PNEUMATIC SEED-SOWING DEVICE Russian patent published in 2009 - IPC A01C7/04 

FIELD: agricultural industry; mechanics.

SUBSTANCE: seed-sowing device consists of a casing with a seed vessel, a vacuum vessel, and a seed plate with suction clutches, which is installed between them. According to the first version suction clutches are made in the form of two equal square holes. The first hole is located on a seed plate radially. The second hole is located tangentially. Radial and tangential holes meet at their central parts thus forming a cross. According to the second version a radial hole adjoins the central part of the tangential hole on the side facing the centre of a seed plate. According to the third version suction clutches are made in the form of two equal square holes. The holes are located radially and tangentially and meet at central parts. In the centre of holes' crossing there made is a round hole.

EFFECT: improving seed measuring quality.

2 dwg