US PATENT SUBCLASS 144 / 28.4
.~.~.~ Work actuated tool drive

Current as of: June, 1999
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144 /   HD   WOODWORKING

2.1  DF  SPECIAL-WORK MACHINE {34}
28.1  DF  .~ Pencil sharpening {3}
28.3  DF  .~.~ Movable tool {4}
28.4.~.~.~ Work actuated tool drive

DEFINITION

Classification: 144/28.4

Work actuated tool drive:

(under subclass 28.3) Machine wherein force applied directly to the workpiece while in the machine puts the workpiece in

motion and thereby supplies the energy for operating said means to move the tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28.7, for an orbiting pencil-sharpener cutter that is rotated about its own axis directly by engagement with the work.