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US 4,224,997 AGranted
Soil cultivating implements
OwnerCornelis van der Lelyinventor
Life of this patent
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OwnerCornelis van der Lelyinventor
Estimating the term…
A soil cultivating implement has an elongated frame portion and a plurality of rotatable members mounted at the lower ends of respective elongated shafts. Each member includes a carrier and tools on radial arms are connected to the carrier. The carrier is fastened to a nonrotatable tube through a hood and flange arrangement that prevents stalks and the like from fouling the shaft housed within the tube. The tools can be rigid tines or resilient strip-like blades which are angled downwardly in the direction of rotation. Guides in the form of rods can be mounted to coextend with the tools, upwardly to the rear so that soil loosened by the tools is displaced upwardly by forces that crumble the displaced soil before the latter falls rearwardly. Drive to shafts is effected through a gear box on the frame portion and further shafts that have pinions in mesh with those on the soil working member shafts. A further implement can be linked to the frame portion and driven via a rear shaft of the gear box.
A soil cultivating implement comprising a frame and at least one soil working member rotatably mounted on said frame, said member comprising an elongated, substantially vertical shaft and a tool carrier adjacent the lower end of the shaft, the outer periphery of said carrier extending in a generally horizontal plane and driving means connected to rotate said carrier about an axis defined by said shaft, a part of said driving means being mounted adjacent the upper end of the shaft, tool means connected to said carrier by an arm and said arm comprising a support for said tool means, said tool means being fastened to said support intermediate opposite ends of the tools means, said tool means having a lower free end and an upper free end positioned below and above said arm, respectively, said lower free end being in leading position with respect to the normal direction of rotation of said member, said tool means being substantially tangential to the axis of rotation of said carrier, said tool including a resilient guide that extends rearwardly beyond said upper free end, said guide comprising rods.
Dependencies are inferred from the claim text.