Spherolite street lights made their appearance in the 1940s and were designed for residential areas and similar locations where high intensity was not needed and where most of the light produced was directed down and not to the sides. Spherolite refractors were similar to traditional gumballs and did not emit as much side light as teardrop or acorn refractors.
Line Material also made a smaller, Spherolite Jr. model for narrow lanes and other applications where a lower light output was desirable.
Spherolite Jr. street lamps used the same NEMA latch-on design as the regular Spherolites, but had a slightly smaller luminaire body, reflector and refractor. They also typically came with a standard Edison (medium base) socket as they usually used 150 to 200 watt incandescent bulbs or low wattage remote ballasted mercury vapor lamps.
|