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 | .~.~.~ By tilting band carrier {1} | |
812 | DF | .~.~.~.~> About point of intersection of cutting span and work-support surface |