TILLAGE TOOL Russian patent published in 1997 - IPC

FIELD: tillage of fallows and crop row spacings. SUBSTANCE: tillage tool has tine and flat hoe with cutting blade on front part. Blade is formed as sequence of members arranged in row and defined by intersecting front and rear cylindrical surfaces with guiding curve extending along logarithmic helical line and part of conical surface, whose convex portion is directed toward flat hoe face. Inclined cutting edge on front part of cylindrical surface is thinning in the direction of subsequent member, which is in overlapped relation relative to previous member. EFFECT: increased efficiency, simplified construction, wider operational capabilities and enhanced reliability in operation. 6 dwg