Including vertical, longitudinally oriented disc or blade (e.g., as stabilizer):
(under subclass 133) Apparatus wherein an upright, generally planar disc or blade is disposed in the direction of travel.
(1) Note. The blade or disc often works the earth only to provide lateral stability to the implement as it moves in its intended direction of travel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
144, and 165+, for a colter which cuts a vertical slit in the earth and a tool which follows the colter and operates in the slit cut thereby.
752, for a unitary earthworking element having a separable vertical planar lognitudinal cutter including apparatus in which the cutter is mounted on a runner or landside which forms a direct rearward continuation of the shovel, moldboard, or the like.
SEE OR SEARCH CLASS
171, Unearthing Plants or Buried Objects,
3, for unearthing devices with stabilizing colter or fin.
