(under subclass 327) Apparatus in which the bit is provided with a movable cutter element and means to selectively hold said cutter element in different positions with respect to the bit head.
(1) Note. A mere clamp which cooperates with a member such that by loosening the clamp the member could be set in any desired position and reclamped is not considered to be adjustable. However, any specific structure such as selectively usable apertures, teeth, slots, etc., for the purpose of permitting the selective change of the relative positions of two parts is included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
263+, for cutter elements laterally shiftable below ground.
342, for an adjustable rolling cutter bit.
379, for cutting elements which are renewable during operation.
381, for plural cutting edges which are relatively longitudinally movable during operation.
412+, for cutter elements detachably mounted in a bit head by means of clamps or other securing devices.
SEE OR SEARCH CLASS
172, Earth Working,
734+, for an adjustable earth working tool.
408, Cutting by Use of Rotating Axially Moving Tool,
