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- Single-Connection McCoy Graphite Lubricator for Low-Pressure, Mallet-Type Steam Locomotives, July 1916 - Canadian-American inventor Elijah McCoy developed a mechanical lubricator to oil slide valves on steam locomotives. McCoy's device automatically supplied measured amounts of oil to valves, reducing the need for crews to lubricate them manually. This updated version from 1916 was designed for Mallet compound steam locomotives, which used steam twice -- in high- and low-pressure cylinders.
- July 25, 1916
- Collections - Artifact
Single-Connection McCoy Graphite Lubricator for Low-Pressure, Mallet-Type Steam Locomotives, July 1916
Canadian-American inventor Elijah McCoy developed a mechanical lubricator to oil slide valves on steam locomotives. McCoy's device automatically supplied measured amounts of oil to valves, reducing the need for crews to lubricate them manually. This updated version from 1916 was designed for Mallet compound steam locomotives, which used steam twice -- in high- and low-pressure cylinders.
- U.S. Patent 1,521,287 for the Acoustic Apparatus (Osophone), Granted to Hugo Gernsback December 30, 1924 -
- December 30, 1924
- Collections - Artifact
U.S. Patent 1,521,287 for the Acoustic Apparatus (Osophone), Granted to Hugo Gernsback December 30, 1924
- Patent Drawing for the Burroughs Calculating Machine, August 21, 1888 -
- August 21, 1888
- Collections - Artifact
Patent Drawing for the Burroughs Calculating Machine, August 21, 1888