Water curtain nozzle

Claim 1

A WATER CURTAIN FIRE NOZZLE COMPRISING A TUBULAR BODY HAVING A PASSAGE EXTENDING THERETHROUGH BETWEEN AN INLET AND AN OUTLET WHOSE RESPECTIVE AXES ARE ANGULARLY DISPLACED, A SUPPORT SECURED TO AND PROJECTING FROM SAID BODY AND ADAPTED TO POSITION SAID BODY ON A SUPPORTING SURFACE WITH THE AXIS OF SAID INLET SUBSTANTIALLY PARALLEL TO SAID SURFACE, AN ELBOW ROTATABLY MOUNTED ON SAID BODY AT SAID OUTLET WITH A SEALED CONNECTION, SAID ELBOW HAVING A PASSAGE THERETHROUGH BETWEEN ANGULARLY DISPLACED INLET AND OUTLET END PORTIONS, A HOLLOW STREAM SHAPER HAVING AN INLET PORTION ROTATABLY MOUNTED ON THE OUTLET PORTION OF SAID ELBOW WITH A SEALED CONNECTION, SAID SHAPER HAVING A LATERALLY PROJECTING WALL WITH AN ELONGATED NARROW DISCHARGE SLOT FOR DIRECTING WATER LATERALLY OF SAID SHAPER INLET IN A FAN-SHAPED CURTAIN FROM SAID NOZZLE, THE ROTATIVE CONNECTION OF SAID ELBOW AND SAID BODY INCLUDING A TUBULAR ELBOW INLET PORTION ENCIRCLING A TUBULAR OUTLET OF SAID BODY, SAID TUBULAR BODY OUTLET HAVING A PAIR OF SPACED CIRCUMFERENTIAL GROOVES, AN ANNULAR RESILIENT SEALING MEMBER SEATED IN THE GROOVE ADJACENT THE END OF SAID TUBULAR BODY OUTLET AND ENGAGING SAID ELBOW INLET PORTION CONTINUOUSLY CIRCUMFERENTIALLY THEREOF, A PLURALITY, OF SPACED MEMBERS CARRIED BY AND PROJECTING INTO SAID ELBOW INLET PORTION AND SEATING IN THE OTHER CIRCUMFERENTIAL GROOVE OF SAID TUBULAR BODY OUTLET, SAID BODY HAVING AN ANNULAR ABUTMENT ADJACENT SAID TUBULAR OUTLET PORTION, SAID ELBOW HAVING A LATERAL PROJECTION WITH A THREADED BORE THERETHROUGH EXTENDING SUBSTANTIALLY PARALLEL TO THE AXES OF SAID ELBOW INLET PORTION, AND A STUD THREADED IN SAID ELBOW PROJECTION AND BEARING AGAINST SAID ANNULAR BODY ABUTMENT.