Building parttion systems

Claim 1

A BUILDING PARTITION CONSTRUCTION WHEREIN: TWO ELONGATED FRAME MEMBERS ARE DISPOSED IN SPACED APART, SUBSTANTIALLY PARALLEL RELATIONSHIP SO THAT SAID FRAME MEMBERS HAVE OPPOSED SUBSTANTIALLY PARALLEL SIDE WALLS, ONE OF SAID FRAME MEMBERS HAVING FIRST AND SECOND SIDE WALLS SPACED FROM AND SUBSTANTIALLY PARALLEL TO EACH OTHER, A CENTER WALL HAVING SIDES, SAID CENTER WALL EXTENDING BETWEEN THE MID-POINTS OF SAID FIRST AND SECOND WALLS, FIRST AND SECOND DIVIDING WALLS EXTENDING FROM OPPOSITE SIDES OF SAID CENTER WALL AT THE MIDPOINT OF SAID CENTER WALL AND PARALLEL TO SAID SIDE WALLS, ELONGATED GROOVE-LIKE HOLDING MEANS INTEGRALLY FORMED ON THE ENDS OF SAID FIRST AND SECOND DIVIDING WALLS REMOTE FROM SAID CENTER WALL AND ON THE OUTER FACE OF SAID SIDE WALLS REMOTE FROM SAID CENTER WALL ALONG THE CENTER PORTION OF SAID SIDES OF SAID SIDE WALLS, ELONGATED GROOVE-LIKE LOCKING MEANS INTEGRALLY FORMED ON THE OUTER FACE OF SAID SIDE WALLS ADJACENT TO THE ENDS THEREOF, THE OTHER OF SAID ELONGATED FRAME MEMBERS HAVING A SIDE WALL WITH AN ELONGATED GROOVE-LIKE HOLDING MEANS INTEGRALLY FORMED ON THE OUTER FACE THERE-