Surface-treating machine

Claim 1

IN A SURFACE-TREATING MACHINE, THE COMBINATION OF: A ROLLER ADAPTED TO ROLL OVER A SURFACE AND INCLUDING A CYLINDRICAL CASING AND OPPOSITE END WALLS; SUPPORT MEANS WITHIN THE ROLLER AND HAVING OPPOSITE SIDES RESPECTIVELY PROXIMATE TO SAID END WALLS; MEANS MOUNTING THE SUPPORT MEANS AT SAID SIDES RESPECTIVELY ON THE END WALLS ON THE AXIS OF THE ROLLER FOR ROTATION OF THE ROLLER RELATIVE TO THE SUPPORT MEANS; ONE OF THE SUPPORT MEANS SIDES AND THE PROXIMATE ONE OF SAID END WALLS BEING COAXIALLY APERTURED; A CENTRAL COAXIAL SHAFT JOURNALED IN THE SUPPORT MEANS SIDES AND HAVING ONE END PROJECTING AXIALLY OUTWARDLY THROUGH SAID OEN APERTURED SIDE AND SAID ONE APERTURED END WALL; A SECOND SHAFT PARALLEL TO THE CENTRAL SHAFT AND JOURNALED IN THE SUPPORT MEANS IN RADIALLY SPACED RELATION TO THE CENTRAL SHAFT; A THIRD SHAFT PARALLEL TO THE CENTRAL SHAFT AND JOURNALED IN THE SUPPORT MEANS DIAMETRICALLY OPPOSITE THE SECOND SHAFT AND AT THE SAME RADIAL SPACING FROM THE CENTRAL SHAFT; GEAR MEANS ON THE SHAFTS OPERATIVE TO DRIVE THE SECOND AND THIRD SHAFTS FROM AND OPPOSITELY TO THE CENTRAL SHAFT; WEIGHT MEANS ON THE SHAFTS PROPORTIONED AS TO WEIGHT, LOCATION AND TIMING SO AS TO DEVELOP EFFECTIVE FORCES ONLY ALONG THE DIAMETER ON WHICH THE THREE SHAFTS ARE LOCATED AND MEANS FOR SELECTIVELY SECURING THE SUPPORT MEANS IN ANGULARLY ADJUSTED POSITIONS ABOUT THE AXIS OF THE CENTRAL SHAFT SO AS TO CHANGE THE ANGULAR POSITION OF SAID DIAMETER ON WHICH THE THREE SHAFTS ARE LOCATED.