SOIL SURFACE TILLAGE TOOL Russian patent published in 2006 - IPC A01B49/02 A01B35/00 

FIELD: agricultural engineering.

SUBSTANCE: tillage tool has frame with attached apparatus, plow beams and working devices. Each of working devices has tine with hoe. Working devices are secured to triangular frames mounted on tillage tool frame through plow beams of different sizes for movement in longitudinal-vertical and transverse-vertical planes. Tine of each working device is inclined to the rear side and is equipped with cutting edge having variable sharpening angles throughout the whole height thereof, with minimal angle being provided on tine part adapted for tilling soil surface layer. Flat A-hoe is fixed to tine rear wall. Cutting edge provided on hoe wings is defined by front face sharpened portion having variable sharpening angle reducing from tine toward free end of each wing. Each of working devices comprises restricting slide having adjustable height. Covering chain is disposed rearward of working devices.

EFFECT: increased efficiency owing to complete removal of weeds, improved quality of tilling top layer with leveled seeding bed, and provision for eliminating drawing out of erosion-dangerous soil particles onto soil surface.

3 cl, 2 dwg