(under subclass 61) Apparatus in which movement of the earth working element through the power drive portion of its cycle effects a loading of a resilient means which means then effects movement of the earth working element to its initial position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36, for subsurface shear or nipper-type tools wherein plural earth working elements or parts thereof are moved toward or away from each other by a positive drive means having a spring device as part thereof.
