US3724511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling a wedge coupling, particularly in a dobby
Assignee: Staeubli AG
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Filing: 1971-05-26
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Granted: 1973-04-03
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Expires: 1991-05-26
Abstract
Abstract Dobby, in which the movement of the heddle frames is effected by a connecting rod (18), which connecting rod is mounted through an eccentric ring (28) on the driving shaft (15). The control of such movement is accomplished by a coupling wedge (13) which is supported in the eccentric ring and is connected in control relationship alternatively to the driving shaft or to the connecting rod. The control of the wedge is effected by means of a ring (14) movably arranged around the driving shaft, on which ring the wedges slides. One end of an arm (10) is secured to the ring, which arm carries on its other end the reading needle (4). The arm is supported through a slot (56) on a stationary member (57). The springs (49,50) acting onto the arm (10) and the supporting of the arm in the slot cause and permit the arm to tilt and yield in response to the position of the wedge and the needle.
Inventors
- 👤 W Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:03
CPC Classifications
D; D03; D03C; D03C1/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
197 words
In a dobby having a rotatable drive shaft, an eccentric ring mounted on said drive shaft and rotatable with respect thereto, a connecting rod mounted on said eccentric ring and movable in response to a rotational movement of said eccentric ring and a wedge slideably mounted on said eccentric ring and adapted to couple said eccentric ring to said drive shaft in response to a pattern card, the improvement comprising: pattern card reading means for reading said pattern card and selectively controlling the movement of said wedge and thereby the coupling of said eccentric ring to said drive shaft, said pattern card reading means including: a control arm having means defining a reading needle on one end thereof adapted to engage said pattern card; a ring mounted on the end of said control arm remote from said reading needle and encircling said drive shaft; connecting means for connecting said ring to said wedge; pivot means for pivotally supporting said control arm, said pivot means being located between said reading needle and said ring; and lifting rod means for drivingly pivoting said control arm to effect a coupling or uncoupling of said drive shaft and said eccentric ring.
Claim 2
Dependent Claim
197 words
In a dobby having a rotatable drive shaft, an eccentric ring mounted on said drive shaft and rotatable with respect thereto, a connecting rod mounted on said eccentric ring and movable in response to a rotational movement of said eccentric ring and a wedge slideably mounted on said eccentric ring and adapted to couple said eccentric ring to said drive shaft in response to a pattern card, the improvement comprising: pattern card reading means for reading said pattern card and selectively controlling the movement of said wedge and thereby the coupling of said eccentric ring to said drive shaft, said pattern card reading means including: a control arm having means defining a reading needle on one end thereof adapted to engage said pattern card; a ring mounted on the end of said control arm remote from said reading needle and encircling said drive shaft; connecting means for connecting said ring to said wedge; pivot means for pivotally supporting said control arm, said pivot means being located between said reading needle and said ring; and lifting rod means for drivingly pivoting said control arm to effect a coupling or uncoupling of said drive shaft and said eccentric ring.
Claim 3
Dependent Claim
36 words
The improvement according to claim 1, wherein said pivot means comprises an Elongated slot in said control arm and a pivot member received in said slot, said pivot member being smaller in size than said slot.
Claim 4
Dependent Claim
29 words
The improvement according to claim 2, including resilient means secured to said control arm for biasing said control arm and said reading needle into engagement with said pattern card.
Claim 5
Dependent Claim
71 words
The improvement according to claim 3, wherein said resilient means comprises a first tension spring connected to said control arm along an extended axis of said elongated slot and a second tension spring parallel to said first tension spring connected to said control arm between said pivot means and said reading needle; and wherein said lifting rod means engages said control arm between said second tension spring and said reading needle.
Claim 6
Dependent Claim
16 words
The improvement according to claim 4, wherein said first spring is weaker than said second spring.
Claim 7
Dependent Claim
20 words
The improvement according to claim 5, wherein said slot is located generally at the central portion of said control arm.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |