Car washing plant

Claim 1

AUTOMATIC PLANT COMPRISING ROTARY BRUSHES FOR WASHING A VEHICLE PASSING THROUGH THE PLANT, THE PLANT INCLUDING AT LEAST ONE ARM MOUNTED FOR PIVOTAL MOVEMENT ABOUT A HORIZONTAL AXIS, A BRUSH, CARRIED BY SAID ARM FOR ROTATION ABOUT A HORIZONTAL AXIS, FOR CLEANING THE TOP OF THE VEHICLE, AND TWO ROTARY BRUSH ASSEMBLIES ARRANGED TO BE ENCOUNTERED SUCCESSIVELY BY THE VEHICLE, EACH SAID ASSEMBLY COMPRISING TWO ARMS MOUNTED FOR PIVOTAL MOVEMENT ABOUT A COMMON VERTICAL AXIS, MEANS URGING SAID ARMS TOWARDS ONE ANOTHER, AND MEANS FOR LIMITING THE MOVEMENT OF SAID ARMS TOWARDS ONE ANOTHER SUCH THAT THE MINIMUM ANGLE INCLUDED BETWEEN THEIR EFFECTIVE LEVER ARMS IS APPROXIMATELY 90*, A BRUSH CARRIED BY EACH SAID ARM FOR ROTATION ABOUT A VERTICAL AXIS, AND MEANS DEFINING AN INITIAL POSITION OF EACH SAID ASSEMBLY IN WHICH POSITION ONE BRUSH OF EACH ASSEMBLY IS INITIALLY PRESENTED TO ABOUT THE CENTER OF THE FRONT OF THE VEHICLE AND THE OTHER BRUSH TO A WING, PASSAGE OF A VEHICLE THROUGH THE PLANT RESULTING IN SAID ONE BRUSH MOVING OUTWARDLY ACROSS THE FRONT OF THE VEHICLE AND PASSING ROUND A FRONT CORNER OF THE VEHICLE WHILE THE OTHER BRUSH PASSES ALONG THE SIDE OF THE VEHICLE, THEN BOTH SAID BRUSHES PASSING ALONG THE SAID SIDE, AND FINALLY SAID OTHER BRUSHES PASSING OVER HALF THE BACK OF THE VEHICLE WHILE SAID ONE BRUSH ALONE PASSES ALONG THE SIDE, THE SAID ASSEMBLIES BEING ARRANGED ON RESPECTIVE SIDES OF THE CENTER LINE OF THE PATH OF THE VEHICLE THROUGH THE PLANT SO AS TO CLEAN RESPECTIVELY HALF FRONTS, SIDES AND HALF BACKS OF TH E VEHICLE, AND BEING ARRANGED, IN THE DIRECTION OF MOVEMENT OF THE VEHICLE, SO THAT THE ONE BRUSH OF ONE ASSEMBLY IS ENCOUNTERED BY THE VEHICLE BEFORE THE ONE BRUSH OF THE OTHER ASSEMBLY.