WORKING TOOL OF HAND-HELD TILLAGE UNIT Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: working tool has blade with trough-shaped part adjoining to receptacle portion. Cutting edge of blade and axial line of shank attachment receptacle are arranged so that they are positioned at an angle of 15-120 deg to one another on projection in any plane extending tangentially to blade front surface and at an angle of 30-110 deg to one another on projection in plane extending in parallel with axial line of shank attachment receptacle and perpendicular to first plane. Working tool of such construction is preferably used in horticulture for soil cultivation and weed control and reduces force needed for soil cultivation. Blade imparts advantageous properties to soil. EFFECT: simplified construction, enhanced reliability in operation, increased wear-resistance of cutting edges and improved soil ameliorating effect. 42 cl, 29 dwg