Sequential electrical lighting arrangement

Claim 1

A SEQUENTIAL LIGHTING ARRANGEMENT FOR SUCCESSIVELY ENERGIZING A PLURALITY OF ELECTRIC LAMPS, COMPRISING A PLURALITY OF SWITCHES EACH INCLUDING A PAIR OF NORMALLY CLOSED CONTACTS, A HEAT-SENSITIVE ELEMENT COUPLED TO ONE OF SAID CONTACTS FOR OPENING SAID CONTACTS UPON THE APPLICATION OF HEAT THERETO, AND A HEATER ELEMENT INTIMATELY ASSOCIATED WITH SAID HEAT-SENSITIVE ELEMENT, CIRCUIT MEANS CONNECTING ALL OF THE PAIRS OF SWITCH CONTACTS IN SERIES WITH ONE TERMINAL OF A SOURCE OF ELECTRICAL CURRENT TO PROVIDE A FIRST BUS LINE, MEANS CONNECTING EACH HEATER ELEMENT ACROSS THE PAIR OF CONTACTS OF THE PRECEDING SWITCH TO PLACE SAID HEATER ELEMENT IN THE FIRST BUS LINE FOR ENERGIZATION THEREOF WHEN THE PAIR OF CONTACTS OF THE PRECEDING SWITCH ARE OPEN AND THE BUS LINE IS COMPLETED TO SAID PRECEDING SWITCH, A SECOND BUS LINE CONNECTED TO THE OTHER TERMINAL OF SAID CURRENT SOURCE, AND MEANS CONNECTING EACH OF SAID LAMPS IN PARALLEL BETWEEN THE SECOND BUS LINE AND ONE OF THE CONTACTS OF A SWITCH IN THE FIRST BUS LINE INDEPENDENTLY OF SAID HEATER ELEMENTS FOR ENERGIZATION OF SAID LAMP WHEN THE BUS LINE IS COMPLETED TO SAID CONNECTED CONTACT.