US3744533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustment of filling tension in fluid jet loom and apparatus thereof
Assignee: Teijin Ltd
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Filing: 1971-08-03
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Granted: 1973-07-10
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Expires: 1991-08-03
Abstract
Abstract Filling yarn tension adjusting apparatus for use in a fluid jet loom including a suction jet established outside the selvage on one side of the fell of cloth to receive the tip of a projected filling yarn with substantially constant tension, the suction jet being movable along with a reed of the loom to permit beating without bending or varying the tension in the filling yarn. The sucking of the filling yarn with a substantially constant tension permits the use of a detector device for mechanically sensing the presence of the filling yarn and a control device for timing the cutting of the filling yarn. In one modification, the suction jet forms a guidance path for initially sucking the tip of the filling yarn and cooperates with a surrounding tension path at an annular opening to provide constant tension of the filling yarn.
Inventors
- 👤 S Yano
- 👤 S Hosono
- 👤 K Kida
- 👤 S Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:00
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/30; D03D47/3066; D03D47/308; D03D47/3073
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
240 words
Filling yarn tension adjusting apparatus for use in a fluid jet loom of the type projecting a filling yarn in a flying line through a shed from a first side of the fell of cloth to a second side of the fell of cloth at which a selvage is formed and including a reed movable for beating the cloth, said apparatus comprising suction means carried by the reed outside the selvage on the second side of the fell of cloth, said suction means including an exhaust port and an intake port establishing a fluid jet stream movable with the reed in a path transversely crossing the flying line of the filling yarn, said fluid jet stream being exposed between said exhaust and intake ports to form a suction jet sucking in the tip of the filling yarn such that the filling yarn is afloat and extended along the flying line and is moved for beating without bending under substantially constant tension, said intake port having a cross-sectional area greater than the cross-sectional area of said exhaust port, and said suction means including means forming a path downstream of said intake port having a cross-sectional area of at least a portion thereof less than the cross-sectional area of said intake portion whereby said suction jet is substantially entirely received in said intake port and said jet is continuous in the same direction to encircle the tip of the sucked filling yarn.
Claim 2
Dependent Claim
240 words
Filling yarn tension adjusting apparatus for use in a fluid jet loom of the type projecting a filling yarn in a flying line through a shed from a first side of the fell of cloth to a second side of the fell of cloth at which a selvage is formed and including a reed movable for beating the cloth, said apparatus comprising suction means carried by the reed outside the selvage on the second side of the fell of cloth, said suction means including an exhaust port and an intake port establishing a fluid jet stream movable with the reed in a path transversely crossing the flying line of the filling yarn, said fluid jet stream being exposed between said exhaust and intake ports to form a suction jet sucking in the tip of the filling yarn such that the filling yarn is afloat and extended along the flying line and is moved for beating without bending under substantially constant tension, said intake port having a cross-sectional area greater than the cross-sectional area of said exhaust port, and said suction means including means forming a path downstream of said intake port having a cross-sectional area of at least a portion thereof less than the cross-sectional area of said intake portion whereby said suction jet is substantially entirely received in said intake port and said jet is continuous in the same direction to encircle the tip of the sucked filling yarn.
Claim 3
Dependent Claim
67 words
The apparatus as recited in claim 1 wherein said suction means includes supply meanS supplying fluid in a first path to said exhaust port and in a second path, and said means forming a path downstream of said intake port includes first means receiving said fluid from said first path and second means defining an annular opening around said first means receiving fluid from said second path.
Claim 4
Dependent Claim
96 words
The apparatus as recited in claim 1 wherein said suction means includes first means forming a guidance path for the filling yarn and second means forming a tension path for the filling yarn, said first means including said suction jet formed by said exhaust and intake ports and said path forming means downstream of said intake port and said second means including an outlet port having an opening disposed more than halfway around said path forming means to issue fluid in said tension path in substantially the same direction as said fluid in said guidance path.
Claim 5
Dependent Claim
63 words
The apparatus as recited in claim 1 and further comprising detector means disposed between the selvage on the second side of the fell of cloth and said suction means, said detector means including a member for contacting the filling yarn during beating, said detector means providing a signal for stopping the loom when the member fails to contact a filling yarn during beating.
Claim 6
Dependent Claim
66 words
The apparatus as recited in claim 1 and further comprising cutting means and stopper means disposed between the selvage on the second side of the fell of cloth and said suction means opposite the reed, said cutting means being disposed closer to the selvage and said stopper means and said cutting means being relatively adjustable to adjust cutting of the filling yarn with respect to beating.
Claim 7
Dependent Claim
154 words
Filling yarn tension adjusting apparatus for use in a fluid jet loom of the type projecting a filling yarn in a flying line through a shed from a first side of the fell of cloth to a second side of the fell of cloth at which a selvage is formed, said apparatus comprising suction means movably disposed on the second side of the fell of cloth outside the selvage, said suction means including water supply means, an exhaust port communicating with said water supply means to provide an exposed water suction jet, an intake port having a cross-sectional area greater than the cross-sectional area of said exhaust port for receiving said water suction jet, and means movably mounting said suction means to move said water suction jet in a path transversely crossing the flying line of the filling yarn whereby the filling yarn is sucked into said water suction jet with substantially constant tension.
Claim 8
Dependent Claim
154 words
Filling yarn tension adjusting apparatus for use in a fluid jet loom of the type projecting a filling yarn in a flying line through a shed from a first side of the fell of cloth to a second side of the fell of cloth at which a selvage is formed, said apparatus comprising suction means movably disposed on the second side of the fell of cloth outside the selvage, said suction means including water supply means, an exhaust port communicating with said water supply means to provide an exposed water suction jet, an intake port having a cross-sectional area greater than the cross-sectional area of said exhaust port for receiving said water suction jet, and means movably mounting said suction means to move said water suction jet in a path transversely crossing the flying line of the filling yarn whereby the filling yarn is sucked into said water suction jet with substantially constant tension.
Claim 9
Dependent Claim
57 words
The apparatus as recited in claim 6 wherein the fluid jet loom includes a reed, said support means mounts said suction means on the reed for movement therewith to permit beating without bending the filling yarn, and said suction means includes a conduit having a notch formed therein to define said exhaust port and said intake port.
Claim 10
Dependent Claim
65 words
The apparatus as recited in claim 7 wherein said water supply means includes a first path supplying water to said exhaust port and a second path and means downstream of said intake port defining an inner outlet receiving said water suction jet from said first path and an outer outlet surrounding said inner outlet to form an annular opening receiving water from said second path.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |