Power operated brush attachment for earth moving machine

Claim 1

IN COMBINATION WITH AN EARTH MOVING VEHICLE HAVING A BOOM FORMED OF TELESCOPING ELEMENTS OF TRIANGULAR CROSSSECTION EXTENDING ANGULARLY UPWARDLY FROM SAID VEHICLE, AND INCLUDING MEANS FOR ROTATING SAID BOOM ABOUT ITS AXIS THROUGH AN ANGLE OF ABOUT 90*; A FRAMEWORK INCLUDING MEANS FOR CLAMPING THE FRAMEWORK AGAINST THE END FACE OF THE OUTERMOST OF SAID TELESCOPING ELEMENTS AND IN A PLANE AT RIGHT ANGLES TO THE LONGITUDINAL AXIS OF THE BOOM, A CYLINDRICAL BRUSH ROTATABLY MOUNTED ON SAID FRAMEWORK IN SUBSTANTIALLY THE SAME PLANE THEREOF AND DISPOSED AT AN ANGLE OF ABOUT 45* WITH RESPECT TO THE BASE OF THE TRIANGULAR CROSS-SECTION OF SAID OUTERMOST TELESCOPING ELEMENT, A HYDRAULIC MOTOR MOUNTED ON SAID FRAMEWORK, CONTROL MEANS MOUNTED ON SAID VEHICLE FOR CONTROLLING OPERATION OF SAID HYDRAULIC MOTOR, SPROCKET AND CHAIN DRIVE MEANS ROTATABLY MOUNTED ON SAID FRAMEWORK IN SUBSTANTIALLY THE SAME PLANE THEREOF AND COUPLING SAID MOTOR TO SAID BRUSH, FLEXIBLE HOSES EXTENDING PARALLEL TO SAID BOOM AND CARRYING HYDRAULIC FLUID FROM SAID VEHICLE TO SAID MOTOR, THE BASE OF THE TRIANGULAR CROSS-SECTION OF SAID OUTERMOST TELESCOPING ELEMENT BEING AT A NEUTRAL POSITION PARALLEL TO THE ROADWAY WHEN AXIALLY ROTATED ABOUT 45* FROM EITHER EXTREME POSITION, SAID FRAMEWORK BEING ROTATABLE, BY AXIAL ROTATION OF SAID BOOM BY SAID MEANS THROUGH AN ANGLE OF ABOUT 45* FROM SAID NEUTRAL POSITION IN ONE DIRECTION TO POSITION THE AXIS OF SAID BRUSH VERTICALLY SO AS TO ENABLE IT TO WASH VERTICAL WALLS AS THE VEHICLE IS DRIVEN FORWARDLY, SAID FRAMEWORK BEING ROTATABLE THROUGH AN ANGLE OF 45* IN AN OPPOSITE DIRECTION FROM SAID NEUTRAL POSITION SO THAT WHEN THE BOOM IS TILTED UPWARDLY, THE AXIS OF SAID BRUSH WILL EXTEND HORIZONTALLY, PARALLEL TO THE ROADWAY SURFACE SO AS TO ENABLE IT TO WASH CEILINGS AS THE VEHICLE IS DRIVEN FORWARDLY, AND WHEN ROTATED TO INTERMEDIATE POSITIONS, SAID BRUSH IS ENABLED TO WASH DIFFERENTLY INCLINED SURFACE WHILE SAID VEHICLE IS DRIVEN FORWARDLY.