The local agricultural industry in Alaska since statehood

An apparatus having rotatable side brushes each supported by articulated arm means swingable about a vertical axis and normally biased to an extended position at right angles to the path of the vehicle so that the side brushes are displaceable automatically along the front, side and rear surfaces of the vehicle as it proceeds. The apparatus provides for a reduction in space for installation, increased cleaning efficiency, and reduced cost of fabrication and maintenance due to the fact that the need for any costly or moisture sensitive controlling elements, such as limit switches, is characteristically eliminated.