US4188900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of buttonhole formation
Assignee: Singer Co
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Filing: 1979-05-04
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Granted: 1980-02-19
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Expires: 1999-05-04
Abstract
Abstract A method of forming a buttonhole including two spaced apart rows of zig zag stitches so that each row is formed in a like manner with the final overlaying stitches accomplished in the forward direction and which may be initiated by a barring stitch adjacent the edge of the garment followed by a straight stitch down the cutting space to the opposite end of the garment.
Inventors
- 👤 Stephen A. Garron
- 👤 Charles R. Odermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:56
CPC Classifications
D; D05; D05B; D05B3/00; D05B3/24; D05B93/00; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/062
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
275 words
A method of operating a zig zag sewing machine to produce a buttonhole pattern on a work material, the buttonhole pattern including two spaced apart rows of zig zag stitches, each row having a width less than one half the total width of the two parallel rows side by side, there being a separation between the two parallel rows to define the cutting space of the buttonhole pattern, said method comprising the steps of: a. sewing a first plurality of zig zag barring stitches having a width equal to the total width of the buttonhole and with the last stitch located in the center of the total width; b. feeding the work material in a forward direction to the opposite end of the buttonhole; c. sewing a first row of narrow zig zag cording stitches in a reverse direction and extending the length of the buttonhole, said cording stitches having a width less than the width of one of said parallel rows; d. sewing one of said parallel rows of zig zag stitches in a forward direction extending the length of said buttonhole pattern and overlying said first row of cording stitches; e. sewing a second row of narrow zig zag cording stitches in said reverse direction extending the length of the buttonhole, said cording stitches having a width less than the width of one of said parallel rows, said second row of cording stitches being parallel to said first row of cording stitches; and, f. sewing the second of said parallel rows of zig zag stitches in a forward direction extending the length of said buttonhole and overlying said second row of cording stitches.
Claim 2
Independent Claim
275 words
A method of operating a zig zag sewing machine to produce a buttonhole pattern on a work material, the buttonhole pattern including two spaced apart rows of zig zag stitches, each row having a width less than one half the total width of the two parallel rows side by side, there being a separation between the two parallel rows to define the cutting space of the buttonhole pattern, said method comprising the steps of: a. sewing a first plurality of zig zag barring stitches having a width equal to the total width of the buttonhole and with the last stitch located in the center of the total width; b. feeding the work material in a forward direction to the opposite end of the buttonhole; c. sewing a first row of narrow zig zag cording stitches in a reverse direction and extending the length of the buttonhole, said cording stitches having a width less than the width of one of said parallel rows; d. sewing one of said parallel rows of zig zag stitches in a forward direction extending the length of said buttonhole pattern and overlying said first row of cording stitches; e. sewing a second row of narrow zig zag cording stitches in said reverse direction extending the length of the buttonhole, said cording stitches having a width less than the width of one of said parallel rows, said second row of cording stitches being parallel to said first row of cording stitches; and, f. sewing the second of said parallel rows of zig zag stitches in a forward direction extending the length of said buttonhole and overlying said second row of cording stitches.
Claim 3
Dependent Claim
42 words
The method of claim 1 further including the step of: g. prior to step c sewing a second plurality of zig zag barring stitches having a width equal to the total width of the buttonhole on said opposite end of said buttonhole.
Claim 4
Dependent Claim
14 words
The method of claim 2 wherein said feeding step is accomplished while skipping stitches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |