machine, which includes disposing at the spinning machine a respective pair of sliver containers in tandem on a carriage or slide movable transversely to the given travel path of the transporting device, loading the transporting device with filled sliver containers at one end of the spinning machine and unloading the transporting device of exchanged sliver containers at the same one end of the spinning machine or at the other end thereof, shuttling the transporting device back and forth, ready for operation past the spinning stations of the spinning machine after the transporting device has been loaded with filled sliver containers, stopping the transporting device in front of a sliver contai
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: July 5, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4028136
    Abstract: A system for cleansing spinning turbines of a spinning machine which includes driving a cleansing device having a telescoping tube assembly provided with a rotary cleansing brush at one end thereof from spinning turbine to spinning turbine located at respective spinning stations of the spinning machine, inserting the one end of the telescoping tube assembly with the rotary cleansing brush provided thereat into the respective spinning turbine, and connecting the other end of the telescoping tube assembly to a source of compressed air.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: June 7, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz Kamp
  • Patent number: 4009840
    Abstract: Blast nozzle assembly for pneumatically loosening thread ends of rotating textile coils includes a blast nozzle, means for transporting a textile coil past the blast nozzle in a given travel direction, and means mounting the nozzle for pivoting the same within a limited angular range in and opposite to the given travel direction of the textile coil.
    Type: Grant
    Filed: May 13, 1975
    Date of Patent: March 1, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Herbert Muller
  • Patent number: 4002306
    Abstract: Method of winding conical cross-wound coils at constant thread feed velocity wherein compensation is provided by a storage device for the varying winding speeds from the larger to the smaller diameters of the coils which includes setting a thread storage device in zero position thereof, wherein no thread is being stored, after alternative occurrence of a coil change and a thread break; initially holding with an auxiliary thread guide a thread that is to be wound into a coil; advancing a thread guiding member in a direction from the larger toward the smaller diameter ends of the coil and, after releasing the thread from the auxiliary thread guide, taking over the thread with the thread guiding member.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: January 11, 1977
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 3998397
    Abstract: Device for feeding cops to winding stations of a winding machine includes an endles conveyor belt traveling in axial direction past the winding stations and feeding thereto, as needed, cops carried by a forward traveling upper run of the conveyor belt, the endless conveyor belt having a reversing location beyond the last winding station of the machine, a first reversing device located between the last winding station and the reversing location of the conveyor belt, the first reversing device having means for removing from the forward traveling upper run of the endless conveyor belt cops which had not been fed to the winding stations and for depositing the cops on a returning lower run of the endless conveyor belt, and a second reversing device in vicinity of the returning lower run, the second reversing device having means for removing the cops from the returning lower run, and for transfering the cops to the forward traveling upper run of the endless conveyor belt.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: December 21, 1976
    Assignee: W. Schlafhorst & Co.
    Inventors: Egon Haberkorn, Siegfried Demandt