Flip-up C-shank standard for a cultivator
First Claim
1. Cultivator shank structure for mounting on a tube, the shank structure adapted for forward movement over the ground and comprising;
- a mounting bracket;
a C-shaped shank having a top portion pivotally connected to the mounting bracket for rocking about a transverse axis, the shank also including a lower tool receiving end;
the mounting bracket including a mounting portion for mating with the tube and sides generally embracing the top portion of the shank; and
releasable pin structure connected to the mounting bracket for selectively maintaining the shank in a preselected pivotal position corresponding to a working position of the shank, the pin structure when released facilitating upward pivoting of the shank about the transverse axis to a storage position wherein the lower tool receiving end is offset above the transverse axis; and
wherein the shank is edgebent to provide a narrow profile to soil while the shank is moved forwardly through the soil, and the top portion of the shank includes a widened pivot area, the mounting bracket including a forward mounting portion pivotally supporting the widened pivot area and a narrowed shank embracing portion rearwardly of the pivot area for receiving an edgebent portion of the shank and providing transverse stability to the shank.
1 Assignment
0 Petitions
Accused Products
Abstract
A simple, light-weight C-shank standard is mounted on a bracket which is corner clamped to a rig cross tube on a row crop cultivator. A pin inserted through apertures in the bracket maintains the shank in a preselected field-working attitude. The pin can be removed to allow the shank to be pivoted upwardly for maintenance, sweep removal, or residue removal. The shank can be supported in the raised position by the pin when the cultivator configuration is changed for cultivation in lay-by conditions, or for operation in skip row or other special crop configurations. In one embodiment of the invention, the shank is edgebent and selective placement of the pin through one of a plurality of sets of mating holes in the bracket and the upper portion of the shank permits adjustment of the working position of the shank. A mounting slot at the lower end of the one embodiment of the shank provides pitch adjustment for the earthworking tool.
19 Citations
16 Claims
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1. Cultivator shank structure for mounting on a tube, the shank structure adapted for forward movement over the ground and comprising;
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a mounting bracket; a C-shaped shank having a top portion pivotally connected to the mounting bracket for rocking about a transverse axis, the shank also including a lower tool receiving end; the mounting bracket including a mounting portion for mating with the tube and sides generally embracing the top portion of the shank; and releasable pin structure connected to the mounting bracket for selectively maintaining the shank in a preselected pivotal position corresponding to a working position of the shank, the pin structure when released facilitating upward pivoting of the shank about the transverse axis to a storage position wherein the lower tool receiving end is offset above the transverse axis; and wherein the shank is edgebent to provide a narrow profile to soil while the shank is moved forwardly through the soil, and the top portion of the shank includes a widened pivot area, the mounting bracket including a forward mounting portion pivotally supporting the widened pivot area and a narrowed shank embracing portion rearwardly of the pivot area for receiving an edgebent portion of the shank and providing transverse stability to the shank. - View Dependent Claims (2, 3, 4)
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5. Cultivator shank structure for mounting on a tube, the shank structure adapted for forward movement over the ground and comprising:
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a mounting bracket having sides with a forward connecting portion adapted for mounting on the tube and a rearward portion, wherein the sides diverge inwardly from the forward connecting portion to the rearward portion; a rigid shank having a lower tool receiving end and an upper portion of preselected width pivotally connected to the forward connecting portion of the mounting bracket for rocking between the sides about a transverse axis, the upper portion of the shank having a narrow profile and embraced by the inwardly diverging sides to provide lateral stability; and means connected to the mounting bracket for selectively maintaining the shank in one of at least two preselected pivotal positions, the first position corresponding to a working position of the shank and the second position corresponding to a storage position of the shank. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification