SKID-SHAPED SHANK Russian patent published in 1998 - IPC

FIELD: agricultural engineering, in particular, row-crop drill shanks. SUBSTANCE: shank has auxiliary spring-loaded skid-shaped coverer with intersecting conical surfaces positioned at an angle of $$$ one with respect to another and at an angle of $$$/2 with respect to vertical plane, with conical surfaces intersection line extending along arced line with radius R. Skid-shaped coverer compresses furrow side walls without shifting soil with seeds in longitudinal direction. EFFECT: increased efficiency by uniform seed distribution and improved contact of seeds with soil and reduced injure to seeds. 4 dwg