BELT DRIVE FOR SCRAPER ELEVATOR DEVICE

摘要

An elevating scraper having an elevator device provided with a pair of endless flexible belt members each of which is entrained about a drive sprocket wheel and the idler sprocket wheel. A plurality of equally spaced teeth are secured to the inner surface of each belt member for meshing engagement with both sprocket wheels and each pair of adjacent teeth pivotally supports a flight member at the outer surface of the belt member.