US4041988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for weaving an elongated fabric
Assignee: Individual
•
Filing: 1976-04-29
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Granted: 1977-08-16
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Expires: 1996-04-29
Abstract
Abstract A method and apparatus for weaving a continuous fabric having parallel selvedges, including a doubleheaded needle being passed from one side of the shed to the other transversely, forming a weft double pick alternately from one side and the other. The apparatus includes an oscillating shaft moving a pair of arms supporting gripper means adapted to grip the needle on either side of the shed as the needle is being passed through the shed.
Inventors
- 👤 Morris Benzakein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:01
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/42; A44B19/52; A44B19/54; D; D03; D03D; D03D35/00; D03D47/00; D03D47/02; D03D47/40; D03D47/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A method for forming a continuous fabric having parallel edges, including the steps of providing a plurality of warp yarns and inserting alternately from each side of the shed double picks of a pair of weft yarns taken from a stationary weft supply on either side of the shed and interlacing the loops along the edges of the web so formed to form a chain stitch at both edges, providing a pair of mock warp yarns in the shed near one side edge of the web, and locating at least a monofilament, which has been prescored to form a part of a zipper, as a warp adjacent the mock warp yarn inwardly thereof and successively pulling the monofilament through the mock warp yarn and the edge as it is being formed on one side edge thereof.
Claim 2
Independent Claim
136 words
A method for forming a continuous fabric having parallel edges, including the steps of providing a plurality of warp yarns and inserting alternately from each side of the shed double picks of a pair of weft yarns taken from a stationary weft supply on either side of the shed and interlacing the loops along the edges of the web so formed to form a chain stitch at both edges, providing a pair of mock warp yarns in the shed near one side edge of the web, and locating at least a monofilament, which has been prescored to form a part of a zipper, as a warp adjacent the mock warp yarn inwardly thereof and successively pulling the monofilament through the mock warp yarn and the edge as it is being formed on one side edge thereof.
Claim 3
Dependent Claim
82 words
A method as defined in claim 1, wherein a first weft yarn is picked from one side of the shed, passed transversely through the shed to form a loop on the opposite side of the shed and successively a second weft yarn is picked from the other side of the shed through the loop formed by the first weft yarn and brought transversely across the shed to the first side of the shed to form a loop, and the cycle is repeated.
Claim 4
Dependent Claim
34 words
A method as defined in claim 1, wherein two monofilaments are located as warp yarns, and each is pulled alternatively through the one side edge of the web to form part of a zipper.
Claim 5
Independent Claim
141 words
An apparatus for weaving a continuous web of fabric having parallel side edges, including a double headed latch needle, a first gripper means on one side of the shed path for gripping the needle, and passing said needle transversly through the shed while it is pulling a first weft pick, second gripping means on the other side of the shed for gripping the needle as the needle passes through the shed and withdrawing the needle from the shed, means for actuating said first gripper means to release the needle, means for reversing the travel of the needle and simultaneously picking up a second weft pick while releasing the first weft pick, said second gripping means passing the needle transversely through the shed in the opposite direction while pulling the second weft pick through the loop formed by the first weft pick.
Claim 6
Independent Claim
141 words
An apparatus for weaving a continuous web of fabric having parallel side edges, including a double headed latch needle, a first gripper means on one side of the shed path for gripping the needle, and passing said needle transversly through the shed while it is pulling a first weft pick, second gripping means on the other side of the shed for gripping the needle as the needle passes through the shed and withdrawing the needle from the shed, means for actuating said first gripper means to release the needle, means for reversing the travel of the needle and simultaneously picking up a second weft pick while releasing the first weft pick, said second gripping means passing the needle transversely through the shed in the opposite direction while pulling the second weft pick through the loop formed by the first weft pick.
Claim 7
Dependent Claim
68 words
An apparatus as defined in claim 4, wherein said first gripper means in actuated to grip the needle as it is passed through the shed transversely by means of the second gripper means, means for successively releasing the second gripper means from the needle, means for actuating the first gripper means to pass the needle completely through the shed to form a loop with the second weft pick.
Claim 8
Dependent Claim
81 words
An apparatus as defined in claim 5, wherein the first and second gripper means each include a carriage adapted to be moved to and from the shed path respectively on either side thereof, the carriage including a sliding slot in which a spring-urged gripper is urged forward towards a transversely extending recess in the carriage adapted to receive a needle, and cam-operated means are provided for actuating the sliding gripper to release the needle and to grip the needle when necessary.
Claim 9
Dependent Claim
41 words
An apparatus as defined in claim 6, wherein a second transverse slot is provided on the carriage for holding a needle having hooks at only one end thereof to pick the monofilament to form a loop of a performed zipper member.
Claim 10
Dependent Claim
95 words
An apparatus as defined in claim 6, wherein an upright oscillating shaft is provided below the shed path, a first arm connected to the shaft and mounting a first gripper means including the carriage thereof, a second arm connected to the shaft and mounting the second gripper means including the carriage thereof, cam means for moving the arms vertically as the shaft is being osicllated so that the carriages including the gripper means can move below the shed path when the respective gripper means are not carrying the needle as the shaft is being osicllated.
Claim 11
Dependent Claim
50 words
An apparatus as defined in claim 8, wherein cam means are fixed to a frame for controlling the regular movement of the carriages which are in turn pivoted to the respective arms, while the carriages are both gripping the needle momentarily and parallel to the edges of the shed path.
References Cited (Backward Citations)
DE126709C
Cited
FR871535A
Cited
US2670012A
Cited
DE1945315A1
Cited
US3847188A
Cited
US3871420A
Cited
DD126709A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |