HARROW OF LN BURKOV'S DESIGN Russian patent published in 2008 - IPC A01B19/02 

FIELD: agriculture, equipment.

SUBSTANCE: harrow comprises a frame and two fixed shanks. The shanks are made of metal stripes set vertically in parallel rows over the same pitch and curved in the vertical longitudinal plane in sine or cosine pattern. Removable rippers are attached to the side surface of the stripes at the tops of sine or cosine curve, transversely to the movement direction. The rippers have semicircle or triangular prism section. At the lower face of each shank additional removable round rippers edged to a cone are attached at equal pitch. The additional rippers are tilted at sharp angle to the right or left from the vertical alternately. In the horizontal plane the right and left edge shank rows stretch to the whole harrow grip width. The other rows reach only half a width of the harrow grip and are alternately shifted against each other to half a pitch. A hydraulic cylinder is installed pin-down in the middle of the frame and joined to the subframe by a swivel. The subframe is fixed to the harrow shanks by the vertically mobile struts. Two weight boxes are placed symmetrically on the harrow frame, and there are two balancing wheels at the harrow sides.

EFFECT: intensive and qualitative soil tillage.

4 dwg