PORCELAIN FOR DEFENSE
CD 1963052 E&MP 23.005
Electric Insulating and Insulators
Dec. 6, 1940
Forty-five thousand porcelain insulators in a rush order for a Northwestern national defense power line must take a trip around this rotating machine at the Derry, Pa., Works of the Westinghouse Electric & Manufacturing Company.
At the left [right], insulators are shown receiving a shower bath of glazing solution, after which they pass before three infrared lamps which dry them on both sides in a few minutes.
These are special Westinghouse lamps which give off an abundance of the penetrating infra-red light that dries many paints, lacquers and other substances 10 to 20 times as fast as other forms of heat.
Original Caption by Science Service