(under subclass 613) Apparatus in which a plurality of parallel bars, each bar carrying a plurality of earth working elements, are pivotally mounted, the bars being selectively rotatable from one angular position of adjustment to another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
390, for apparatus having a plurality of spring tools carried by parallel pivoted tooth bars and also having a wheel substitute such as a runner.
620+, for parallel transverse tooth bars which are relatively movable to each other during operation and which tooth bars may also be pivotally adjustable.
