Automatic vehicle warning system

Claim 1

IN AN IMPROVED WARNING SYSTEM FOR CONTROLLING A VISUAL SIGNAL AND FOR PROVIDING IT AUTOMATICALLY UPON THE DECELERATION OF A VEHICLE WHICH COMPRISES, A SOURCE OF ELECTRICAL ENERGY, A NORMALLY OPEN MERCURY SWITCH MOUNTED IN AN INCLINED POSITION ON THE VEHICLE, A CONTROL UNIT HAVING PAIRS OF ALTERNATE SWITCH CONTACTS AND AN ELECTRICALLY ENERGIZED ACTUATING MEANS FOR MOVING SAID SWITCH CONTACTS FROM ONE POSITION TO A SECOND POSITION UPON ITS INITIAL ENERGIZATION AND FOR MOVING SAID SWITCH CONTACTS FROM THE SECOND POSITION BACK TO THE ONE POSITION UPON ITS SECOND ENERGIZATION, A VISUAL SIGNAL MEANS CONNECTED TO SAID SOURCE OF ENERGY THROUGH SAID SWITCH CONTACTS WHEN THEY ARE IN THE SECOND POSITION FOR GIVING WARNING, SAID MERCURY SWITCH BEING CLOSED UPON A DECELERATION OF VEHICULAR MOVEMENT TO CONNECT SAID ACTUATING MEANS TO SAID SOURCE OF ENERGY WHEN SAID SWITCH CONTACTS ARE IN THE ONE POSITION FOR INITIALLY ENERGIZING SAID ACTUATING MEANS TO MOVE SAID SWITCH CONTACTS TO THE SECOND POSITION TO CONNECT SAID VISUAL SIGNAL MEANS TO SAID SOURCE OF ENERGY, A SECOND SWITCH CONNECTED BETWEEN SAID SOURCE OF ENERGY AND SAID ACTUATING MEANS INDEPENDENTLY OF SAID MERCURY SWITCH FOR AGAIN ENERGIZING SAID ACTUATING MEANS TO MOVE SAID SWITCH CONTACTS FROM THE SECOND POSITION BACK TO THE ONE POSITION TO DE-ENERGIZE SAID VISUAL SIGNAL MEANS.