CULTIVATOR WORKING TOOL Russian patent published in 1998 - IPC

FIELD: agricultural engineering, in particular, tillage machines for cultivating compressed soils in irrigated agriculture. SUBSTANCE: working tool has curved graft knife of variable thickness, soil deformer and device for retaining soil deformer on tine. Soil deformer is made in the form of extension spring. Soil deformer retaining device is made as plug mounted on pin and extension spring coil portion oriented in parallel with spring axial line. Bent portion of extension spring coil is arranged in tine dead opening. Pin threaded opening and dead opening are positioned in parallel one with respect to another. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 dwg