(under subclass 321) Apparatus including means to cause the carriage to move relative to the base to perform the shaping operation, which means includes a member adapted to turn
about an axis, the member having a helical thread adapted to engage a relatively movable second member and force relative displacement of the second member upon rotation of the helically-threaded member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
333, for a planing machine having a screw-driven cutter infeed means.
