Partition with supporting shaft section in rabbet of facer panels

Claim 1

IN A HOLLOW WALL STRUCTURE THE COMBINATION OF A FIRST SERIES OF WALLBOARD UNITS AND A SECOND SERIES OF WALLBOARD UNITS SPACED FROM SAID FIRST SERIES OF WALLBOARD UNITS, THE WALLBOARD UNITS OF EACH OF SAID SERIES INCLUDING SIDE EDGES HAVING RECESSED EDGE PORTIONS WHEREBY THE SIDE EDGES OF ADJOINING PAIRS OF WALLBOARD UNITS IN EACH OF SAID FIRST AND SECOND SERIES ARE DISPOSED IN SIDE EDGE TO SIDE EDGE ABUTMENT AND OVERLAPPED RELATIONSHIP, ONE WALLBOARD UNIT OF EACH PAIR OF ADJOINING WALLBOARD UNITS IN SAID FIRST AND SECOND SERIES OF UNITS HAVING A RABBET GROOVE EXTENDING INWARDLY BETWEEN THE SIDE EDGE OF THE ONE WALLBOARD UNIT AND ITS RECESSED EDGE PORTION, A STUD ELEMENT ANCHORED TO OPPOSITE PAIRS OF ADJOINING WALLBOARD UNITS IN SAID FIRST AND SECOND SERIES, SAID STUD ELEMENT COMPRISING AN ELONGATED GENERALLY Z-SHAPED MEMBER PROVIDED WITH A PAIR OF PARALLEL SIDE FLANGES EXTENDING IN DIAMETRICALLY OPPOSITE DIRECTIONS, SAID STUD ELEMENT BEING FURTHER PROVIDED WITH A WEB PORTION AND AT LEAST ONE PAIR OF SPACED FLANGE ELEMENTS OF SMALLER LENGTH THAN SAID WEB PORTION, EACH FLANGE ELEMENT OF SAID PAIR OF SPACED FLANGE ELEMENTS BEING DISPOSED ADJACENT TO ONE OF THE SIDE FLANGES OF SAID PAIR OF SIDE FLANGES WHILE PROJECTING IN A DIRECTION FROM SAID WEB PORTION WHICH IS DIAMETRICALLY OPPOSITE TO THAT OF THE SIDE FLANGE WITH WHICH IT IS ASSOCIATED, EACH FLANGE ELEMENT LYING FLUSH AGAINST THE INSIDE SURFACE OF ONE OF THE WALLBOARD UNITS IN ONE OF THE PAIRS OF ADJOINING UNITS IN SAID FIRST AND SECOND SERIES OF UNITS, WHILE THE SIDE FLANGE ASSOCIATED WITH SUCH FLANGE ELEMENT IS INSERTED IN THE RABBET GROOVE IN THE OTHER ONE OF SAID WALLBOARD UNITS IN SAID ONE OF THE PAIRS OF ADJOINING UNITS OF SAID FIRST AND SECOND SERIES OF UNITS, WHEN THE JOINABLE EDGE OF THE ONE WALLBOARD UNIT AND THE RECESSED EDGE PORTION OF THE OTHER WALLBOARD UNIT IN EACH PAIR OF UNITS OF SAID FIRST AND SECOND SERIES OF UNITS ARE BROUGHT INTO ABUTTING CONTACT WITH THE OPPOSITE SIDES OF THE WEB PORTION OF SAID STUD ELEMENT AND WHEN THE RECESSED EDGE PORTION OF THE WALLBOARD UNIT FROM WHICH THE INWARDLY EXTENDING RABBET GROOVE IS ABSENT IS BROUGHT INTO ABUTTING CONTACT WITH THE JOINABLE EDGE OF THE OTHER WALLBOARD UNIT IN EACH PAIR OF UNITS IN SAID FIRST AND SECOND SERIES OF UNITS SUCH THAT THE OVERLAPPED AND ABUTTING EDGES OF ADJOINING PAIRS OF UNITS IN SAID FIRST AND SECOND SERIES OF UNITS LIE ON OPPOSITE SIDES OF THE WEB PORTION OF SAID STUD ELEMENT.