Abstract: The invention relates to means for coupling a first rigid element to a second rigid element, the coupling means including a wheel having a central circular opening therein with a screw thread on the inner surface of the central opening and a rod member including a longitudinal rod having a screw thread on the outer surface thereof. The wheel screw thread and the rod screw thread are mating threads. The wheel is received in a transverse passage extending through the width of the first rigid element in a plane at right angles to the length of the first element and the rod is received in a longitudinal passage in the first element, the passage extending from one edge of the first element into the element and being in communication with the transverse passage.

Abstract: This invention relates to an assembly which is used for supporting objects on a wall surface and which is mounted on the wall surface to support the objects. The assembly includes a first or rail member which is mounted on the wall surface and which has a front member with a front surface which front surface is spaced from the wall surface by side walls and which is substantially parallel to the wall surface. The front surface includes a plurality of spaced openings which may be arranged along two rows with an opening in one row being disposed between two adjacent openings in the other row. The assembly also includes a clip means with a base member having a hanger means extending from one surface and hook means extending from the other surface. The hook means are spaced to match the spacing of the openings, and the space between the inner surface of each hook means and the other surface of the base is less than the thickness of the front member of the rail.