COMBINED PLOUGHSHARE Russian patent published in 2009 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: ploughshare comprises stand with flat hoe mounted in lower part and arranged in stand cross section, and disk knife. Behind stand there is a seed feeding line. Disk knife with cutting edge on external diametre is equipped with furrow maker. Furrow maker is arranged in the form of oppositely arranged hollow truncated cones with large bases, which are coupled with flanges in the form of hollow cylinders mounted on axis of rotation. Hoe consists of two single-sided flat hoes, which are installed as coupled by upper edge of hoe to lower base of furrow maker truncated cone at the level of flanges. Single-sided flat cutting hoes have soil guides. Lower cutting edge of single-sided flat hoes is installed at the level of disk knife cutting edge. Internal cavity of seed feeding line has ribbed surface with vertically arranged ribs. Distance between protrusions of ribs is less than minimum size of sown culture seed.

EFFECT: such structural design makes it possible to sow couched and soaked seeds without mechanical damage of sprouts, which preserves their high germinating ability.

4 dwg