US3868813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for winding-off yarn ends
Assignee: Heberlein Hispano SA
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Filing: 1974-02-04
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Granted: 1975-03-04
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Expires: 1994-02-04
Abstract
Abstract Devices for detaching and winding off the exposed yarn end from a body of wound-up yarn on a bobbin by means of compressed air are disclosed, paricularly for use with automatic thread connection devices of ring spinning machines. Each device comprises a holder for a bobbin and a driving device for moving the bobbin to-and-fro in the axial direction relatively to at least three jet nozzles distributed equidistantly round the bobbin. The nozzles are set at an angle of about 45* to the bobbin axis so as to supply jets of compressed air that detach and wind off the yarn end which is received by a reception tube. The bobbin may remain displaced from the reception tube or alternatively the bobbin may be inserted in the tube, in which case the nozzle jets are directed into an annular gap between the bobbin and tube.
Inventors
- 👤 Louis Vignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:57
CPC Classifications
D; D01; D01H; D01H15/00; B; B65; B65H; B65H67/00; B65H67/08; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A device for detaching and winding off the exposed yarn end from a body of wound-up yarn on a bobbin by means of compressed air, comprising a holder for a bobbin; a duct system for compressed air comprising an inlet duct, at least three outlet nozzles arranged concentrically around and directed towards the axis of said bobbin when mounted on said holder, and intermediate duct means connecting said inlet duct to said nozzles; a driving device for effecting relative to-and-fro movement, in the direction of the axis of said bobbin, between said holder and said duct system, said nozzles being directed to detach and wind off the exposed yarn end from said bobbin; and a reception tube mounted to receive said yarn end when detached from said bobbin, said reception tube having an open end directed towards said nozzles.
Claim 2
Independent Claim
139 words
A device for detaching and winding off the exposed yarn end from a body of wound-up yarn on a bobbin by means of compressed air, comprising a holder for a bobbin; a duct system for compressed air comprising an inlet duct, at least three outlet nozzles arranged concentrically around and directed towards the axis of said bobbin when mounted on said holder, and intermediate duct means connecting said inlet duct to said nozzles; a driving device for effecting relative to-and-fro movement, in the direction of the axis of said bobbin, between said holder and said duct system, said nozzles being directed to detach and wind off the exposed yarn end from said bobbin; and a reception tube mounted to receive said yarn end when detached from said bobbin, said reception tube having an open end directed towards said nozzles.
Claim 3
Dependent Claim
20 words
A device as defined in claim 1, in which there are precisely four outlet nozzles equidistantly arranged round said bobbin.
Claim 4
Dependent Claim
75 words
A device as defined in claim 1, in which, for continuous modification of the relative position of said bobbin holder with respect to said nozzles and for causing a jet of compressed air from each nozzle, when said duct system is supplied with compressed air, to traverse said bobbin, said driving device is arranged to cause said nozzles to travel from one end of the bobbin in the longitudinal direction to the other end thereof.
Claim 5
Dependent Claim
52 words
A device as defined in claim 1, in which said nozzles are concentrically arranged at said inlet end of said reception tube and said nozzles are so directed into said tube that the yarn end detached from the bobbin is brought into said tube by the air current emanating from said nozzles.
Claim 6
Dependent Claim
55 words
A device as defined in claim 1, comprising a stationary support, said duct system and said reception tube being fixed to said support, said tube opening having a diameter enabling the bobbin to be inserted into said tube opening with a gap providing annular clearance thereabout, and said nozzles being directed immediately towards said gap.
Claim 7
Dependent Claim
17 words
A device as defined in claim 5, in which said jets are directed obliquely towards the bobbin.
Claim 8
Dependent Claim
28 words
A device as defined in claim 5, in which said nozzles are arranged at an angle of approximately 45* with respect to the longitudinal axis of the bobbin.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |