US3636698A
Expired / Lapsed
US
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Method of threading a two-for-one yarn twister
Assignee: Murata Machinery Ltd
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Filing: 1969-06-06
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Granted: 1972-01-25
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Expires: 1989-06-06
Abstract
Abstract In a two-for-one yarn twister, a specially shaped yarn guide path is formed radially extending from a central longitudinal aperture of a spindle to a peripheral yarn guide of a storage disc. Further, a successive yarn guide path from the peripheral yarn guide towards an upper yarn guide member is given as a clearance between an inside and outside balloon limiting mantle. Initial yarn guiding is performed by firstly tying a leading end of a yarn drawn out of a package to a trailing end of a flexible yarn conductor, next, inserting a leading end of the conductor successively into a central aperture of an upper tension device of the twister.
Inventors
- 👤 Teiji Nakahara
- 👤 Hideo Yanobu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/86; D01H7/868; D01H15/00; D01H15/007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
233 words
The method of threading a yarn using a flexible yarn conductor on a two-for-one yarn twister having a yarn-guiding mechanism wherein a yarn guide is aligned with a longitudinal aperture formed withiN a spindle of said yarn twister comprising the steps of: a. drawing said yarn from a yarn package on said twister; b. tying a leading end of said yarn to an end of said yarn conductor; c. inserting said yarn conductor longitudinally into a central aperture of an upper tension device; d. threading said yarn conductor longitudinally through said tension device in a first direction; e. bending a leading edge of said yarn conductor to pass from said aperture in only one direction substantially normal to said first direction; f. conducting said leading edge smoothly in a resultant direction combining said normal and first direction; g. sliding said leading edge continuously through an opening in said yarn guide; h. passing said yarn conductor through a longitudinal path in a second direction opposing said first direction between an inside and an outside balloon-limiting mantle of said yarn guiding mechanism; i. pulling out a leading end of said yarn conductor when said leading end reaches an upper brim of said outside balloonlimiting mantle; and, j. catching said leading end of said yarn by hand when a trailing end of said yarn conductor comes to said upper brim position of said outside balloon-limiting mantle.
Claim 2
Independent Claim
233 words
The method of threading a yarn using a flexible yarn conductor on a two-for-one yarn twister having a yarn-guiding mechanism wherein a yarn guide is aligned with a longitudinal aperture formed withiN a spindle of said yarn twister comprising the steps of: a. drawing said yarn from a yarn package on said twister; b. tying a leading end of said yarn to an end of said yarn conductor; c. inserting said yarn conductor longitudinally into a central aperture of an upper tension device; d. threading said yarn conductor longitudinally through said tension device in a first direction; e. bending a leading edge of said yarn conductor to pass from said aperture in only one direction substantially normal to said first direction; f. conducting said leading edge smoothly in a resultant direction combining said normal and first direction; g. sliding said leading edge continuously through an opening in said yarn guide; h. passing said yarn conductor through a longitudinal path in a second direction opposing said first direction between an inside and an outside balloon-limiting mantle of said yarn guiding mechanism; i. pulling out a leading end of said yarn conductor when said leading end reaches an upper brim of said outside balloonlimiting mantle; and, j. catching said leading end of said yarn by hand when a trailing end of said yarn conductor comes to said upper brim position of said outside balloon-limiting mantle.
Claim 3
Dependent Claim
43 words
The method of threading a yarn as recited in claim 1 wherein the step of conducting said leading edge includes the step of guiding said leading edge in a converging path which leads to a second conductor path direction opposing said first direction.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |