.~ Simultaneously reciprocating and oscillating blade having elongated shank {3}
89
.~.~ Means for varying contour of path of blade
DEFINITION
Classification: 172/89
(under subclass 84) Apparatus in which means are provided to vary the shape or contour of the path or orbit through which the earth working element is driven.
(1) Note. A mere incidental change in the shape or contour of the path or orbit of the element due to the raising or lowering of the same to vary the working depth thereof or to raise the same for transport is not included herein. The claim must set forth means for varying the shape or contour of the path, which means is independent of the raising and lowering means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87, for transverse chopper-type earth working elements which are provided with means for varying the shape or contour of the path or orbit through which the earth working elements are driven.
