Otis's lightning rod and insulator
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[Newspaper] Publication: Bangor Daily Whig and Courier Bangor, ME, United States |
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OTIS'S LIGHTNING RODS. From Professor Loomis, of Georgia Having for the past 8 years given considerable attention to the various departments of electrical science, and having examined many lightning conductors, North and South, I have no hesitancy in pronouncing Otis's Patent Insulated Lightning Conductor as embodying more of the necessary scientific principles, and of the conditions of certain protection, than any now in use in this country. The elegant and perfect method of insulation constitutes its chief excellence while it combines all the advantages of other rods. When the rod passes through glass rings, which are supported by metallic iron bolts, screwing into the walls of the house, as in the old method, the glass is easily broken, 1st, by being interposed between two metallic surfaces, 2d, by the condensation of the atmosphere before an electrical current, 3d, by the violent collapse of the air which immediately follows, and 4th, by the heat of the electrical discharge, like the pouring of hot water into a glass tumbler. The insulators being thus broken, the electrical fluid is thus invited into the building, by the rod coming in contact with the iron bolt. Many houses with this imperfect protection, have been destroyed by lightning. But a few days since I saw a small brick house struck, though protected by two such rods. I regard the inventor of this non conductor as a benefactor of mankind in having furnished the world with so certain a protection to life and property against the most terrific agent. J. N. LOOMIS
This cut represents Otis's Improved Insulator A being the collar which secures the Insulator to the building, B the solid glass bolt introduced between the rod and building, C the lateral point with the aperture through which the rod passes. All orders addressed to the subscribers at Bangor, for Otis's Rods, in this country will be promptly attended to. We will also furnish and put up the Rod running through glass rings for 5-1/4 to 8 cts per foot. B. P. M. KIMBALL & CO.
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