US3741256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the production of intermediate selvages in fabric webs
Assignee: Individual
•
Filing: 1971-12-28
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Granted: 1973-06-26
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Expires: 1991-12-28
Abstract
Abstract The device includes a tubular shaft cut open in its central portion to form a guide for the warp thread or threads passing through the open portion of the tubular shaft. The tubular shaft forms a support for a pair of oscillatable shafts extending toward each other, and each carrying a pair of needles so that the two pairs of needles face in opposite directions. The needles of a pair are arranged on respective opposite sides of a plane passing through a warp thread of a loom and perpendicular to the fabric web, and the device moves up and down in synchronism with the shed movement of the loom. The shafts oscillate the needles in the plane, relative to the warp thread, to form the selvage.
Inventors
- 👤 B Wesseler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:54
CPC Classifications
D; D03; D03C; D03C7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
187 words
A device for producing intermediate selvages in fabric webs by tying at least one stationary warp thread of a fabric web to weft threads intersecting the stationary warp thread, said device comprising, in combination, at least one pair of needles with each needle carrying a respective crossing thread and with the respective needles arranged on respective opposite sides of a plane passing through a stationary warp thread, of a loom, perpendicular to a fabric web of the loom; means mounting said needles for conjoint movement up and down in synchronism with the shed movement of the loom; means operable to oscillate said needles about an axis in said plane relative to said stationary thread to position the respective crossing threads alternately on opposite sides of the stationary thread; a tubular shaft, having an axial bore, oscillatably supporting each pair of needles; and means mounting said shaft for movement up and down bodily with the shed movement of the loom; the central portion of said tubular shaft being cut open to provide a guide for at least one stationary thread to extend substantially diametrically through said tubular shaft.
Claim 2
Independent Claim
187 words
A device for producing intermediate selvages in fabric webs by tying at least one stationary warp thread of a fabric web to weft threads intersecting the stationary warp thread, said device comprising, in combination, at least one pair of needles with each needle carrying a respective crossing thread and with the respective needles arranged on respective opposite sides of a plane passing through a stationary warp thread, of a loom, perpendicular to a fabric web of the loom; means mounting said needles for conjoint movement up and down in synchronism with the shed movement of the loom; means operable to oscillate said needles about an axis in said plane relative to said stationary thread to position the respective crossing threads alternately on opposite sides of the stationary thread; a tubular shaft, having an axial bore, oscillatably supporting each pair of needles; and means mounting said shaft for movement up and down bodily with the shed movement of the loom; the central portion of said tubular shaft being cut open to provide a guide for at least one stationary thread to extend substantially diametrically through said tubular shaft.
Claim 3
Dependent Claim
88 words
A device for producing intermediate selvages in fabric webs, as claimed in claim 1, in which there are two pairs of needles, the points of one pair of needles facing opposite to the points of the other pair of needles; each pair of needles being designed as a fork; a respective axle shaft secured to each fork and guided in said bore of said first-mentioned shaft; said means operable to oscillate said needles comprising respective driving devices each connected by a respective transmission to a respective axle shaft.
Claim 4
Dependent Claim
45 words
A device for producing intermediate selvages in woven fabric, as claimed in claim 2, in which said means operable to oscillate said needles comprises a respective geAr on the outer end of each axle shaft; and a respective reciprocable rack meshing with each respective gear.
Claim 5
Dependent Claim
25 words
A device for producing intermediate selvages in fabric webs, as claimed in claim 3, including respective electromagnetic driving means operatively associated with each respective rack.
Claim 6
Dependent Claim
200 words
In a device for producing intermediate selvages in fabric webs by using crossing threads to tie a warp thread into weft threads intersecting the warp thread and of the type including at least a pair of needles each carrying a respective crossing thread, means moving needles back and forth laterally relative to a warp thread, and means moving the needles up and down relative to a fabric web, the improvement comprising means mounting each pair of needles for movement up and down, parallel to the length of the needles, relative to a fabric web and a warp thread; means operable to oscillate each pair of needles about an axis, extending intermediate and parallel to the needles of the pair, and lying in the plane including the warp thread and perpendicular to the plane of the fabric web, to position the respective crossing threads alternately on opposite sides of the warp thread; each pair of needles being designed as a fork, with two such forks being arranged in aligned opposing relation to each other on opposite sides of the warp thread; said moving means moving the assembly of the two forks bodily up and down with the shed of the loom.
Claim 7
Dependent Claim
200 words
In a device for producing intermediate selvages in fabric webs by using crossing threads to tie a warp thread into weft threads intersecting the warp thread and of the type including at least a pair of needles each carrying a respective crossing thread, means moving needles back and forth laterally relative to a warp thread, and means moving the needles up and down relative to a fabric web, the improvement comprising means mounting each pair of needles for movement up and down, parallel to the length of the needles, relative to a fabric web and a warp thread; means operable to oscillate each pair of needles about an axis, extending intermediate and parallel to the needles of the pair, and lying in the plane including the warp thread and perpendicular to the plane of the fabric web, to position the respective crossing threads alternately on opposite sides of the warp thread; each pair of needles being designed as a fork, with two such forks being arranged in aligned opposing relation to each other on opposite sides of the warp thread; said moving means moving the assembly of the two forks bodily up and down with the shed of the loom.
Claim 8
Dependent Claim
256 words
In a device for producing intermediate selvages in fabric webs by using crossing threads to tie a warp thread into weft threads intersecting the warp thread, and of the type including at least a pair of needles each carrying a respective crossing thread, means moving the needles back and forth laterally relative to a warp thread, and means moving the needles up and down relative to a fabric web, the improvement comprising means mounting each pair of needles for movement up and down, parallel to the length of the needles, relative to a fabric web and a warp thread; means operable to oscillate each pair of needles about an axis, extending intermediate and parallel to the needles of the pair, and lying in the plane including the warp thread and perpendicular to the plane of the fabric web, to position the respective crossing threads alternately on opposite sides of the warp thread; each pair of needles being designed as a fork, with two such forks being arranged in opposing relation to each other; said moving means moving the assembly of the two forks bodily up and down with the shed of the loom; each fork having a respective stem extending therefrom; a shaft mounting said forks and formed with a bore receiving said stems to project outwardly from respective opposite ends of said shafts; said oscillating means including respective gear means, each including a rack, operatively connected to the outer ends of said stems; and driving means operable to reciprocate said racks to oscillate said forks.
Claim 9
Dependent Claim
256 words
In a device for producing intermediate selvages in fabric webs by using crossing threads to tie a warp thread into weft threads intersecting the warp thread, and of the type including at least a pair of needles each carrying a respective crossing thread, means moving the needles back and forth laterally relative to a warp thread, and means moving the needles up and down relative to a fabric web, the improvement comprising means mounting each pair of needles for movement up and down, parallel to the length of the needles, relative to a fabric web and a warp thread; means operable to oscillate each pair of needles about an axis, extending intermediate and parallel to the needles of the pair, and lying in the plane including the warp thread and perpendicular to the plane of the fabric web, to position the respective crossing threads alternately on opposite sides of the warp thread; each pair of needles being designed as a fork, with two such forks being arranged in opposing relation to each other; said moving means moving the assembly of the two forks bodily up and down with the shed of the loom; each fork having a respective stem extending therefrom; a shaft mounting said forks and formed with a bore receiving said stems to project outwardly from respective opposite ends of said shafts; said oscillating means including respective gear means, each including a rack, operatively connected to the outer ends of said stems; and driving means operable to reciprocate said racks to oscillate said forks.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |