US3865321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic control system for use in automatic yarn transfer system
Assignee: Savio SpA
•
Filing: 1973-05-25
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Granted: 1975-02-11
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Expires: 1993-05-25
Abstract
Abstract A winder for yarn and the like, having the automatic yarn transfer system of the present invention, includes a drive roll and at least two rotatable chucks each of which is adapted to carry a bobbin tube and is movable into and out of driven engagement with the drive roll. A traversing arrangement traverses a running yarn which is being wound onto one of the chucks, so as to form a yarn package on the latter. A transfer arrangement effects automatic transfer of the running yarn from the one chuck, upon forming of the yarn package thereon, to the other of the chucks. When the yarn package has been formed on the other chuck the running yarn is then automatically transferred again to the first-mentioned chuck.
Inventors
- 👤 Harry B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:25
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/04; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
In a winder for simultaneously winding at least one yarn or the like which has a drive roll, a plurality of rotatable chucks each movable into and out of driven engagement with said drive roll, a yarn aspirator rotatable to a plurality of positions including three positions in each of which its inlet is located adjacent one of said chucks, and a yarn transfer arrangement for transferring running yarn via said aspirator between respective ones of said chucks, a pneumatic control system including a plurality of pneumatic switches; pneumatic conduits connecting respective ones of said switches with said chucks, aspirator and yarn transfer arrangement; and a plurality of cams associated with respective ones of said switches for operating the same in programmed sequence so as to control the operations of said chucks, aspirator and yarn transfer arrangement, respectively.
Claim 2
Dependent Claim
138 words
In a winder for simultaneously winding at least one yarn or the like which has a drive roll, a plurality of rotatable chucks each movable into and out of driven engagement with said drive roll, a yarn aspirator rotatable to a plurality of positions including three positions in each of which its inlet is located adjacent one of said chucks, and a yarn transfer arrangement for transferring running yarn via said aspirator between respective ones of said chucks, a pneumatic control system including a plurality of pneumatic switches; pneumatic conduits connecting respective ones of said switches with said chucks, aspirator and yarn transfer arrangement; and a plurality of cams associated with respective ones of said switches for operating the same in programmed sequence so as to control the operations of said chucks, aspirator and yarn transfer arrangement, respectively.
Claim 3
Dependent Claim
100 words
In a winder as defined in claim 1, wherein said yarn transfer arrangement comprises a first and a second yarn engaging member each adapted to engage a single running yarn and movable between two end positions, and a third yarn engaging member adapted to engage both running yarns and also movable between two end positions; and wherein some of said switches and conduits are associated with said yarn engaging members, and some of said cams are associated with said some switches, so as to effect movement of said yarn engaging members between the end positions thereof in a programmed sequence.
Claim 4
Dependent Claim
24 words
In a winder as defined in claim 1, wherein said switches include respective cam followers each associated with a respective one of said cams.
Claim 5
Dependent Claim
47 words
In a winder as defined in claim 1, wherein said winder further comprises a cutter for the running yarns and wherein one of said switches and one of said cams cooperate and are associated with said cutter for operating the same in accordance with said programmed sequence.
Claim 6
Dependent Claim
25 words
In a winder as defined in claim 1, wherein said cams are rotary cams, and said switches comprise cam followers cooperating with the respective cams.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |