US3581487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn drawing machine
Assignee: Akzo Nobel UK PLC
•
Filing: 1969-07-02
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Granted: 1971-06-01
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Expires: 1989-07-02
Abstract
Abstract A yarn drawing machine draws yarn between a feed roller and a draw roller which has an associated separator roller for spacing the turns of yarn. The separator roller has a flange of which the peripheral surface frictionally contacts the yarn as it passes onto the separator roller initially so as to false twist the yarn; the twist runs back along the yarn to a region in which the yarn is heated. The yarn is thereby given a potential crimp which is realized when the yarn is relaxed.
Inventors
- 👤 William Charles Loomes
- 👤 Arthur James Marrs
- 👤 Peter Heffernan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:22
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/022
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
18 words
A yarn drawing machine as claimed in claim 1 in which the separator roller is an idling roller.
Claim 2
Dependent Claim
22 words
A yarn drawing machine as claimed in claim 1 in which the flange on the separator roller is made of hard rubber.
Claim 3
Dependent Claim
35 words
A yarn drawing machine as claimed in claim 1, including a snubbing pin located between the feed roller and the draw roller for determining the length of yarn along which the false twist runs back.
Claim 4
Dependent Claim
33 words
A yarn drawing machine as claimed in claim 4 in which the means for heating the yarn extends along the yarn path between the snubbing pin and the flange on the separator roller.
Claim 5
Dependent Claim
27 words
A yarn drawing machine as claimed in claim 1 including a mounting for a yarn package off which yarn is to be pulled by the feed roller.
Claim 6
Dependent Claim
99 words
A yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, means for heating the yarn in the region before it passes to the flange of the separator roller, and means for collecting the yarn after it has passed off the draw roller.
Claim 7
Dependent Claim
21 words
A yarn drawing machine as claimed in claim 7 in which the means for collecting the yarn comprises a ring twister.
References Cited (Backward Citations)
US2410419A
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US3094834A
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US3261154A
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US3287888A
Cited
US3457338A
Cited
US3462938A
Cited
GB1098545A
Cited
US3435603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |