COMBINED DISC-COMMON PLOUGHSHARE Russian patent published in 2009 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: present invention pertains to agricultural engineering. The ploughshare has housing with an assembly for fastening it to the draw-bar of the ploughshare beam, a flat disc, mounted on an axle at an angle to the direction of motion, seed and fertiliser guide, seed scatterer-distributor and an anchor-scrapper bar. The anchor-scrapper bar consists of two side walls. The outer side wall is in form of a curved vertical wall and stretches along the outer side of the seed and fertiliser guide about the disc, with turning of its front part - protective cover-scrapper, at an angle equal to or less than friction angle of the soil about the working face, until contact with the disc. The lower edge of the outer side wall is provided with a flat plow blade. The blade is fitted at angle of crumb formation not greater than 15° with smooth-concave mating by radius of 20…30 mm with its vertical wall. The middle part of the seed and fertiliser guide curved in by radius of not less than 80 mm at an angle 20-30° to the vertical in the reverse direction. The bottom part of the seed and fertiliser guide is in form of a funnel, widened on the working width and narrowing along the height, forming a seeding slot at the bottom. On the inner bottom of the funnel, there are fan-shaped guide elements, widening from top to bottom. On top of the funnel, there is a cover on a hinge with a visor.

EFFECT: sowing seeds in rows with increase of the width of the rows to 6-8 cm, with provision for compact seed beds.

4 dwg