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US 4,058,068 AGranted
Soil cultivating and sowing implement
AssigneeC. van der Lely N. V.
InventorsAry van der Lely, Cornelis Johannes Gerardus Bom
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AssigneeC. van der Lely N. V.
InventorsAry van der Lely, Cornelis Johannes Gerardus Bom
Estimating the term…
A cultivator or rotary harrow has soil working members rotatable about upwardly extending shafts journalled in a frame portion that extends transverse to the direction of travel. The front of the frame is supported by a coupling attached to a prime mover and the rear of the implement is supported by two ground wheels. One wheel is located at each lateral side of the frame portion at the rear thereof and a bracket is pivoted to the frame with rearwardly extending arms connected to the wheel axle mountings. An extensible connecting member interconnects the axle mountings to the frame above the bracket so that the wheels can be vertically displaced by shortening or lengthening the connecting members. A sowing mechanism, including a feed box, is mounted to the rear of the soil working members with delivery tubes leading to shoes. A flow control mechanism is driven by a transmission from the wheel mountings and the shoes can be raised or lowered by a linkage and control lever.
A rotary harrow comprising a frame and a plurality of soil working members mounted on a portion of said frame, said soil working members being mounted on corresponding shafts and rotatable about upwardly extending axes defined by said shafts, driving means connected to rotate said soil working members, a coupling member on said frame being positioned for connection to a prime mover, at least one supporting ground wheel being pivotably connected to the implement by arm means adjacent the rear of said frame portion and at a level higher than said frame portion, adjusting means interconnecting said wheel with said frame portion, said wheel being vertically displaceable by said adjusting means and turnable about the pivot connection of said arm means to the implement, whereby the relative position of the wheel's rotary axis with respect to said frame portion can be changed, said adjusting mechanism having fixing means that secures said wheel and arm means in a fixed, non-pivotable position with respect to said frame portion.
A rotary harrow comprising a frame and a plurality of soil working members mounted on a portion of said frame, said soil working members being rotatable about upwardly extending axis afforded by shafts, driving means connected to said shafts to rotate said soil working members, a coupling member on the front of said frame being connectable to a prime mover, at least one supporting ground wheel on arm means and the latter being pivotably connected to the implement by at least one pivot located adjacent the rear of said frame portion, said pivot being positioned at a level higher than said frame portion, and said supporting wheel being displaceable against resilient opposition about said pivot during operation.
Dependencies are inferred from the claim text.