US3657904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding clasp fastener stringers
Assignee: Lightning Fasteners Ltd
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Filing: 1970-07-06
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Granted: 1972-04-25
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Expires: 1990-07-06
Abstract
Abstract A slide fastener stringer comprising a knitted tape and a series of coupling elements secured thereto during knitting by an auxiliary sewing thread.
Inventors
- 👤 Christopher Frederic Austin
- 👤 David Warren
- 👤 David Howitt
- 👤 Philip Simpson Crowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:20
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/42; A44B19/52; A44B19/56; D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; D04B23/00; D04B23/14; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/063; D10B2501/0631
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
A method of making a sliding clasp fastener stringer comprising warp-knitting a carrier tape and, during knitting, locating a series of interconnected coupling elements at one face of the tape and adjacent a longitudinal edge of the tape as it is knitted, passing a binding thread by reciprocating movement of a sewing needle between adjacent coupling elements of the series to form a stitch loop at the other face of the knitted tape beyond the hooked end of a knitting needle employed in knitting the tape, and moving the hook of the knitting needle through the stitch loop so that the hook engages the loop and interlinks the loop with a yarn of the knitted tape.
Claim 2
Independent Claim
116 words
A method of making a sliding clasp fastener stringer comprising warp-knitting a carrier tape and, during knitting, locating a series of interconnected coupling elements at one face of the tape and adjacent a longitudinal edge of the tape as it is knitted, passing a binding thread by reciprocating movement of a sewing needle between adjacent coupling elements of the series to form a stitch loop at the other face of the knitted tape beyond the hooked end of a knitting needle employed in knitting the tape, and moving the hook of the knitting needle through the stitch loop so that the hook engages the loop and interlinks the loop with a yarn of the knitted tape.
Claim 3
Dependent Claim
95 words
A method according to claim 1 wherein the sewing needle is caused to move in the lapping sense of the yarn guides of the machine when the sewing needle is at the front of the machine and between its reciprocating movements to effect a zig-zag pattern of binding thread on the face of the coupling elements remote from the tape and two series of laterally spaced stitch loops on the other face of the tape, one series being engaged by a first knitting needle and the second series being engaged by a second knitting needle.
Claim 4
Dependent Claim
17 words
A method according to claim 1 wherein the series of coupling elements is of coil fastener construction.
Claim 5
Dependent Claim
17 words
A method according to claim 1 wherein the series of coupling elements is of meander fastener construction.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein a cord or braid is disposed between arms of the coupling elements and extends longitudinally of the series of elements.
Claim 7
Dependent Claim
29 words
A method according to claim 1 wherein the series of coupling elements is guided through a tubular guide to its position adjacent an edge of the tape being knitted.
Claim 8
Dependent Claim
164 words
A warp-knitting machine for making a sliding clasp fastener stringer, the machine having a knitting zone and comprising a row of knitting needles for knitting a carrier tape of the stringer, a plurality of guide bars each carrying yarn guides, a tubular guide having a lower end disposed to guide a series of interconnected coupling elements to a predetermined position in the knitting zone adjacent one end of the row of knitting needles, a sewing needle disposed at the front of the machine and means for reciprocating the sewing needle through a plane containing the row of knitting needles in a position beneath the tubular guide whereby during use the sewing needle passes a binding thread from the front to the rear of the machine, said thread passing around coupling elements being guided from the lower end of the tube, the needle coacting with at least one of the knitting needles to knit the binding thread into the tape and secure the elements thereto.
Claim 9
Dependent Claim
164 words
A warp-knitting machine for making a sliding clasp fastener stringer, the machine having a knitting zone and comprising a row of knitting needles for knitting a carrier tape of the stringer, a plurality of guide bars each carrying yarn guides, a tubular guide having a lower end disposed to guide a series of interconnected coupling elements to a predetermined position in the knitting zone adjacent one end of the row of knitting needles, a sewing needle disposed at the front of the machine and means for reciprocating the sewing needle through a plane containing the row of knitting needles in a position beneath the tubular guide whereby during use the sewing needle passes a binding thread from the front to the rear of the machine, said thread passing around coupling elements being guided from the lower end of the tube, the needle coacting with at least one of the knitting needles to knit the binding thread into the tape and secure the elements thereto.
Claim 10
Dependent Claim
26 words
A machine according to claim 7 wherein the tubular guide is supported in a fixed position relative to the plane of movement of the knitting needles.
Claim 11
Dependent Claim
57 words
A machine according to claim 7 wherein means are provided for moving the sewing needle in directions in the lapping sense of the yarn guides when the needle is at the front of the machine so that the needle acts to form stitch loops of binding thread on at least two different knitting needles of the machine.
References Cited (Backward Citations)
US3176637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |