US3726323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge coupling between a driving shaft and an eccentric ring of a dobby mechanism
Assignee: Staeubli AG
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Filing: 1971-05-26
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Granted: 1973-04-10
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Expires: 1991-05-26
Abstract
Abstract Dobby, in which the movement of the heald shafts is effected through a connecting rod (18), which connecting rod embraces an eccentric ring (28) on the driving shaft (15). Release of the movement is effected by a coupling wedge (13), which is supported in the eccentric ring and for control purposes connects alternatively with the drive shaft or the connecting rod. Resilient semicircular guide rails (16, 16'') are provided on the connecting rod, which guide rails serve as guides for the coupling wedge during movement of same or as holding members during its coupling with the connecting rod. Through the resilient arrangement of the guide rails, damage to the dobby is avoided, in the event of a malfunction.
Inventors
- 👤 W Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:58
CPC Classifications
F; F16; F16D; F16D11/00; F16D11/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 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 having means defining an opening therein and adapted to rotatably receive said eccentric ring therein and wedge means radially movable toward and away from said drive shaft under control of a pattern card reading mechanism for selectively connecting said eccentric ring to said drive shaft, the improvement comprising: a pair of generally semicircular guide rails, said guide rails having a resiliently flexible characteristic; support means for supporting said guide rails on said connecting rod approximately concentric to the outer circumference of the eccentric ring, and supporting said guide rails for a generally radially outward movement away from said eccentric ring against a return force generated by the resiliently flexible characteristic of guide rings.
Claim 2
Dependent Claim
137 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 having means defining an opening therein and adapted to rotatably receive said eccentric ring therein and wedge means radially movable toward and away from said drive shaft under control of a pattern card reading mechanism for selectively connecting said eccentric ring to said drive shaft, the improvement comprising: a pair of generally semicircular guide rails, said guide rails having a resiliently flexible characteristic; support means for supporting said guide rails on said connecting rod approximately concentric to the outer circumference of the eccentric ring, and supporting said guide rails for a generally radially outward movement away from said eccentric ring against a return force generated by the resiliently flexible characteristic of guide rings.
Claim 3
Dependent Claim
19 words
The improvement according to claim 1, including spring means for urging said guide rails to the radially innermost position.
Claim 4
Dependent Claim
52 words
The improvement according to claim 2, wherein said guide rails are made of a spring steel to define said spring means; and wherein said mounting means comprise a plurality of slots on said guide rails, said guide rails being supported on said connecting rod by pins which are received in said slots.
Claim 5
Dependent Claim
91 words
The improvement according to claim 3, wherein said wedge means includes a wedge slidably mounted on said eccentric ring between radially outer positions wherein said eccentric ring is free of connection to said drive shaft and radially inner positions wherein said eccentric ring is connected to said drive shaft; and wherein said pair of semicircular guide rails are mounted on said connecting rod to define generally a circle, the spacing between the mutually adjacent ends of said guide rails defining zones for receiving said wedge when in said radially outer position.
Claim 6
Dependent Claim
108 words
The improvement according to claim 4, wherein said drive shaft inCludes means defining at least one recess; wherein said wedge is adapted to be received in said recess when in said radially inner position to connect said eccentric ring to said drive shaft; and wherein said wedge is further adapted to be simultaneously received in both said recess and one of said zones, a rotation of said drive shaft effecting a movement therewith of said wedge and said guide rail engaging said wedge being moved radially outwardly by said wedge to permit said wedge to move with said drive shaft and to thereby prevent damage to said dobby.
Claim 7
Dependent Claim
52 words
The improvement according to claim 3, wherein the extended axis of each of said slots intersects the theoretical line connecting the zones between said guide rails at a point closer toward the respective zone than that at which the central point of the opening in said connecting rod will ever be positioned.
Claim 8
Dependent Claim
18 words
The improvement according to claim 3, wherein the ends of said guide rails are tapered and diverge inwardly.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |