A Conductor Featuring a Spark Arrestor
A spark arrestor is a device intended to prevent combustible materials, usually sparks or other tiny flaming debris, from escaping into areas where they might start fires. They are most commonly used in conjunction with motor vehicles, as well as improving safety within fireplaces, and various electrical equipment.
Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)
Courtesy the private collection of Roy Winkelman