US3842867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weft inserting carrier
Assignee: Draper Corp
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Filing: 1973-03-22
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Granted: 1974-10-22
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Expires: 1993-03-22
Abstract
Abstract A weft inserting carrier for a shuttleless loom in which weft yarn drawn from a stationary source is inserted as single picks into separate sheds formed by warp threads. The carrier is provided with a weft camming surface and a cooperating weft receiving and clamping device for positioning the weft for reception by a companion carrier adjacent the center of the shed.
Inventors
- 👤 R Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:08
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/20; D03D47/23; D03D47/233
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
168 words
For a shuttleless loom of the type for inserting single picks of weft yarn into separate sheds formed by warp threads, a weft inserting carrier which comprises front and rear side walls with a top planar surface interconnected therewith, a weft guide means in said rear side wall through which the weft yarn passes, said weft guide means being effective to guide the weft between said first and second locations and a weft receiving and clamping means carried by said front wall for clamping the weft end when the weft is being inserted into the warp shed, said clamping means including a guide finger fixed to said front wall, a laterally extending lip forming a part of the latter, and a weft engaging member carried by said guide finger, biasing means formed integrally with said weft engaging member to urge said member into yieldable contact with said lip in a manner such that the weft is subjected to increasing pressure upon insertion between said member and said lip.
Claim 2
Dependent Claim
168 words
For a shuttleless loom of the type for inserting single picks of weft yarn into separate sheds formed by warp threads, a weft inserting carrier which comprises front and rear side walls with a top planar surface interconnected therewith, a weft guide means in said rear side wall through which the weft yarn passes, said weft guide means being effective to guide the weft between said first and second locations and a weft receiving and clamping means carried by said front wall for clamping the weft end when the weft is being inserted into the warp shed, said clamping means including a guide finger fixed to said front wall, a laterally extending lip forming a part of the latter, and a weft engaging member carried by said guide finger, biasing means formed integrally with said weft engaging member to urge said member into yieldable contact with said lip in a manner such that the weft is subjected to increasing pressure upon insertion between said member and said lip.
Claim 3
Dependent Claim
57 words
The weft inserting carrier according to claim 1 wherein said biasing means includes an integrally formed leaf spring member at each end of said weft engaging member with the length of one spring member being greater than the other to effect a greater biasing force at one end of said engaging member than at the opposite end.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |