Soil cultivating machines

A soil cultivating machine comprising a frame and a plurality of rotatable soil working members mounted along the length of an elongated portion of said frame, said portion being hollow and extending transverse to the direction of travel, each of said members including an upwardly extending shaft that defines a respective axis of rotation, the lower end of said shaft comprising a carrier and a single tine fastened to said carrier, the upper end of said tine being a fastening portion and an operative portion depending from said fastening portion, said operative portion being eccentric relative to said axis of rotation, a curved portion joining the fastening and operative portions, at least the majority of said curved portion being located eccentrically of the center of said fastening portion and said curved portion also being positioned substantially eccentric relative to said rotary axis, adjacent said fastening portion, a supporting member positioned at each side of the frame portion and each supporting member comprising an upwardly displaceable, upwardly extending part that slideably co-operates with guide means, said guide means being supported on a substantially vertical side plate that closes the hollow frame portion and said guide means being resiliently movable with respect to the remainder of said frame portion.