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US 4,412,587 AGranted
Soil working machine
OwnerCornelis van der Lelyinventor
Life of this patent
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OwnerCornelis van der Lelyinventor
Estimating the term…
A soil working machine has a working member with element blades and a scraping member that releases clods cut out by the working member so that the clods drop to the ground. Both of the members can be positively driven in the same direction about horizontal axes, but the scraping member can also be rotated by contact with the ground. Preferably, the blades are secured to support discs and extend axially of the working member. Scraping elements on arms of the scraping member project between the blades of adjacent support discs and have vanes which also extend almost axially. During rotation, the vanes are moved to intersect the paths of the blades and to remove the clods. Other forms of scraping members are described. The scraping member ensures that soil is wiped from the blades, to avoiding clogging of the working member and a consequent increased power requirement. Also, the cut clods are preferably replaced upside down by the action of the members.
A soil working machine comprising a frame and at least one working member rotatably mounted on said frame, driving means connected to rotate said member about a horizontal axis, elongated opposing elements on pairs of supports of said member and a further member being displaceably mounted on said frame to the rear of said working member, said further member comprising a plurality of clod depositing means that project between adjacent elements of the working member, said clod depositing means being movable adjacent surfaces of said elements and co-operating with these elements during operation, said clod depositing means being arranged on arms positioned substantially midway between said supports of the working member, said arms being connected to an eccentric mechanism of the driving means and the respective arms being mounted on a shaft which extends substantially parallel to said axis.
Dependencies are inferred from the claim text.