US3344759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workholders for use in apparatus for guiding a workholder relative to a tool
Assignee: Lights London Ltd
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Filing: 1965-03-01
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Granted: 1967-10-03
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Palmer George William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
D; D05; D05B; D05B23/00; D05B39/00; D05B29/00; D05B29/06; D05B65/00; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A WORKHOLDER BY WHICH A SEAM CAN BE STITCHED ALONG A DESIRED LINE THROUGH PLIES OF FABRIC BY MEANS OF A SEWING MACHINE IN WHICH THE WORKHOLDER IS GUIDED FOR MOTION IN A PLANE BELOW AND NORMAL TO A SEWING NEEDLE OF THE MACHINE, AND WHICH MACHINE HAS MEANS FOR URGING THE WORKHOLDER IN OPPOSITE DIRECTIONS ALONG EACH OF A PAIR OF COORDINATE AXES IN SAID PLANE, AND A PAIR OF SWITCHES MOUNTED AT FIXED LOCATIONS, A SWITCH FOR EACH OF THE AXES, EACH SWITCH PROVIDING FOR CONTROL OF THE DIRECTION IN WHICH THE WORKHOLDER IS URGED FOR MOTION ALONG ITS AXIS, SAID WORKHOLDER COMPRISING: (A) UPPER AND LOWER PLATES OF SUBSTANTIALLY RIGID MATERIAL BETWEEN WHICH PLIES OF FABRIC ARE ADAPTED TO BE FLATWISE CONFINED, EACH OF SAID PLATES HAVING A SLOT DEFINING A PATH ALONG WHICH SAID DESIRED LINE OF STITCHING IS TO BE MADE; (B) COOPERATING MEANS ON THE PLATES FOR HOLDING THEM IN SUPERIMPOSED RELATION WITH THEIR SLOTS IN REGISTER; AND (C) UPSTANDING SWITCH OPERATING MEANS FIXED ON THE UPPER PLATE, LOCATED INTERMEDIATE THE ENDS OF THE SLOT THEREIN AND TO ONE SIDE OF SAID SLOT AND IN SUCH RELATION THERETO THAT THE APPROPRIATE SWITCH IS ACTUATED BY SAID MEANS WHENEVER CHANGE OF DIRECTION OF MOTION OF THE WORKHOLDER ALONG ONE OF SAID AXES IS REQUIRED TO ENABLE THE SEWING NEEDLE OF THE MACHINE TO FOLLOW THE SLOT.
Claim 2
Dependent Claim
231 words
A WORKHOLDER BY WHICH A SEAM CAN BE STITCHED ALONG A DESIRED LINE THROUGH PLIES OF FABRIC BY MEANS OF A SEWING MACHINE IN WHICH THE WORKHOLDER IS GUIDED FOR MOTION IN A PLANE BELOW AND NORMAL TO A SEWING NEEDLE OF THE MACHINE, AND WHICH MACHINE HAS MEANS FOR URGING THE WORKHOLDER IN OPPOSITE DIRECTIONS ALONG EACH OF A PAIR OF COORDINATE AXES IN SAID PLANE, AND A PAIR OF SWITCHES MOUNTED AT FIXED LOCATIONS, A SWITCH FOR EACH OF THE AXES, EACH SWITCH PROVIDING FOR CONTROL OF THE DIRECTION IN WHICH THE WORKHOLDER IS URGED FOR MOTION ALONG ITS AXIS, SAID WORKHOLDER COMPRISING: (A) UPPER AND LOWER PLATES OF SUBSTANTIALLY RIGID MATERIAL BETWEEN WHICH PLIES OF FABRIC ARE ADAPTED TO BE FLATWISE CONFINED, EACH OF SAID PLATES HAVING A SLOT DEFINING A PATH ALONG WHICH SAID DESIRED LINE OF STITCHING IS TO BE MADE; (B) COOPERATING MEANS ON THE PLATES FOR HOLDING THEM IN SUPERIMPOSED RELATION WITH THEIR SLOTS IN REGISTER; AND (C) UPSTANDING SWITCH OPERATING MEANS FIXED ON THE UPPER PLATE, LOCATED INTERMEDIATE THE ENDS OF THE SLOT THEREIN AND TO ONE SIDE OF SAID SLOT AND IN SUCH RELATION THERETO THAT THE APPROPRIATE SWITCH IS ACTUATED BY SAID MEANS WHENEVER CHANGE OF DIRECTION OF MOTION OF THE WORKHOLDER ALONG ONE OF SAID AXES IS REQUIRED TO ENABLE THE SEWING NEEDLE OF THE MACHINE TO FOLLOW THE SLOT.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |