Spray-shower with nozzles, particularly flat fan nozzles

Claim 1

Spray-shower apparatus for insertion into an opening in the spray-shower pipe having a curved inside surface and a curved outside surface comprising, nozzle base means for supporting a spray-shower nozzle means in predetermined relationship to the pipe axis with the plane of the fan spray emitted by the nozzle means forming an angle with said pipe axis slightly greater than zero so that the ends of said fan spray overlap the ends of any adjacent fan spray emitted by adjacent nozzle means seated in said pipe without interference and having a front surface for facing the inside of said pipe that is curved in conformity with the inside surface of said pipe, said nozzle base means being formed with a recess for supporting itself at said pipe outside surface, said nozzle base recess having a top edge and running edge of shape corresponding to respective lines of self-intersection of said nozzle base means with the outside surface of said pipe when seated thereon, said nozzle base means including keying means for engagement with said nozzle means to maintain said nozzle means in said predetermined relationship when said nozzle means is seated in said nozzle base means and said nozzle base means is seated in an opening in said spray-shower pipe wall with said recess engaging said pipe outside surface, said nozzle base means being a cast part, said pipe being formed with said opening, said nozzle base means being seated in said opening with said front surface conforming to said inside surface, said nozzle means being seated in said nozzle base means with means defining a slit-like aperture extending into said pipe radially inward of the inside surface thereof with the long axis of said aperture forming an angle with the axis of said pipe that is slightly less than 90°.