Their sole purpose was to insulate the wire from the wood reason for which materials such as glass porcelain or composite polymer materials had been chosen.
Vintage insulators telephone pole hemingray brown ceramic.
An electrical insulator is a material.
Today there are over 2000 collectors and insulator clubs national shows and good reference books are available.
In the mid 1960 s a few people began collecting these glass and porcelain insulators.
Vintage hemingray antique telephone glass insulator no 40.
As technology developed insulators were needed for telephone lines electric power lines and other applications.
Aqua ice blue am tel tel co glass telephone toll insulator.
Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
In 1850 companies such as hemingray bookfield and whitall tatum started producing glass insulators for telegraph lines telephone and power transmission lines later on.
Make offer lot of 5 original antique glass insulator wooden pegs set poles 100 years old.
Glass insulators were first produced in the 1850 s for use with telegraph lines.
Antique hemingray 17 clear glass insulator threaded for screw top pole mount.
Top rated seller top rated seller.
Vintage small clear glass hemingray telephone pole insulator 12 usa 22 41.
9 50 2d 9h.
They insulated and protected the wooden poles from the electricity coursing through the wires.
Shop for and learn about vintage glass insulators.
See more ideas about glass insulators insulation antique glass.
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.
Vintage glass insulators were first produced in the 1850s for telegraph lines then for telephone and power transmission lines.
They are made from glass porcelain or composite polymer materials nonconductive materials.
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.
Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest.
Ceramic insulator 6 items 6 porcelain insulator 6 items 6 see all.