Rotary soil working machine

Claim 1

A rotary soil working machine comprising a shaft mounted to rotate on a horizontal axis extending transverse to the direction of travel of the machine, and a plurality of generally radial members secured to the shaft and lying substantially in a common plane perpendicular to the shaft, wherein the improvement comprises a sod-lifting arm extending from the end of each of the radial members, consisting of a substantially flat plate which is L-shaped in outline and lies substantially in a plane that is perpendicular to the plane of the radial member and makes an acute angle with a radius drawn from the horizontal axis of the shaft to the outermost point on the leading edge of the radial member, the base portion of the L-shaped plate having substantially parallel sides which are inclined forward from the radial member in the direction of rotary travel, and the stem portion of the L-shaped plate having substantially parallel sides which are inclined backward from the base portion, all of the Lshaped plates lying on the same side of the plane of the radial members.