John Givan Davis Mack
John Givan Davis Mack (1867–24 February 1924) was a professor of engineering at the University of Wisconsin. He was also curator of the museum of the Wisconsin Historical Society. He was for many years State Chief Engineer.
He graduated from Cornell University in 1888.[1] In 1893 he started work at the University of Wisconsin as an instructor.[2]
In 1898 he registered the patent of the Mack Improved Mannheim Simplex Slide Rule, which he then assigned to Eugene Dietzgen who put the slide rule into production.[3]
Upon his death a portrait of Professor Mack was given to the Wisconsin Historical Society Library to mark over thirty years involvement with the University. It was painted by his friend Morton Grenhagen.[2]
Publications
- Efficiency tests of steam engine governors, and the variation in speed, during the single revolution, (1888) with Charles Billings Dix, Cornell University
References
- ↑ "Commencement! Annother Class Finishes its Work at Cornell.— Farewell Eighty-eight.". The Cornell Daily Sun (21 July 1888): 1. 1888. Retrieved 1 October 2016.
- 1 2 On the Presentation of the Mack Portrait to the State Historical Society The Wisconsin Magazine of History Vol. 8, No. 1 (Sep., 1924), pp. 74-77 Wisconsin Historical Society
- ↑ "Mack Improved Mannheim Simplex Slide Rule by Dietzgen". Smithsonian The National Museum of American History. Smithsonian The National Museum of American History. Retrieved 1 October 2016.
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