83 / | HD | CUTTING |
284 | DF | CUTTING MOTION OF TOOL HAS COMPONENT IN DIRECTION OF MOVING WORK {17} |
315 | DF | .~ Tool mounted on oscillating standard {1} |
316 | .~.~ Both tools of couple on single standard {1} | |
317 | DF | .~.~.~> One tool swings out of work path on return stroke |