ROTARY WORKING TOOL FOR CULTIVATOR Russian patent published in 2008 - IPC A01B35/16 A01B39/08 

FIELD: agricultural engineering, in particular, equipment for inter-row cultivation of soil in protecting zone of plant row.

SUBSTANCE: rotary working tool has pin positioned at an angle to vertical plane, flat disk provided with safety belt and mounted on pin. Part of spherical surface with teeth of various length attached thereto is secured to lower part of disk. Teeth are fixed on spherical surface along the shortest curves extending from center to periphery of disk. Each subsequent skew tooth arranged on curve line, beginning from periphery of spherical surface to its center, has length exceeding that of previous tooth. Line drawn through apexes of teeth arranged on curve defines, in conjunction with radius of disk, an angle of 10-15 deg, and inclination angle of working tool pin to transverse-vertical plane is 4-6 deg.

EFFECT: improved quality of soil cultivation in tilled crop spacing due to uniform rotation of disk and improved soil mellowing throughout the entire plow depth.

2 dwg