(under the class definition) Apparatus in which (1) two or more portions of the apparatus having distinct functions each have the regulating elements therefor so arranged as to require one element to assume a desired position simultaneously or in proper sequence with the positioning of another element, whereby the operation of one part is directly dependent upon the correct positioning of the regulating element of another part or (2) some nonautomatic mechanism is so arranged as to prevent operation of part or all of the machine when such operation would (a) endanger the person of an operator or (b) injure some part of the machine.
SEE OR SEARCH CLASS
53, Package Making,
77, for package making apparatus with interrelated or safety controls.
192, Clutches and Power-Stop Control,
116.5+, for mechanisms usually automatic in operation for stopping a machine when a predetermined result is reached, when some part of the machine fails to function, when the material fails or is disarranged, or when an operator's position renders him liable to injury. This subclass takes the subcombinations, per se.
