(under subclass 349) Apparatus having means to (1) prevent operation of the apparatus when in unguarded, abnormal or unsafe condition such as would injure the operator, or (2) interconnect machine parts to prevent action when the parts are not in proper operational condition, operation thereof
would injure the machine.
SEE OR SEARCH CLASS
53, Package Making,
77, for devices there provided for having interrelated or safety controls.
100, Presses,
53, for presses not elsewhere provided for having interrelated or safety controls.
