VERFAHREN UND VORRICHTUNG ZUM STRAHLPUTZEN

An endless belt and a roller held in contact with said endless belt are turned at high rates of speed and at the same time an abrasive is delivered to the point of contact between said endless belt and said roller, whereby the abrasive is projected at a high rate of speed to impinge upon and blast the surface of an object subjected to cleaning which is placed at the plane of impingement. An apparatus for the purpose of this blasting comprises a blasting chamber incorporating therein an endless belt, a contact roller kept in contact with the endless belt, an abrasive feeder and an object subjected to blasting, apparatus such as, for example, a bucket elevator adapted to return the used abrasive to the abrasive feeder and a hopper. By use of this apparatus, the object is efficiently blasted and the used abrasive is cyclically used automatically.