US Patent 7913431 Ground clearing apparatus

A ground clearing apparatus comprising a box member comprised of a framework having an upper edge, first and second side edges, and a lower edge. A plurality of base teeth protrude downwardly from the lower edge. The apparatus further comprises a grapple including a first grapple arm hingeably attached to the box member, a second grapple arm hingeably attached to the box member, and a cross member joined to a distal ends of the first and second grapple arms. A plurality of grapple teeth extend outwardly from the cross member. The grapple is movable from a closed position in which the grapple teeth are interspersed with the base teeth, to an open position in which the grapple teeth are separated from the base teeth.