Make offer vintage brown ceramic stoneware locke power pole insulator made in usa 17 hemingray turquoise and clear electric insulators.
Vintage ceramic telephone insulators.
They insulated and protected the wooden poles from the electricity coursing through the wires.
Vintage electric ceramic glaze telephone telegraph pole insulator cap brown 19 49 1900 s hemingray 42 usa 24 48 telephone insulator 4 x 3 5 glass bead bottom.
As technology developed insulators were needed for telephone lines electric power lines and other applications.
Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft.
12 large and 5 small.
Vintage joslyn 75 00.
Vintage large brown porcelain insulators pinco 1966 rare.
Telephone insulator cd 128 clear pyrex ab tm reg.
7 vintage brown porcelain ceramic insulators antique telephone insulators c.
In the mid 1960 s a few people began collecting these glass and porcelain insulators.
Telephone wire utility power pole insulator ceramic glazed brown black white vtg.
Firegear match 1850 98 firegear match light fire pit burner kit square bowl pan propane 38x38 k5600 joker 1850 00 k5600 joker evolution 200 hmi light kit ac dc anton plus chimera lightbox.
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.
Lot of 64 99.
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.
Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
Buy ceramic insulators on ebay now.
They are made from glass porcelain or composite polymer materials nonconductive materials.
Glass insulators were first produced in the 1850 s for use with telegraph lines.
Vintage large 75 00.
Vintage joslyn antique 5 brown porcelain electric insulators with bracket.
Vintage glass insulators were first produced in the 1850s for telegraph lines then for telephone and power transmission lines.
Vintage brown ceramic telephone insulator with original wood peg 11 18 36.
Today there are over 2000 collectors and insulator clubs national shows and good reference books are available.