New system of operation of doors and contacts in elevators and lifting appliances in general (Machine-translation by Google Translate, not legally binding)

摘要

New system for actuating doors and contacts in elevators and lifting devices in general, characterized in that the lock internally comprises a double effect lever with fulcrum in a central pivot, on which a spring or spring acts to keep it pressed always in one direction, having provided on the ends of this lever prolongations protruding from the box by two holes, one of them in sufficient proportion to enter the box of the strike. (Machine-translation by Google Translate, not legally binding)