Soil working machine
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
A soil working machine pivotably mounts at least one rotor having serrated working elements. The rotor is pivotally connected at each end to a frame beam by a pin which can be inserted into either one of two holes located one above the other. The hole chosen governs the resistance to upward pivoting of the rotor. The machine can be hitched to a tractor either with the frame beam substantially transverse of the intended direction of operative travel, or with the frame beam inclined to this direction. Each rotor has end plates that mount forward blades and the outer plate supports a gear transmission to the rear of the respective blade.
Claims22
A soil working machine comprising a frame and a rotor pivotably supported on said frame, said rotor comprising soil working means on a carrier mounted for rotation about a non-vertical axis that extends generally transverse to the direction of machine travel and driving means connected to drive said rotor about said axis during operation, said rotor being connected to said frame by either one of two pairs of pivotal connections, the connections of each pair being spaced from one another in a direction transverse to the direction of machine travel and comprising pivot pins having registering pivotal axes, the respective pivotal axes coinciding with the longitudinal center lines of corresponding pins which can be inserted into openings in plate means to define said pivot connections, said plate means having a plurality of openings and said pins being insertable in any of said openings to define respective pivot connections at different level settings, whereby the resistance to upward pivotal deflection by said rotor can be changed.
A soil working machine comprising a frame and a rotor pivotably supported on said frame, said rotor comprising soil working means on a carrier mounted for rotation about a non-vertical axis that extends generally transverse to the direction of machine travel and driving means connected to drive said rotor about said axis during operation, said soil working means comprising a plurality of flat members and each member having an outer curved serrated periphery that defines the operative surface of said rotor, the said periphery of each member being curved and extending over a circumferential angle of about 180.degree. and said curve being substantially an involute.
A soil working machine comprising a frame and a rotor pivotably supported on said frame, said rotor comprising soil working means on a carrier mounted for rotation about a non-vertical axis that extends generally transverse to the direction of machine travel and driving means connected to drive said rotor about said axis during operation, said frame having a coupling for connection to the lifting device of a tractor, said coupling including adjusting means that positions said carrier obliquely to the direction of machine travel, said soil working means comprising a plurality of flat elements that lie in a plane substantially perpendicular to the rotor axis of said carrier, said coupling comprising two coupling points for the lower arms of the lifting device and said coupling points being located at different distances from the frame, said coupling points comprising two brackets of different lengths to which lower arms of said lifting device are fitted, said brackets being replaceable one by the other and releasably connected to support members on said frame, said support members having different lengths, the total length of the shorter bracket and the longest support being substantially equal to that of the longer bracket and the shorter support.
Dependencies are inferred from the claim text.