DOUBLE-TIER POTATO DIGGER-WINDROWER Russian patent published in 2002 - IPC

FIELD: agricultural engineering. SUBSTANCE: potato digger has undercutting shanks, rod-type separating elevators, and top remover. Two disks mounted on single shaft above upper run of main separating elevator are equipped with rim. Disks are in contact with rear side of carrier belts of elevator on the arc of circle of at least 180 deg. Fingers are fixed at predetermined interval along circles concentric to rims. Tuber receiving web is put onto fingers and tightened by means of front windrower arranged above shanks such that adjustable gap is formed between upper run of main elevator and lower run of tuber receiving elevator. The value of front part of gap corresponds to thickness of tuber layer and is gradually reducing in the course of advancement of elevators to size equal to that of largest tubers. EFFECT: simplified construction and increased efficiency by intensified top separation process. 3 cl, 2 dwg