US4275773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weft cutting device in shuttleless loom
Assignee: Nissan Motor Co Ltd
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Filing: 1979-10-10
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Granted: 1981-06-30
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Expires: 1999-10-10
Abstract
Abstract A weft cutting device in a shuttleless loom is provided with a plate-like cutting member which after completion of beating is caused to move between a pair of weft guide members and across the weft held in position by stepped portions provided for the guide members. Escapement of the weft from the stepped portion is prohibited by an escapement preventing member located near the guide members. Weft is sufficiently tensioned by a tensioning member disposed near the cutting member and engaging weft earlier than the cutting member.
Inventors
- 👤 Kazuo Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:57
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
109 words
A device for cuttings wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, and a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft engaged by the guide members and a further weft guide member is provided on the outer side of the pair of the weft guide members between which the cutting member moves.
Claim 2
Independent Claim
109 words
A device for cuttings wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, and a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft engaged by the guide members and a further weft guide member is provided on the outer side of the pair of the weft guide members between which the cutting member moves.
Claim 3
Independent Claim
135 words
A device for cutting wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, each weft guide member being formed with a stepped portion shaped to hold the weft, an escapement preventing member disposed near the stepped portions of the weft guide members so as to prevent escapement of the weft from the stepped portions by which the weft is held, and a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft held by the stepped portions of the weft guide members.
Claim 4
Independent Claim
135 words
A device for cutting wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, each weft guide member being formed with a stepped portion shaped to hold the weft, an escapement preventing member disposed near the stepped portions of the weft guide members so as to prevent escapement of the weft from the stepped portions by which the weft is held, and a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft held by the stepped portions of the weft guide members.
Claim 5
Dependent Claim
53 words
The device as defined in claim 2, wherein the escapement preventing member is disposed on the side of the cutting member which is remote from the cloth, the escapement preventing member being so arranged as to limit an upward movement of the weft held by the stepped portions of the weft guide members.
Claim 6
Dependent Claim
34 words
The device as defined in claim 2, wherein the cutting member is fixedly connected to a reed of the loom for effecting the beating to thereby provide a synchronous motion of the cutting member.
Claim 7
Dependent Claim
44 words
The device as defined in claim 2, wherein each weft guide member is provided with an inclined guide portion extending substantially at the same angle with lower warps forming a warp shed, the stepped portion being disposed at one end of the inclined portion.
Claim 8
Dependent Claim
33 words
The device as defined in claim 2, wherein a further weft guide member is provided on the outer side of the pair of the weft guide members between which the cutting member moves.
Claim 9
Independent Claim
160 words
A device for cutting wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, each weft guide member being formed with a stepped portion shaped to hold the weft, an escapement preventing member disposed in the vicinity of the stepped portions of the weft guide members so as to prevent escapement of the weft from the stepped portions by which the weft is held, a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft held by the stepped portions of the weft guide members, and a tensioning member disposed near the cutting member and so arranged as to move across the weft earlier than the cutting member.
Claim 10
Independent Claim
160 words
A device for cutting wefts in a shuttleless loom comprising a plurality of juxtaposed weft guide members disposed on a side of a woven cloth, the weft guide members engaging the weft during and after beating so as to guide the weft toward the cloth fell, each weft guide member being formed with a stepped portion shaped to hold the weft, an escapement preventing member disposed in the vicinity of the stepped portions of the weft guide members so as to prevent escapement of the weft from the stepped portions by which the weft is held, a plate-like cutting member adapted to move synchronously with the loom between a pair of the guide members, the cutting member after the beating being caused to move across the weft held by the stepped portions of the weft guide members, and a tensioning member disposed near the cutting member and so arranged as to move across the weft earlier than the cutting member.
Claim 11
Dependent Claim
18 words
The device as defined in claim 7, wherein the tensioning member is integrally connected to the cutting member.
Claim 12
Dependent Claim
27 words
The device as defined in claim 7, wherein the tensioning member is located on the side of the cutting member which is remote from the woven cloth.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |