US3262410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machine work-feeding mechanism
Assignee: Individual
•
Filing: 1964-11-05
•
Granted: 1966-07-26
•
Expires: 1984-11-05
Abstract
No abstract record available.
Inventors
- 👤 William J Chernes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
D; D05; D05B; D05B27/00; D05B27/02; D05B27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
335 words
IN A SEWING MACHINE HAVING A MAIN FRAME WITH A WORK SUPPORTING BASE AND A DRIVE SHAFT AND STITCHING NEEDLES DRIVEN BY SAID SHAFT PROVIDING AN UP AND DOWN WORKING MOVEMENT THERETO INTO AND OUT OF MATERIAL ENGAGING POSITIONS WITH A BOTTOM FEED DOG ACTUATED IN TIMED RELATION TO STITCHING BY SAID NEEDLE FOR EXERTING AN ADVANCING FORCE ON MATERIAL BEING SEWN FOR A PREDETERMINABLE ADJUSTABLE ADVANCE STEP MOVEMENT, A TOP WORK-FEEDING MECHANISM FOR COOPERATING WITH SAID BOTTOM FEED DOG COMPRISING A PAIR OF ECCENTRIC FEED-DRIVE ELEMENTS, MEANS FOR MECHANICALLY DRIVING SAID ECCENTRIC FEED-DRIVE ELEMENTS BY SAID DRIVE SHAFT IN PREDETERMINED ANGULAR RELATIONSHIPS, A PAIR OF ROCKER ARMS EACH OPERAABLY CONNECTED RESPECTIVELY TO ONE OF SAID ECCENTRIC DRIVE ELEMENTS, A PAIR OF OSCILLATABLE DRIVE RODS EACH OPERABLY CONNECTED RESPECTIVELY TO A SEPARATE ONE OF SAID ROCKER ARMS AND ROTABLY SUPPORTED ON SAID MAIN FRAME, A SECOND PAIR OF ROCKER ARMS EACH OPERABLE CONNECTED RESPECTIVELY TO ONE OF SAID DRIVE RODS, A PAIR OF ROCK SHAFTS EACH OPERABLY CONNECTED RESPECTIVELY TO ONE OF SAID SECOND PAIR OF ROCKER ARMS, SAID OPERABLE CONNECTIONS OF SAID ECCENTRIC DRIVE ELEMENTS TO SAID DRIVE SHAFT AND TO SAID ROCK SHAFTS BEING ANGULARLY AND OSCILLATABLY RELATED RESPECTIVELY TO PROVIDE FOR A MAJOR ROCKING MOVEMENT OF ONE OF SAID ROCK SHAFTS TRANSVERSELY TOWARD AND AWAY FROM SAID NEEDLE AND FOR A MAJOR ROCKING MOVEMENT OF THE OTHER OF SAID ROCK SHAFTS UP AND DOWN IN THE DIRECTION OF MOVEMENT OF SAID NEEDLE, A FEED BAR DRIVINGLY ENGAGED BY SAID ROCK SHAFTS SLIDABLE RESPECTIVELY IN DIRECTIONS PERPENDICULAR TO THE DIRECTION OF MAJOR ROCKING MOVEMENT OF EACH ROCK SHAFT AND DRIVINGLY ENGAGED THEREBY IN SAID RESPECTIVELY MAJOR ROCKING MOVEMENT DIRECTIONS, MEANS FOR ROCKABLY AND SLIDABLY SUPORTING SAID FEED BAR, AND A TOP FEED DOG OPERABLY CARRIED BY SAID FEED BAR ALTERNATELY TO ENGAGE AND BE DISENGAGED FROM MATERIAL ABOVE SAID BOTTOM FEED DOG AND FOR EXERTING AND ADVANCING FORCE WHILE THE NEEDLE IS OUT OF MATERIAL ENGAGING POSITION SYNCHRONOUSLY WITH SAID BOTTOM FEED DOG.
Claim 2
Dependent Claim
335 words
IN A SEWING MACHINE HAVING A MAIN FRAME WITH A WORK SUPPORTING BASE AND A DRIVE SHAFT AND STITCHING NEEDLES DRIVEN BY SAID SHAFT PROVIDING AN UP AND DOWN WORKING MOVEMENT THERETO INTO AND OUT OF MATERIAL ENGAGING POSITIONS WITH A BOTTOM FEED DOG ACTUATED IN TIMED RELATION TO STITCHING BY SAID NEEDLE FOR EXERTING AN ADVANCING FORCE ON MATERIAL BEING SEWN FOR A PREDETERMINABLE ADJUSTABLE ADVANCE STEP MOVEMENT, A TOP WORK-FEEDING MECHANISM FOR COOPERATING WITH SAID BOTTOM FEED DOG COMPRISING A PAIR OF ECCENTRIC FEED-DRIVE ELEMENTS, MEANS FOR MECHANICALLY DRIVING SAID ECCENTRIC FEED-DRIVE ELEMENTS BY SAID DRIVE SHAFT IN PREDETERMINED ANGULAR RELATIONSHIPS, A PAIR OF ROCKER ARMS EACH OPERAABLY CONNECTED RESPECTIVELY TO ONE OF SAID ECCENTRIC DRIVE ELEMENTS, A PAIR OF OSCILLATABLE DRIVE RODS EACH OPERABLY CONNECTED RESPECTIVELY TO A SEPARATE ONE OF SAID ROCKER ARMS AND ROTABLY SUPPORTED ON SAID MAIN FRAME, A SECOND PAIR OF ROCKER ARMS EACH OPERABLE CONNECTED RESPECTIVELY TO ONE OF SAID DRIVE RODS, A PAIR OF ROCK SHAFTS EACH OPERABLY CONNECTED RESPECTIVELY TO ONE OF SAID SECOND PAIR OF ROCKER ARMS, SAID OPERABLE CONNECTIONS OF SAID ECCENTRIC DRIVE ELEMENTS TO SAID DRIVE SHAFT AND TO SAID ROCK SHAFTS BEING ANGULARLY AND OSCILLATABLY RELATED RESPECTIVELY TO PROVIDE FOR A MAJOR ROCKING MOVEMENT OF ONE OF SAID ROCK SHAFTS TRANSVERSELY TOWARD AND AWAY FROM SAID NEEDLE AND FOR A MAJOR ROCKING MOVEMENT OF THE OTHER OF SAID ROCK SHAFTS UP AND DOWN IN THE DIRECTION OF MOVEMENT OF SAID NEEDLE, A FEED BAR DRIVINGLY ENGAGED BY SAID ROCK SHAFTS SLIDABLE RESPECTIVELY IN DIRECTIONS PERPENDICULAR TO THE DIRECTION OF MAJOR ROCKING MOVEMENT OF EACH ROCK SHAFT AND DRIVINGLY ENGAGED THEREBY IN SAID RESPECTIVELY MAJOR ROCKING MOVEMENT DIRECTIONS, MEANS FOR ROCKABLY AND SLIDABLY SUPORTING SAID FEED BAR, AND A TOP FEED DOG OPERABLY CARRIED BY SAID FEED BAR ALTERNATELY TO ENGAGE AND BE DISENGAGED FROM MATERIAL ABOVE SAID BOTTOM FEED DOG AND FOR EXERTING AND ADVANCING FORCE WHILE THE NEEDLE IS OUT OF MATERIAL ENGAGING POSITION SYNCHRONOUSLY WITH SAID BOTTOM FEED DOG.
References Cited (Backward Citations)
US2119316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |