WORKING TOOL OF CULTIVATOR Russian patent published in 1997 - IPC

FIELD: agricultural engineering. SUBSTANCE: working tool has tine and chisel made in the form of elliptical cone with rounded apex. Flat spring-loaded blade is mounted for rotation between parts of tine and chisel. Blade is positioned in longitudinal-vertical plane. Cutting edge of blade is extending along logarithmic curve whose geometrical center is aligned with blade rotation axis. EFFECT: increased efficiency, simplified construction and improved quality of soil. 8 dwg