US4715410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weaving loom
Assignee: Sulzer AG
•
Filing: 1986-09-16
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Granted: 1987-12-29
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Expires: 2006-09-16
Abstract
Abstract Apparatus for turning the end of a weft yarn into a warp shed for creation of a selvedge, the apparatus including a movable guide which in a first position is located outside the warp sheet to receive the end of a weft yarn after weft insertion, and which is movable to a second position located within the warp shed whereby the guide serves to separate the end of the weft yarn from the warp threads. A fluid jet nozzle is associated with the guide and is positioned to direct a flow of fluid along the guide, after the guide is moved inwardly to the second position, for carrying the end of the weft yarn into the warp shed.
Inventors
- 👤 John D. Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:22
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/40; D03D47/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
Apparatus for turning a weft yarn into a warp shed for creating of a selvedge, the apparatus including a movable guide which in a first position is located outside the warm sheet to receive the end of the weft yarn after weft insertion, said guide being movable to a second position located within the warp shed so that said guide serves to separate the upper and lower warp threads adjacent the fell of the warp shed prior to turning in of the weft yarn end and to thereby prevent snagging of the end of the weft yarn on the upper and lower warp threads, and a fluid jet nozzle associated with said guide, said jet nozzle being positioned to direct a flow of fluid along said guide for carrying the end of the weft yarn into the warp shed and through said guide after said guide has moved to said second position.
Claim 2
Dependent Claim
152 words
Apparatus for turning a weft yarn into a warp shed for creating of a selvedge, the apparatus including a movable guide which in a first position is located outside the warm sheet to receive the end of the weft yarn after weft insertion, said guide being movable to a second position located within the warp shed so that said guide serves to separate the upper and lower warp threads adjacent the fell of the warp shed prior to turning in of the weft yarn end and to thereby prevent snagging of the end of the weft yarn on the upper and lower warp threads, and a fluid jet nozzle associated with said guide, said jet nozzle being positioned to direct a flow of fluid along said guide for carrying the end of the weft yarn into the warp shed and through said guide after said guide has moved to said second position.
Claim 3
Dependent Claim
57 words
Apparatus according to claim 1 wherein said movable guide includes a pair of upper and lower plate members spaced apart to define a gap therebetween for receiving the end of the weft yarn and for guiding the flow of fluid therealong for carrying the end of the weft yarn through the gap and into the warp shed.
Claim 4
Dependent Claim
37 words
Apparatus according to claim 2 wherein said movable guide is arranged so that in its first position said gap is aligned with the path of weft insertion so as to receive the end of the weft yarn.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 1 including a weft yarn holding device located upstream of said guide for receiving the end of the weft yarn prior to beat-up.
Claim 6
Independent Claim
164 words
A method of turning the end of a weft yarn into a warp shed for creation of a selvedge, the method including receiving the end of a weft yarn protruding from the warp sheet in a movable guide, after beat-up moving the guide into the newly formed warp shed to separate the upper and lower warp threads adjacent the fell of the warp shed prior to turning in of the weft yarn end and to thereby provide a passageway for the end of the weft yarn, directing a flow of fluid along the passageway to move the end of the weft yarn into the warp shed and through the passageway provided by the inwardly moved guide to prevent snagging of the end of the weft yarn on the upper and lower warp threads, removing the guide from the warp shed while maintaining said flow of fluid for maintaining the end of the weft yarn in position until beat-up of the subsequently inserted weft yarn.
Claim 7
Independent Claim
164 words
A method of turning the end of a weft yarn into a warp shed for creation of a selvedge, the method including receiving the end of a weft yarn protruding from the warp sheet in a movable guide, after beat-up moving the guide into the newly formed warp shed to separate the upper and lower warp threads adjacent the fell of the warp shed prior to turning in of the weft yarn end and to thereby provide a passageway for the end of the weft yarn, directing a flow of fluid along the passageway to move the end of the weft yarn into the warp shed and through the passageway provided by the inwardly moved guide to prevent snagging of the end of the weft yarn on the upper and lower warp threads, removing the guide from the warp shed while maintaining said flow of fluid for maintaining the end of the weft yarn in position until beat-up of the subsequently inserted weft yarn.
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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) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |