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  2. Hemingray Glass Company - Wikipedia

    en.wikipedia.org/wiki/Hemingray_Glass_Company

    The Hemingray Glass Company was an American glass manufacturing company founded by Robert Hemingray and Ralph Gray in Cincinnati in 1848. In its early years, the company went through numerous and frequent name changes, including Gray & Hemingray; Gray, Hemingray & Bros.; Gray, Hemingray & Brother; Hemingray Bros. & Company; and R. Hemingray & Company before incorporating into the Hemingray ...

  3. Insulator (electricity) - Wikipedia

    en.wikipedia.org/wiki/Insulator_(electricity)

    Suspension insulator - For voltages greater than 33 kV, it is a usual practice to use suspension type insulators, consisting of a number of glass or porcelain discs connected in series by metal links in the form of a string. The conductor is suspended at the bottom end of this string while the top end is secured to the cross-arm of the tower.

  4. Insulated glazing - Wikipedia

    en.wikipedia.org/wiki/Insulated_glazing

    Single pane glass is a very poor insulator (R-value of around 1, RSI below 0.2), so single panes provide very little insulation. Glass coatings are frequently employed such as partially reflective or colored coatings to reduce insolation, and coatings to reflect infrared.

  5. Whitall Tatum Company - Wikipedia

    en.wikipedia.org/wiki/Whitall_Tatum_Company

    News article in the "Bridgeton News", January 3, 2007 on the demolition of the Whitall-Tatum, Kerr, Ball-Foster glass works buildings. Richard Wentzel, chapter in "Insulators: A History and Guide to North American Glass Pintype Insulators" by John & Carol McDougald (1990). John M. Whitall: The Story of His Life, by his daughter Hannah W. Smith.

  6. Brookfield Glass Company - Wikipedia

    en.wikipedia.org/wiki/Brookfield_Glass_Company

    Brookfield Glass Company was an American glass company based in Brooklyn, New York, from 1864 to c. 1912, and in Old Bridge, New Jersey, from c. 1906 to 1921. it was known for producing industrial glassware such as jars, bottles, and electrical insulators. [1]

  7. Victor Insulator Company - Wikipedia

    en.wikipedia.org/wiki/Victor_Insulator_Company

    Victor Insulators, Inc. based in Victor, New York (founded 1893 by Fred M. Locke) is the oldest insulator company in North America. They originally made glass insulators for electrical lines. They suspended operations during the Great Depression , but resumed operations in 1935 as Victor Insulators.

  8. Strain insulator - Wikipedia

    en.wikipedia.org/wiki/Strain_insulator

    A typical strain insulator is a piece of glass, porcelain, or fiberglass that is shaped to accommodate two cables or a cable shoe and the supporting hardware on the support structure (hook eye, or eyelet on a steel pole/tower). The shape of the insulator maximizes the distance between the cables while also maximizing the load-bearing transfer ...

  9. Western Flint Glass Company - Wikipedia

    en.wikipedia.org/wiki/Western_Flint_Glass_Company

    The most well known products of the Western Flint Glass Company are their telegraph insulators. They are known to have manufactured consolidated design (CD) numbers 106, 121, 134, and 162. Evidence also strongly suggests that CD numbers 145, 190/191, 288, and 298 were produced, although none have been found to date marked with the company name. [1]

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