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} |
461.1 | DF | .~.~ By successive conveyors having dissimilar speeds {2} |
461.2 | .~.~.~ Conveyors having increased speeds only {1} | |
461.3 | DF | .~.~.~.~> Belt or chain conveyors only |