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US 4,071,089 AGranted
Soil cultivating implements
OwnerCornelis van der Lelyinventor
Life of this patent
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OwnerCornelis van der Lelyinventor
Estimating the term…
A cultivator has an elongated beamed frame and a plurality of soil working groups pivoted to a forward beam by at least one parallelogram linkage. The groups are pivoted to turn about pivot connections, that define horizontal axes that extend transverse to the direction of travel, responsive to ground undulations. Driving connection to each group is obtained through gear boxes mounted along a support that extends transverse to the direction of travel, between forward and rearward beams of the frame and each group is rotated about an axis defined by an upwardly extending shaft that is engaged by a transverse driving shaft housed in the support. The support can also be formed by elongated frame portions that are mounted side-by-side with driving shafts mounted on the tops of the frame portions. A tool bar with seeders can be attached to the rear beam through linkages and a supporting roller can be adjustably connected to the frame immediately to the rear of the soil working members to regulate their working depths. Each group includes a tube arm with tined soil working members mounted at the ends of the arm so as to be freely rotatable responsive to contact with the ground.
A cultivator implement comprising a frame and at least one group of soil working members being supported on said frame, each of said soil working members being rotatable about an upwardly extending axis and driving means connected to rotate said soil working members, a ground engaging supporting member being positioned to the rear of said soil working members and said supporting member being interconnected to said frame with setting means that fixes the relative horizontal positions of said frame and supporting member, said group of soil working members being mounted on a substantially horizontal support and said support being pivoted to said frame by at least one linkage, said support together with said soil working members being vertically displaceable about pivot means of the linkage relative to both said frame and said ground engaging member to avoid obstacles during operation, stop means on said implement being positioned to limit the extreme vertical movement of said group of soil working members in at least one direction with respect to said frame.
A cultivator implement comprising a frame and a plurality of groups of soil working members being supported on said frame, said soil working members being rotatable about axes defined by corresponding upwardly extending shafts supported on elongated beam means that extend horizontally transverse to the direction of travel, said beam means housing driving means connected to rotate said soil working members about said axes, a ground engaging supporting member being positioned to the rear of said soil working members and said supporting member being interconnected to said frame with setting means that fixes the relative horizontal positions of said frame and supporting member, said beam means being pivoted to said frame by at least two spaced apart linkages, said groups of soil working members being vertically displaceable about pivots of said linkages, relative to both said frame and said ground engaging member to avoid obstacles during operation, stop means on said implement being positioned to limit the extreme vertical movements of said groups of soil working members.
A cultivator implement comprising a frame and at least two groups of tined soil working members being supported on said frame, said soil working members being rotatable about axes defined by upwardly extending shafts supported on elongated beam means housing driving means connected to rotate said soil working members about said axes, a ground engaging supporting roller being positioned to the rear of said soil working members and said roller being interconnected to said frame with setting means that fixes the relative horizontal positions of said frame and roller, said beam means being pivoted to said frame by at least two spaced apart linkages, said groups of soil working members being vertically displaceable independently of one another about pivots of the linkages, relative to both said frame and said ground engaging member to avoid obstacles during operation, stop means on said implement being positioned to limit the extreme vertical movements of said groups of soil working members.
A cultivator implement comprising a frame and at least one group of soil working members being supported on said frame, each of said soil working members being rotatable about an upwardly extending axis and driving means connected to rotate said soil working members, a ground engaging supporting member being positioned to the rear of said soil working members and said supporting member being interconnected to said frame with means that establishes the relative horizontal positions of said frame and supporting member, said group of soil working members being mounted on a substantially horizontal support and said support being pivoted to said frame by at least one linkage, said support together with said soil working members being vertically displaceable about pivot means of the linkage relative to both said frame and said ground engaging member to avoid obstacles during operation, stop means on said implement being positioned to limit the extreme vertical movement of said group of soil working members in at least one direction with respect to said frame.
Dependencies are inferred from the claim text.