coke belt roller conveyor head tail pulley,
Patent US4633999 - Self-adjusting conveyor belt cleaning . - Google
Jan 6, 1987 . . belt is in contact with a head pulley, snub pulley, idler roller, or the like. . coke, sinter, stone, ore, and the like are transported on endless belt . off the belt as the belt returns to the tail-end section of the conveyor apparatus.