©2008 The Johns Hopkins University
The collection was donated by Hugh Logan in 2006.
Access to the collection is unrestricted.
Lloyd Logan Papers, MS 487
Special Collections,
Milton S. Eisenhower Library,
The Johns Hopkins University
Lloyd Logan was born in Nova Scotia in 1890. As a boy, he moved with his parents to Brockton, Massachusetts. He received his Ph.D in engineering from Johns Hopkins, and taught at the university from 1927 to 1937. In 1937, he left Hopkins for Syracuse University where he served as head of the chemical engineering department.
Logan was the inventor of various chemical control devices and improvements in gas purification, and the author of articles on the control of industrial processes by light-sensitive means. He also wrote and researched in the areas of gas purification, water-gas production, and gas flow formulae.
From 1908 to 1916 he held various technical positions with companies including General Electric, Balke and Knowles Steam Pump Works, Fore River Shipbuilding Company, Stone and Webster, and the Lake Torpedo Boat Company.
Logan also served in France and Belgium during the first world war with the Third Engineering Division of the Canadian Expeditionary Forces. He later studied at the Royal College at Glasgow on a British university scholarship.
After the first world war, Logan worked as a field engineer in several locations (including New Jersy, Minnesota, and Pittsburgh, Pennsylvania) for the Koppers Company. While in Pittsburgh, he had professional contact with JHU professor, Wilbert J. Huff, who later brought Logan to Hopkins as part of the Gas Engineering Department.
Lloyd Logan died on December 29, 1938 at the age of 48 after an illness of several months.
This series contains student notebooks, assignments, and lecture notes from Logan's student days at the Royal Technical College and his teaching days at Johns Hopkins. While studying at the Royal Technical College, Logan took a chemistry class with G.G. Henderson.
This series contains postcards, maps, correspondence, photos and newspaper clippings regarding Logan's service in the first world war. The letters that Lloyd Logan wrote to his mother and other family members provide a day-by-day account of life in the Canadian army. Photocopies of the letters have been bound and are in this series.
The letters start with training in Montreal, and gives menus for meals served there. They continue through his training in England, and active duty in France and Belgium. The bound volume also contains accounts of his studies and activities at the Royal Technical College in Glasgow.
This series consists of copies of U.S., British, and Canadian patents for various of Logan's inventions; correspondence with patent attorneys regarding the patents; and information on various inventions. The patents are for measuring current by its magnetic effect (1915), for a device for controlling specific gravity in the manufacturing process (c. 1916), a British patent for automatically controlling impurities in gas manufacture (1919), and two later US patents for the control of industrial processes by photoelectric means. All of these inventions were conceived of and patented before Lloyd Logan had any academic degrees.
This series contains drafts, reprints, and correspondence related to various articles by Logan.
This series consists of general correspondence.