(under subclass 133) Apparatus in which the diverse earth working elements comprise a plow or earth turning element having a moldboard to turn a furrow slice, a smaller plow or element to throw a strip of soil into the far side of the furrow in advance of the main plow, and a cutting knife to cut a slit in the ground forward of the plow, the plow operating in the slit.
(1) Note. The colter and jointer must be separate from one another and from the plow.
(2) Note. Patents claiming the combination of a separate colter and jointer disclosed for use with a plow will be classified as originals under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
163+, for the combination of a jointer and plow.
165+, for the combination of a colter and diverse tool operating in the slit formed by the colter.
SEE OR SEARCH CLASS 171, Unearthing Plants or Buried Objects,
3, for unearthing devices with a stabilizing colter or fin.
