Patents by Inventor Fritz Stahlecker

Fritz Stahlecker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fiber supply arrangement for open-end rotor spinning
    Patent number: 5065572
    Abstract: In an arrangement for open-end rotor spinning having a fiber feeding duct starting at a feeding and opening device and tapering in the direction of the spinning rotor, it is provided that at least one bypass opening in the fiber feeding duct is provided at a point which has a larger cross-section than the mouth of the fiber feeding duct, and in that the fiber feeding duct has a deflection in front of the bypass opening by which the fibers are guided past the bypass opening.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: November 19, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Arrangement for producing packages used as feeding packages for twisting
    Patent number: 5044150
    Abstract: In an arrangement for producing packages, which are used as feeding packages for twisting, it is provided that, directly in front of a cross-winding device of a wind-up device, a processing device is arranged which is controlled by yarn detectors. The yarn detectors monitor one yarn resepctively, which together form a double yarn, which is wound on the package. A yarn separating device or a device for connecting the two yarns is used as the processing device.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: September 3, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Bearing for an open-end spinning rotor
    Patent number: 5030019
    Abstract: In the case of a bearing for an open-end spinning rotor, the shaft of which is radially disposed by means of supporting disks and axially, with its end, is supported at a ball, it is provided that the ball is suppported by means of an abutment which has finger-type parts which are constructed such that they have natural frequencies which slightly differ from one another and permit a beat.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: July 9, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Yarn piecing arrangement for two component prestrengthened yarn spinning machine
    Patent number: 5016432
    Abstract: In a spinning machine having a plurality of spinning units, which each produce a package having a double yarn, which is used as a feeding package for twisting, and having devices for carrying out the piecing, it is provided that a suction gripper is constructed such that it can simultaneously take in two yarns from false twisting elements, which are arranged at a distance from one another.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: May 21, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • High-draft drafting unit
    Patent number: 5014398
    Abstract: In a high-draft drafting unit for a spinning machine having several drafting zones which are each delimited by pairs of rollers, it is provided that the working width of the pairs of rollers in the travel direction of the silver is reduced in one or several steps.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: May 14, 1991
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Drafting unit with detachably mounted support components for bottom rollers
    Patent number: 5012557
    Abstract: A drafting unit for a spinning machine has several stub shaft supported bottom rollers which are each assigned to a spinning point and which are in driving connection with drive shafts extending through in longitudinal direction of the machine. To facilitate servicing operations, the bottom rollers are held by means of support components which are detachably mounted at a machine frame which accommodates the drive shafts.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: May 7, 1991
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Spinning machine having several spinning points
    Patent number: 5010624
    Abstract: A spinning machine having several spinning points is disclosed having at least one drafting unit assigned to each spinning point. Each drafting unit has several top rollers and several drivable bottom rollers. At least the bottom rollers which are assigned to the feeding side for the fiber material are driven by a common drive shaft extending in longitudinal direction of the machine by means of transmission devices which contain a coupling. It is provided that at least the bottom rollers assigned to the feeding side are arranged adjustably for the adjusting of the distance with respect to the respective rollers which follow while maintaining a driving connection between the common drive shaft and the respective ones of said bottom rollers.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: April 30, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Process and an arrangement for producing packages
    Patent number: 5005348
    Abstract: In the case of a process for producing packages used as feeding packages for twisting, it is provided that two prestrengthened yarn components are wound up side-by-side as a double yarn. If one yarn component breaks, the winding-up is interrupted. The unbroken yarn component is gripped and held ready at a given point so that it may be taken up for a piecing and wound off the partially wound spool, while taking along the broken yarn component from the partially wound spool.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: April 9, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Process and an arrangement for picking up a yarn end of a spool package during a piecing operation
    Patent number: 4995229
    Abstract: In a process and an arrangement for picking up a yarn end of a spool during piecing at a spinning unit which produces packages with double yarns which are used as feeding packages for a twisting operation, it is provided that, in the case of a yarn breakage, the winding-up and the spinning operation is interrupted in such a manner that the unbroken yarn of the double yarn is held in a yarn pick-up position, from which it is picked up during the piecing by means of a suction gripper which can be applied to the yarn pick-up position. After an unsuccessful piecing attempt, this suction gripper is applied to the circumference of the spool in order to still be able to take up the double yarn even then. In the event of a double yarn breakage, the suction gripper is movable to the circumference of the spool yarn seeking position, without first moving to the yarn pick-up position.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: February 26, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Spinning machine drafting unit arrangement
    Patent number: 4991263
    Abstract: In the case of a spinning machine having a plurality of drafting units, which each contain several top rollers and bottom rollers, and in which the bottom rollers are each constructed as roller sections which can be individually separated form a central drive, it is provided that the bottom rollers are constructed as hollow cylinders which are disposed on stationary shafts.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: February 12, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Drafting unit for a spinning machine with movable cover
    Patent number: 4985967
    Abstract: In the case of a drafting unit for a spinning machine, a loading support is provided which has two arms extending in parallel with respect to one another at a distance which accommodate the holding devices for the shafts of the pressure roller twins and which are reinforced to form a frame by means of cross-struts. In addition, a cover is provided which covers the loading support and the pressure rollers and which can be swiveled away without interrupting the spinning operation.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: January 22, 1991
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Sliver connecting arrangement for a spinning machine
    Patent number: 4982563
    Abstract: In the case of a spinning machine having a plurality of spinning units which are arranged next to one another and to each of which a sliver is fed from a container, a movable servicing device is provided which contains devices for the picking-up of the starting portion of a new sliver from a readied container and for the connecting of this sliver with the end portion of the old sliver entering into the respective spinning unit.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: January 8, 1991
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Process and a machine arrangement for sliver processing
    Patent number: 4977738
    Abstract: In the case of a machine system for the processing of sliver having a first machine, which produces sliver and deposits it in containers, and having a second machine, which processes the sliver from the containers, this second machine being connected with the first machine by a conveying device for the containers, it is provided that automatically operating devices are assigned to the first machine, for the gripping of the end portion of the sliver deposited in each container and for the fixing of this end portion at a specified point of the respective container.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: December 18, 1990
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Process for producing a twisted yarn feed spool
    Patent number: 4974409
    Abstract: In the case of a process for producing a twisted yarn from slivers that are drawn to the desired size and subsequently are prestrengthened by means of pneumatic false twisting, it is provided that the fiber ends in the form of helixes are wound around the core with such a steep slope that, during the twisting, the fiber ends that were previously wound around the core are wound off the core as much as possible.
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: December 4, 1990
    Assignees: Fritz Stahlecker, Hans Stachlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Arrangement for the intermediate storage of a yarn at a spinning machine
    Patent number: 4972668
    Abstract: In an arrangement for the intermediate storing of a yarn at a spinning machine between a delivery device and a device which establishes a yarn connection during a piecing operation, a suction pipe is provided which stores the continuously supplied yarn in the form of a loop. The suction pipe is bent or curved in such a manner that it has supports for the yarn strands of the loop, these supports being separated from one another in axial direction with respect to the bending axis.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: November 27, 1990
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Drafting unit for a spinning machine
    Patent number: 4972554
    Abstract: In the case of a drafting unit for a spinning machine, it is provided that the pressure roller and the bottom roller of the pair of delivery rollers have a smaller diameter than the pressure roller and the bottom roller of the preceding pair of rollers, and in that the thickness of the covering of the pressure roller of the pair of delivery rollers amounts to at least approximately 4 mm. The bottom roller of the pair of delivery rollers has a profiling, the depth of which is no larger than 0.4 mm.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: November 27, 1990
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Drafting unit for spinning machines
    Patent number: 4972555
    Abstract: In the case of a drafting unit for spinning machines, it is provided that the bottom roller and the pressure roller of a pair of delivery rollers have smaller diameters than the preceding pair of rollers, and that the pressure roller of the pair of delivery rollers is designed to have a smaller diameter than the pertaining bottom roller.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: November 27, 1990
    Assignees: Fritz Stahlecker, Hans Stahlecker
    Inventors: Fritz Stahlecker, Hans Stahlecker
  • Sliver splicing arrangement for a spinning machine
    Patent number: 4969323
    Abstract: A spinning machine is disclosed which includes a sliver feeding device for introducing sliver into a spinning unit from a sliver container. To accommodate picking out the starting portion of a new sliver from a container and for connecting it with an end portion of the old sliver entering the spinning unit, apparatus is provided for picking up the new sliver and supporting the same in such a manner that the old sliver and the new sliver overlap one another in the area of the sliver supporting device adjacent the inlet area of the feeding device of the spinning unit.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: November 13, 1990
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Drafting unit for a spinning machine
    Patent number: 4967547
    Abstract: In the case of a drafting unit for a spinning machine having a drafting zone, which is delimited by two pairs of rollers each consisting of top rollers and bottom rollers and in which an apron guide is located, it is provided that the diameter of at least the bottom roller of the following pair of rollers is smaller than the diameter of the bottom roller of the preceding pair of rollers.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: November 6, 1990
    Assignee: Fritz and Hans Stahlecker
    Inventor: Fritz Stahlecker
  • Process and an arrangement for the piecing of a double yarn after a yarn breakage
    Patent number: 4964268
    Abstract: In a process and an arrangement for the piecing of a double yarn after a yarn breakage at a spinning unit of a spinning machine, which forms a double yarn from two prestrengthened yarns, which is wound onto a spool package, it is provided that, for a piecing, a newly spun double yarn is connected by means of splicing with an end of the double yarn withdrawn from the spool package, in which case, before the splicing, both double yarns are prestrengthened by being provided with a twist.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: October 23, 1990
    Assignee: Hans Stahlecker
    Inventor: Fritz Stahlecker