in which the operation of locking the door or other member causes the machine to start

Full Title

Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body (F16P5/00 takes precedence) > in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts > in which the operation of locking the door or other member causes the machine to start