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Charles Reginald Underhill

electrical engineer

Charles Reginald Underhill, American electrical engineer. Fellow A.I.E.E., American Association for the Advancement of Science; member Military Order World War, American Legion, National Society Puritan Descendants, Pi Gamma Museum.


Underhill, Charles Reginald was born on November 2, 1874 in Chappaqua, New York, United States. Son of Joshua Bowron and Elizabeth (Green) Underhill.


Descendant of Captain John U. On account of deafness did not attend college. Largely self-educated, specializing through correspondent and textbooks, in mathematics, physics, and engineering.


Employed in inspection department Western Electric County, New York City, 1892-1900. Chief electrical engineer Varley Duplex Magnet Company, Jersey City, New Jersey, and Providence, Rhode Island, 1900-1904. Consulting electrical engineer, New York City, 1904-1909.

Editor and technical writer, Westinghouse Electric & Manufacturing Company, Pittsburgh, 1909-1910. Chief engineer, American Electric Fuse Company, Muskegon, Michigan, 1910-1911. Chief electrical engineer, Acme Wire Company, New Haven, Connecticut, 1911-1921.

Consultant electrical engineer, 1921-1926. With Wappler Elec. Company, Inc., Long Island City, 1926-1929, developing surgical and other high frequency machines. Has made extensive researches in the actions of electromagnets, the results of which have been published largely in Electrical World and transactions American Institute Elec.

Engineers Lectured on “Electromagnets,” in leading colleges universities of the United States Inventor of wireless telegraph printing system and other telegraphic and signaling devices. Commissioned captain, Aviation Section, Signal R.C., 1917. Officer in charge radio tests in flight, Langley Field, on flying status.

Transferred to Air Service, 1918. Served as radio officer, School for Aerial Observers, Langley Field, also as radio statistical officer, Air Service Military Aeronautics.


  • Author: The Electromagnet, 1903. Wireless Telegraphy and Telephony (with W. W. Massie), 1908. Solenoids, Electromagnets and Electromagnetic Windings, 1910.

    Magnets, 1924

  • Coils and Magnet Wire, 1925. Power Factor Wastes, 1926. Electrons at Work, 1933.

    Contributor to Standard Handbook for Electrical Engineers since 1913. Discovered connections between electrical resistivity and heat content of metals.


Fellow A.I.E.E., American Association for the Advancement of Science. Member Military Order World War, American Legion, National Society Puritan Descendants, Pi Gamma Museum.


Married Ella Howell Johnson, April. Children: Charles Reginald, Marguerite Allaire.

Joshua Bowron Underhill

Elizabeth (Green) Underhill

Ella Howell Johnson

Charles Reginald Underhill

Marguerite Allaire Underhill