Signaling device for mail box and the like

Claim 1

IN A DEVICE FOR INDICATING THE CLOSURE OF A DOOR ON A MAIL BOX, THE DOOR BEING SWINGABLE ON A HORIZONTAL HINGE AXIS DISPOSED ALONG THE BOTTOM EDGE OF THE DOOR OPENING, IN COMBINATION OF, A LEVER ARM PIVOTALLY MOUNTED INTERMEDIATE ITS ENDS TO A SIDE OF A MAIL BOX, A SIGNAL ELEMENT MOUNTED TO ONE END PORTION OF THE LEVER ARM, A PIN MOUNTED TO AN OPPOSITE END PORTION OF THE LEVER ARM, A LINK MEMBER PIVOTALLY MOUNTED TO THE DOOR AT A DISTANCE FROM SAID HINGE AXIS, A SLIDEWAY CARRIED BY THE LINK MEMBER AT A DISTANCE FROM SAID DOOR AND ACCOMMODATING SAID PIN TO PERMIT RELATIVE LONGITUDINAL MOVEMENT OF THE PIN ALONG SAID SLIDEWAY, THE RELATIVE BIAS OF SAID LINK MEMBER AND LEVER ARM BEING SUCH THAT SAID PIN IS URGED UPWARDLY AGAINST THE UPPER DEFINING EDGE OF SAID SLIDEWAY IN ITS MOVEMENT ALONG SAID SLIDEWAY, AND A DETENT ELEMENT CARRIED BY THE LINK MEMBER ALONG SAID SLIDEWAY AND POSITIONED ADJACENT SAID UPPER DEFINING EDGE TO ENGAGE AND PRESS AGAINST THE SAID PIN UPON MOVEMENT OF THE LINK MEMBER TOWARD THE SAID OPPOSITE END PORTION OF THE LEVER AND THEREBY PIVOTALLY SWING THE LEVER IN A DIRECTION TO RAISE SAID ONE END PORTION OF THE LEVER CARRYING THE SAID SIGNAL ELEMENT.