Doug MacGillvary ~ Porcelain Threadless Insulators

U-981 U-981    This is the "Elliott Hat." It is another white flint piece from Bennington. Its insulating properties were equal to glass and superior in strength. George Prescott, author of the 1864 History, Theory & Practice of the Electric Telegraph, writes of the Elliott white flint insulator: "Although it is not a perfect insulator, it approaches nearer the requirements of such than any other which has been tried."

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