Patent attributes
The present concept is a stump auger used for cutting a tree stumps, the stump auger includes a main shaft with a top end for coupling to a drive mechanism for turning the shaft about a vertical axis, wherein the main shaft is connected at a bottom end to a cone top. The stump auger cone includes a spiral thread extending about the outer surface of the cone from the cone top to the cone bottom. The stump auger further includes at least two boring bars connected to the main shaft, each boring bar includes at least two third blades which include a blade edge on a front face for cutting the tree stump as the stump auger is rotated about the vertical axis. Each successive third blade lies along successive planes, each third blade higher along the vertical z-axis.
