US3613740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weft-passing device for a shuttleless loom
Assignee: Alsacienne de Constructions Mecaniques SA
•
Filing: 1969-12-01
•
Granted: 1971-10-19
•
Expires: 1989-12-01
Abstract
Abstract A weft-transfer device for a shuttleless loom comprises a needle having at one end a grab with a fixed jaw and a pivotal jaw spring-urged to the closed position, a spring-loaded sliding catch for engaging a tail on the pivotal jaw and holding the latter open, a cam formation on said tail for engaging an abutment to effect engagement of the catch and tail, upon movement of the needle in one direction and near the end of its passage out of the shed, a projection connected to the sliding catch, and a stop which is engaged by said projection to release the catch when the needle moves in the other direction to its position for catching a weft thread.
Inventors
- 👤 Bernard Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/20; D03D47/23
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
A weft-thread passing device for a shuttleless weaving loom, comprising a weft-thread pickup needle provided with a clamp having a fixed jaw and a movable jaw urged by resilient return means towards the fixed jaw, means for retaining the movable jaw in an open condition, means for neutralizing the said retaining condition, means for neutralizing the said retaining means when the needle reaches a position for catching a weft thread, and means for controlling the opening of the movable jaw when the needle is near the end of its passage out of the shed, in which the movable jaw is pivotable on the fixed jaw about a transverse axis, and has an extension beyond said axis, the means for retaining the movable jaw in the open condition comprises a slide movable longitudinally in the needle and resiliently urged against said extension of the movable jaw, the means for controlling the opening of the movable jaw comprises a stationary abutment located in the path of said extension of the movable jaw.
Claim 2
Dependent Claim
170 words
A weft-thread passing device for a shuttleless weaving loom, comprising a weft-thread pickup needle provided with a clamp having a fixed jaw and a movable jaw urged by resilient return means towards the fixed jaw, means for retaining the movable jaw in an open condition, means for neutralizing the said retaining condition, means for neutralizing the said retaining means when the needle reaches a position for catching a weft thread, and means for controlling the opening of the movable jaw when the needle is near the end of its passage out of the shed, in which the movable jaw is pivotable on the fixed jaw about a transverse axis, and has an extension beyond said axis, the means for retaining the movable jaw in the open condition comprises a slide movable longitudinally in the needle and resiliently urged against said extension of the movable jaw, the means for controlling the opening of the movable jaw comprises a stationary abutment located in the path of said extension of the movable jaw.
Claim 3
Dependent Claim
48 words
A device as in claim 1, in which said abutment is carried by a support pivotable relative to a fixed stop member so as to engage the same when said support is pivoted to a position in which said abutment lies in said path of the jaw extension.
Claim 4
Dependent Claim
34 words
A device as in claim 2, in which said stop is arranged so as to limit the movement of the support in the direction from the interior of the loom laterally towards the exterior.
Claim 5
Dependent Claim
33 words
A device as in claim 2, in which said stop is arranged so as to limit the movement of the support in the direction from the exterior of the loom towards its interior.
Claim 6
Dependent Claim
44 words
A device as claimed in claim 1, in which said means for neutralizing said retaining means comprises a projection on a rod which is movable longitudinally of the needle and is secured to said slide, and a stop in the path of said projection.
Claim 7
Dependent Claim
198 words
A weft-thread passing device for a shuttleless weaving loom comprising a weft-thread pickup needle provided with a clamp having a fixed jaw and a movable jaw urged by resilieNt return means towards the fixed jaw, means for retaining the movable jaw in an open condition, means for neutralizing the said retaining means when the needle reaches a position for catching a weft thread, and means for controlling the opening of the movable jaw when the needle is near the end of its passage out of the shed, in which the movable jaw is pivotable on the fixed jaw about a transverse axis, and has an extension beyond said axis, the means for retaining the movable jaw in the open condition comprises a slide movable longitudinally in the needle and resiliently urged against said extension of the movable jaw, said means for neutralizing said retaining means comprises a projection on a bolt which is movable longitudinally of the needle and is secured to said slide, and a stop in the path of said projection, the means for controlling the opening of the movable jaw comprises a stationary abutment located in the path of said extension of the movable jaw.
Claim 8
Dependent Claim
198 words
A weft-thread passing device for a shuttleless weaving loom comprising a weft-thread pickup needle provided with a clamp having a fixed jaw and a movable jaw urged by resilieNt return means towards the fixed jaw, means for retaining the movable jaw in an open condition, means for neutralizing the said retaining means when the needle reaches a position for catching a weft thread, and means for controlling the opening of the movable jaw when the needle is near the end of its passage out of the shed, in which the movable jaw is pivotable on the fixed jaw about a transverse axis, and has an extension beyond said axis, the means for retaining the movable jaw in the open condition comprises a slide movable longitudinally in the needle and resiliently urged against said extension of the movable jaw, said means for neutralizing said retaining means comprises a projection on a bolt which is movable longitudinally of the needle and is secured to said slide, and a stop in the path of said projection, the means for controlling the opening of the movable jaw comprises a stationary abutment located in the path of said extension of the movable jaw.
Claim 9
Dependent Claim
23 words
A device as claimed in claim 6, in which said extension of the movable jaw has a cam-shaped enlargement for engaging said abutment.
Claim 10
Dependent Claim
30 words
A device as claimed in claim 6, in which said slide has a recess in which said extension of the movable jaw engaged in the open condition of the clamp.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |