198 / | HD | CONVEYORS: POWER-DRIVEN |
618 | DF | CONVEYOR SECTION {26} |
620 | DF | .~ Load simultaneously engaged between and moved by a plurality of driven conveyor members {5} |
626.1 | DF | .~.~ Opposed endless belts {2} |
626.5 | .~.~.~ Having adjustable belt portion {1} | |
626.6 | DF | .~.~.~.~> By biasing means |