US3690576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile thread winder with tension compensating device
Assignee: Northrop Grumman Systems Corp
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Filing: 1971-05-03
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Granted: 1972-09-12
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Expires: 1991-05-03
Abstract
Abstract A textile thread winder with a device for compensating for variations in tension in thread being wound due to increases and decreases in the length of the path of travel of the thread from a thread source to a package roll caused by traversing action of a traversing mechanism. The textile thread winding apparatus has a driven rotating drive roll, at least one freely rotatable package roll positioned on one side of the drive roll for engagement therewith to be driven thereby for winding of thread and mounted for linear movement away from the drive roll as the thread package builds thereon, and a thread traversing mechanism positioned on the other side of the drive roll for receiving the thread from a source and guiding the thread around the drive roll to the package roll while traversing the thread longitudinally of the drive roll. Preferably, the winding apparatus includes mechanisms for maintaining a predetermined pressure relationship between the drive roll and the package roll.
Inventors
- 👤 George F Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:23
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/40; B65H54/52; B65H59/00; B65H59/005; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
254 words
The combination of: textile thread winding apparatus having a driven rotating drive roll, at least one freely rotatable package roll positioned on one side of said drive roll for engagement therewith to be driven thereby for the winding of thread and mounted for linear movement away from said drive roll as the thread package builds thereon, a thread traversing mechanism positioned on the other side of said drive roll for receiving the thread from a source and guiding the thread around said drive roll to said package roll while traversing the thread longitudinally of said drive roll, carriage means including a stationary portion and a movable portion carried by said stationary portion for reciprocating linear movement and being secured to and carrying said package roll for reciprocating linear movement therewith, and means for maintaining a desired predetermined pressure relationship between said drive roll and said package roll and for linearly driving said package roll and comprising a variable torque reversible motor, a screw shaft connected to and rotated by said torque motor and a nut secured to said movable carriage portion and receiving said screw shaft therethrough for converting rotary movement of said screw shaft into linear movement of said movable carriage portion and package roll carried thereby; and means for compensating for variations in tension in the thread being wound due to increases and decreases in the length of the path of travel of the thread from the thread source to said package roll caused by the traversing action of said traversing mechanism.
Claim 2
Dependent Claim
254 words
The combination of: textile thread winding apparatus having a driven rotating drive roll, at least one freely rotatable package roll positioned on one side of said drive roll for engagement therewith to be driven thereby for the winding of thread and mounted for linear movement away from said drive roll as the thread package builds thereon, a thread traversing mechanism positioned on the other side of said drive roll for receiving the thread from a source and guiding the thread around said drive roll to said package roll while traversing the thread longitudinally of said drive roll, carriage means including a stationary portion and a movable portion carried by said stationary portion for reciprocating linear movement and being secured to and carrying said package roll for reciprocating linear movement therewith, and means for maintaining a desired predetermined pressure relationship between said drive roll and said package roll and for linearly driving said package roll and comprising a variable torque reversible motor, a screw shaft connected to and rotated by said torque motor and a nut secured to said movable carriage portion and receiving said screw shaft therethrough for converting rotary movement of said screw shaft into linear movement of said movable carriage portion and package roll carried thereby; and means for compensating for variations in tension in the thread being wound due to increases and decreases in the length of the path of travel of the thread from the thread source to said package roll caused by the traversing action of said traversing mechanism.
Claim 3
Dependent Claim
332 words
The combination of: textile thread winding apparatus having a driven rotating drive roll, at least one freely rotatable package roll positioned on one side of said drive roll for engagement therewith to be driven thereby for the winding of thread and mounted for linear movement away from said drive roll as the thread package builds thereon, a thread traversing mechanism positioned on the other side of said drive roll for receiving the thread from a source and guiding the thread around said drive roll to said package roll while traversing the thread longitudinally of said drive roll, carriage means including a stationary portion and a movable portion carried by said stationary portion for reciprocating linear movement and being secured to and carrying said package roll for reciprocating linear movement therewith, and means for maintaining a desired predetermined pressure relationship between said drive roll and said package roll and for linearly driving said package roll and comprising a variable torque reversible motor, a screw shaft connected to and rotated by said torque motor and a nut secured to said movable carriage portion and receiving said screw shaft therethrough for converting rotary movement of said screw shaft into linear movement of said movable carriage portion and package roll carried thereby; and means for compensating for variations in tension in the thread being wound due to increases and decreases in the length of the path of travel of the thread from the thRead source to said package roll caused by the traversing action of said traversing mechanism, said tension compensating means comprising a deflector plate mounted adjacent to and in advance of said traversing mechanism and having an outwardly bowed surface positioned in the path of travel of the thread to deflect the thread in such a manner as to equalize the length of its path of travel while it is being traversed by said traversing mechanism so as to compensate for the variations in tension of the thread prior to reaching said traversing mechanism.
Claim 4
Dependent Claim
332 words
The combination of: textile thread winding apparatus having a driven rotating drive roll, at least one freely rotatable package roll positioned on one side of said drive roll for engagement therewith to be driven thereby for the winding of thread and mounted for linear movement away from said drive roll as the thread package builds thereon, a thread traversing mechanism positioned on the other side of said drive roll for receiving the thread from a source and guiding the thread around said drive roll to said package roll while traversing the thread longitudinally of said drive roll, carriage means including a stationary portion and a movable portion carried by said stationary portion for reciprocating linear movement and being secured to and carrying said package roll for reciprocating linear movement therewith, and means for maintaining a desired predetermined pressure relationship between said drive roll and said package roll and for linearly driving said package roll and comprising a variable torque reversible motor, a screw shaft connected to and rotated by said torque motor and a nut secured to said movable carriage portion and receiving said screw shaft therethrough for converting rotary movement of said screw shaft into linear movement of said movable carriage portion and package roll carried thereby; and means for compensating for variations in tension in the thread being wound due to increases and decreases in the length of the path of travel of the thread from the thRead source to said package roll caused by the traversing action of said traversing mechanism, said tension compensating means comprising a deflector plate mounted adjacent to and in advance of said traversing mechanism and having an outwardly bowed surface positioned in the path of travel of the thread to deflect the thread in such a manner as to equalize the length of its path of travel while it is being traversed by said traversing mechanism so as to compensate for the variations in tension of the thread prior to reaching said traversing mechanism.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |