Telephone Ceramic Insulators

Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest.

Telephone ceramic insulators.

5 00 6d 19h 14 90 shipping. Kf ceramic power line insulator 7 tier mushroom style 7 5 12lbs. Vintage brown ceramic railroad telephone insulators lot of 2. In the mid 1960 s a few people began collecting these glass and porcelain insulators.

As technology developed insulators were needed for telephone lines electric power lines and other applications. See more ideas about glass insulators insulation antique glass. Lot of 4 hemmingray no. 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. Telephone wire utility power pole insulator ceramic glazed brown black white vtg. 45 clear telegraph telephone wire insulator. 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 brown ceramic telephone insulator with original wood peg 11 18 36. Telephone insulator cd 128 clear pyrex ab tm reg. 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. Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft.

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. Rare vintage large ceramic high voltage power line insulator. Glass insulators were first produced in the 1850 s for use with telegraph lines.

Porcelain is the most frequently used material for insulators insulators are made of wet processed porcelain. The fundamental materials used are a mixture of feldspar 35 china clay 28 flint 25 ball clay 10 and talc 2. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available.