EP0184435A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multi-nozzle weft insertion device for fluid jet shuttleless-loom
Assignee: Tsudakoma Corp
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Filing: 1985-12-04
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Granted: —
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Expires: 2005-12-04
Abstract
Abstract @ A weft insertion device of a fluid jet shuttleless loom, said device comprising a plurality of fixed weft insertion nozzles (1',1"), each nozzle (1',1"), having a jet orifice, at least one of the jet orifices being arranged to discharge weft (y) in a direction which is offset from a given line (ℓ-ℓ) corresponding to the intended line of sight of the weft path (g); and a weft guide (2c) provided adjacent said at least one of the jet orifices, said weft guide (2c) having a streamlined surface shaped so that weft (y) discharged from said at least one of the jet orifices in use is diverted from said direction to travel along said given line as a result of boundary-layer flow over said streamlined surface.
Inventors
- 👤 Yujiro Takekawa
- 👤 Fumio Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:13
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/30; D03D47/3006; D03D47/3013; D03D47/3026; D03D47/3033; D03D47/3046; D03D47/34; D03D47/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A weft insertion device of a fluid jet shuttleless-loom, said device comprising a plurality of nozzles, each nozzle having a jet orifice; and a streamlined weft guide provided at the jet orifice of at least one of said nozzles such that the weft discharged from such nozzle moves along the boundary-layer flow formed on the streamlined wall surface of said weft guide and is blown gradually nearer to the line of sight of the weft path.
Claim 2
Dependent Claim
76 words
A weft insertion device of a fluid jet shuttleless-loom, said device comprising a plurality of nozzles, each nozzle having a jet orifice; and a streamlined weft guide provided at the jet orifice of at least one of said nozzles such that the weft discharged from such nozzle moves along the boundary-layer flow formed on the streamlined wall surface of said weft guide and is blown gradually nearer to the line of sight of the weft path.
Claim 3
Dependent Claim
40 words
A device as claimed in claim 1, comprising a conoid streamlined weft guide provided at the centre of said plurality of nozzles which are disposed so that their axes are substantially parallel with the line of sight of the weft-path.
Claim 4
Dependent Claim
25 words
A device as claimed in claim 1, having two nozzles, wherein the streamlined weft guide is of sheet-like form and is disposed between said nozzles.
Claim 5
Independent Claim
34 words
A device as claimed in any one of claims 1 to 3, comprising a partition wing attached at the jet orifice of at least one nozzle to control the fluid diffusion of the jet.
Claim 6
Independent Claim
65 words
A device as claimed in any one of claims 1 to 3 comprising at least one partition wing attached to the jet orifice of at least one nozzle to control the fluid diffusion of a jet, and weft guides having different shapes and/or streamline curvatures according to the distance between the jet orifice of the particular nozzle and the line of sight of the weft-path.
Claim 7
Dependent Claim
117 words
A weft insertion device of a fluid jet shuttleless loom, said device comprising a plurality of fixed weft insertion nozzles, each nozzle having a jet orifice, at least one of the jet orifices being arranged to discharge weft in a direction which is offset from a given line corresponding to the intended line of sight of the weft path; and a weft guide provided adjacent said at least one of the jet orifices, said weft guide having a streamlined surface shaped so that weft discharged from said at least one of the jet orifices in use is diverted from said direction to travel along said given line as a result of boundary-layer flow over said streamlined surface.
Claim 8
Dependent Claim
117 words
A weft insertion device of a fluid jet shuttleless loom, said device comprising a plurality of fixed weft insertion nozzles, each nozzle having a jet orifice, at least one of the jet orifices being arranged to discharge weft in a direction which is offset from a given line corresponding to the intended line of sight of the weft path; and a weft guide provided adjacent said at least one of the jet orifices, said weft guide having a streamlined surface shaped so that weft discharged from said at least one of the jet orifices in use is diverted from said direction to travel along said given line as a result of boundary-layer flow over said streamlined surface.
Claim 9
Dependent Claim
18 words
A fluid jet shuttleless loom including at least one weft insertion device as claimed in any preceding claim.
References Cited (Backward Citations)
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