SEEDING UNIT Russian patent published in 1999 - IPC

FIELD: agricultural engineering, in particular, agricultural and forest crop seeding equipment. SUBSTANCE: seeding unit has seed box with adjustable valve, two couplings loosely mounted on shaft of each seeding unit. Disk positioned between couplings on shaft has left half, flexible ring and right half. Flexible ring is rigidly connected with disk halves. Springs are positioned in ring cavity to provide reliable adherence of flexible ring to disk halves. Outer surface of flexible ring is made parabolic. Adjusting sleeve with handle is mounted to the right of disk on shaft by means of pin pressed into shaft. Right end of handle is formed as beveled tooth provided with scale. Spring is mounted on sleeve outer surface by means of lock ring and washer. Left end of spring abuts against coupling, which is joined with its left end to disk. Marking is disposed on shaft positioned opposite scale. EFFECT: increased versatility of seeding unit by using it for sowing of wide range of crops, precise seeding and enhanced reliability in operation. 2 dwg