1942 Press Photo Assembly of Ignitrons at Westinghouse. - nex66345

Assembly of Ignitrons, Westinghouse devices that convert alternating current into direct current electricity, is shown here in three stages. Developed originally as electric power converters for street cars and railroads, Ignitrons today are aiding the production of the important defense metals, aluminum and magnesium, by supplying direct current for electro-chemical process.

Photo is dated 1942.

Photo measures 10 x 8.25 inches.