Ceramic Telegraph Wire Insulators

Vintage hemingray glass insulator no.

Ceramic telegraph wire insulators.

Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires. Electric wire insulator brown porcelain ceramic telephone telegraph railroad railway farm threaded lag bolt antique electricity utility. 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. Lot of 3 vtg antique ohio brass knox guy wire insulators ceramic porcelain brown.

Vintage locke porcelain ceramic insulator usa 9995 brown telegraph electric e2. 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. Set of 2 1930 s large aqua telegraph wire insulators for making light fixtures projects moderncharminteriors. 19 blue green usa telegraph phone electric.

Vintage porcelain glass insulator with telegraph wire still attached. Results pagination page 1. 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. 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.