.~ Boring with submersible vertically movable guide
DEFINITION
Classification: 175/10
(under subclass 5) Subject matter, utilizing a support for a boring means provided with a vertically disposed guide frame, a second guide frame or member mounted on said first guide frame, said second guide frame or member being movable relative to said first guide frame in a vertical direction to a position below the surface of the body of the water.
SEE OR SEARCH THIS CLASS, SUBCLASS:
220, and the search there noted for above ground guide means for relatively advancing tool.
