Patent US3841246A successfully refreshed from Google Patents.
US3841246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One step buttonhole operating and indicating devices
Assignee: Singer Co
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Filing: 1973-11-09
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Granted: 1974-10-15
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Expires: 1993-11-09
Abstract
Abstract A device used in conjunction with a closed pattern unit such as a buttonhole mechanism, to indicate the starting position to an operator, to initiate the steps as required for activating the closed pattern unit, and, when stored during non-use, to allow the closed pattern unit to recycle to a known position from which it will be ready to begin a new closed pattern. The device, through a linkage arrangement, presents a red flag to view adjacent a needle bar of a sewing machine when a tripping rod lever is positioned to be actuated by a presser device movable with the work material for automatically actuating the closed pattern unit. Placing of the tripping rod lever in a stored position causes the lever to be positioned by a resilient member so as to recycle the closed pattern unit to a known position from which a new closed pattern may be initiated.
Inventors
- 👤 J Skiba
- 👤 J Casner
- 👤 J Transue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:21
CPC Classifications
D; D05; D05B; D05B3/00; D05B3/06; D05B19/00; D05B29/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In a sewing machine having a frame, a closed pattern unit within said frame, said closed pattern unit operable in steps from a start position to produce a closed pattern, a presser device including a portion movable with a work fabric, a mounting plate supported on said frame, and a linkage mounted on said mounting plate and including a tripping rod lever slidable to a stored position or to an operative position to be actuated by said movable portion of said presser device, said linkage and said tripping rod lever connecting said movable portion of said presser device with said closed pattern unit to initiate said step wise operation, wherein the improvement comprises: a. means associated with said linkage for indicating said start position of said closed pattern unit, and, b. means acting on said tripping rod lever when said lever is in said stored position for causing said lever to initiate the steps of said closed pattern unit required to arrange said closed pattern unit in said start position.
Claim 2
Dependent Claim
170 words
In a sewing machine having a frame, a closed pattern unit within said frame, said closed pattern unit operable in steps from a start position to produce a closed pattern, a presser device including a portion movable with a work fabric, a mounting plate supported on said frame, and a linkage mounted on said mounting plate and including a tripping rod lever slidable to a stored position or to an operative position to be actuated by said movable portion of said presser device, said linkage and said tripping rod lever connecting said movable portion of said presser device with said closed pattern unit to initiate said step wise operation, wherein the improvement comprises: a. means associated with said linkage for indicating said start position of said closed pattern unit, and, b. means acting on said tripping rod lever when said lever is in said stored position for causing said lever to initiate the steps of said closed pattern unit required to arrange said closed pattern unit in said start position.
Claim 3
Dependent Claim
166 words
In a sewing machine as claimed in claim 1 wherein said means associated with said linkage to indicate said start position of said closed pattern unit includes a connecting link having one end connected with said linkage mounted on said mounting plate; a bell crank with first and second arms rotatably mounted on said mounting plate adjacent the other end of said connecting link and having said first arm pivoted to said connecting link; and indicator shiftably supported on said mounting plate adjacent to said bell crank, and means operatively connecting to a second arm of said bell crank with said indicator for shifting said indicator into a visible exposed position relatively to said sewing machine frame at that position of the aforesaid linkage, connecting link and bell crank corresponding to said start position of said closed pattern unit; and for shifting said indicator into a hidden position with respect to said frame at any other position of the aforesaid linkage, connecting link and bell crank.
Claim 4
Dependent Claim
65 words
In a sewing machine as claimed in claim 1 wherein said means acting on said tripping rod lever includes a resilient member mounted on said mounting plate and coacting with said tripping rod lever in said stored position to place said tripping rod lever and said linkage in a position to initiate said step wise operation of said closed pattern unit to said start position.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |