Patent US3842579A successfully refreshed from Google Patents.
US3842579A
Expired / Lapsed
US
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Apparatus for temporarily storing thread in a spindleless spinning machine
Assignee: SKF GmbH
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Filing: 1973-04-20
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Granted: 1974-10-22
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Expires: 1993-04-20
Abstract
Abstract Method and apparatus for rejoining broken thread in a spindleless spinning machine wherein the thread is formed in a turbine and withdrawn on to a spool. The breakage of the thread is sensed and in response thereto the spinning operation is stopped and the thread reversed into the spinning turbine. Upon the restarting of spinning, means are provided to temporarily store a loop of thread in order to compensate for the faster action of the spinning turbine than that of the withdrawing spool. The means comprise a hollow suction chamber located adjacent the path of the thread.
Inventors
- 👤 G Bartling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:01
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/48; D01H4/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
Apparatus for temporarily storing excess lengths of thread formed on the turbine of a spindleless spinning machine for subsequent winding on a spool, comprising a hollow chamber located between the turbine and the spool having an opening located adjacent the path of the thread, a source of suction connected to said chamber, the magnitude of said suction being selected so that when the tension on said thread falls below a predetermined value, the thread is caused to be drawn as a loop into said chamber.
Claim 2
Dependent Claim
85 words
Apparatus for temporarily storing excess lengths of thread formed on the turbine of a spindleless spinning machine for subsequent winding on a spool, comprising a hollow chamber located between the turbine and the spool having an opening located adjacent the path of the thread, a source of suction connected to said chamber, the magnitude of said suction being selected so that when the tension on said thread falls below a predetermined value, the thread is caused to be drawn as a loop into said chamber.
Claim 3
Dependent Claim
36 words
The apparatus according to claim 1 wherein the hollow chamber comprises an open end tube connected at one end to the source of suction and having a nozzle at its other end located adjacent the thread.
Claim 4
Dependent Claim
15 words
The apparatus according to claim 2 wherein the nozzle is formed integrally with said tube.
Claim 5
Dependent Claim
33 words
The apparatus according to claim 1 including take up means arranged to withdraw the thread from said turbine and wherein said nozzle is located between said take up means and said winding spool.
Claim 6
Dependent Claim
33 words
The apparatus according to claim 4 wherein said take up means comprises a pair of contacting nip rollers, said nozzle being arranged facing said rollers and lying along the line of contact thereof.
Claim 7
Dependent Claim
26 words
The apparatus according to claim 1 wherein said source of suction is identical with the source of suction for evacuating the turbine of said spinning machine.
Claim 8
Dependent Claim
43 words
The apparatus according to claim 2 wherein between the source of suction and the nozzle of the tube there are provided valve means for adjusting the suction and the air speed in the tube in compliance with the characteristics of the thread spun.
Claim 9
Dependent Claim
38 words
The apparatus according to claim 2 wherein at least one of the tube and the nozzle are exchangable for adjusting the suction and the air speed in the tube in compliance with the characteristiCs of the thread spun.
Claim 10
Dependent Claim
30 words
The apparatus according to claim 8, characterized in that valve means are provided for completely disconnecting the tube from the source of suction during normal operation of the spinning machine.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |