Elastic Perforated Ear Protector
This ear protector is designed to cover a persons ear for protection. they consist of a thermoplastic or metal head band, that fits round the top of the head, and a pad at each end to cover the external ears. Thermal earmuffs are worn in cold environments to keep a person's ears warm.
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