Soil cultivating implements
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
An implement has rotatable cultivating members that are driven to rotate about upwardly extending axes. Each member includes a horizontal support arm and downwardly extending tools journalled at each end of the arm for free rotation. Along the length of each tool, are radial, superposed soil-working elements that are flat; the lowermost element can have cutting edges. The elements are separated from one another by spacer sleeves and are angularly offset relative to one another. Also, the elements can be different in configuration from one another and in one version, the tools are rotatable about axes that converge towards the axis of rotation of the corresponding member. When rotated and moved through the soil, the elements work ground at different levels to intermix the soil.
Claims6
A rotary harrow implement comprising a frame and a transverse row of soil working members journalled along the length of an elongated portion of said frame, driving means connected to rotate said members about respective upwardly extending shafts which define the axes of rotation of said members, each member comprising two soil working tools that are diametrically positioned relative to its axis of rotation, the tools on neighboring members being positioned to work overlapping paths, each member comprising substantially horizontal support arm means with opposite end portions and said end portions each mounting freely rotatable tools that depend from said arm means, said tools each comprising superposed elongated flat soil working elements that project outwardly and substantially straight with respect to the axis of tool rotation, said elements extending substantially parallel to a plane perpendicular to said tool axis, the ends of the uppermost flat element being positioned to describe a path adjacent the axis of rotation of a neighboring soil working member, said tool axes being downwardly convergent towards one another and towards the axis of rotation of the respective soil working member.
Dependencies are inferred from the claim text.