Support for detachable signs

Claim 1

A SUPPORT FOR DETACHABLY SUPPORTING SELECTED SIGNS OF THIN SHEET-LIKE MATERIAL FOR DISPLAY, AND COMPRISING A NONMETALLIC BODY IN THE FORM OF A SHALLOW BOX HAVING A FRONT WALL OF LARGE AREA ON WHICH A SHEET-LIKE SIGN IS TO BE SUPPORTED IN FACE TO FACE RELATION, SAID BOX BEING ADAPTED TO BE SUPPORTED IN SUBSTANTIALLY UPRIGHT POSITION WITH ONE EDGE AT THE TOP, AN INSIDE METAL MEMBER WITHIN THE BOX ARRANGED FOR MOVING FREELY THEREIN PARALLEL TO THE PLANE OF THE FRONT WALL, A TRACKWAY IN THE BODY HAVING A SUPPORTING SURFACE SPACED FROM AND FACING TOWARD SAID ONE EDGE AND SLOPING, ENDWISE OF THE TRACKWAY, TO A PRESELECTED LOW POINT, WHEREBY WHEN THE BOX IS SUPPORTED IN SAID SUBSTANTIALLY UPRIGHT POSITION, THE INSIDE METAL MEMBER IS NORMALLY CAUSED TO MOVE BY GRAVITY ALONG SAID SURFACE TO SAID PRESELECTED LOW POINT AND THERE COME TO REST, A COMPANION MEMBER FOR THE INSIDE MEMBER, SAID COMPANION MEMBER BEING ADAPTED TO BE PLACED DETACHABLY AGAINST THE OUTER FACE OF THE FRONT WALL, AT LEAST ONE OF SAID MEMBERS BEING MAGNETIC, SAID MEMBERS BEING IN MAGNETICALLY ATTRACTIVE RELATIONSHIP TO EACH OTHER, WHEN ALIGNED, SUCH THAT WHEN IN PREDETERMINED ALIGNMENT ON OPPOSITE FACES OF THE FORWARD WALL, THE INNER MEMBER CAN BE MOVED AS A SLAVE TO THE OUTER MEMBER AS THE OUTER MEMBER IS MOVED ALONG THE FRONT WALL, AND WHEN SO ALIGNED WILL, UNDER THE INFLUENCE OF THEIR MAGNETIC ATTRACTION, CLAMP BETWEEN THEM THE ALIGNED PORTIONS OF THE FRONT WALL AND THE ALIGNED SIGN PORTION JUXTAPOSED AGAINST THE FRONT WALL.