Vehicle warning system

Claim 1

A LIGHTING CIRCUIT WARNING SYSTEM FOR A MOTOR VEHICLE HAVING AN ELECTRIC STORAGE BATTERY, A NORMALLY OPEN DOOR SWITCH CLOSED RESPONSIVE TO THE OPENING OF THE VEHICLE DOOR, AND A LIGHTING CIRCUIT CONNECTED TO SAID BATTERY AND INCLUDING A VEHICLE LAMP AND A LAMP CONTROL SWITCH MOVABLE BETWEEN AN "ON" POSITION WHEREIN SAID LAMP IS ENERGIZED AND AN "OF" POSITION WHEREIN SAID LAMP IS DEENERGIZED, SAID SYSTEM COMPRISING THE COMBINATION WITH SAID STORAGE BATTERY, SAID DOOR SWITCH AND SAID LAMP CONTROL SWITCH OF: AN ELECTROMAGNETIC SOUNDER WARNING SIGNAL HAVING A FIRST COIL, A MOVABLE SIGNAL-ARMATURE BIASED TO A FIRST POSITION AND ATTRACTED BY SAID FIRST COIL WHEN INDIVIDUALLY ENERGIZED TO SAID SECOND POSITION, ELECTRICAL CONTACT MEANS OPENED WHEN SAID SIGNAL-ARMATURE IS IN SAID FIRST POSITION AND CLOSED WHEN SAID SIGNALARMATURE IS IN SAID SECOND POSITION, AND A SECOND COIL WOUND TO PRODUCE A MAGNETIC FIELD SUBSTANTIALLY EQUAL AND IN OPPOSITION TO THE FIELD OF SAID FIRST COIL WHEN SAID COILS ARE SIMULTANEOUSLY ENERGIZED BY SAID BATTERY, SAID FIELDS WHEN IN OPPOSITION HAVING NO SUBSTANTIAL ATTRACTING EFFECT ON SAID SIGNAL-ARMATURE WHEREBY ENERGIZATION OF SAID SECOND COIL THROUGH SAID CONTACT MEANS CONCURRENTLY WITH ENERGIZATION OF SAID FIRST COIL CAUSES SAID SIGNAL-ARMATURE TO VIBRATE BETWEEN SAID FIRST AND SECOND POSITIONS TO PRODUCE AN AUDIBLE WARNING SIGNAL; A FIRST COIL CIRCUIT INCLUDING SAID FIRST COIL, AND A SECOND COIL CIRCUIT INCLUDING SAID SECOND COIL AND SAID CONTACT MEANS IN SERIES CONNECTION; FIRST AND SECOND MEANS SEPARATELY CONNECTING SAID BATTERY TO SAID FIRST AND SECOND COIL CIRCUITS, RESPECTIVELY, WITH SAID WINDINGS BEING CONNECTED TO PROVIDE OPPOSING FIELDS WHEN SIMULTANEOUSLY ENERGIZED FROM SAID BATTERY, ONE OF SAID CONNECTING MEANS INCLUDING SAID DOOR SWITCH, AND THE OTHER OF SAID CONNECTING MEANS INCLUDING SAID LAMP CONTROL SWITCH.