“These hats have one serious drawback, aluminum is a great conductor of electricity.” Bullard’s distinctive three-rib, heat-resistant fiberglass hard hat was developed in the 1940s. In the ...

The company’s distinctive three-rib, heat-resistant fiberglass hard hat was developed in the 1940s. In the 1950s and 1960s, thermoplastics replaced fiberglass. In 1982, the standard hard hat ...

Standard hard hat design has evolved over the years, from canvas to metal to fiberglass and, eventually, to plastic. Over time, standard hard hats, like those made at Bullard’s plant in ...

The original Hard Boiled Hat was manufactured out of steamed canvas, glue, a leather brim, and black paint. Over the years, mainly because of advances in materials such as fiberglass, the hard hat ...

By the early 1940s, hard hats transitioned to fiberglass, then a decade later there was a transition to thermoplastics, which is still used today. Gone are the hard hats made from steamed canvas ...

Hard hats come in a variety of bright colors ... soldering large components together like fiberglass or carbon fiber. If ...

He designed the first-ever hard hat in 1915, which was made from layers ... thanks to the use of a new kind of fiberglass composite shell that reduces weight without compromising on protection.

Hard hats evolved over the intervening decades ... so the company started making fiberglass hats that didn’t have that problem. In the ’50s and ’60s, thermoplastics started replacing ...

which are made of fiberglass materials instead of the plastic and composite materials most of the common hard hats are constructed from today. That said, I sell these paintjobs as novelty items ...

Originally made of steamed canvas and glue, hard hats also appeared in aluminum and fiberglass before plastic prevailed. No significant variations emerged until 1996, when Bret Atkins created the ...