Electric Wire Insulators

Back in the mid-1900's electric cooperatives strung electric wires to rural areas far and near. Many wires were strung on crossbars that were attached to wood poles. The electrical wires were wound around glass insulators like the ones you see in the photo. Glass is not a conductor of electricity not does it heat up from the electric current in the wires. Most the time electric wires were strung along existing the rights-of-way of public roads or railroads. Boys walking along those rural roads or railroad tracks would challenge each other as to how many of those glass insulators they could break with rocks from point A to point B.