.~ Plural tool groups relatively vertically movable because of operation {9}
633
.~.~ Group pivotal about intermediate transverse axis
DEFINITION
Classification: 172/633
(under subclass 619) Apparatus comprising a forward and a rearward group of earth working elements said groups being relatively movable about a horizontal axis disposed transversely of the apparatus intermediate the groups in forward and rearward position of the groups.
SEE OR SEARCH THIS CLASS, SUBCLASS:
623, for groups of tools abreast and in tandem which may permit the tandem groups to pivot about an intermediate transverse axis.
