172 / | HD | EARTH WORKING |
518 | DF | ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30} |
579 | .~ Plural groups of disks {5} | |
580 | DF | .~.~> Power operated actuator |
581 | DF | .~.~> Groups changeable to different types of arrangements |
582 | DF | .~.~> With independent lateral adjustment |
583 | DF | .~.~> Vertically adjustable group |
584 | DF | .~.~> Horizontally angularly adjustable group {9} |