From: http://www.liveauctioneers.com/item/16961660_de-moulins-lung-tester-de-moulin-bros

Manufactured by De Moulin Bros. & Co., Greenville, IL.  A selection from the E. Buk Collection of Technology and Invention, Christine Burgin Gallery, NYC, October 29-December 18, 2004. A practical joke device, creating a loud explosive firing and a puff of smoke when the subject blows into the pipe.