TILLAGE MACHINE Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: tillage machine has bearing frame with attached device, carrier wheels adjustable in vertical plane, mellowing hoes with tines adjustable in vertical plane and arranged in row, and working tools arranged behind tines and rotating in paired-opposite directions of rotation, and leveler. Rotating working tools are driven from tractor power shaft through cardan shaft and reducer rigidly fixed on crankcase provided with toothed wheels. Rotating working tool is made in the form of screw. Each coil of screw is composed of two half disks covering radius of 360 deg and rigidly secured by screws to half flanges welded to rotor shaft. Cutting-ripping knives are rigidly fixed between half disks and secured by screws on flanges. Knives have blade curvature radii corresponding to Archimedes' spiral. Length of knives exceeds radius of half disks by value corresponding to adjacent hoe spacing. EFFECT: simplified construction and improved quality of soil tillage. 7 dwg