Abstract: A cleaning apparatus using an ionized fluid, such as air, to dislodge charged debris from a workpiece includes a ground corona comb disposed adjacent the workpiece. The ground corona comb has a jagged edge which conforms to the surface of the workpiece. The ground corona comb is attached to a vacuum device which suctions the dislodged debris from the vicinity of the workpiece. Utilization of the ground corona comb reduces the time required for the cleaning process by quickly discharging all electrical charges on the debris enabling the debris to be swiftly suctioned off by the vacuum device.

Abstract: A sawdust-burning furnace comprising an inner shell, an outer shell disposed approximately 1 inch from the inner shell, a bottom member and a cover member, an air intake from the base thereof, an exhaust aperture, means to place sawdust therein with a primary channel and inverted cone-shaped burning area, and a flame deflector having legs adapted to rest upon the sawdust while burning is taking place.