(under the class definition) Apparatus wherein means are provided to change the location or position of a protective
obstruction for the operator tool blade or work, which cooperates significantly with means to move a tool through a tool stroke* or a part of such stroke.
SEE OR SEARCH THIS CLASS, SUBCLASS:
544+, for guard means which does not move in cooperation with the cutter.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
613+, for a similar device for moving a guard into protective position by some part of the machine. 474, Endless Belt Power Transmission Systems or Components,
144+, for a guard or housing for a belt and pulley drive system.
