DRILL Russian patent published in 1996 - IPC

FIELD: agricultural engineering. SUBSTANCE: straight drilling machine has bar, two-disk shares 9 mounted on bar through spring-biased tenons, primary furrow cutting devices mounted on brackets in front of shares and formed as loosely rotating disk-type blades 15, covering devices 13, seed box 30 with seeding units, seed guides 32 and other members. Drill is provided with cutting blades 21 positioned in disk-type blade gap. Disk-type blade brackets are formed as double-armed rocking levers 16 engageable with their free end through power regulators 20 with share tenons. Cutting blades are mounted on tie-rods 22 connected with their one end to disk-type blade shafts and with their other end to share tenons through power device. Covering devices are formed as loosely rotating disks. EFFECT: increased stability of straight drilling process, simplified construction and enhanced reliability in operation. 4 cl, 11 dwg