(under subclass 178) Apparatus provided with a work support including means to enlarge a cross-sectional portion thereof, so that such support will frictionally engage the internal surface of the tubular work.
(1) Note. The expanding mandrel may function to immobilize for work and/or to position the internal tool for cutting.
SEE OR SEARCH THIS CLASS, SUBCLASS:
623, for means to move a cooperating cutter member.
SEE OR SEARCH CLASS
269, Work Holders,
52, for an expanding mandrel which is not a chuck or socket. 279, Chucks or Sockets,
2.01+, for an expanding mandrel in the form of a chuck or socket.
