Julius Kahn (inventor)
| Julius Kahn | |
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| Born |
March 8, 1874 Münstereifel, Germany |
| Died | November 4, 1942 (aged 68) Cleveland, Ohio, U.S. |
| Nationality | American |
| Education | University of Michigan |
| Occupation | engineer |
| Known for | reinforced concrete |
| Spouse(s) | Margaret Kohut |
| Children | Gisela, Katherine, Julius Jr. |
| Relatives | Albert Kahn, brother |
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Julius Kahn (March 8, 1874 – November 4, 1942) was an engineer, industrialist, and manufacturer. He was the inventor of the Kahn System, a reinforced concrete engineering technique for building construction. The Kahn System that he patented in 1903 was used worldwide for housing, factories, office and industrial buildings. His system was used in 134 US cities by 1939. His engineering system for building construction was also found then in Africa, Europe, Canada, China, Brazil, and Mexico. In Yokohama, Japan, his system was used in an automobile factory. His unique engineering system of construction was used also in airplane plants, warehouses, docks, foundries, creameries, filtration plants, rubber factories, steel plants, silos, distilleries, smelters, and textile mills.
Kahn was born in Münstereifel, Germany, March 8, 1874. He was raised in Detroit, Michigan. Kahn came to Detroit in 1881 from Germany with his family (five brothers and two sisters) when he was six years old, settling first in Baltimore, Maryland in 1880. His father Joseph (1860–1924) was a rabbi and ran a restaurant. Kahn helped in his father's restaurant business and sold newspapers. His mother Rosalie was skilled in music and art. Kahn went to the Detroit Public Schools where he received his elementary schooling, doing the normal four-year high school in three years.
Kahn received his higher education at the University of Michigan, which his older brother Albert helped finance. He received a Bachelor of Science and a degree of Civil Engineer in 1896. Upon graduating from U of M he did drafting work for the Union Bridge Company of New York. Another career position was with the United States Navy as an engineer. Another engineering position he had was with the United States Army Corps of Engineers. He also worked for C. W. Hunt Company of New York. In 1900 Kahn took a position in Japan in the engineering, construction and maintenance of iron and sulfur mines.
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