EARTH TILLING AND SEEDING UNIT Russian patent published in 1999 - IPC

FIELD: agricultural engineering. SUBSTANCE: unit has working tools adapted for undercutting upper soil layer and formed as A-hoes, device for dispensing seeds in zones under working tools, and covering rollers mounted behind working tools. Covering rollers have at least two sections, each having pin and set of small ring-shaped rollers joined to rotation spindle through spokes and positioned at space of 80-200 mm one relative to another. Sections are positioned at an angle of 55-80 deg to direction of advancement of unit. Each small ring-shaped roller is formed as truncated cone with taper angle of 20-60 deg. Such construction allows continuous compacted soil layer to be formed above sowed seeds and mulch layer to be created from soil, combed weeds and stubble remains. Upper soil layer is undercut without turning of soil layer and simultaneously seeds are sowed. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 cl, 3 dwg