Updated 18-XI-2018

Harold D. Blake

This article was written by fellow lamp engineer and collector Edward J. Covington, and originally appeared on his own website of biographical sketches of persons involved in the lamp industry. Following his passing in February 2017, and with kind permission of his family, Ed's words have been preserved here in the hope of maintaining access to his writings for the benefit of subsequent generations.

The General Electric Fluorescent Lamp Pioneers

A native of Naples, NY, Harold Doolittle Blake (Mar 3, 1884 - Aug 10, 1981) joined the Engineering Department of the National Electric Lamp Association on Jul 20, 1909. He transferred to the Lamp Development Laboratory in January 1911; later he was promoted to the position of Technical Director.

In the pre-fluorescent lamp days Blake contributed to the advancement in the use of getters in incandescent lamps. During his role as Technical Director a flood of new products were introduced into the marketplace. It was in this role (as a consultant) that he also acted during the development of the fluorescent lamp. One of his patents detailed the base for the LUMILINE lamp, which was also used on the first fluorescent lamp.

Harold Blake married and had four daughters. He retired to Mount Dora, FL.

  1. US 2,158,849 - Lumiline lamp base