| 摘要 |
FIELD: agriculture.SUBSTANCE: hand tool for soil cultivation relates to agriculture and can be used in private households, at summer cottage and wherever necessary to conduct deep tillage. Manual tool comprises teeth arranged on crossbar, a cartridge and a handle. For deep tillage with reciprocal movement, at least one tooth has maximum length. Adjacent teeth are successively reduced to a value of smallest tooth. Open ends of teeth lie on a curve with a radius of curvature R. Ratio of length of smallest tooth to length of largest tooth ranges from 1/2 to 1/5.EFFECT: such design of tool provides deep quality treatment of soil.1 cl, 3 dwg |
