US3922839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preventing accumulation of fibers in a spinning machine
Assignee: Daiwa Boseki KK
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Filing: 1974-05-20
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Granted: 1975-12-02
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Expires: 1994-05-20
Abstract
Abstract A device for preventing accumulation of fibers in the space between the free lateral surfaces of a feed roller and a combing roller and the inner surface of a closure plate covering the feed roller and combing roller in a spinning machine. A groove is formed on the inner surface of the closure plate extending in opposition to at least portions of the free lateral surfaces of the feed roller and combing roller and one end of the groove is connected to an air suction source, either to a channel for feeding combed fibers to a rotary spinning chamber, or to a duct which conducts the air exhausted from a rotary spinning chamber. The air current produced in the portion of the groove which covers the free lateral surface of the combing roller is substantially in the same direction as the direction of the air current produced by the rotation of the combing roller in the portion of the space which is opposed to the groove.
Inventors
- 👤 Waichi Sakurai
- 👤 Sadanobu Yoshie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:11
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/30; D01H4/36
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
235 words
In a fiber spinning machine of the type including a body having rotatably mounted therein a fiber feed roller and a combing roller; said feed roller and combing roller having free lateral surfaces; a closure plate attached to said body and having an inner surface forming a space with said free lateral surfaces of said feed roller and combing roller; a rotary spinning chamber; a duct connected to said spinning chamber for exhausting air therefrom; and a channel extending through said body to a doffing area adjacent the periphery of said combing roller and to said spinning chamber for feeding fibers doffed from said combing roller at said doffing area to said spinning chamber; the improvement comprising: means for preventing accumulation of fibers in said space between said free lateral surfaces of said feed roller and combing roller and said inner surfaces of said closure plate; said means comprising a groove formed in said inner surface of said closure plate, said groove extending in opposition to at least portions of said free lateral surfaces of said feed roller and Combing roller, said groove having a first end communicating with said channel at a position thereof upstream from said doffing area, and said groove having a second end communicating with ambient atmosphere, whereby upon operation of said machine an air current is formed in said groove from said second end thereof to said first end thereof.
Claim 2
Dependent Claim
235 words
In a fiber spinning machine of the type including a body having rotatably mounted therein a fiber feed roller and a combing roller; said feed roller and combing roller having free lateral surfaces; a closure plate attached to said body and having an inner surface forming a space with said free lateral surfaces of said feed roller and combing roller; a rotary spinning chamber; a duct connected to said spinning chamber for exhausting air therefrom; and a channel extending through said body to a doffing area adjacent the periphery of said combing roller and to said spinning chamber for feeding fibers doffed from said combing roller at said doffing area to said spinning chamber; the improvement comprising: means for preventing accumulation of fibers in said space between said free lateral surfaces of said feed roller and combing roller and said inner surfaces of said closure plate; said means comprising a groove formed in said inner surface of said closure plate, said groove extending in opposition to at least portions of said free lateral surfaces of said feed roller and Combing roller, said groove having a first end communicating with said channel at a position thereof upstream from said doffing area, and said groove having a second end communicating with ambient atmosphere, whereby upon operation of said machine an air current is formed in said groove from said second end thereof to said first end thereof.
Claim 3
Dependent Claim
59 words
The improvement claimed in claim 1, wherein said air current in that portion of said groove opposed to said free lateral surface of said combing roller moves substantially in the same direction as the direction of an air current produced by the rotation of said combing roller in that portion of said space which is opposed to said groove.
Claim 4
Dependent Claim
24 words
The improvement claimed in claim 1, wherein said second end of said groove is opened in a peripheral outer surface of said closure plate.
Claim 5
Dependent Claim
38 words
The improvement claimed in claim 1, wherein said second end of said groove is located in opposition to said feed roller and a presser cooperating with said feed roller to feed a fiber sliver to said combing roller.
Claim 6
Dependent Claim
32 words
The improvement claimed in claim 1, wherein said groove covers substantially the entire free lateral surface of said feed roller and approximately half of the free lateral surfaces of said combing roller.
Claim 7
Dependent Claim
226 words
In a fiber spinning machine of the type including a body having rotatably mounted therein a fiber feed roller and a combing roller; said feed roller and combing roller having free lateral surfaces; a closure plate attached to said body and having an inner surface forming a space with said free lateral surfaces of said feed roller an combing roller; a rotary spinning chamber; a duct connected to said spinning chamber for exhausting air therefrom; and a channel extending through said body to a doffing area adjacent the periphery of said combing roller and to said spinning chamber for feeding fibers doffed from said combing roller at said doffing area to said spinning chamber; the improvement comprising: means for preventing accumulation of fibers in said space between said free lateral surfaces of said feed roller and combing roller and said inner surface of said closure plate; said means comprising a groove formed in said inner surface of said closure plate, said groove extending in opposition to at least portions of said free lateral surfaces of said feed roller and combing roller, said groove having a first end communicating with said duct, and said groove having a second end communicating with ambient atmosphere, whereby upon operation of said machine an air current is formed in said groove from said second end thereof to said first end thereof.
Claim 8
Dependent Claim
226 words
In a fiber spinning machine of the type including a body having rotatably mounted therein a fiber feed roller and a combing roller; said feed roller and combing roller having free lateral surfaces; a closure plate attached to said body and having an inner surface forming a space with said free lateral surfaces of said feed roller an combing roller; a rotary spinning chamber; a duct connected to said spinning chamber for exhausting air therefrom; and a channel extending through said body to a doffing area adjacent the periphery of said combing roller and to said spinning chamber for feeding fibers doffed from said combing roller at said doffing area to said spinning chamber; the improvement comprising: means for preventing accumulation of fibers in said space between said free lateral surfaces of said feed roller and combing roller and said inner surface of said closure plate; said means comprising a groove formed in said inner surface of said closure plate, said groove extending in opposition to at least portions of said free lateral surfaces of said feed roller and combing roller, said groove having a first end communicating with said duct, and said groove having a second end communicating with ambient atmosphere, whereby upon operation of said machine an air current is formed in said groove from said second end thereof to said first end thereof.
Claim 9
Dependent Claim
59 words
The improvement claimed in claim 6, wherein said air current in that portion of said groove opposed to said free lateral surface of said combing roller moves substantially in the same direction as the direction of an air current produced by the rotation of said combing roller in that portion of said space which is opposed to said groove.
Claim 10
Dependent Claim
24 words
The improvement claimed in claim 6, wherein said second end of said groove is opened in a peripheral outer surface of said closure plate.
Claim 11
Dependent Claim
38 words
The improvement claimed in claim 6, wherein said second end of said groove is located in opposition to said feed roller and a presser cooperating with said feed roller to feed a fiber sliver to said combing roller.
Claim 12
Dependent Claim
32 words
The improvement claimed in claim 6, wherein said groove covers substantially the entire free lateral surface of said feed roller and approximately half of the free lateral surface of said combing roller.
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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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |