Apparatus for washing motor cars and the like

Claim 1

IN AN APPARATUS FOR WASHING AUTOMOTIVE VEHICLES WHEREIN BRUSH MEANS SWEEP ALONG TOP AND SIDE SURFACES OF A VEHICLE WHILE SAID SURFACES ARE TREATED WITH A WASHING LIQUID, THE IMPROVEMENT WHICH COMPRISES: AN UPRIGHT SUPPORT FRAME LYING IN A PLANE TRANSVERSE TO THE VEHICLE AND PROVIDED WITH WHEEL MEANS FOR LONGITUDINAL DISPLACEMENT OF SAID FRAME ALONG SAID VEHICLE WHILE SAID VEHICLE REMAINS STATIONARY; A BRUSH MOUNTED ON SAID FRAME FOR ROTATION ABOUT A SUBSTANTIALLY HORIZONTAL AXIS AND EXTENDING ATHWART SAID FRAME FOR ENGAGEMENT WITH SAID TOP SURFACE OF SAID VEHICLE UPON DISPLACEMENT OF SAID FRAME THEREALONG; GUIDE MEANS ON SAID FRAME FOR CONFINING SAID BRUSH TO LINEAR VERTICAL MOVEMENT SUBSTANTIALLY SOLELY BY THE REACTION FORCE OF ROLLING ENGAGEMENT THEREOF WITH SAID TOP SURFACE OF SAID VEHICLE DURING LONGITUDINAL DISPLACEMENT OF SAID FRAME; COUNTERWEIGHT MEANS ON SAID FRAME AND FLEXIBLE MEANS CONNECTING SAID COUNTERWEIGHT MEANS WITH SAID BRUSH FOR BALANCING AT LEAST PART OF THE WEIGHT THEREOF; AND DRIVE MEANS ON SAID FRAME FOR ROTATING SAID BRUSH ABOUT ITS AXIS.