1.IN A LAND CLEARING APPARATUS, THE COMBINATION COMPRISING A WHEELED CARRIAGE, PRIMARILY ADAPTED TO BE DRIVEN IN A FORWARD DIRECTION; A FRAME PIVOTALLY CONNECTED AT ONE END TO SAID CARRIAGE, THE PIVOTAL AXIS OF SAID CONNECTION FORMING AN OBLIQUE ANGLE WITH THE AXIS OF SAID CARRIAGE WHEELS, SAID FRAME EXTENDING FORWARDLY OF THE CARRIAGE; A SUPERSTRUCTURE MOUNTED ON AND EXTENDING ABOVE SAID FRAME; RIGID TOW BAR MEANS EXTENDING FORWARDLY FROM THE UPPER PORTION OF SAID SUPERSTRUCTURE; A DRUM JOURNALLED IN THE FORWARD END OF SAID FRAME AND ADAPTED TO BE DRIVEN IN A DIRECTION SUBSTANTIALLY OPPOSITE FROM THE LINEAL DIRECTION OF MOVEMENT OF SAID CARRIAGE; TEETH SECURED AT THEIR BASES TO SAID DRUM IN A SPIRAL PATTERN ACROSS THE FACE OF SAID DRUM, EACH TOOTH BEING OF A CURVED SHAPE WITH THE TIP FOLLOWING THE BASE IN THE DIRECTION OF DRUM ROTATION; RIGID COMB MEANS MOUNTED ON SAID SUPERSTRUCTURE ABOVE AND AHEAD OF SAID CARRIAGE AND FORWARDLY OF THE DRUM AXIS, AND BEING SO POSITIONED THAT IT SLOPES DOWNWARDLY AWAY FROM THE CARRIAGE, SAID COMB BEING IN AN INTERFERENCE PATH WITH THE TEETH ON SAID DRUM THEREBY CLEANING THE TEETH AS THE DRUM ROTATES.