Patent US4019448A successfully refreshed from Google Patents.
US4019448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece guide for sewing machines
Assignee: Rockwell-Rimoldi SpA
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Filing: 1975-10-09
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Granted: 1977-04-26
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Expires: 1995-10-09
Abstract
Abstract An improved workpiece guide for sewing machines comprising a vertical wall which is substantially at a right angle to the support surface of the work, wherein is positioned in the right-hand side of the sewing station, one or more separating plates movable between operative and inoperative positions, which plates project beyond the vertical wall parallel to the work support surface and are positioned to project over the sewing axis both on the right-hand side and the left-hand side thereof when in the operative position, and means to elevate the separating plates when in the inoperative position to locations vertically above the positions they occupy when in the operative position.
Inventors
- 👤 Nerino Marforio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:44
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/10; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
In a workpiece guide for sewing machines having a vertical wall disposed perpendicular to the work surface of the machine on the right hand side of the sewing axis with an upper plate spaced from the work surface and extending parallel with the latter beyond the sewing axis, the improvement comprising: a. at least one movable plate (16) pivotably mounted intermediate the upper plate and the work surface; b. means for pivoting said movable plate between an operative position overlying the sewing axis and an inoperative position spaced from the sewing axis; and c. means on the work surface for operative association with said movable plate for elevating the latter in its inoperative position to a location above its operative position for effecting a descending movement thereof during its return to the latter position by said pivoting means.
Claim 2
Dependent Claim
138 words
In a workpiece guide for sewing machines having a vertical wall disposed perpendicular to the work surface of the machine on the right hand side of the sewing axis with an upper plate spaced from the work surface and extending parallel with the latter beyond the sewing axis, the improvement comprising: a. at least one movable plate (16) pivotably mounted intermediate the upper plate and the work surface; b. means for pivoting said movable plate between an operative position overlying the sewing axis and an inoperative position spaced from the sewing axis; and c. means on the work surface for operative association with said movable plate for elevating the latter in its inoperative position to a location above its operative position for effecting a descending movement thereof during its return to the latter position by said pivoting means.
Claim 3
Dependent Claim
23 words
The workpiece guide according to claim 1 wherein said pivoting means includes a pneumatic cylinder (10) operatively connected to said moveable plate (16).
Claim 4
Dependent Claim
16 words
The workpiece guide according to claim 1 wherein said elevating means defines a hemispherical cap (17).
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |