Telephone Ceramic Insulators

45 clear telegraph telephone wire insulator. 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.

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Telephone ceramic insulators.

Vintage brown ceramic telephone insulator with original wood peg 11 18 36. As technology developed insulators were needed for telephone lines electric power lines and other applications. Make offer vintage brown ceramic railroad telephone insulators lot of 2. Lot of 4 hemmingray no.

Telephone insulator cd 128 clear pyrex ab tm reg. Kf ceramic power line insulator 7 tier mushroom style 7 5 12lbs. Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft. 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 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. Off back csa ma. Rare vintage large ceramic high voltage power line insulator. Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest.

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. Porcelain is the most frequently used material for insulators insulators are made of wet processed porcelain. 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. See more ideas about glass insulators insulation antique glass.

Glass insulators were first produced in the 1850 s for use with telegraph lines. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. 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. The fundamental materials used are a mixture of feldspar 35 china clay 28 flint 25 ball clay 10 and talc 2.

Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires. Vintage brown ceramic railroad telephone insulators lot of 2. Vintage joslyn 103 spool insulators ceramic porcelain 3 telephone pole power.

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