Title: Agricultural tool bar

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Claims: I claim:

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

11. 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.

Other info:

Inventors: Pavel, Raymond (Scotland, SD, US)

Application Number: 470390
Filing Date: 1974-05-16
Publication_date: 1976-02-03
Assignee:
Primary Class(es): 56/385 172/311, 172/456
Other Classes:
US Patent Ref:

3173497

Mar, 1965

French

56/385.

Other Refs:
Primary Examiner: Mancene, Louis G.
Assistant Examiner: Cutting, Robert F.
Attorney: Zarley, McKee, Thomte, Voorhees & Sease