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Charles Herschel Koyl


Charles Herschel Koyl, Canadian engineer.


Koyl, Charles Herschel was born on August 14, 1855 in Amherstburg, Ontario. Son of Review Ephraim Lillie and Frances (Culp) Koyl.


Bachelor of Arts, Victoria College, Cobourg, Ontario, 1877. Post-graduate student Johns Hopkins, 1879-1881, fellow in physics, 1881-1883.


Physical science master Wesleyan College, Stanstead, Quebec, 1877-1879. Head department mathematics and physics, high school, Washington, 1885-1887. Professor physics, Swarthmore College, 1887-1889.

Vice president National Switch & Signal Company, 1859-1891. President National Drying Company, 1891-1893. Scientific assistant to Colonel Waring, commissioner street cleaning, New York, 1895-1896.

Manager Automatic Banjo Company, New York, 1896-1899. Manager Industrial Water Company, 1899-1902. Consultant practice; engineer water service G.N. Railway, 1912-1919, and of Commerce.,M.&St.P. Railway, since 1919.

Delegate to International Congress of Electricians, Philadelphia, 1884. John Scott Legacy Medal, Franklin Institute, for invention of the parabolic semaphore, 1889. Home: Chicago, Ill.


Married Georgiana Thacher Washburn, November 6, 1885. Married second, Adèle T. Sanford, April.

Review Ephraim Lillie Koyl

Frances (Culp) Koyl

Georgiana Thacher Washburn

Adèle T. Sanford