Abstract: A game call apparatus of improved configuration provides a two part body that includes first and second hollow tubular members that, each have a hollow bore section. The tubular members and provide an open-ended longitudinally extending bore when they are assembled together. The first and second tubular members have correspondingly shaped connectable threads that engage and connect when the two tubular members are assembled together. One of the tubular sections provides a groove to which is attached an O-ring. The o-ring defines a stop that limits travel of one tubular member relative to the other when the threaded connection is made to join them together. By acting as such a stop, the O-ring and threaded connection arrangement insures that the game call will always be reassembled in exactly the same position after it has been disassembled for cleaning.

Abstract: An elongated ultraviolet lamp is surrounded by a water-conducting jacket which serves as a heat sink for the lamp. The water-conducting jacket is made of quartz which is transparent to ultraviolet radiation and a semicylindrical reflective coating is formed on the quartz to serve as a reflector to direct ultraviolet radiation toward one side of the lamp. The water jacket is formed alternately of radially spaced quartz tubes which surround the lamp and conduct deionized water therebetween or is, alternatively, formed of a single tube directly surrounding the lamp, with water flowing over the surface of the lamp and between the lamp and the surrounding quartz tube. The lamp may be placed off center to define a lens-type pattern to assist in the focusing of ultra-violet light to one side of the lamp. The quartz jacket may have a thickened region to serve as a focusing lens on the side of the lamp opposite the reflective coating.