Self-locking burglar alarm system

Claim 1

IN COMBINATION WITH A DOOR, WINDOW, OR THE LIKE, AN ALARM AND LOCKING DEVICE COMPRISING, A HOUSING MOUNTED TO SAID DOOR HAVING OPENINGS AT THE UPPER AND LOWER SURFACES THEREOF, AN ARM MEMBER EXTENDING THROUGH BOTH OF SAID OPENINGS, A MOUNTING PLATE SECURED TO SAID ARM MEMBER, RESILIENT MEANS SECURED AT ONE END THEREOF TO THE UPPER SURFACE OF SAID HOUSING AND AT THE OTHER END THEREOF TO SAID MOUNTING PLATE FOR BIASING SAID ARM IN A FIRST POSITION, A LOCKING PLATE HAVING AN APERTURE THERETHROUGH MOUNTED TO THE JAMB OF SAID DOOR DISPOSED ABOVE SAID HOUSING, SIGNAL MEANS MOUNTED TO SAID HOUSING, ELECTRICAL SUPPLY MEANS, A FIRST CONTACT CONNECTED TO SAID SUPPLY MEANS AND SAID SIGNAL MEANS, AND A SECOND CONTACT BIASED BY SAID MOUNTING PLATE OUT OF CONNECTION WITH SAID FIRST CONTACT, WHEREBY WHEN SAID DOOR IS LATERALLY MOVED, SAID ARM MEMBER COMES INTO REGISTRY WITH SAID APERTURE AND IS URGED THERETHROUGH INTO A SECOND POSITION BY SAID RESILIENT MEANS, THEREBY LOCKING SAID DOOR AND BRINGING SAID FIRST AND SECOND CONTACTS INTO ELECTRICAL CONNECTION TO ENERGIZE SAID SIGNAL MEANS.