FIELD: agricultural engineering. SUBSTANCE: working tool has tine and chisel. Tine has two joined sides and blades fixed on opposite faces of sides. Slotted chisel is positioned between tine parts. Thickened part of chisel is formed as portion of ellipsoid of revolution. Lower parts of tine sides are provided with wings oriented in opposite directions. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 cl, 3 dwg
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