UNIT FOR SEEDING SMALL PORTIONS OF SMALL-SIZED SEEDS Russian patent published in 1998 - IPC

FIELD: agricultural engineering. SUBSTANCE: seeding unit has seed hopper 1, housing 2 with charging window 3 and discharge window 4, seeding member 5 with spherical receptacles 6, sleeves 7, fastening thrust washers 8 and guiding pipe 9. Spherical receptacles 6 have variable section, i.e. from zero section adjacent to charging window 3 to semicircular section continued by rectangular section adjacent to discharge window 4 and having volume equal to seeding norm. EFFECT: increased efficiency, simplified construction and provision for supplying precise portion of seeds. 2 dwg