US4190067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for insertion of weft threads in jet weaving machines
Assignee: Vyzkumny a Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi
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Filing: 1977-08-30
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Granted: 1980-02-26
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Expires: 1997-08-30
Abstract
Abstract A method and arrangement for picking a weft thread by means of a weft thread inserting comb in a jet loom. The comb is composed of a plurality of juxtaposed comb members which are mounted on a reciprocating slay of the jet loom. Each comb member has a pair of shank portions which define a weft inserting opening and an unthreading channel. The comb members, when in their operative positions, define a weft inserting channel. At least one of the comb members has secondary carrying fluid conduit means which directs via an outlet a stream of a secondary carrying fluid into a zone of said weft inserting channel which is disposed below the axis of the channel relative to the unthreading channels of the comb.
Inventors
- 👤 Vladimir Kuda
- 👤 Vladimir Vasicek
- 👤 Borivoj Suchanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:46
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/30; D03D47/3006; D03D47/302; D03D47/27; D03D47/277; D03D47/278
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
304 words
In a jet loom having a nozzle adapted to direct a stream of a fluid pressure medium through a horizontally disposed weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking a weft thread therethrough, the improvement comprising, a comb made up of a plurality of juxtaposed comb members operatively mounted on the slay, each comb member having a pair of shank portions, the comb members each defining a weft inserting opening and the free ends of said shank portions define an unthreading channel having an inlet opening and communicating the weft inserting opening with the exterior of the comb; the weft inserting openings through the comb members defining a horizontal picking path for the weft threads, at least one of said plurality of comb members having at least one secondary carrying fluid conduit means having an outlet adjacent to one of the free ends of the shank portions; the axis extending through the weft inserting openings of the plurality of comb members and an imaginary line passing through the midpoints of the inlet openings of the unthreading channels of the comb members define a first plane, a rectangular projection of the axis of said secondary carrying fluid conduit outlet on said first plane forming with the axis extending through the weft inserting openings an angle ranging from 5°-30°, said secondary carrying fluid conduit having an outlet adjacent to each free end of the pair of shank portions, the axes of said pair of outlets mutually intersecting each other at a point located below the weft thread being inserted and below a second plane, relative to the unthreading channel, said second plane being parallel to said axis extending through the weft inserting openings and passes through the central axes of said pair of outlets.
Claim 2
Dependent Claim
304 words
In a jet loom having a nozzle adapted to direct a stream of a fluid pressure medium through a horizontally disposed weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking a weft thread therethrough, the improvement comprising, a comb made up of a plurality of juxtaposed comb members operatively mounted on the slay, each comb member having a pair of shank portions, the comb members each defining a weft inserting opening and the free ends of said shank portions define an unthreading channel having an inlet opening and communicating the weft inserting opening with the exterior of the comb; the weft inserting openings through the comb members defining a horizontal picking path for the weft threads, at least one of said plurality of comb members having at least one secondary carrying fluid conduit means having an outlet adjacent to one of the free ends of the shank portions; the axis extending through the weft inserting openings of the plurality of comb members and an imaginary line passing through the midpoints of the inlet openings of the unthreading channels of the comb members define a first plane, a rectangular projection of the axis of said secondary carrying fluid conduit outlet on said first plane forming with the axis extending through the weft inserting openings an angle ranging from 5°-30°, said secondary carrying fluid conduit having an outlet adjacent to each free end of the pair of shank portions, the axes of said pair of outlets mutually intersecting each other at a point located below the weft thread being inserted and below a second plane, relative to the unthreading channel, said second plane being parallel to said axis extending through the weft inserting openings and passes through the central axes of said pair of outlets.
Claim 3
Dependent Claim
97 words
In a jet loom having a nozzle adapted to direct a stream of fluid pressure medium through a weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking a weft thread therethrough, the improvement as set forth in claim 1, wherein said secondary carrying fluid conduit has a plurality of outlets of both shank portions being symmetrically disposed relative to each other and form pairs of symmetrically disposed outlets, said second plane passing through the centers of the pair of outlets most distant from said unthreading channel.
Claim 4
Dependent Claim
66 words
In a jet loom having a nozzle adapted to direct a stream of fluid pressure medium through a weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking weft thread therethrough, the improvement as set forth in claim 2, wherein the axes of all of said pairs of outlets intersect each other in said first plane.
Claim 5
Dependent Claim
191 words
In an apparatus for picking a weft thread through a weft inserting comb in a jet loom by means of a stream of a fluid pressure medium, flowing forwardly from a nozzle through a horizontally disposed comb, wherein said comb is cyclically moved into the shed formed by the warp threads, the improvement wherein said comb includes a plurality of juxtaposed apertured comb members defining a horizontal picking path for the weft thread, each comb member having a pair of shank portions which define an unthreading channel therebetween, at least one comb member having secondary carrying fluid outlet means in each shank portion, said outlet means having axes mutually intersecting at a point below the picking path of the weft thread for respectively directing downwardly and forwardly beneath the weft thread at the leading portion of the weft thread passing through each of the openings of the comb members a stream of a secondary carrying fluid in a zone of the openings of the comb members which is spaced from and disposed opposite from said unthreading channels and which is substantially equidistant from said fluid outlet means in each shank portion.
Claim 6
Dependent Claim
191 words
In an apparatus for picking a weft thread through a weft inserting comb in a jet loom by means of a stream of a fluid pressure medium, flowing forwardly from a nozzle through a horizontally disposed comb, wherein said comb is cyclically moved into the shed formed by the warp threads, the improvement wherein said comb includes a plurality of juxtaposed apertured comb members defining a horizontal picking path for the weft thread, each comb member having a pair of shank portions which define an unthreading channel therebetween, at least one comb member having secondary carrying fluid outlet means in each shank portion, said outlet means having axes mutually intersecting at a point below the picking path of the weft thread for respectively directing downwardly and forwardly beneath the weft thread at the leading portion of the weft thread passing through each of the openings of the comb members a stream of a secondary carrying fluid in a zone of the openings of the comb members which is spaced from and disposed opposite from said unthreading channels and which is substantially equidistant from said fluid outlet means in each shank portion.
Claim 7
Independent Claim
188 words
A method of picking a weft thread through a weft inserting comb in a jet loom by means of a stream of a fluid pressure medium, flowing forwardly from a nozzle through a horizontally disposed comb, wherein said comb is cyclically moved into the shed formed by the warp threads, and wherein said comb includes a plurality of juxtaposed apertured comb members defining a horizontal picking path for the weft thread, each comb member having a pair of shank portions which define an unthreading channel therebetween, at least one comb member having secondary carrying fluid outlet means in each shank portion, the improvement comprising the step of directing downwardly and forwardly along paths which intersect beneath the path of the weft thread streams of a secondary carrying fluid via said outlet means in a zone of the openings of the comb members which is spaced from and disposed opposite from said unthreading channels and which is substantially equidistant from said fluid outlet means in each shank portion so as to contact the leading portion of the weft thread passing through each of the openings of the comb members.
Claim 8
Independent Claim
188 words
A method of picking a weft thread through a weft inserting comb in a jet loom by means of a stream of a fluid pressure medium, flowing forwardly from a nozzle through a horizontally disposed comb, wherein said comb is cyclically moved into the shed formed by the warp threads, and wherein said comb includes a plurality of juxtaposed apertured comb members defining a horizontal picking path for the weft thread, each comb member having a pair of shank portions which define an unthreading channel therebetween, at least one comb member having secondary carrying fluid outlet means in each shank portion, the improvement comprising the step of directing downwardly and forwardly along paths which intersect beneath the path of the weft thread streams of a secondary carrying fluid via said outlet means in a zone of the openings of the comb members which is spaced from and disposed opposite from said unthreading channels and which is substantially equidistant from said fluid outlet means in each shank portion so as to contact the leading portion of the weft thread passing through each of the openings of the comb members.
Claim 9
Dependent Claim
267 words
In a jet loom having a nozzle adapted to direct a stream of a fluid pressure medium through a horizontally disposed weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking a weft through therethrough, the improvement comprising, a comb made up of a plurality of juxtaposed comb members operatively mounted on the slay, each comb member having a pair of shank portions, the comb members each defining a weft inserting opening and the free ends of said shank portions define an unthreading channel having an inlet opening and communicating the weft inserting opening with the exterior of the comb; the weft inserting opening through the comb members defining a horizontal picking path for the weft threads, at least one of said plurality of comb members having at least one secondary carrying fluid conduit means having an outlet adjacent to one of the free ends of the shank portions; the axis extending through the weft inserting openings of the plurality of comb members and an imaginary line passing through the midpoints of the inlet openings of the unthreading channels of the comb members define a first plane, a rectangular projection of the axis of said secondary carrying fluid conduit outlet on said first plane forming with the axis extending through the weft inserting openings an angle ranging from 5°-30°, wherein streams of secondary carrying fluid issue from the openings in the shank portions of said one comb member, and said streams of secondary carrying fluid intersect at a location beneath the weft thread travelling through the comb.
Claim 10
Dependent Claim
267 words
In a jet loom having a nozzle adapted to direct a stream of a fluid pressure medium through a horizontally disposed weft inserting comb which is cyclically moved by a slay into the shed formed by the warp threads thereby picking a weft through therethrough, the improvement comprising, a comb made up of a plurality of juxtaposed comb members operatively mounted on the slay, each comb member having a pair of shank portions, the comb members each defining a weft inserting opening and the free ends of said shank portions define an unthreading channel having an inlet opening and communicating the weft inserting opening with the exterior of the comb; the weft inserting opening through the comb members defining a horizontal picking path for the weft threads, at least one of said plurality of comb members having at least one secondary carrying fluid conduit means having an outlet adjacent to one of the free ends of the shank portions; the axis extending through the weft inserting openings of the plurality of comb members and an imaginary line passing through the midpoints of the inlet openings of the unthreading channels of the comb members define a first plane, a rectangular projection of the axis of said secondary carrying fluid conduit outlet on said first plane forming with the axis extending through the weft inserting openings an angle ranging from 5°-30°, wherein streams of secondary carrying fluid issue from the openings in the shank portions of said one comb member, and said streams of secondary carrying fluid intersect at a location beneath the weft thread travelling through the comb.
References Cited (Backward Citations)
US3139118A
Cited
US3847187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |