Vintage pair of brown glazed threaded porcelain ceramic insulator no markings.
Brown ceramic electrical insulators.
3 vintage 39 99.
6 vint power line electrical porcelain ceramic brown insulator 2 3 4 5 6 9 95.
Set of 3 vintage electric ceramic porcelain brown insulators w metal poles.
Peirce 355 electric insulator brown porcelain ceramic cindysinternetattic.
Brown ceramic electric insulator.
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5 out of 5 stars 156 156 reviews 5 00.
Favorite add to brown porcelain insulator beautiful brown porcelain cable insulator collectible pretty porcelain.
Aug 22 2014 vintage threaded insulator made of ceramic brown color traditional shape.
Vintage terracotta ceramic brown electrical insulator home decor farmhouse.
Vintage brown ceramic stoneware locke power pole insulator made in usa.
2 brown porcelain ceramic insulator electric telephone pole glass vintage.
3 vintage brown ceramic porcelain insulators ohio brass locke m 237.
5 out of 5 stars 602 602 reviews 15 00.
25 pk vintage antique ceramic knob and tube electrical insulators white porcelain.
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To compete some glass companies hemingray and whitall tatum tried to mimic porcelain with amber insulators in the 1930 s and 1940 s.
Antique brown porcelain insulator locke 44 electric pole insulator circa 1900 tazamarazvintage.
From united states c 26 67 shipping.
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Large glass high voltage insulator antique westinghouse dark brown.
25 pk vintage 39 95.
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.
From around 1915 on the porcelain insulator virtually replaced glass on all electrical distribution even at low voltages as the superiority was demonstrated in both insulation quality and strength.