STUMP CLEARING DIGGER-COLLECTOR Russian patent published in 1997 - IPC

FIELD: agriculture and forestry. SUBSTANCE: undercutting tooth of digger-collector is in the form of shank with single-side foot. Turning axle of undercutting tooth is located at angle to lateral vertical and horizontal plane of basic self-propelled chassis. Vertices of angles are directed towards longitudinal vertical plane of self-propelled chassis. Frame lifting-lowering device is provided with freewheeling mechanism. Turning axle of undercutting tooth is located respectively at angle of 0.26 - 0 and 0 - 26 radians to lateral vertical and horizontal planes. Shank of undercutting tooth at its outer side is made with single-side sharpening at angle of 0.5-1.0 radian relative to longitudinal and vertical plane of self-propelled chassis. EFFECT: high efficiency. 2 cl, 4 dwg