83 / | HD | CUTTING |
788 | DF | BY ENDLESS BAND OR CHAIN KNIFE {10} |
809 | DF | .~ Including means to adjust relationship between band and work-support surface {2} |
810 | DF | .~.~ By varying angle between band and work-support surface {1} |
811 | DF | .~.~.~ By tilting band carrier {1} |
812 | .~.~.~.~ About point of intersection of cutting span and work-support surface |