(under subclass 280) Apparatus in which the mechanical device includes a pinion or toothed segment and a toothed bar, the teeth of which engage those of the pinion or segment so that the movable pressure surface may be made to move relative to the fixed abutment by the rotation of the pinion or toothed segment.
SEE OR SEARCH CLASS
408, Cutting by Use of Rotating Axially Moving Tool,
66, 99 and 135 for drill presses having feeding mechanism of the rack and pinion type.
