A Miners Helmet.
A USA miners “turtle shell” helmet.
Made from moulded cardboard like material and metal.
This type of helmet is a Flexo Band Cool Cap but known as a “Turtle Shell” helmet. This design of helmet was first patented by Mr Albert A. Strauss in June 1933.
The bracket on the front can hold a carbide or oil wick cap lamp. The helmet pictured is a later make as it has a lamp cable clip attached to the back. They were used in many coalfields around the world.