TILLAGE TOOL Russian patent published in 1998 - IPC

FIELD: agricultural engineering. SUBSTANCE: tractor-mounted tillage tool has frame and annular working tools with cutting edges. Frame is formed as ring with cutting edges on front and rear parts. Annular working tools are arranged laterally of frame between its parts and made from the same material, from which surface layer of frame ring is made. Frame is mounted for rearrangement so that its cutting edges are oriented in the direction of advancement. EFFECT: increased efficiency, simplified construction and improved soil quality. 2 cl, 4 dwg