WORKING TOOL OF MANUAL SOIL TILLAGE UNIT Russian patent published in 1997 - IPC

FIELD: agriculture, in particular, soil tillage and weed control. SUBSTANCE: working tool has blade with cutting edge on front surface. Bending line of blade is positioned at an angle of 80-140 deg and blade cutting edge is positioned at an angle of 0-40 deg relative to plane extending along supporting platform and at an angle of -30 to +20 deg relative to plane extending perpendicular to first two planes. Bent portion of blade may be connected with shank by bracket with supporting platform. Blade bending line is spaced from supporting platform by distance equal to 0 to 2/3 of blade length. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 cl, 3 dwg