| 摘要 |
agricultural engineering. SUBSTANCE: apparatus has support and levers mounted on shaft which is positioned on support. Handle is fixed on one end of levers and working tool is mounted on their other ends. Each working tool has vertical parallel teeth. Apparatus is further provided with auxiliary levers having their own shaft, handle and teeth. Auxiliary teeth are arranged between main teeth and have auxiliary rotational shafts extending perpendicular to axis of rotation of main teeth. Lever shafts are mounted so as to be raised, lowered and fixed in vertical plane. Length of levers may be regulated relative to length of supports. Apparatus may be used for earth mellowing, removal of weeds from mellowed earth and for extraction of roots in the process of harvesting. Such construction allows worker's fatiguability to be reduced. EFFECT: increased efficiency and wider operational capabilities. 3 cl, 16 dwg
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