Detergent dispensing shower head

Claim 1

A DETERGENT MIXING SHOWER HEAD COMPRISING A GENERALLY BELL-SHAPED HEAD CASING THE SMALLER UPSTREAM END OF WHICH IS ADAPTED TO BE CONNECTED TO A CONDUIT FOR SUPPLYING WATER TO THE INTERIOR THEREOF, THE LARGER OUTER END OF SAID HEAD CASING HAVING AN ANNULAR OUTWARDLY FLARED INNER FACE EXTENDING TO THE OUTER END THEREOF, AN ANNULAR GROOVE EXTENDING CIRCUMFERENTIALLY OF SAID FACE BETWEEN THE INNER AND OUTER ENDS THEREOF, A CLOSURE PLUG SECURED WITHIN THE OUTER END OF SAID HEAD CASING AND HAVING ITS PERIPHERY TAPERED IN CONFORMITY WITH SAID FLARED INNER FACE THEREOF, THEREBY CLOSING THE INNER SIDE OF SAID GROOVE AND PROVIDING AN ANNULAR CHAMBER IN SAID FACE OF SAID HEAD CASING, AN ANNULAR SERIES OF CIRCUMFERENTIALLY SPACED OUTWARDLY FLARING SPRAY GROOVES IN THE TAPERED SURFACE OF SAID PLUG, EACH SAID SPRAY GROOVE COMMUNICATING AT ITS INNER SMALLER END WITH THE INTERIOR OF SAID HEAD CASING AND AT ONE SIDE THEREOF WITH SAID ANNULAR GROOVE TO PROVIDE A COMMON MIXING CHAMBER THEREIN, AND MEANS FOR SUPPLYING A DETERGENT TO SAID ANNULAR GROOVE.