Vintage Insulators Telephone Pole Hemingray Brown Ceramic

As technology developed insulators were needed for telephone lines electric power lines and other applications.

Vintage insulators telephone pole hemingray brown ceramic.

Glass insulators were first produced in the 1850 s for use with telegraph lines. Make offer lot of 5 original antique glass insulator wooden pegs set poles 100 years old. See more ideas about glass insulators insulation antique glass. Vintage glass insulators were first produced in the 1850s for telegraph lines then for telephone and power transmission lines.

9 50 2d 9h. Antique hemingray 17 clear glass insulator threaded for screw top pole mount. Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from. 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.

Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft. Vintage hemingray antique telephone glass insulator no 40. 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. In conjunction with the expansion of rural electrification in the early 20th century there was a major boom in the manufacturing of insulators with production peaking from the 1920s through the 1940s when millions of hemingray dominion and.

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. They insulated and protected the wooden poles from the electricity coursing through the wires. An electrical insulator is a material. Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest.

Top rated seller top rated seller. Ceramic insulator 6 items 6 porcelain insulator 6 items 6 see all. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. In 1850 companies such as hemingray bookfield and whitall tatum started producing glass insulators for telegraph lines telephone and power transmission lines later on.

Vintage small clear glass hemingray telephone pole insulator 12 usa 22 41. They are made from glass porcelain or composite polymer materials nonconductive materials. Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.