Patent ID: 7640995

Claim:
An apparatus for soil conditioning for transport through a field in an advancing direction, the apparatus comprising: a frame defining a frame axis perpendicular to the advancing direction; a plurality of rotary spiked toothed harrow having opposing ends; said one end of said rotary spiked harrow mounted to a support member attached to an outer end of said frame; said second end of said rotary spiked harrow mounted to generally center of a rearward portion of said frame; said plurality of rotary spiked toothed harrow includes a multiple of spiked tooth members; an adjustment mechanism is provided between said outer end of said frame and to said support member; said plurality rotary spiked toothed harrow supported by the frame for engaging the soil and extending along a harrow axis, the harrow axis being angled at a user adjustable acute, harrow angle with respect to the frame axis; said plurality of rotary spiked toothed harrow adjusts with respect to said frame axis and to said harrow axis by said adjusting mechanism; and a plurality of disks supported by the frame and in front of the plurality of rotary spiked tooth harrow along the advancing direction for rotation about a disk axis and for engaging soil below the frame, each disk including a scalloped peripheral edge that forms a plurality of teeth and a space between each two adjacent teeth, each tooth including a leading concave cutting edge and a following convex edge wherein, as each disk rotates, the leading concave edge of each tooth enters the soil prior to an associated following convex edge, each tooth further including a forward pitch angled toward the leading concave edge; wherein: the disk axis being angled at a user adjustable acute, disk angle with respect to the frame axis; and the disks are arranged to form ripple grooves in the soil that extend along the advancing direction and the rotary harrow is arranged to form diagonal grooves that are angles with respect to the advancing direction and wherein the grooves formed by the harrow form an 18° to 45° angle with the grooves formed by the disk blades.