Soil cultivating implements

A rotary harrow comprising a frame and a plurality of soil working members rotatably mounted on said frame and driving means connected to rotate said members, said soil working members being arranged in two adjoining groups and each group being carried by a corresponding hollow frame portion, an elongated supporting frame overlying the frame portions and means linking the frame portions to said supporting frame, said harrow being positionable in an operative position in which the supporting frame extends transverse to the direction of travel with front and rear wheels, the angles of rotation of said wheels being settable about upwardly extending axes at positions at least 90.degree. apart and said wheels being pivoted to the supporting frame with corresponding arms, spaced apart linkages interconnecting said frame portions with said supporting frame, said frame portions together with their soil working members being vertically displaceable relative to said supporting frame during operation, a front two of said ground wheels being located in front of the supporting frame and a rear two of said wheels located at the rear side of that frame, with respect to the direction of operative travel, the axes of rotation of the front wheels and the rear wheels being respectively coincident when in said positions, said two rear wheels being spaced further from the longitudinal center line of said supporting frame than the two front wheels, during operative travel coupling means adjacent one end of the supporting frame for connection to a prime mover for moving said harrow during transport.