SEEDING UNIT Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has casing, seed hopper, roller-type baffle and shaft-mounted seeding disk. Shaft is positioned for axial displacement. Spacer bushings are mounted on shaft for axial displacement and adapted for receiving even parts of rings defining cells. Odd parts of rings, which also define cells, are mounted on shaft and on additional spacer bushings. Shaft, cell-defining parts of rings and spacer bushings are moved by handle fixed on shaft. Springs are mounted between casing and seeding disk. Handle is equipped with springy retainers formed as pins, and casing is provided with circumferential pin receiving holes. Seeding unit is designed for precise drilling of seeds of different fractions without disassembling and replacement of seeding disk. EFFECT: simplified construction and increased efficiency. 3 dwg