Soil working machine with resilient support and trailing, rigid control arm
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
A soil working machine, such as a cultivator, has a frame beam to which a working element is connected by a support. The support is resilient or resiliently mounted and can deflect when the working element meets an obstruction, or heavy ground resistance, but the working element maintains its orientation in the soil. A control rod coextends with the support and four pivot points enable the element to be displaced without loosing its orientation. The working element is pivotally connected to the support by a pivot pin and the control arm also can be pivoted to that element. In a variant, the control arm is eliminated and a V-shaped share is hinged to pivot up and down between stops.
Claims8
A soil working machine comprising a frame and at least one soil working member pivotably mounted for displacement on said frame, said member comprising a forward, upwardly extending resilient support and a trailing, rigid control arm, a generally horizontally extending soil working element being pivoted to the lower portions of said support and arm by respective pivots, the upper portions of said support and arm being interconnected to said frame by pivot means, said pivot means including at least one pivot that defines an axis parallel to the axes of said pivots, said control arm having an intermediate curved portion between its upper and lower portions and said curved portion being directed rearwardly with respect to the direction of travel of the implement, whereby said support can deflect rearwardly and said element maintains its working position, a stop being located adjacent said element for limiting the pivotal movement of said element in at least one direction.
A soil working machine comprising a frame and at least one soil working member pivotably mounted for displacement on said frame, said member comprising a forward, upwardly extending resilient support and a trailing, rigid control arm, a generally horizontally extending soil working element being pivoted to the lower portions of said support and arm by respective pivots, the upper portions of said support and arm being interconnected to said frame by pivot means, said pivot means including at least one pivot that defines an axis parallel to the axes of said pivots, said control arm having an intermediate curved portion between its upper and lower portions and said curved portion being directed rearwardly with respect to the direction of travel of the implement, whereby said support can deflect rearwardly and said element maintains its working position, said support having an upper portion that is bent forwardly to loop over a beam of said frame and said upper support portion being fastened to said beam.
Dependencies are inferred from the claim text.