(under subclass 518) Apparatus in which the rolling or rotating earth working tool comprises a single, generally circular platelike member provided with a means for adjusting such member on a frame in a different angular relationship to adjacent structure as viewed in plan.
(1) Note. For the meaning of "adjusting" see the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
584+, for a horizontally, angularly adjustable disc gang.
742, for a tool other than a disc which is laterally adjustable about a vertical axis.
