198 / | HD | CONVEYORS: POWER-DRIVEN |
434 | DF | CONVEYOR SYSTEM FOR ARRANGING OR REARRANGING STREAM(S) OF ITEMS {5} |
459.1 | DF | .~ By longitudinally respacing successive articles in stream {7} |
460.1 | DF | .~.~ With space-control means responsive to article sensing means {2} |
460.3 | .~.~.~ To crowd or imbricate |