US3777466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing impurities and similar matter from staple fibres in ringless spinning and device for performing said method
Assignee: Vyzkumny Ustav Bavlnarsky AS
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Filing: 1970-05-13
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Granted: 1973-12-11
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Expires: 1990-05-13
Abstract
Abstract A method of removing impurities from staple fibres in ringless spinning and a device for performing said method. The impurities are ejected immediately after being contacted by the combing roller into a withdrawing space by the effect of the acceleration imparted thereto by said contact. Spinning units including a fibre separating mechanism and a rotary underpressure spinning chamber are employed. The inlet or the guiding walls for said impurities are directed in view of the separating roller tangentially. The withdrawing space can be connected to the central sucking device of the machine.
Inventors
- 👤 S Kabele
- 👤 C Doudlebsky
- 👤 F Jaros
- 👤 Z Svec
- 👤 B Brozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/30; D01H4/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
In a method of ringless spinning, the steps of advancing impurities-containing unopened fibers in a path leading to a spinning chamber; opening said fibers during advancement of the same so that impurities are liberated from them; continuously discharging the liberated impurities from said path into a withdrawing space which is in open communication with said path; and continuously withdrawing the discharged impurities from said withdrawing space by suction.
Claim 2
Dependent Claim
68 words
In a method of ringless spinning, the steps of advancing impurities-containing unopened fibers in a path leading to a spinning chamber; opening said fibers during advancement of the same so that impurities are liberated from them; continuously discharging the liberated impurities from said path into a withdrawing space which is in open communication with said path; and continuously withdrawing the discharged impurities from said withdrawing space by suction.
Claim 3
Dependent Claim
26 words
A method as defined in claim 2, wherein the step of discharging the liberated impurities comprises accelerating the same in a direction outwardly of said path.
Claim 4
Dependent Claim
26 words
A method as defined in claim 2, wherein the step of opening said fibers comprises subjecting the fibers to the combing-out action of a carding roller.
Claim 5
Dependent Claim
95 words
In an apparatus for ringless spinning of fibers, a combination comprising fiber passage means for advancement of fibers towards a spinning chamber; supply means for supplying unopened fibers into said fiber passage means; fiber opening means for opening said fibers during advancement thereof in sAid fiber passage means towards said spinning chamber; impurities discharge passage means communicating with said fiber passage means for continuous discharge of impurities which are liberated from the opened fibers; and suction means in open communication with said impurities discharge passage means for continuous withdrawal from the same of discharged impurities.
Claim 6
Dependent Claim
95 words
In an apparatus for ringless spinning of fibers, a combination comprising fiber passage means for advancement of fibers towards a spinning chamber; supply means for supplying unopened fibers into said fiber passage means; fiber opening means for opening said fibers during advancement thereof in sAid fiber passage means towards said spinning chamber; impurities discharge passage means communicating with said fiber passage means for continuous discharge of impurities which are liberated from the opened fibers; and suction means in open communication with said impurities discharge passage means for continuous withdrawal from the same of discharged impurities.
Claim 7
Dependent Claim
34 words
A combination as defined in claim 4; further comprising a hollow body having said passage means formed therein; and wherein said fiber opening means comprises a fiber opening roller rotatable in said hollow body.
Claim 8
Dependent Claim
68 words
A combination as defined in claim 5, wherein said fiber passage means comprises a first passage portion extending downstream from said supply means for advancement of unopened fibers, and a second passage portion extending from said first passage portion towards said spinning chamber for advancement of opened fibers; and wherein said impurities discharge passage means communicates with said fiber passage means between said passage portions of the same.
Claim 9
Dependent Claim
34 words
A combination as defined in claim 6, wherein said impurities discharge passage means has an inlet which communicates with said fiber passage means at least substantially tangentially with reference to said fiber opening roller.
Claim 10
Dependent Claim
18 words
A combination as defined in claim 7; and further comprising tangentially oriented guide baffles mounted in said inlet.
Claim 11
Dependent Claim
43 words
A combination as defined in claim 5, wherein said impurities discharge passage means has an inlet which communicates with said fiber passage means; and further comprising guide baffles mounted in said inlet and oriented substantially tangentially with reference to said fiber opening roller.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |