Patent US631635A successfully refreshed from Google Patents.
Patent US3554238A successfully refreshed from Google Patents.
US3554238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dobbies
Assignee: Staeubli AG
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Filing: 1968-04-23
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Granted: 1971-01-12
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Expires: 1988-04-23
Abstract
Abstract A dobby in which the reading needles are actuated into reading position of a perforated pattern card by a first system that applies a low value driving force to the needles so that the pattern card is not damaged if a perforation is not sensed by the needles as would be the case if too strong a force were applied to the reading needle. A second driving system operative in a series mode with the first system applies a stronger driving force to the needles in those instances where a perforation in the pattern card is read by the needles.
Inventors
- 👤 Ernst Hoening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:53
CPC Classifications
D; D03; D03C; D03C1/00; D03C1/14; D03C1/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
296 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means applying force to the reading needle sequentially, a first one of said means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means comprising a positively driven lever mechanism applying a greater force than the force of the first system to move the needle deeper into the perforation of the pattern card, a needle holder, said lever mechanism comprising a double lever having first and second lever arms driven so that it swings to and fro, a cam on the needle holder, the cam and lever arms being so arranged that the first arm, during the movement of the double lever away from the pattern card lifts the needle out and away from the pattern card against the force of the weaker first means, and during its movement toward the pattern card, releases the needle for reading the pattern card, and the second arm entrains the needle or its holder, during its movement towards the pattern card, if the needle has moved slightly into a perforation which has been read, and the cam having a face cooperating with the second arm to allow during this movement the arm to slide past the cam and does not entrain the needle or its holder, if the needle only rests on the pattern card and has not read any perforations.
Claim 2
Dependent Claim
296 words
A dobby with at least one needle for reading a perforated pattern card comprising, two driving means applying force to the reading needle sequentially, a first one of said means having means to apply a low value force to initiate the reading of the pattern card by the reading needle and initiate entry of said needle into a perforation, and a second means effective to apply force to the reading needle to continue insertion of said needle into a perforation when there is a slight movement of the needle into a perforation of the pattern card, the second driving means having means comprising a positively driven lever mechanism applying a greater force than the force of the first system to move the needle deeper into the perforation of the pattern card, a needle holder, said lever mechanism comprising a double lever having first and second lever arms driven so that it swings to and fro, a cam on the needle holder, the cam and lever arms being so arranged that the first arm, during the movement of the double lever away from the pattern card lifts the needle out and away from the pattern card against the force of the weaker first means, and during its movement toward the pattern card, releases the needle for reading the pattern card, and the second arm entrains the needle or its holder, during its movement towards the pattern card, if the needle has moved slightly into a perforation which has been read, and the cam having a face cooperating with the second arm to allow during this movement the arm to slide past the cam and does not entrain the needle or its holder, if the needle only rests on the pattern card and has not read any perforations.
Claim 3
Dependent Claim
17 words
A dobby according to claim 1, including means driving the double lever which swings to and fro.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |