John White Howell

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John White Howell

John White Howell (born December 22, 1857 in New Brunswick , New Jersey , † July 28, 1937 ) was an American electrical engineer .

The son of son of Martin Armstrong and Abigail Lucetta (Stout) Howell attended the College of the City of New York (1874-76), Rutgers College (1876-1888) and the Stevens Institute of Technology (1878-1881), where he wrote his dissertation Economy of Electric Lighting by Incandescence .

In 1881 he joined the development department of Edison's Laboratory in Menlo Park, working on the photometric measurement and testing of incandescent lamps and developing methods and procedures for their manufacture. In 1885 he published the results of his extensive tests of lamp life.

When Edison filed another patent lawsuit in 1890, lawyers for the US Electric Lighting Company argued that Edison's patent from 1880 was invalid because the materials and methods described in the patent could not be used to reproduce lamp manufacture. After two of Edison's lab technicians failed in the attempt, Howell was entrusted with it. He succeeded in producing 30–40 working "tar putty" carbon filament lamps for the dish.

From 1893 until his retirement in 1931 he was chief engineer at Edison Lamp Works.

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