(under subclass 734) Apparatus in which the earth working element or a part thereof is adjustable to direct a distinct cutting edge or portion in active earth working engagement with the soil.
(1) Note. For the meaning of "adjustable" see the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
136, for diverse tools which may be used alternately only.
703+, for a tool or tool part reversible through 180 deg. to present a different tool or portion thereof to the soil.
SEE OR SEARCH CLASS 175, Boring or Penetrating the Earth,
383, for an earth-boring bit having a cutter element which is adjustable to present a different cutting edge.
