PLOUGHSHARE FOR SUBSURFACE BROADCASTING Russian patent published in 2011 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: ploughshare comprises a centre hoe, a hollow stand, a seed distributor with a curvilinear surface and a guide block with a spring. The seed distributor with the curvilinear surface is spring-loaded relative to the body of the hollow stand of the ploughshare by the spring with the possibility of reciprocal motion along the vertical guide within complete opening or closing by the seed distributor base with the curvilinear surface of the output hole of the ploughshare hollow stand. In the rear and lower part of the seed distributor with the curvilinear surface there is a roller installed with a horizontal axis of rotation. At the same time the axis of the roller is perpendicular to the longitudinal-vertical plane of the seed distributor with the curvilinear surface. Besides, the roller due to power closure with the spring of the seed distributor with curvilinear surface is in permanent contact with the guide block and the spring. The guide block is a link-lever mechanism, downward rotation of which in the longitudinal-vertical plane is limited with a stop on the ploughshare.

EFFECT: invention provides for increased evenness of seeds distribution along the sowing area at the specified depth and reduction of time for interruptions caused by clogging of space under the ploughshare.

4 cl, 3 dwg