Sydney EvershedDied 18 Sep 1939 at age 82 (born 16 Sep 1857). English electrical engineer and inventor who co-founded the firm of Evershed and Vignoles, Ltd., makers of electrical instruments (reg. 5 Feb 1895). His electrical business career began with the Hammond company, a pioneer manufacturer of electric incandescent lamps, until it failed. In 1885, he became the manager of the small Goolden and Trotter factory, formed to manufacture the Cardew voltmeter. He acquired the successor business in 1895 with his assistant Ernest B. Vignoles. Their products became internationally known with the trademark “Megger.” They also investigated the magnetic phenomena in the cores of transformers, permanent magnets, and the physical structure of non-conductors. He devised a helm indicator and important gun controls for the Navy used in WW I. The company was taken over by AVO International in 1986.«[Date of death from obituary which says it was a "couple of days after passing his 82nd birthday" implying the date of birth above. Seen elsewhere as 1858.] |
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