Automobile door lock

Claim 1

A SAFETY LOCK FOR A VEHICLE HAVING A CHASSIS INCLUDING A PAIR OF OPPOSED LATERALLY SPACED UPRIGHT DOOR JAMBS, A DOOR INCLUDING A PAIR OF OPPOSED LATERALLY SPACED FRONT AND BACK PANELS, A PAIR OF SPACED AND CONFRONTING SIDE FRAME MEMBERS, AND MEANS PIVOTALLY CONNECTING SAID DOOR ADJACENT ONE OF SAID SIDE FRAME MEMBERS ON ONE OF SAID DOOR JAMBS, SAID SAFETY LOCK COMPRISING AN ELONGATED BAR HAVING AN END THEREOF FIXEDLY SECURED TO SAID ONE SIDE FRAME MEMBER AND SAID BACK PANEL ADJACENT THE INTERSECTION OF SAID ONE SIDE FAME MEMBER WITH SAID BACK PANEL, SAID BAR EXTENDING TRANSVERSELY BETWEEN SAID FRONT AND BACK PANELS, MEANS FIXEDLY SECURING THE OTHER END OF SAID BAR TO SAID FRONT PANEL INTERMEDIATE SAID SIDE FRAME MEMBERS, SAID BAR HAVING AN UNDERCUT GROOVE FORMED THEREIN EXTENDING INWARDLY FROM ITS SAID OTHER END, AN ELONGATED LOCK ARM HAVING A PAIR OF OPPOSED ENDS, MEANS PIVOTALLY CONNECTING ONE END OF SAID LOCK ARM ON SAID BAR, THE OTHER END OF SAID LOCK ARM BEING SWINGABLE WITHIN SAID UNDERCUT GROOVE TOWARDS AND AWAY FROM SAID OTHER END OF SAID BAR, MEANS MOUNTED ON SAID OTHER END OF SAID BAR CONSTANTLY BIASING SAID OTHER END OF SAID LOCK ARM FOR SWINGING MOVEMENT AWAY FROM SAID OTHER END OF SAID BAR, A BLOCK HAVING A PASSAGE EXTENDING TRANSVERSELY THERETHROUGH, SAID OTHER END OF SAID BAR EXTENDING THROUGH SAID PASSAGE TO SLIDABLY MOUNT SAID BLOCK THEREON, SAID OTHER END OF SAID LOCK ARM EXTENDING SLIDABLY THROUGH SAID PASSAGE WITH ITS SAID OTHER END NORMALLY DISPOSED IN SPACED RELATION RELATIVE TO AN ADJACENT PORTION OF SAID OTHER END OF SAID BAR UNDER THE INFLUENCE OF SAID BIASING MEANS, MEANS ON SAID LOCK ARM AND SAID BLOCK NORMALLY ENGAGING ONE ANOTHER TO PREVENT RELATIVE MOVEMENT BETWEEN SAID BLOCK AND SAID BAR IN ONE DIRECTION, AN ELONGATED BRACE HAVING A PAIR OF OPPOSED ENDS, MEANS PIVOTALLY CONNECTING ONE END OF SAID BRACE ON SAID CHASSIS ADJACENT SAID ONE DOOR JAMB, MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID BRACE ON SAID BLOCK, THE LONGITUDINAL AXES OF SAID BAR AND SAID BLOCK BEING DISPOSED AT AN ACUTE ANGLE RELATIVE TO ONE ANOTHER WHEREBY AS SAID DOOR IS PIVOTED IN ONE DIRECTION OR THE OTHER SAID BLOCK RECIPROCATES ON SAID BAR, AND MEANS MOUNTED ON SAID DOOR OPERABLE TO PIVOT SAID LOCK ARM TOWARDS SAID OTHER END OF SAID BAR TO DISENGAGE SAID ENGAGING MEANS FREEING SAID BLOCK FOR RECIPROCATION ON SAID BAR TO ENABLE SAID DOOR TO FREELY PIVOT ABOUT ITS SAID PIVOTAL CONNECTION.