FIELD: forestry. SUBSTANCE: machine has frame carrying feeding hopper with discharge slot, cylindrical brush-type feeder with brushes positioned under feeding hopper bottom so as to cooperate with gate mounted in hopper discharge slot. Gate is made in the from of comb with oval section rods which are fixed so that their angle of rotation about their axis may be changed and fixed. Rods are arranged one below the other and inclined to opposite sides of screen. Machine is further provided with device for changing screen inclination angle, and drive for imparting vibratory motion to screens. EFFECT: increased efficiency and improved quality of seeds. 5 dwg
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