Coronet & Prong Styles. #2 size (2-5/8" lip chimney or 3" slip chimney). Two piece burner. Loose deflector. Patent is for a stationary asbestos wick, a flame regulator/extinguisher operated by the thumbwheel and can use either a lip or slip chimney. The lip chimney is installed and released by a lever on the side. Manufacture is attributed to Benedict & Burnham Mfg. Co. because of the prong decoration.