STUBBLE SEEDER COLTER Russian patent published in 2009 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: colter includes pole with ripper tooth, seed and fertiliser duct and duckfoot. Ripper tooth is fixed ahead of colter duckfoot point with the help of bracket. Bracket is installed on the colter pole. Colter duckfoot is fixed to colter pole base. Axial sectional elevation of bracket front active face is an arc tangent curve defined by equation y=arctg x/2. Ripper tooth is fixed to the bracket front at the function increase region of arc tangent curve y=arctg x/2. Ripper tooth fixing point on the arc tangent curve coincides with crossing point of tangent line drawn to arc tangent curve y=arctg x/2 at an angle of 25° to horizontal, the said tangent line coinciding with ripper tooth active face.

EFFECT: such embodiment will ensure stability of colter depth travel, decrease draught resistance and increase accuracy of seeding depth and width, lower colter clogging while working on wet, heavy and stony soils and increase field reliability of stubble seeder colter.

9 cl, 3 dwg