Seeder with pivoting soil breakers
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
A soil cultivating implement has a row of pivotable soil working members linked to a transverse beam of the frame and individual eccentrics are connected to the members to raise and lower soil engaging portions thereof. The portions are pivoted so that the rear parts thereof move through greater amplitudes than front parts of the portions. The frame can be supported by ground wheels which in transport position elevate the soil working members above the ground and this can be accomplished with hydraulic assemblies. The front of the frame can have a resilient coupling to a prime mover to reduce shocks induced by the eccentric drives. Dispensing mechanisms can be positioned to the rear of the soil working members to dispense and/or seed the worked ground.
Claims22
A soil cultivating implement comprising a frame and a plurality of soil working members being pivotably connected to said frame by corresponding polygonal linkages, driving means connected to rock said linkages and pivot said members up and down about substantially horizontal axes during operation, said members comprising fastening portions and forwardly extending soil working portions that are vertically displaced during operation to loosen soil, the amplitude of repetitive vertical displacement of points along the lengths of said soil working portions being greater rearwardly from their leading ends, at least one polygonal linkage having vertically spaced apart pivotal axes that extend substantially horizontally transverse to the direction of travel and said pivotal axes being located at different levels and behind one another, said linkage having two forward pivots interconnected to the frame and two trailing pivots interconnected to the fastening portion of said member, the distance between the two forward pivots being less than the distance between the two trailing pivots when viewed from the side.
A soil cultivating implement comprising a frame and a plurality of soil working members being pivotably connected to said frame by corresponding quadrilateral linkages, driving means connected to rock said linkages and pivot said members up and down about substantially horizontal axes, said members comprising upper fastening portions and lower soil working portions that extend forwardly to leading ends, said soil working portions being driven through repetitive vertical movements and the amplitude of vertical displacement of points along the lengths of the soil working portions being greater rearwardly from their leading ends, at least one of said linkages having four vertically spaced apart pivotal axes that extend substantially horizontally transverse to the direction of travel and said pivotal axes being located at different levels, behind one another, said linkage having upper and lower links and the forward ends of the links being pivoted to the frame, the trailing ends of the links being pivoted to the fastening portions, the distance between the pivotal axes that connect the links to the frame being less than the distance between the two pivotal axes that connect the links to said fastening portions, whereby the leading ends remain at substantially constant depths below the ground, means supporting the frame and soil working portions at any one of a plurality of different levels during operation.
Dependencies are inferred from the claim text.