PNEUMATIC SEEDING UNIT Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has casing, seeding disk mounted in casing, and seed agitator. Working faces of additional agitator blades define in conjunction with agitator end face at side adjoining to seed chamber double-sided acute angles oriented toward seeding disk rotation direction. Rib of double-sided angle positioned between working face of each additional blade and end face of agitator is extending tangentially to concentric base circle of additional blades. Ribs of additional blades, which are faced to flat part of agitator base, define angle larger than double angle of friction of seeds against agitator surface. EFFECT: increased quality of feeding single seeds and reduced power consumption. 5 dwg