198 / | HD | CONVEYORS: POWER-DRIVEN |
618 | DF | CONVEYOR SECTION {26} |
804 | DF | .~ Endless conveyor {14} |
818 | DF | .~.~ Having upwardly facing trough configuration in transverse direction on conveying reach {3} |
820 | DF | .~.~.~ Having preformed trough shape {2} |
822 | .~.~.~.~ Formed or including transverse plates tandemly disposed lengthwise of carrier belt |