Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
Vintage ceramic telephone insulators.
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They insulated and protected the wooden poles from the electricity coursing through the wires.
Vintage glass insulators were first produced in the 1850s for telegraph lines then for telephone and power transmission lines.
In conjunction with the expansion of rural electrification in the early 20th century there was a major boom in the manufacturing of.
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Today there are over 2000 collectors and insulator clubs national shows and good reference books are available.
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Glass and ceramic insulators were originally manufactured in the 1800s to protect telegraph lines and secure them to poles and then later used for telephone and power lines.
Glass insulators were first produced in the 1850 s for use with telegraph lines.
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In the mid 1960 s a few people began collecting these glass and porcelain insulators.
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As technology developed insulators were needed for telephone lines electric power lines and other applications.
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They are made from glass porcelain or composite polymer materials nonconductive materials.
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Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft.
In north america glass was always the predominate material for communications insulators but porcelain has become the standard for power distribution due to its greater strength and surface resistance.
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