COMBINED SOIL TILLAGE TOOL Russian patent published in 1999 - IPC

FIELD: agriculture, in particular, basic soil cultivation equipment. SUBSTANCE: tillage tool has plow-bottom surface and landslide, which are fastened on single tine, and ripper disposed behind plow-bottom surface on other tine. Tine with plow-bottom surface and ripper tine are connected with their upper parts to define single tine whose lower part is split off into two brackets. Plow-bottom surface is attached to one bracket and ripper with landslide is attached to other bracket. Landslide is disposed on ripper wing faced to which is directed resultant horizontal component of soil reaction force acting upon combined soil tillage tool. Lower end of bracket with plow-bottom surface is bent toward its landward edge. Bracket with ripper has adjustable length. Landslide is mounted on ripper at an angle of 2-5 deg relative to direction of travel. Ripper lower edge is positioned at lower level than plow-bottom surface cutting edge. Combined soil tillage tool may be used only with plow-bottom surface or with ripper. Such construction allows compact arrangement of combined tillage tools on frame to be provided and surface tillage of upper layer combined with deep subsurface ripping of soil to be performed. EFFECT: increased efficiency and simplified construction. 5 cl, 4 dwg