Patents Assigned to Fritz Stahlecker
  • Process for the stopping and restarting of an arrangement for open-end friction spinning and a device for this purpose
    Patent number: 4745737
    Abstract: A process is provided for operating open-end friction spinning machines of the type including movable friction surface parts defining a yarn forming region and a suction device for creating a suction effect on the yarn forming region. The process includes reducing the suction effect when spinning operations are interrupted, and interrupting the suction device at a point no later than the return of a yarn end into the yarn forming region. An apparatus for performing the process is also provided.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: May 24, 1988
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Wolfgang Feuchter
  • Method and apparatus for starting spinning operation of an open end friction spinning aggregate
    Patent number: 4727715
    Abstract: A piecing process is provided for an open-end friction spinning apparatus of the type including movable friction surface members forming a yarn-forming zone therebetween. A friction surface driving device for moving the friction surface members during operation and for interrupting the movement of the friction surface members is also included in the apparatus. The spinning apparatus further includes a yarn end orientation member for orienting a yarn end during the piecing process. The process includes placing a yarn end into the yarn-forming zone when the rollers are stopped. The friction surface members are started such that the yarn end is prevented from being pulled too deeply into the yarn-forming zone by the yarn end orientation device. An apparatus for carrying out this process is also provided.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: March 1, 1988
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Wolfgang Feuchter, Wolfram Ilg, Johann Weber
  • Supporting disk for a supporting-disk bearing of an open-end spinning machine
    Patent number: 4713932
    Abstract: In the case of a supporting disk for a supporting disk bearing for a shaft of an open-end spinning rotor having a disk-shaped basic body made of metal that, on its circumference, is equipped with a ring made of plastic, the outer surface of which forms a smooth, uninterrupted essentially cylindrical running surface, it is provided that the inner surface of the ring has a profiling by means of which the thickness of the ring is reduced in the central area as compared to the edge areas.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: December 22, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Werner Zott
  • Brake for an open-end spinning rotor
    Patent number: 4706450
    Abstract: In the case of a supporting roller bearing for a horizontally arranged spinning rotor, it is provided that braking means are arranged below a tangential belt moving between two pairs of supporting roller. The braking means contain two brake shoes that can be applied essentially horizontally to the shaft from the direction of two sides, said brake shoes being arranged on tong arms. The applying of the brake shoes takes place in such a way that the brake shoe that during the application moves in moving direction of the tangential belt comes to rest against the shaft before the other brake shoe. In addition, it is provided that a tension roller loading the tangential belt in normal operation, during the braking, will not be moved off the tangential belt before both brake shoes are applied to the shaft.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: November 17, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Wolfgang Feuchter, Dieter Goetz
  • Fiber feed arrangement for open-end friction spinning machines
    Patent number: 4704860
    Abstract: An arrangement for open-end friction spinning is provided having a one-piece component fiber feeding duct that is mounted at an opening roller housing. The opening roller housing is held in a stationary position by a holding means containing a snap closure and the opening roller housing together with the fiber feeding duct can be removed for the exposure of the yarn-forming zone.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: November 10, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Open-end friction spinning machine provided with devices for monitoring friction characteristics and conditioning spinning surfaces
    Patent number: 4704857
    Abstract: An open-end friction spinning machine having a plurality of adjacently arranged spinning units is provided with one or more devices for conditioning the outer cylindrical surfaces of at least one roller of a roller pair contained in each spinning unit. Additionally, the spinning units are provided with one or more devices to monitor the friction characteristics of at least one of these rollers exhibiting a closed cover surface. The conditioning device is constructed so as to be responsive to a friction characteristic monitored by the friction characteristic monitoring device.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: November 10, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Bearing and drive for a horizontally arranged open-end spinning rotor
    Patent number: 4703616
    Abstract: A bearing and driving assembly is disclosed for an open and spinning rotor unit of a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft. A tension roller is loaded against the tangential belt. To minimize failures of such a system caused by a resonant system vibrations and to facilitate high spinning speeds with minimal manufacturing expenses, the supporting disk pairs are axially spaced a distance slightly larger than the axial width of the tension roller. Brake members are disposed below the tangential belt so as to be applied with substantially horizontal movement radially against the rotor shaft.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: November 3, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Wolfgang Feuchter, Dieter Goetz, Friedbert Schmid
  • Open-end friction spinning machine
    Patent number: 4691509
    Abstract: In the case of an open-end friction spinning machine having a plurality of spinning units, measuring devices are provided for examining the quality of the moving yarn at each spinning unit. Preferably, the tension of the yarn between a withdrawal device and the yarn forming point is measured which permits the drawing of conclusions concerning the respectively existing yarn twist. When deviations from an indicated quality are determined, measures are taken so that at least one parameter of the spinning conditions at the respective spinning unit is changed for eliminating the deviations.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: September 8, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Friction roller for open-end friction spinning
    Patent number: 4677815
    Abstract: A friction roller for open end friction spinning and a method of making same are disclosed. The cover surface of the friction roller that imparts friction to fibers to form yarn in a yarn formation zone exhibits an outer surface texture which extends essentially in the longitudinal direction of the friction roller.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: July 7, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Method and apparatus for operating an open-end friction spinning machine
    Patent number: 4677819
    Abstract: A method and apparatus for operating an open-end friction spinning machine with a plurality of spinning units whereby yarn twist of yarn at the spinning units is monitored by a measuring and evaluating device. This monitored yarn twist is then compared with a predetermined desired yarn twist value. In response to deviations from the predetermined desired yarn twist, at least one parameter of spinning conditions is adjusted.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: July 7, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Suction control arrangement for open-end friction spinning
    Patent number: 4677820
    Abstract: An apparatus for open-end friction spinning is provided with at least one suction roller connected to a suction device. The suction device is connected via a valve with an underpressure or vacuum source which permits the adjustment and the switching off of the suction effect of the suction device. Adjusting elements operating independently of each other are respectively provided for switching off of the suction effect and for controlling the amount of the suction effect. These adjusting elements are operable by a moveable servicing apparatus.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: July 7, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Bearing disk construction for supporting a spinning rotor shaft of an open-end spinning machine
    Patent number: 4676673
    Abstract: A bearing disk construction is disclosed for an open end spinning rotor at a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft of the radial side thereof opposite the twin disk arrangement. The bearing disks are formed with a metallic base body and a plastic fitting around the circumference thereof which directly supportingly engages the rotor shaft. To minimize heating of the system during high speed operation, the plastic fittings are provided with a circumferential ring groove which is geometrically configured to optimize bearing support and heat dissipation. The plastic fitting is anchored in a groove at the circumference of the base body by moulding the plastic at the base body.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: June 30, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Werner Zott
  • Arrangement for open-end friction spinning
    Patent number: 4672803
    Abstract: An arrangement for open-end friction spinning with two rollers forming a wedge-shaped gap is provided for separating the two rollers from a drive during a yarn breakage. A device reduces the speed of the roller rotating into the wedge-shaped gap earlier or faster than the roller rotating out of the wedge-shaped gap. Furthermore, a device is provided for switching off the suction device holding the producing yarn within the wedge-shaped gap during a yarn break.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: June 16, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventors: Fritz Stahlecker, Wolfgang Feuchter
  • Bearing and driving arrangement for a spinning rotor of an open-end spinning machine
    Patent number: 4667464
    Abstract: A bearing and driving assembly is disclosed for an open end spinning rotor at a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft of the radial side thereof opposite the twin dusk arrangement. To minimize failures of such a system caused by resonant system vibrations and to facilitate high spinning speeds with minimal manufacturing expenses, the assembly is designed so that the system critical velocity where excessive resonant vibrations may occur is substantially lower than spinning operational speeds.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: May 26, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventors: Fritz Stahlecker, Wolfgang Feuchter, Dieter G/o/ tz, Friedbert Schmid, Werner Zott
  • Spinning machine maintenance unit with fly catching needle
    Patent number: 4662167
    Abstract: A servicing device is provided for a spinning machine which includes a plurality of spinning stations, which servicing device is moveable along the spinning stations and adjustably disposed adjacent to each. The servicing device is outfitted with at least one fly catching needle connected to a rotational drive unit. The fly catching needle is arranged at a holder which is moveably mounted and provided with a driving unit so that it is adjustable along one or several predetermined paths to predetermined parts of the spinning unit and especially plural positions of a drafting unit or frame.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: May 5, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker
  • Pneumatic yarn control arrangement for open-end friction spinning
    Patent number: 4662168
    Abstract: The invention relates to an arrangement for open-end friction spinning having two adjacently arranged rollers driven in the same rotational direction and forming a wedge-shaped gap in which the yarn formation takes place. An air supply device is provided having at least one compressed air jet extending into the plane of the wedge-shaped gap and being directed upon the yarn for purposes of favorably influencing the contact force of the yarn against the rollers, and thereby the friction effect and/or the position of the yarn. In especially preferred embodiments, a plurality of compressed air jets are disposed to blow air against the yarn at positions downstream of the fiber feed in the yarn withdrawal direction. A suction device and a further compressed air jet are provided at the side of the wedge-shaped gap opposite the fiber feed opening in certain embodiments.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: May 5, 1987
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Driving arrangement for open-end friction spinning machines
    Patent number: 4660372
    Abstract: An apparatus is disclosed for driving a pair of friction rollers arranged adjacent one another forming a wedge-shaped yarn-forming gap. A common drive belt is run along the surfaces of both rollers and the shaft of an electric motor. The motor is displaceably mounted in a guide which maintains the motor shaft in an essentially parallel relation to the friction roller shafts. The motor shaft can thereby be displaced for the purpose of increasing or decreasing the tension of the drive belt.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: April 28, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Open-end spinning machine having a plurality of spinning units and a movable servicing apparatus
    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
  • Opening roller unit for open-end spinning installations
    Patent number: RE32507
    Abstract: An opening roller unit for open-end spinning installations as a shaft supported in a bearing box and an opening roller arranged on an end of the shaft which projects from the bearing box. The opening roller extends over the bearing box in a manner forming a cavity that is sealed toward the outside with an annular sealing gap and comprises the base member and the ring detachably secured thereto which has a fitting provided on the outer periphery thereof. The detachable ring is mounted upon the base member in a manner blocking the external axis to the cavity. In accordance with one preferred embodiment, the ring of the opening roller extends over the bearing box and the cavity is defined by the ring and bearing box, while the scaling gap is provided between the ring and the bearing box in conjunction with an annular insert attached to the bearing box.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: September 22, 1987
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Friedbert Schmid, Hans Raasch
  • Mobile cleaning device for open end friction spinning machines
    Patent number: RE32670
    Abstract: An open end friction spinning machine is disclosed which includes plurality of adjacently arranged spinning units which each have a pair of friction rollers forming a yarn twisting wedge slot. To accommodate cleaning of the friction rollers a mobile servicing cart is provided which is movable longitudinally along the machine to respective servicing positions adjacent spinning units to be cleaned. The servicing cart includes cleaning elements engageable with the rollers to clean them and air suction and blowing devices to assist in the cleaning and removal of contaminants.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: May 24, 1988
    Assignees: Hans Stahlecker, Fritz Stahlecker
    Inventor: Fritz Stahlecker