Claims
- 1. A resetting mechanism for mounting a ground-engaging tool to an agricultural toolbar having a generally upright rear surface, comprising:
a shank carrying said tool; a toolbar mount adapted to be removably mounted to said toolbar and including a guide plate engaging said rear surface of said toolbar when said mount is assembled to said toolbar, said mount further including a pair of spaced side plates engaging said toolbar and extending rearwardly and upwardly thereof; a first pivot mount carrying said shank and pivotally mounted at a first location to said side plates of said toolbar mount for rotation from a generally horizontal use position when said tool is in a field use position to a tripped position above said use position when said tool engages an obstacle; said guide plate including an upwardly extending opening receiving said pivot mount, said opening having an upper edge providing a limit position for said pivot mount in said tripped position; a spring assembly including at least one pre-loaded coil spring and having a lower end pivotally mounted to said first pivot mount at a second location rearward of said first location; a second pivot mount pivotally mounting said spring assembly to said side plates of said toolbar mount at an intermediate location of said spring assembly and such that an action line of said spring assembly extends rearwardly and upwardly of said first pivot location and wherein said guide plate prevents said action line from passing overcenter of said first pivot location.
- 2. The apparatus of claim 1, wherein said action line of said spring assembly defines an included angle with the horizontal in the range of approximately 50° to 80° when said shank is in the use position.
- 3. The apparatus of claim 2, wherein said action line of said spring assembly defines an included angle of approximately 65° with the horizontal.
- 4. The apparatus of claim 1, further comprising a transverse brace member fixed to said first and second side plates of said toolbar mount and cooperating with said upper edge of said opening in said guide plate to engage said toolbar mount in said tripped position.
- 5. The apparatus of claim 1, further comprising a saddle member mounted between said first and second side plates of said toolbar mount and extending below said first pivot mount to limit the downward motion of said first pivot mount when said shank is in said field use position.
- 6. The apparatus of claim 1, wherein said spring assembly includes a second coil spring concentrically mounted within said first coil spring;
and further including a spring bolt extending through said first and second coil springs; a spring holder connected to the upper end of said first and second coil springs and extending downwardly about at least a portion of said coil springs; a spring mount connected to said spring bolt and providing said pivotal mount of said spring assembly to said first pivot mount; said springs compressing as said first pivot mount rotates from said use position to said tripped position; said spring bolt extending through said springs during compression thereof.
- 7. The apparatus of claim 1, wherein said shank comprises a shank for a fertilizer applicator, said shank further including a knife at the bottom thereof to form a furrow, and a fertilizer applicator tube extending behind said shank and defining a discharge opening adjacent a rear edge of said knife.
RELATED APPLICATION
[0001] This application claims the benefit of the filing date of co-pending provisional application No. 60/230,672, filed Sep. 7, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
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60230672 |
Sep 2000 |
US |