(under subclass 35) Apparatus in which a guide means is provided for constraining an earth working element to move back and forth in a straight line path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, and 22, for vertically reciprocating sod cutters.
21, for vertically reciprocating turf perforators which pierce the soil to aerate the same.
61+, for tools which are guided for rectilinear reciprocation but which are intermittently driven through their cycle of operation.
