US3935696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural tool bar
Assignee: Individual
•
Filing: 1974-05-16
•
Granted: 1976-02-03
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Expires: 1994-05-16
Abstract
Abstract An agricultural tool bar particularly well suited for use as a hay rake or the like is disclosed which may be quickly and easily moved between transport and working positions with a minimum of effort. The tool bar comprises a wheeled frame which is secured to the draw bar of the tractor and which has wheeled wing frames pivotally secured to the outer ends thereof. Each of the frames carries a pivotal tool support or bar thereon which are interconnected and which may be pivotally moved to raise and lower the tool secured thereto. Each of the wing frames carries a selectively pivotal wheel which may be locked in working or transport positions. Locking means is provided between the outer ends of the central frame and the wing frames to lock the wing frames in their working position.
Inventors
- 👤 Raymond Pavel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:16
CPC Classifications
A; A01; A01B; A01B73/00; A01B73/02; A01B73/06; A01B73/067
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
An agricultural tool bar comprising, a wheeled center frame having rearward and forward ends and opposite sides, first and second wing frames each having rearward, forward, inner and outer ends, said first wing frame being selectively pivotally secured at its inner end, about a vertical axis, to one side of said center frame, said second wing frame being selectively pivotally secured at its inner end, about a vertical axis, to the other said of said center frame, said first and second wing frames being selectively pivotally movable between working and transport positions relative to the direction of travel of the tool bar, locking means for selectively locking said wing frames in their said working position, a rotatable wheel pivotally mounted on each of said wing frames and being pivotally movable between working and transport positions, a tool support bar movably mounted on each of said center frame, said first wing frame and said second wing frame, and means for moving said tool support bars relative to said center frame, said first wing frame and said second wing frame.
Claim 2
Dependent Claim
178 words
An agricultural tool bar comprising, a wheeled center frame having rearward and forward ends and opposite sides, first and second wing frames each having rearward, forward, inner and outer ends, said first wing frame being selectively pivotally secured at its inner end, about a vertical axis, to one side of said center frame, said second wing frame being selectively pivotally secured at its inner end, about a vertical axis, to the other said of said center frame, said first and second wing frames being selectively pivotally movable between working and transport positions relative to the direction of travel of the tool bar, locking means for selectively locking said wing frames in their said working position, a rotatable wheel pivotally mounted on each of said wing frames and being pivotally movable between working and transport positions, a tool support bar movably mounted on each of said center frame, said first wing frame and said second wing frame, and means for moving said tool support bars relative to said center frame, said first wing frame and said second wing frame.
Claim 3
Dependent Claim
37 words
The tool bar of claim 1 wherein said locking means includes mechanism for automatically locking each of said wing frames in their working positions as they are being moved from their transport position to their working position.
Claim 4
Dependent Claim
31 words
The tool bar of claim 1 wherein wheel locking means is provided on each of said wing frames for selectively locking said rotatable wheels thereon in said working and transport positions.
Claim 5
Dependent Claim
134 words
The tool bar of claim 1 wherein said tool support bars are pivotally mounted, about horizontal axes, on said frame and wherein said means for moving tool support bars comprises a first shaft rotatably mounted on said center frame about a horizontal axis parallel to the tool support bar thereon, a first linkage pivotally interconnecting said first shaft and said tool support bar on said center frame, a power cylinder on said center frame, a second linkage interconnecting said power cylinder and first shaft whereby operation of said power cylinder causes said second linkage to rotate said first shaft which causes said first linkage to pivotally move said tool support bar on said center frame and interconnection mechanism interconnecting said first shaft and said tool support bars on said first and second wing frames.
Claim 6
Dependent Claim
48 words
The tool bar of claim 4 wherein said interconnection mechanism comprises a rotatable shaft mounted on each of said wing frames which are connected to the ends of said first shaft, and pivotal linkage interconnecting the rotatable shafts on said wing frames with the tool support bar thereon.
Claim 7
Dependent Claim
38 words
The tool bar of claim 5 wherein a universal joint is mounted on each end of said first shafts, each of said universal joints being operatively telescopically secured to the rotatable shaft on the wing frame adjacent thereto.
Claim 8
Dependent Claim
54 words
The tool bar of claim 5 wherein tine members are secured to each of said tool support bars, said first and second linkages being disposed relative to each other so that the tool support bar on said center frame is pivotally moved a greater amount than the tool support bars on said wing frames.
Claim 9
Dependent Claim
127 words
The tool bar of claim 1 wherein a pair of said locking means is provided for locking said wing frames in their working positions, each of said locking means comprising a first vertically disposed stub mounted on said center frame; a first lever pivotally mounted on said center frame and having a locking pipe secured thereto and extending downwardly therefrom adapted to have its lower end received by said pipe stub when in a locked position; a collar mounted on said wing frame and being positioned above said pipe stub when said wing frame is in its working position; said locking pipe adapted to extend downwardly through said collar to lock said wing frame in its working position when said first lever is in its locked position.
Claim 10
Dependent Claim
25 words
The tool bar of claim 8 comprising a manually operated cam mechanism for moving said lever upwardly from its locked position to its unlocked position.
Claim 11
Dependent Claim
54 words
The tool bar of claim 8 wherein a lever actuator is secured to the wing frame for engagement with said first lever as said wing frame is moved to its working position to pivotally move said first lever upwardly to permit said collar to be positioned between said locking pipe and said pipe stub.
Claim 12
Dependent Claim
34 words
The tool bar of claim 10 wherein said lever actuator disengages from said locking pipe to move downwardly through said collar and into said pipe stub when said wing frame reaches its working position.
References Cited (Backward Citations)
US3173497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |