Apparatus for winding endless yarns on a spool
Abstract
Abstract A METHOD AND APPARATUS FOR WINDING ENDLESS YARNS ON A SPOOL IS DISCLOSED, THE METHOD AND APPARATUS PROVIDING A WINDING HAVING A CONSTANT WINDING RATIO, I.E., A SOCALLED "PRECISION WINDING," WHEREIN THE NUMBER OF SPOOL REVOLUTIONS PER THREAD-GUIDE STROKE IN A CROSS WINDING ARRANGEMENT REMAINS CONSTANT. THE INVENTIVE METHOD AND APPARATUS IS APPLICABLE FOR WINDING AN ENDLESS YARN FED AT A CONSTANT SPEED ONTO A SPOOL DRIVEN AT ITS CIRCUMFERENCE BY A DRIVE CYLINDER. THE THREAD IS FED TO THE SPOOL VIA A GROOVED DRUM OR A THREAD-GUIDE OPERATED BY A GROOVED DRUM. THE DRIVE CYLINDER IS DRIVEN IN KNOWN MANNER AT A CONSTANT SPEED. YET, THE GROOVED DRUM ITSELF IS DRIVEN IN DEPENDENCE UPON AND AS A FUNCTION OF THE NUMBER OF ROTATIONS OF THE YARN SPOOL OR THE DIAMETER OF THE YARN SPOOL AND THUS A CONSTANT WINDING RATIO IS MAINTAINED.
Inventors
- 👤 Rudolf Jenny
Bibliographic Details
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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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |