US PATENT SUBCLASS 142 / 25
.~.~.~.~ Hollow mandrel

Current as of: June, 1999
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142 /   HD   WOOD TURNING

*  DD  CIRCULAR SECTION {7}
*  DD  .~ Spiral grooving {2}
*  DD  .~.~ Cutter {2}
26  DF  .~.~.~ Rotary {4}
25.~.~.~.~ Hollow mandrel

DEFINITION

Classification: 142/25

Machines for reducing a stick to a circular section and producing a spiral groove in its circumference by means of a rotary cutter. The stick is controlled in its movements by a rotating hollow mandrel.