(under subclass 133) Apparatus in which each of the earth working elements is given a rotating motion by the resistance of the earth as it is drawn thereover.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51+, for diverse rotary driven tools.
151, for three or more diverse implements traveling in the same or overlapping paths and including diverse rolling tools.
154, for four or more laterally spaced tools which are alternately alike, but successively unlike and being all of the rolling type.
158, for laterally spaced like rolling tools with an intermediate diverse rolling tool.
172, for diverse rolling tools one of which is a smooth compaction roller. 518+, for rolling or rotating tools, per se.
