US4398568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for stopping and resetting a loom
Assignee: Individual
•
Filing: 1981-04-02
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Granted: 1983-08-16
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Expires: 2001-04-02
Abstract
Abstract An apparatus for stopping and resetting a loom. The technical problem which lies at the foundation of the present invention is to provide an apparatus for stopping and resetting a loom to a certain position before a weft stroke which has given an indication of breakage. This technical problem is solved according to the present invention in that a weft fork which senses the weft, and, in the event of a predetermined breakage type in the movement of the weft during a sensing period emits a signal for stopping the loom, is arranged to prevent gripping of a new weft after the generation of a breakage signal, whereby the rapier or rapiers execute one or more strokes without a weft.
Inventors
- 👤 Sten A. O. Rydborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:14
CPC Classifications
D; D03; D03D; D03D51/00; D03D51/06; D03D51/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
In a shuttleless loom including means for holding warp threads, means for holding weft threads, a weft selector for moving a selected weft thread to a gripping position, at least one rapier for gripping the selected thread at the gripping position and moving with the gripped thread across the loom and through the warp shed to form woven material on the loom, and weft signaling means for sensing the movement of weft thread from the weft holding means to the gripping position and across the loom and for generating a signal in the absence of such movement, the improvement comprising means responsive to the signal from the weft signaling means at the time the rapier is moving across the loom for preventing the weft selector from moving the selected weft thread to the gripping position to prevent the rapier from gripping the thread, whereby the rapier moves across the loom without the weft thread.
Claim 2
Dependent Claim
154 words
In a shuttleless loom including means for holding warp threads, means for holding weft threads, a weft selector for moving a selected weft thread to a gripping position, at least one rapier for gripping the selected thread at the gripping position and moving with the gripped thread across the loom and through the warp shed to form woven material on the loom, and weft signaling means for sensing the movement of weft thread from the weft holding means to the gripping position and across the loom and for generating a signal in the absence of such movement, the improvement comprising means responsive to the signal from the weft signaling means at the time the rapier is moving across the loom for preventing the weft selector from moving the selected weft thread to the gripping position to prevent the rapier from gripping the thread, whereby the rapier moves across the loom without the weft thread.
References Cited (Backward Citations)
US2703591A
Cited
US3805850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |