DISC HARROW Russian patent published in 2017 - IPC A01B21/08 A01B23/04 

FIELD: agriculture.

SUBSTANCE: invention is intended for loosening the soil, eradicating weeds and levelling the surface before sowing. The disc harrow comprises a frame with transverse beams, vertical discs independently mounted in rows on racks. The disc racks are arranged on the frame by the multiple-flighted screw scans at the points of intersection of helical line scans with the cylinder (crossbar) generatrices disposed equidistant from one another, to allow a disc to cut a separate groove between the grooves disposed at the same distance from it.

EFFECT: reducing the draft resistance.

2 dwg