GENERAL-PURPOSE ROTARY COMBINED UNIT Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: rotary unit has working tools mounted on fixed shafts. Bushing is positioned in spaced relation on rear battery shaft. Lever with stop is immovably positioned on said shaft. Bracket with slide bar and adjustable rigidity spring are mounted on bushing. Spring is adapted for joining lever to bracket. Crusher hangers are pivotally attached to bracket for free motion up to lever stop within the angle of α. less than 45 deg. Beyond said angle of α, knife with crusher, slide bar with bracket and spring define single vibratory system with one degree of freedom. Said unit is preferably used in presowing soil cultivation machines. EFFECT: simplified construction and enhanced reliability in operation. 2 dwg