FLEXIBLE ROTARY HARROW Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: harrow comprises a mounted frame which carries an axially rotating pipe with a driving sprocket which latter can move axially in sprocket hub. Connected to pipe posts with contour-following shoes is a chain line with ripping teeth. Spring-loaded longitudinally-movable rod installed in holder on mounted frame has a catch, and a slide valve whose stem interacts with said catch in the upper working position. Pipe is connected by a transmission linkage to hydraulic drive. As the latter is started, the pipe winds up the chain line. The drive in the end position shuts off the slide valve controlled by the rod catch. EFFECT: improved design. 2 cl, 14 dwg