US3845612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning apparatus
Assignee: Hollingsworth UK Ltd
•
Filing: 1973-02-23
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Granted: 1974-11-05
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Expires: 1993-02-23
Abstract
Abstract A method of and apparatus for the open-end spinning of textile yarns, includes feeding fibres through a feed duct to an internal fibre collecting surface of an open-ended spinning rotor, removing spun yarn from the spinning rotor through a yarn delivery duct, and passing air continuously through the interior of the spinning rotor by means of an air passage extending through a cover member adjacent an open end of the rotor, whereby debris is removed from the interior of the rotor during the spinning operation.
Inventors
- 👤 A Chisholm
- 👤 C Copple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:20
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
Apparatus for the open end spinning of textile yarns comprising, a spinning rotor which is open at one end, a fibre collecting surface within the spinning rotor, a cover member adjacent said open end of the spinning rotor, a fibre feed duct for conveying fibres to said fibre collecting surface, a yarn delivery duct through which spun yarn is removed from the spinning rotor, and an air passage extending through the cover for continuously withdrawing air from the interior of the spinning rotor during the spinning operation, whereby air passes through the interior of the spinning rotor to remove debris therefrom.
Claim 2
Dependent Claim
101 words
Apparatus for the open end spinning of textile yarns comprising, a spinning rotor which is open at one end, a fibre collecting surface within the spinning rotor, a cover member adjacent said open end of the spinning rotor, a fibre feed duct for conveying fibres to said fibre collecting surface, a yarn delivery duct through which spun yarn is removed from the spinning rotor, and an air passage extending through the cover for continuously withdrawing air from the interior of the spinning rotor during the spinning operation, whereby air passes through the interior of the spinning rotor to remove debris therefrom.
Claim 3
Dependent Claim
133 words
Apparatus for the open-end spinning of yarns comprising, a spinning rotor which is open at one end, a fibre collecting surface within the spinning rotor, a cover member adjacent said open end of the spinning rotor, a fibre feed duct for conveying fibres to said fibre collecting surface, a yarn delivery duct co-axial with the axis of the spinning rotor for removing spun yarn from the spinning rotor and having an edge thereof located within the spinning rotor, and an air passage extending through the cover and terminating adjacent the edge of the yarn delivery duct for passing air continuously through the interior of the spinning rotor, whereby yarn entering the yarn delivery duct engages with the edge thereof to release debris entrained in the yarn, which debris is removed by said air.
Claim 4
Dependent Claim
133 words
Apparatus for the open-end spinning of yarns comprising, a spinning rotor which is open at one end, a fibre collecting surface within the spinning rotor, a cover member adjacent said open end of the spinning rotor, a fibre feed duct for conveying fibres to said fibre collecting surface, a yarn delivery duct co-axial with the axis of the spinning rotor for removing spun yarn from the spinning rotor and having an edge thereof located within the spinning rotor, and an air passage extending through the cover and terminating adjacent the edge of the yarn delivery duct for passing air continuously through the interior of the spinning rotor, whereby yarn entering the yarn delivery duct engages with the edge thereof to release debris entrained in the yarn, which debris is removed by said air.
Claim 5
Dependent Claim
28 words
Apparatus according to claim 2 wherein the yarn delivery duct passes through the cover member and terminates within the interior of the spinning rotor in a flared mouth.
Claim 6
Dependent Claim
25 words
Apparatus according to claim 2 wherein the air passage is arranged to pass air into the interior of the spinninG rotor to remove debris therefrom.
Claim 7
Dependent Claim
42 words
Apparatus according to claim 2 wherein the air passage terminates within the spinning rotor in an annular portion which surrounds and is co-axial with the yarn delivery duct, the entrance to said portion lying adjacent said edge of the yarn delivery duct.
Claim 8
Dependent Claim
58 words
Apparatus according to claim 5 wherein the entrance of the yarn delivery duct is substantially frusto-conical, the air passage at said terminal portion being defined by the outer surface of said frusto-conical flared entrance and a corresponding frusto-conical surface of the cover member whereby air passes through the interior of the spinning rotor in a substantially radial direction.
Claim 9
Dependent Claim
38 words
Apparatus according to claim 6 wherein the cover member includes a removable annular insert which surrounds said yarn delivery duct to form said annular portion of the air passage and includes a surface forming said corresponding frusto-conical surface.
Claim 10
Dependent Claim
27 words
Apparatus according to claim 2 wherein the air passage includes adjusting means whereby the passage of air through the interior of the spinning rotor may be varied.
Claim 11
Dependent Claim
16 words
Apparatus according to claim 8 wherein said adjusting means comprises an orifice plate of adjustable diameter.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |