Telephone Ceramic Insulators

Make offer vintage brown ceramic railroad telephone insulators lot of 2.

Telephone ceramic insulators.

Vintage brown ceramic railroad telephone insulators lot of 2. Rare vintage large ceramic high voltage power line insulator. Off back csa ma. 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.

In the mid 1960 s a few people began collecting these glass and porcelain insulators. Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. Vintage insulators are most commonly made out of porcelain or glass materials and they come in a wide variety of colors and shapes making each item a unique.

See more ideas about glass insulators insulation antique glass. 5 00 6d 19h 14 90 shipping. 45 clear telegraph telephone wire insulator. Lot of 4 hemmingray no.

The fundamental materials used are a mixture of feldspar 35 china clay 28 flint 25 ball clay 10 and talc 2. Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft. Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph 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.

Vintage joslyn 103 spool insulators ceramic porcelain 3 telephone pole power. Glass insulators were first produced in the 1850 s for use with telegraph lines. Insulators were first developed in the mid 1800s to be used on telegraph and telephone lines to contain the electrical current and prevent the current from entering the ground below. 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.

As technology developed insulators were needed for telephone lines electric power lines and other applications. Porcelain is the most frequently used material for insulators insulators are made of wet processed porcelain. Vintage brown ceramic telephone insulator with original wood peg 11 18 36.