CULTIVATOR WORKING TOOL FOR PRESOWING SOIL TILLAGE Russian patent published in 1997 - IPC

FIELD: agricultural engineering. SUBSTANCE: working tool has double-edged tine with rear wall and A-hoe with front cutting edge fixed on tine rear wall. Upper face of rear wall is extending in horizontal plane and is provided with supporting platforms spaced along its length. Semicylindrical recesses are made on front and rear supporting platforms in symmetry with longitudinal axis. Trapezium- shaped projection positioned on rear supporting platform behind semicylindrical recess is conjugated with dovetail slot in rear part of A-hoe. Tip and rear part of A-hoe are mated with rear and front supporting platforms and with rear wall of tine by countersunk-headed bolt. Rear wall has variable section along its length and is smoothly conjugated with lower end of tine. EFFECT: increased efficiency, simplified construction and improved quality of tilled soil. 2 cl, 4 dwg