Cultivators

A cultivator comprising a frame and a first soil-working rotor of bar-like configuration rotatably mounted on said frame with driving means connected to said first rotor, a second soil-working rotor rotatably mounted on said cultivator in driving connection with said driving means, said first rotor comprising an elongated support and soil-working means being secured on said support, said rotors being rotatable on corresponding horizontal axes and located one behind the other, rigid means for fixing the relative positions of said rotors on said frame to work soil at different depths and for positioning said first rotor substantially entirely below the surface of the ground to work sub-soil, said first rotor having an effective diameter that is substantially smaller than that of said second rotor.

A cultivator comprising a frame and a first soil-working rotor of bar-like configuration rotatably mounted on said frame with driving means connected to said first rotor, a second soil-working rotor rotatably mounted on said cultivator in driving connection with said driving means, said first rotor comprising an elongated substantially horizontal support and soil-working means being releasably secured on said support, said first rotor being located behind the second rotor and rigid means for fixing the relative positions of said rotors on said frame to work soil at different depths and for positioning said first rotor substantially entirely below the surface of the ground to work sub-soil, said first rotor having an effective diameter that is substantially smaller than that of said second rotor.

A cultivator comprising a frame and a first soil-working rotor of bar-like configuration rotatably mounted on said frame with driving means connected to said first rotor, a second soil-working rotor rotatably mounted on said cultivator in driving connection with said driving means, said first rotor comprising an elongated support with soil-working means being releasably secured on said support and said rotors being rotatable about corresponding substantially horizontal axes, said rotors being located one behind the other, said first rotor being connected to said frame by pivotable arm means and said arm means being settable to position said first rotor substantially entirely below the surface of the ground to work sub-soil, said second rotor including central support means that is journalled to said frame.