(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 position 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
100, Presses,
53, for presses not elsewhere provided for, which have interrelated or safety controls.
141, Fluent Material Handling, With Receiver or Receiver Coacting Means,
97, for filling systems having a guard or screen for the operator; subclass 155 for safety-stops or interlocks of the safety type in filling systems having means for presenting successive receivers to be filled; subclass 346 for interlocks in other filling systems of a separable type.
