DISC-HOE OPENER Russian patent published in 2015 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: opener comprises a housing with its fastening unit to a leash, a flat disc, an anchor-scraper bar, a seed-fertiliser guide, a distributor, a visor-reflector and a covering unit. The disc is placed at an angle to the direction of movement. The anchor-scraper bar is made with outer and inner sidewalls. The distributor is made as a socket. The covering unit has a spring-loaded leash and a soil-guide. The anchor-scraper bar is equipped with a removable flap-partition mounted between its sidewalls, and the limiters-guides. The flap-partition is attached to the bottom of the distributor socket. The flap-partition is made in the form of a curved spring plate, the lower part of which is parallel to the lower edges of the sidewalls. The limiters-guides are placed at the lower part of the walls of the sidewalls. The covering unit is attached to the seed-fertiliser guide through the bracket with a vertical slot for its leash and is made in the form of a horizontally positioned arc-shaped clamp. The width of the clamp is not greater than the distance between the axes of the coulters. The leash of the covering unit is provided with a vertical compression spring. The soil-guides are rigidly secured to the ends of the clamp at an angle of α=30°…50° to the direction of movement with the distance between their inner ends in the longitudinal direction of 3…10 cm.

EFFECT: increase in reliability of band seeding and quality of seeding-down in different soil and climatic conditions, including in waterlogged soils.

2 cl, 2 dwg