Patent US3638593A successfully refreshed from Google Patents.
US3638593A
Expired / Lapsed
US
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Zigzag sewing machine
Assignee: GM Pfaff AG
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Filing: 1970-09-14
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Granted: 1972-02-01
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Expires: 1990-09-14
Abstract
Abstract Zigzag sewing machine having a setting member controlled by a rotatably driven control disk, the position of which determines the magnitude and direction of the feeding movements of the feed dog, and a setting arrangement having a setting shaft connected in the transmission train between the scanning member of the control disk and the setting member, for changing the transmission ratio of the control impulses emitted by the control disk, in which the setting shaft of the resetting device is journaled in a lever arm that is pivotally mounted in the machine housing, and extends essentially parallel to a link disposed in the transmission train and engages the pivot point between the transmission train and the setting device, and where the axis of the setting shaft extends through one end point of the rocking range of this pivot point produced by the control disk.
Inventors
- 👤 Kurt Vollmar
- 👤 Herbert Wenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:28
CPC Classifications
D; D05; D05B; D05B19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
186 words
In a zigzag sewing machine of the type having a rotating control disk supported on a driven shaft in the housing of the machine, a setting member operatively linked to said control disk, a feed dog operatively connected to said setting member to determine the magnitude and the direction of the feed movements, scanning means operatively connected to said control disk, a gear train operatively linking said scanning means to said setting member, an adjusting means including a setting shaft forming a part of said gear train operative to change the transmission ratio of the control impulses emitted by said control disk, said adjusting means including manual operating means, a pivot joint between said adjusting means and said gear train, a lever arm pivotally mounted in the housing of the machine and supporting said setting shaft, a link member extending generally parallel to said lever arm and connected to said pivot joint between said gear train and said adjusting means, said setting shaft having an axis extending through one end point of the path of angular movement of said pivot joint generated by said control disk.
Claim 2
Dependent Claim
186 words
In a zigzag sewing machine of the type having a rotating control disk supported on a driven shaft in the housing of the machine, a setting member operatively linked to said control disk, a feed dog operatively connected to said setting member to determine the magnitude and the direction of the feed movements, scanning means operatively connected to said control disk, a gear train operatively linking said scanning means to said setting member, an adjusting means including a setting shaft forming a part of said gear train operative to change the transmission ratio of the control impulses emitted by said control disk, said adjusting means including manual operating means, a pivot joint between said adjusting means and said gear train, a lever arm pivotally mounted in the housing of the machine and supporting said setting shaft, a link member extending generally parallel to said lever arm and connected to said pivot joint between said gear train and said adjusting means, said setting shaft having an axis extending through one end point of the path of angular movement of said pivot joint generated by said control disk.
Claim 3
Dependent Claim
95 words
Sewing machine in accordance with claim 1, including an abutment cam connected to said setting shaft, and an abutment member in said housing extending into the path of movement of said abutment cam operative to place said lever arm into a position where said setting member which is linked to said setting shaft is placed in a predetermined angular position corresponding to the maximum impulse deflection of said scanning means, and a double-armed lever having one arm connected to said pivotally mounted lever arm and provided with an adjuSting slide means at its other arm.
Claim 4
Dependent Claim
28 words
Sewing machine in accordance with claim 2 where said abutment is adjustably mounted in said housing for movement in a direction radially with respect to said setting shaft.
References Cited (Backward Citations)
US3015290A
Cited
US3426712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |