This self-acting blowpipe is the invention of dentist Jahiel Parmly a cousin of Dr. Eleazar Parmly with whom he apprenticed and assisted in his dental practice from about 1830 to 1840. The furnace is a tin box with a rounded hinged lid with a brass bale handle, and a hinged wall in the front. The back of the box has two rows of circular vents. The back of the furnace has a row of circular vents. Inside is a burner with a wick below a round copper globe. The device could be used for melting metals for castings.
Electric oven devised by Levitt Elsworth Custer (1862-1924), a graduate of the Ohio College of Dental Surgery who established a dental practice in Dayton, Ohio.
Ref: Levitt E. Custer, “Electric Oven,” U.S. Patent 793,424 (June 27, 1905).
This self-acting blowpipe was invented by dentist Jahiel Parmly a cousin of Dr. Eleazar Parmly with whom he apprenticed and assisted in his dental practice from about 1830 to 1840. The furnace is a tin box with a rounded hinged lid with a brass bale handle, and a hinged wall in the front. The back of the furnace has a row of circular vents. Inside the tin case two reservoirs for alcohol sit above and below a copper globe. It is also equipped with two burners, and each has its own extinguisher. The blowpipe and furnace were used for heating a piece of work before soldering and for melting metals for castings.
This device consists of a cylindrical furnace and a horizontal gas burner; the original base has been lost. The furnace is marked “No. 41” had has a metallic tag reading “BUFFALO DENTAL / MANUFACTURING CO. / BUFFALO, N.Y.” The base of the burner is marked, in raised letters, “BUFFALO DENTAL MFG. CO. BUFFALO N.Y.” Thomas Fletcher (1840-1903)—an English dentist, inventor, and pioneer of the gas engineering industry—designed the form.
Ref: Buffalo Dental Manufacturing Co., Catalogue and Price List of Dentists’ Supplies (Buffalo, 1901), pp. 509 and 521.
