F1 helmet

For centuries, firefighters have worn helmets to protect them from heat, cinders and falling objects. Although the shape of most fire helmets has changed little over the years, their composition has evolved from traditional leather to metals (including brass, nickel and aluminum), to composite helmets constructed of lightweight polymers and other plastics.

Leatherhead is a term for old style leather helmets used by many firefighters in North America. Leatherhead is also slang for a firefighter who uses a leather helmet. The leather helmet is an international symbol of firefighters dating to the early years of firefighting. Typically, traditional leather helmets have a brass eagle adornment affixed to the helmet's top front of the helmet to secure a leather shield to the helmet front. Leather helmets have fallen into disuse, only seeing use in some fire departments in North America, such as New York and Houston. Canadian fire departments (e.g. Toronto Fire Services) that use the Leatherhead have a beaver in place of the eagle for the brass adornment.

The eagle's origins can be traced to approximately 1825. An unknown sculptor created a commemorative figure for a volunteer firefighter's grave. Firefighters did not wear eagles before that, but eagles became associated with fire helmets ever since. The beaver ornament adorning on many Canadian firefighters' helmets is said to represent firefighters' relentless hard work, focused mission and undying dedication.

These ornaments protrude from the helmet and can catch on window sashes, wires and other obstacles, frequently leading to damage. As a result, many fire departments provide traditional helmets using modern plastic and composite helmets without eagles or beavers, jokingly referred to as salad bowls, turtle shells and slick tops due to their streamlined shape. However, many firefighters and fire departments still retain the leather helmet as a matter of tradition.

In 1871, British physicist John Tyndall wrote about his new invention, a fireman's respirator, featuring a valve chamber and filter tube. This device used cotton saturated with glycerin, lime and charcoal to filter smoke particles and neutralize carbonic acid. The device was featured in the July 1875 issue of Manufacturer and Builder.

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