Patent for an earth-auger meant to dig post-holes. It has a lateral "cutting-edge and a continuous cutting-edge from its point to its top, said cutting-edge receding continuously and uniformly from the axis of rotation of the tool, whereby it cuts from the center outward and gradually widens or increases the diameter of the hole at any given point until this point is reached by the periphery of the ears or basin at the top of the bit, and, furthermore, to provide means for packing or smoothing the sides of the hole" (lines 13-23).