US PATENT SUBCLASS 147 / 14
.~.~ Expansible cutter head

Current as of: June, 1999
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147 /   HD   COOPERING

*  DD  CROZING AND CHAMFERING BARRELS {3}
*  DD  .~ Rotating barrel {4}
14.~.~ Expansible cutter head

DEFINITION

Classification: 147/14

Machines in which the barrel is rotated on its axis and while rotating cutting-tools are projected radially from a fixed head to croze, howel, or chamfer the staves.