US3752194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loom shedding mechanism
Assignee: Bonas Machine Co Ltd
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Filing: 1972-02-29
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Granted: 1973-08-14
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Expires: 1992-02-29
Abstract
Abstract A heald shaft operating means for a heald shaft of a loom whereby the shaft is operably associated with a pivotal lever arranged to be driven in one directional sense by the action of a cooperating cam means acting upon a follower carried by the lever, and in the opposed directional sense by the action of a compression spring operably associated with the pivotal lever.
Inventors
- 👤 J Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:08
CPC Classifications
D; D03; D03C; D03C13/00; D03C2700/00; D03C2700/01; D03C2700/0194
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A loom shedding mechanism comprising; a heald shaft; a lever pivotal about a fulcrum and operatively associated with said heald shaft; a follower carried by said lever; cam means cooperating with and acting upon said follower for driving said lever in one directional sense; a compression spring operatively associated with said lever for acting upon said lever in an opposed directional sense; the said follower and the said compression spring being positioned on opposite sides of said fulcrum with the compression spring in close proximity to the said fulcrum and a piston and push-rod assembly by means of which said compression spring acts upon said pivotal lever.
Claim 2
Dependent Claim
107 words
A loom shedding mechanism comprising; a heald shaft; a lever pivotal about a fulcrum and operatively associated with said heald shaft; a follower carried by said lever; cam means cooperating with and acting upon said follower for driving said lever in one directional sense; a compression spring operatively associated with said lever for acting upon said lever in an opposed directional sense; the said follower and the said compression spring being positioned on opposite sides of said fulcrum with the compression spring in close proximity to the said fulcrum and a piston and push-rod assembly by means of which said compression spring acts upon said pivotal lever.
Claim 3
Dependent Claim
31 words
A loom shedding mechanism according to claim 1 including a cylinder in which said compression spring and said piston are mounted, said push rod extending between said piston and said lever.
Claim 4
Dependent Claim
32 words
A loom shedding mechanism as claimed in claim 1 in which the push rod is provided with partly spherical ends seated respectively in corresponding receiving formations in said piston and said lever.
Claim 5
Dependent Claim
95 words
A loom shedding mechanism according to claim 1 wherein said heald shaft comprises: a movable heald frame having spaced heald receiving bars; a connecting rod connected to said lever and to said heald frame; a heald frame guide means to constrain said heald frame in a fore and aft direction and being of such dimensions that said heald frame is retained between said guide means throughout its entire range of movement; and guide blocks mounted upon said heald frame guide means between said spaced heald receiving bars for constraining said heald frame from lateral movement.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |