Patents Assigned to W. Schlafhorst & Co.
  • Patent number: 4712367
    Abstract: A method of forming a thread joint in an open-end spinning machine having a sliver drawing-in device for drawing in a sliver and feeding it to a fiber loosening device from which it is guided by a fiber guiding device to a fiber accumulator at which the fibers are accumulated, disentangled, imparted with a rotary motion, and thereafter engaged with an open end of a thread, and a take-up device for drawing the thread out of the fiber accumulator includes for the purpose of joining a joint, bringing a thread end which is fed back into the fiber accumulator into contact with a quantity of fibers to be joined which have been previously fed into the fiber accumulator, continuously withdrawing the thread out of the fiber accumulator and continuously feeding fibers into the accumulator, continuously measuring the quality of the joints and automatically controlling, in accordance with the quality, the quantity of fibers being joined.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: December 15, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Manfred Lassmann
  • Patent number: 4711082
    Abstract: The method for starting up a friction spinning assembly is used in a friction spinning assembly including: friction surfaces movable in opposite directions forming a spinning wedge, at least one of the friction surfaces being a perforated drum having a suction device with a suction nozzle acting on the spinning wedge by suctioning air through the wall of the at least one perforated drum; at least one suction device acting on the spinning wedge; and an automatic startup device performing a thread joining operation.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: December 8, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4702427
    Abstract: Coil producing machine with a mobile exchanging device for replacing full wound coils with empty coil cores or partly wound coils, and with a stationary loading magazine for replenishing the empty coil cores or partly wound coils required by the exchanging device, comprising a mobile coil-core carrier, and means for automatically shuttling said carrier between the exchanging device and the loading magazine.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: October 27, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4697692
    Abstract: A device for individually and sucessively advancing cops from a cop-producing machine in an orderly manner via conveyor belts to a cyclically stepwise advanceable cop conveyor having take-up mandrels thereon, comprising respective substantially vertical loading shafts located between the conveyor belts and the cop conveyor for delivering cops in upright position onto the take-up mandrels of the cop conveyor, the loading shafts being formed of sidewise deflectable wall elements, an actuating device operatively engageable with the loading shafts, respectively, for deflecting the wall elements thereof sidewise so as to permit the respective delivered cop to be father advanced by the cop conveyor, clock switching devices connected to the conveyor belts for actuating the belts to individually and successively advance the cops in the orderly manner, and a sensor for distinguishing between the absence and presence of a cop on a respective take-up mandrel of the cop conveyor and for enabling and disenabling the clock
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: October 6, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Wilhelm Kupper, Helmuth Hensen
  • Patent number: 4697310
    Abstract: A device for exchanging empty cans with cans filled with sliver at a sliver processing machine having set locations for the cans wherein a mobile transport device is automatically driven along a floorlike travel path at the machine include successively placing filled cans entrained with the transport device automatically at set locations of the machine which are unoccupied, picking up empty cans automatically with the transport device, and driving the transport device automatically back to a loading station, when the transport device is too full to pick up any more cans, so as to surrender the empty cans and pick up filled cans at the loading station preparatory to driving the transport device back to the sliver-processing machine or to another machine.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: October 6, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4696435
    Abstract: Method of avoiding the formation of irregular thread turns during the winding of a cross-wound coil driven by a drive drum formed with reversing thread grooves cooperating with a thread guide, a rotating element connectible to the cross-wound coil being braked with a varying braking force, which comprises the steps of continuously varying the peripheral velocity of the drive drum, and simultaneously braking, at least one of the cross-wound coil and the rotating element connected thereto, with a variable braking force in such manner that the peripheral velocity of the cross-wound coil remains constant within given tolerance limits.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: September 29, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Ferdinand-Josef Hermanns
  • Patent number: 4694539
    Abstract: A method of exchanging empty cans with cans filled with sliver at a spinning machine having set locations for the cans wherein a mobile transport device is automatically driven along a floorlike travel path at the spinning machine includes placing empty cans on the travel path, successively placing filled cans entrained with the transport device automatically at set locations of the machine which are unoccupied, picking up the empty cans on the travel path automatically with the transport device, and driving the transport device automatically back to a loading station, when the transport device is too full to pick up any more cans, so as to surrender the empty cans and pick up filled cans at the loading station preparatory to driving the transport device back to the spinning machine.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: September 22, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Manfred Langen
  • Patent number: 4695002
    Abstract: A driven thread storage device for compensating instantaneous differences between thread feeding and withdrawal velocities in a textile machine includes a device for axially feeding thread at a feeding location, a device for axially withdrawing thread at a withdrawal location, a stationary storage drum, a driven thread guide in the form of a rotation-symmetrical disc conducting the thread to the storage drum and producing a thread balloon at the feeding location, the disc having an edge with at least one radially open thread guide slot formed therein, and a device disposed outside the thread balloon for supporting the disc.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: September 22, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4693430
    Abstract: A winding station of an automatic winding machine, includes a holder, a movable mounting mandrel supported by the holder for receiving a tube of a feeding bobbin, a bobbin delivery slide for feeding a bobbin to the mounting mandrel, an unwinding accelerator for accelerating unwinding of a thread from the bobbin, and a captively controllable displacement apparatus associated with the holder for at least approximately parallel displacement of the mounting mandrel between a tube mounting position below the bobbin delivery slide and an unwinding position below the unwinding accelerator.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: September 15, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Dietmar Engelhardt, Hans Grecksch
  • Patent number: 4693066
    Abstract: A compressed air thread splicing device for producing a thread connection by splicing includes a splicing chamber having at least one opening formed therein through which compressed air is blown into the splicing chamber for mutually entangling, hooking, intermingling and winding fibers of threads to be spliced together in the splicing chamber, pneumatic holding devices disposed at two sides of the splicing chamber for holding ends of the threads to be prepared for splicing, each of the holding devices having a channel for receiving a thread end and a lateral opening for receiving injection air generating a holding air current, flow channels pointing in different discharge directions, and a device for alternately conducting the injection air through the flow channels to the lateral opening for determining the discharge direction of the injection air.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: September 15, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Dieter Oellers
  • Patent number: 4693070
    Abstract: An automatic thread joining apparatus for an open end spinning machine includes a device for producing a tension-proof thread connection forming a thread joint, a device for removing the thread joint, a controllable thread storage device for intermediate storage of a length of thread spun during operation of the device for producing a tension-proof thread connection, and a thread removal device associated with the thread storage device being activated upon the occurrence of an unsuccessful thread connecting operation.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: September 15, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4689946
    Abstract: Spinning device for producing a twisted thread of spinning fibers, the device having two friction elements rotatable in the same rotary direction and with mutually parallel rotational axes, and a position varying device for permitting the friction elements to be brought temporarily into another position relative to one another for cleaning purposes and including constructive members in the position varying device for assuring constant parallelism of the rotational axes.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: September 1, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Heinz-Georg Wassenhoven
  • Patent number: 4690342
    Abstract: A textile machine for producing cross-wound bobbins includes a bobbin conveyor belt disposed along the length of the textile machine for receiving and transporting finish wound bobbins away from the textile machine, a device for switching the bobbin conveyor belt on and off, and a controllable bobbin depositing device including a device for raising and lowering the bobbin depositing device and a device for temporarily storing a row of bobbins from the conveyor belt at a distance above the bobbin conveyor belt being greater than the height of the bobbins.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: September 1, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Manfred Langen
  • Patent number: 4685630
    Abstract: A method for supplying winding units of an automatic winding machine with bobbins to be unwound from a bobbin feeding device, includes requesting a bobbin from the feeding device at a given winding unit, depositing a given bobbin requested by the given winding unit at a distance from other bobbins onto a conveyor belt running along the winding units, transporting the given bobbin to the given winding unit on the conveyor belt, subsequently removing the given bobbin from the conveyor belt and conducting the given bobbin to the given winding unit with a controllable bobbin removing device of the given winding unit, and preventing bobbin removing devices of winding units other than the given winding unit from diverting the given bobbin and from conducting the given bobbin to the winding units other than the given winding unit, and a device for carrying out the method.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: August 11, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Buhren, Winfried Schumacher
  • Patent number: 4683712
    Abstract: A spinning machine for producing a thread includes a multiplicity of spinning stations at which sliver is spun into thread, each of the spinning stations including a thread-break sensor and a slubbing-stopping device connected to the sensor and released by an electrical current from the sensor for arresting the sliver after each thread break sensed by the sensor, each slubbing-stopping device including an electrical energy storage device, a charging circuit for the storage device, and a device for discharging the storage device for operating the slubbing-stopping device.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: August 4, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Erwin Peters
  • Patent number: 4682636
    Abstract: Method of producing a textile web by pneumatic weft picking includes bringing a weft thread in contact with flowing hot air during the insertion of the weft thread; and device for performing the method.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: July 28, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Josef Derichs
  • Patent number: 4681230
    Abstract: A tube transfer device for transferring usable tubes from a tube feeding device to a tube receiving device includes an elevator advancing tubes in a given transport direction from the tube feeding device to the tube receiving device is steps with pauses between the steps, the elevator having receiver elements for individual tubes, a feeler element movable back and forth transverse to the given transport direction during the pauses, the feeler element passing over usable tubes and pushing unusable tubes out of the receiver elements, and a receiver device adjacent the elevator for receiving the unusable tubes from the receiver elements.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: July 21, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Kupper
  • Patent number: 4674695
    Abstract: A thread traversing device of a cross-wound bobbin producing machine includes a belt drive having a first belt run with a first thread follower moving in a given traversing direction at a given speed and a second belt run with a second thread follower moving in a direction opposite to the given traversing direction at the given speed, the thread followers having upper ends and being spaced apart by at most twice a given traversing width, and a stationary thread guide for transferring a running thread from one of the thread followers to the other, the thread guide having a concave thread guiding contour touched by the running thread with reversing points defining a traversing path therebetween, the thread guiding contour lifting the running thread at the reversing points over the upper end of one of the thread followers so that the thread is taken along by the other of the thread followers and rides on the thread guiding contour.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: June 23, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Heinz Kamp, Rolf Becker
  • Patent number: 4672802
    Abstract: A method for starting the spinning of a thread in an OE-spinning device includes exposing a thread end to a gas current before starting spinning, subsequently conducting the thread end to a spinning element, collecting spinning fibers at the spinning element, and subsequently applying the spinning fibers to the thread end, and an apparatus for carrying out the method.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: June 16, 1987
    Assignee: W. Schlafhorst & Co.
    Inventor: Hans Raasch
  • Patent number: 4664326
    Abstract: An automatic winding machine includes: a multiplicity of winding stations; a conveyor belt guided along the winding stations for supplying individual spools in axial alignment to the winding stations in a given transport direction along a given transport plane; each of the winding stations including: a run-off position and a reserve position in which respective spools are maintained in readiness, a controllable deflector for conducting spools base-first from the conveyor belt to the reserve position, a chute for guiding spools from the reserve position to the run-off position, a spool receiving trough disposed below the given transport plane and substantially parallel to the given transport direction, a controllable thread suction device, and means for shifting the spool receiving trough from a relatively flat position to a relatively upright position in which a tip of a tube of a spool in the spool receiving trough approaches the thread suction device and the spool is aligned in the chute.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: May 12, 1987
    Assignee: W. Schlafhorst & Co.
    Inventors: Hans Grecksch, Leo Tholen