| 摘要 |
FIELD: agricultural engineering, in particular, irrigated agriculture, mellowing of intensively used soil layer. SUBSTANCE: working tool has tine, chisel and ripper. Chisel is made conical with rounded apex. Chisel base has concave-curved surfaces at zone of junction with tine. Auxiliary ripper formed as coiled extension spring is positioned in line with chisel behind tine. Front coils of extension spring are mounted in bracket fixed on lower curved part of tine. Two rows of through openings for receiving spring front coils and one auxiliary opening are made in side surface of bracket, with opening space in two rows being variable. Axis of auxiliary opening is oriented perpendicular to and in intersecting relation with one opening in side surface for receiving spring coil stop. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 cl, 3 dwga
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