COULTER FOR BROADCAST SEEDING Russian patent published in 2010 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: coulter includes a center hoe and a hollow rack placed under its output window of seeds distributor. The working surface of the distributor of seeds is formed by two lateral and one rear surfaces. The lateral surfaces of the dispenser are formed by the movement of the two curves of the form of the fifth degree polynomial y=0.0003x⁵-0.0152x⁴+0.2901x³-1.3966x²+2.4538x-0.3433, relative to the longitudinal-vertical plane of symmetry of the coulter. The curves of the form of a polynomial of fifth degree are located in the transverse vertical plane of the coulter and to the right and left of the longitudinal vertical plane of symmetry of the coulter. The lateral surfaces of the distributor at the intersection with the longitudinal-vertical plane of symmetry of the coulter form the edge of the distributor of seeds. The rear surface of the distributor of seeds is a surface formed by the rotation curve of the form of the fifth degree polynomial y=0.0003x⁵-0.0152x⁴+0.2901x³-3966x²+2.4538x-0.3433 at an angle of 180° around a vertical axis passing through the point located at the rear end edge of the distributor of seeds. The rear point edge is the top of back of the seeds distributor. Cross-section with horizontal plane of the working surface of seeds distributor is a rectangle connected with a semi-circle. The sides of the rectangle are tangent to the semi-circle. The height of the distributor of seed refers to its width as 2:5. The rib length of the dispenser refers to the total length of the distributor of seeds as 2:3. The rib of distributor of seeds is made with a radius of curvature r = 1…2 mm.

EFFECT: invention enables to improve uniformity of distribution of seed with coulter on the screening area and better use the width of the coulter, which can increase crop yields.

3 dwg