Alarm system for motor vehicles

Claim 1

IN A MOTOR VEHICLE, AN ADJUSTABLE TILT-RESPONSIVE MERCURY SWITCH, MEANS PIVOTALLY MOUNTING SAID SWITCH ON A PORTION OF THE VEHICLE, AN UPWARDLY DIRECTED ADJUSTING SCREW THREADEDLY ENGAGED THROUGH SAID PORTION AND UNDERLYING SAID SWITCH TO ADJUST THE NORMAL POSITION OF THE SWITCH, SPRING MEANS BIASING THE MERCURY SWITCH AGAINST THE TOP END OF SAID ADJUSTING SCREW, SAID SWITCH BEING ADAPTED TO CLOSE RESPONSIVE TO A PREDETERMINED DEGREE OF TILTING OR OSCILLATION OF THE VEHICLE, AN ELECTRICALLY OPERATED SOUND-EMITTING DEVICE MOUNTED ON THE VEHICLE, A SOURCE OF CURRENT, A RELAY HAVING A PAIR OF NORMALLY CLOSED CONTACTS, AN ENERGIZING CIRCUIT INCLUDING SAID NORMALLY CLOSED CONTACTS, A TIMING SWITCH AND SAID TILT-RESPONSIVE SWITCH CONNECTING SAID RELAY TO SAID SOURCE OF CURRENT, A FIRST PAIR OF NORMALLY OPEN CONTACTS ON SAID RELAY, A BLINKER SWITCH, MEANS CONNECTING SAID SOUNDEMITTING DEVICE TO SAID SOURCE THROUGH SAID FIRST PAIR OF CONTACTS AND SAID BLINKER SWITCH, A SECOND PAIR OF NORMALLY OPEN CONTACTS ON SAID RELAY, A HEATER WINDING IN SAID TIMING SWITCH OPENING THE TIMING SWITCH AFTER A PREDETERMINED PERIOD OF ENERGIZATION THEREOF, A HOLDING CIRCUIT CONNECTING SAID RELAY TO SAID SOURCE THROUGH SAID SECOND PAIR OF NORMALLY OPEN CONTACTS AND SAID TIMING SWITCH, AND MEANS CONNECTING SAID HEATER WINDING IN PARALLEL WITH SAID RELAY, WHEREBY TO DEENERGIZE THE RELAY AND TO DEENERGIZE SAID SOUND-EMITTING DEVICE AFTER SAID PREDETERMINED PERIOD, SUBSEQUENT TO ENERGIZATION OF THE RELAY.