Patent US2798181A successfully refreshed from Google Patents.
Patent US3724404A successfully refreshed from Google Patents.
US3724404A
Expired / Lapsed
US
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Fancy stitch zigzag sewing machines
Assignee: Singer Co
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Filing: 1971-01-04
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Granted: 1973-04-03
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Expires: 1991-01-04
Abstract
Abstract A zigzag sewing machine is disclosed which can exchangeably accommodate any one of a variety of differently organized special cam units for producing special patterns of zigzag stitches, zigzag stitch patterns combined with patterned work feed control, or closed stitch groups such as buttonholes.
Inventors
- 👤 W Marsh
- 👤 L Coulombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:55
CPC Classifications
D; D05; D05B; D05B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
294 words
A sewing machine having a zigzag needle and a work feeding mechanism, pattern cam controllable zigzag mechanism for said needle comprising a means for controlling the bight of zigzag stitching and including a bight influencing pattern cam follower, and a means for controlling the field of zigzag stitching and including a field controlling pattern cam follower, means for controlling the stitch length and direction of feed of said work feeding mechanism and including a feed controlling pattern cam follower, a cam shaft carried in said sewing machine, means for rotating said cam shaft in timed relation with the operation of said sewing machine, said cam shaft being provided with a reception seat accommodating in rotationally interlocked relation therewith, the hub portion of any selected one of a plurality of differently organized cam units including cam units having a hub and a pattern cam disk fixed on said hub, and cam units having a hub, a pattern cam disk rotatable on said hub, and a selectively operable clutch means between said cam means and said hub, certain of said cam units including one pattern cam disk disposed in a first predetermined plane perpendicular to the axis of the respective hub thereof, certain of said cam units including a second cam disposed in a second predetermined plane perpendicular to the axis of the respective hub thereof, means for positioning the bight and field influencing pattern cam followers of said zigzag mechanism selectively in tracking relation with a pattern cam disk in said first predetermined plane of a cam unit accommodated on the reception seat, and means for positioning the feed controlling pattern cam follower in tracking relation with a pattern cam disk in said second predetermined plane of a cam unit accommodated on said reception seat.
Claim 2
Dependent Claim
294 words
A sewing machine having a zigzag needle and a work feeding mechanism, pattern cam controllable zigzag mechanism for said needle comprising a means for controlling the bight of zigzag stitching and including a bight influencing pattern cam follower, and a means for controlling the field of zigzag stitching and including a field controlling pattern cam follower, means for controlling the stitch length and direction of feed of said work feeding mechanism and including a feed controlling pattern cam follower, a cam shaft carried in said sewing machine, means for rotating said cam shaft in timed relation with the operation of said sewing machine, said cam shaft being provided with a reception seat accommodating in rotationally interlocked relation therewith, the hub portion of any selected one of a plurality of differently organized cam units including cam units having a hub and a pattern cam disk fixed on said hub, and cam units having a hub, a pattern cam disk rotatable on said hub, and a selectively operable clutch means between said cam means and said hub, certain of said cam units including one pattern cam disk disposed in a first predetermined plane perpendicular to the axis of the respective hub thereof, certain of said cam units including a second cam disposed in a second predetermined plane perpendicular to the axis of the respective hub thereof, means for positioning the bight and field influencing pattern cam followers of said zigzag mechanism selectively in tracking relation with a pattern cam disk in said first predetermined plane of a cam unit accommodated on the reception seat, and means for positioning the feed controlling pattern cam follower in tracking relation with a pattern cam disk in said second predetermined plane of a cam unit accommodated on said reception seat.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |