(under subclass 263) Apparatus in which the laterally movable cutter element is pivotally mounted on the bit head or shaft to swing about an axis which substantially parallel to the longitudinal axis of the shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343, for rolling cutters which are eccentrically mounted on a longitudinal axis and which may be so positioned when inoperative to pass through a casing or bore of smaller diameter than the cutters will cut when operative.
