SEEDING UNIT Russian patent published in 1999 - IPC

FIELD: agricultural engineering, in particular, precision single-seed drilling equipment. SUBSTANCE: seeding unit has housing, hopper, scraper roller, alveolar disk mounted in vertical position within housing and provided with annular bore, seed ejector mounted in annular bore, symmetrical annular slots of rectangular section in its side walls, and sector with spring-loaded end formed as continuous strip positioned within slots and annular bore. Sector has stop disposed at rear side and resting on inner cylindrical surface of annular slot. Stop is formed as cylindrical pin pressed in sector body and axis of stop is perpendicular to sector plane. Radial strip is loosely positioned in cavity between flat spring end and seed ejector for preventing seeds from being pinched between ejector and inner end of alveolus and, consequently, for eliminating seed damage. Sector is coupled with housing through screw mechanism positioned adjacent to rear side of housing and having projecting portion of sector with scale and through opening, with screw being positioned in through opening. Screw is conjugated by threaded connection to bracket secured on rear wall of seeding unit. Compression spring is disposed between sector and bracket, with longitudinal axis of compression spring coinciding with screw axis. EFFECT: simplified construction and maintenance, improved quality of young crops. 3 cl, 5 dwg