Posted 4 years ago
This heavy light is considered Explosion Proof, meaning it protected the bulb and electrical connections from the outside environment, so that a spark would not cause an explosion.
It was found in hazardous environments such as munition plants, chemical plants, or fuel processing plants.
The heavy glass globe is nearly a 1/4 in. thick and housing is made of heavy cast aluminum. Benjamin Electric was a major manufactur of industrial lighting back in the early days.
The crenallation design at the top (its coolest feature), is used to tighten the head portion to the housing, making it airt tight. Some of theses lights also had a porcelain enamel shade. I'll post pics of one soon....