TILLAGE TOOL Russian patent published in 1999 - IPC

FIELD: agricultural engineering. SUBSTANCE: tillage tool has frame, left and right rollers positioned at an angle to tillage tool traveling direction. Each roller is formed as truncated cone. Helical spiral fixed on surface of each roller has opposite coils. Spiral is made toothed (corrugated) with fixed coil pitch, multiple-thread and is cantilevered on small cone bases for providing uniform soil tillage at roller junction zone. Tillage tool may be used for soil leveling, compaction and covering. EFFECT: increased efficiency by uniform and constant rotation of rollers and improved quality of soil. 2 cl, 2 dwg