Patent US3705608A successfully refreshed from Google Patents.
US3705608A
Expired / Lapsed
US
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Method for transporting a weft thread through a weaving shed and a loom for performing said method
Assignee: Individual
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Filing: 1970-10-22
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Granted: 1972-12-12
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Expires: 1990-10-22
Abstract
Abstract A method and apparatus for transporting a weft thread through a weaving shed, by discharging a plurality of aligned jets of transport fluid at points spaced along the shed, the jets being energized successively, in time with the advancement of the leading end of the weft thread, to cause the jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed.
Inventors
- 👤 Geert Jan Vermeulen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/30; D03D47/3026; D03D47/3033; D03D47/304
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
A method of transporting a weft thread through a weaving shed by discharging a plurality of aligned jets of transport fluid at points spaced along the shed, wherein the improvement comprises the steps of energizing the jets successively, in time with the advancement of the leading end of the weft thread, to cause the jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed.
Claim 2
Independent Claim
74 words
A method of transporting a weft thread through a weaving shed by discharging a plurality of aligned jets of transport fluid at points spaced along the shed, wherein the improvement comprises the steps of energizing the jets successively, in time with the advancement of the leading end of the weft thread, to cause the jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed.
Claim 3
Dependent Claim
43 words
A method according to claim 1 comprising the steps of progressively reducing the amount of fluid discharged in the jets so that the flow of fluid in each jet is reduced as the leading end of the weft thread approaches a succeeding jet.
Claim 4
Dependent Claim
27 words
A method according to claim 2 wherein the reduction in the amount of fluid discharged in each jet is performed after a succeeding jet has been energized.
Claim 5
Independent Claim
67 words
A method of transporting a weft thread through a weaving shed by discharging a plurality of aligned jets of transport fluid at points spaced along the shed, wherein the improvement comprises the steps of progressively reducing the amount of fluid discharged in the jets so that the flow of fluid in each jet is reduced as the leading end of the weft thread approaches a succeeding jet.
Claim 6
Independent Claim
67 words
A method of transporting a weft thread through a weaving shed by discharging a plurality of aligned jets of transport fluid at points spaced along the shed, wherein the improvement comprises the steps of progressively reducing the amount of fluid discharged in the jets so that the flow of fluid in each jet is reduced as the leading end of the weft thread approaches a succeeding jet.
Claim 7
Dependent Claim
79 words
Apparatus for transporting a weft thread through a weaving shed, including a plurality of spaced aligned nozzles arranged to discharge a transport fluid in the same direction to transport a weft thread, wherein the improvement comprises mechanism which energizes the nozzles successively, in time with the advancement of the leading end of the weft thread, to cause the resulting jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed.
Claim 8
Dependent Claim
79 words
Apparatus for transporting a weft thread through a weaving shed, including a plurality of spaced aligned nozzles arranged to discharge a transport fluid in the same direction to transport a weft thread, wherein the improvement comprises mechanism which energizes the nozzles successively, in time with the advancement of the leading end of the weft thread, to cause the resulting jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed.
Claim 9
Dependent Claim
87 words
Apparatus according to claim 5 wherein the improvement comprises mechanism which energizes the nozzles successively, in time with the advancement of the leading end of the weft thread, to cause the resulting jets to entrain the leading end of the weft thread progressively and thereby draw the weft thread through the shed and which progressively reduces the amount of fluid discharged from the nozzles so that the flow of fluid from each nozzle is reduced as the leading end of the weft thread approaches a succeeding nozzle.
Claim 10
Dependent Claim
69 words
Apparatus according to claim 6 wherein the mechanism which energizes the nozzles comprises a source for supplying a transport fluid under pressure, a valve which connects each of the nozzles to such source, and pilot mechanism which connects each valve after the first valve to the valve for a preceding nozzle and which causes each valve to open momentarily, after the opening of the valve for such preceding nozzle.
Claim 11
Dependent Claim
71 words
Apparatus for transporting a weft thread through a weaving shed, including a plurality of spaced aligned nozzles arranged to discharge a transport fluid in the same direction to transport a weft thread, wherein the improvement comprises mechanism which progressively reduces the amount of fluid discharged from the nozzles so that the flow of fluid from each nozzle is reduced as the leading end of the weft thread approaches a succeeding nozzle.
Claim 12
Dependent Claim
71 words
Apparatus for transporting a weft thread through a weaving shed, including a plurality of spaced aligned nozzles arranged to discharge a transport fluid in the same direction to transport a weft thread, wherein the improvement comprises mechanism which progressively reduces the amount of fluid discharged from the nozzles so that the flow of fluid from each nozzle is reduced as the leading end of the weft thread approaches a succeeding nozzle.
References Cited (Backward Citations)
US3229725A
Cited
US3465791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |