Sign supporting adapter

Claim 1

THE COMBINATION WITH A HOLLOW POST FIXEDLY POSITIONED UPON A GROUND SURFACE, SAID POST HAVING OPPOSED SEATING SLOTS OPENING TO THE UPPER END THEREOF, A SIGN SUPPORTING ADAPTER COMPRISING A MOUNTING ELEMENT IN THE FORM OF A SLEEVE WHICH IS CLOSED AT ONE END BY A PLUG, A SELF MEANS ON SAID PLUG, OPPOSED LEDGES PROJECTING EXTERIORLY FROM SAID PLUG ADJACENT SAID SHELF MEANS, SAID MOUNTING ELEMENT BEING DISPOSED SO THAT THE PORTION OF THE SLEEVE OPPOSITE THE PLUG IS TELESCOPED INTO SAID POST AND SHIFTED UNIT SAID LEDGES ARE RELEASABLY RECEIVED IN SAID SEATING SLOTS, A STANDARD SUPPORTED IN SAID PLUG FOR SLIDING UPWARD AND DOWNWARD MOVEMENT WITH RESPECT TO SAID PLUG, SECURING MEANS CARRIED BY SAID PLUG AND ENGAGEABLE WITH SAID STANDARD FOR HOLDING THE LATTER IN ANY SELECTED POSITION OF ITS MOVEMENTS WITH RESPECT TO SAID PLUG, A SIGN BACKING MEMBER IN THE FORM OF A PLATE WHICH IS PROVIDED WITH AN ELONGATED HORIZONTAL BASE DISPOSED SO THAT THE PLATE RESTS AGAINST SAID STANDARD AND HAVING THE BASE SUPPORTED IN SAID SHELF MEANS, MEANS ON SAID BASE FOR RECEIVING AND SUPPORTING THE LOWER END PORTION OF A SIGN WHEN DISPOSED IN A VERTICAL POSITION AGAINST SAID BACKING MEMBER, AND OVERHANGING MEANS ON SAID STANDARD ADJACENT THE UPPER END THEREOF FOR EMBRACINGLY RECEIVING THE UPPER END PORTION OF SAID SIGN WHEN DISPOSED IN THE AFORESAID VERTICAL POSITION.