COMBINED TILLAGE TOOL Russian patent published in 1998 - IPC

FIELD: equipment for presowing preparation of soil in individual lands. SUBSTANCE: combined tillage tool has frame, hitching device, wheels and tillage tool penetration depth regulating mechanism. Disk batteries, hoes and rollers are arranged in succession on frame. Rotary plates with wedge-shaped sharpened and truncated pyramid-shaped teeth are positioned between disk knives of batteries. Three-faced, double-sided wedges are mounted on hoe working surfaces, and rods are arranged adjacent to rear face of wedges. Ends of rotary bars are attached to outer disks of rollers. Bars are provided with arced teeth inclined at an angle to roll axis. By rotating plates through 180 deg and bars through 90 deg, batteries are converted into needle-type drum and clod-breaking roller is converted into spiral roller. Such construction allows soil quality to be improved at any tillage tool penetration depth, and wind-and-water resistant mellowed soil layer to be formed. EFFECT: increased efficiency and improved soil quality. 10 dwg