[Trade Journal]
Publication: Electrical World
New York, NY, United States
vol. 65, no. 12, p. 748, col. 2
Lava Insulators
Various types of insulators and bushings of lava or silicate of magnesia are being made by M. Kirchberger & Company, 376 Second Avenue, New York. The insulators are cut from solid lava, the material being placed in a turning lathe in its original solid state. Sharp lines, straight shoulders and accurate fittings can be obtained, it is claimed, with the material. The Crescent insulators, as they are called, can be made in a variety of shapes and models, and they are said to possess high heat-resisting qualities.
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| Insulators of Lava |
