The following short article appeared in the January 15th, 1915 issue of the Electrical World and may be of interest to collectors and historians interested in early automobile lamps or Herman J. Jaeger's incandescent lamp company. The b/w illustration appeared with the original article. A photo appears at the end of this page illustrating an original Jaeger nitrogen filled automobile lamp from the author's collection.

Nitrogen-Filled Automobile Head-Lamp

A nitrogen-filled bulb designed for use with automobile head-lamps is being made by the H. J. Jaeger Company, 68 Hudson Street, Hoboken, N. J. The filament of this high-efficiency lamp is made of drawn-tungsten wire coiled into a helix and mounted within a very small space, concentrating the light. The lamp is in two sizes. In the illustration is shown a full-size drawing of the larger lamp. The lamps operate on from 6-volt to 14-volt circuits, giving 24 cp and 32 cp for the larger lamp and 15 cp and 21 cp for the smaller. The average specific consumption of either lamp is 0.5 watt per cp.

Jaeger nitrogen filled dual filament headlamp with original carton.

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