SEEDING UNIT Russian patent published in 1997 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has cylindrical casing 1 mounted on bearing 2, immovable cylinder 3 with vertical channels 4 on its outer surface, lock valve 5 with inclined channels 6, which are joined at their upper ends with channels of cylinder 3 and at their lower ends with seed discharge unions 7, hopper 8, drive 9 and frame 10. Lock valve 5 is made in the form of cylindrical washer and is secured from below to immovable cylinder 3 by lock screw. Channels 4 of cylinder 3 and inclined channels 6 of lock valve 5 have different sizes and semicircular section. Immovable cylinder 3 has upper part made in the form of paraboloid of rotation. EFFECT: increased efficiency by uniform distribution of seeds along furrow during advancement of drill. 3 cl, 1 dwg