HAND-HELD TILLAGE TOOL Russian patent published in 2002 - IPC

FIELD: agriculture. SUBSTANCE: working tool has U-shaped double- sharpened cutting edge with elongated side opposite to shank attachment bracket. Cutting edge section is made in the form of continuous or hollow rhomb. Cutting edges of elongated part are made convex, with convexity radius of at least 2/3 the length of cutting edge. Shank section is made rectangular, with rounded corners. Shank is connected with bracket in axially aligned relation with respect to center of gravity of U-shaped cutting edge. Member for changing position of cutting edge elongated part surface with respect to shank longitudinal axis is spaced from cutting edge by distance equal to double-triple length of shank section diagonal line. Angular position of cutting edge surface with respect to shank axis may be changed up to 135 deg. EFFECT: increased efficiency, wider operational capabilities and increased strength. 2 cl, 5 dwg