I'm thinking the composite that holds the envelope to the screw base would loosen and detach.
I'm going to attempt a summary:
Mazda was GE's name for a standardized lamp system. These lamps used the then-new tungsten filament technology. This was an improvement from the old carbonized filaments. GE then liscensed the use of the Mazda name to other manufacturers, such as Westinghouse, to denote to the consumer that the lamps bearing such a marking were quality, standardized lamps.
As for reflectors, I have a few theories.
The first is that most reflectors were silvered glass. This would probably have been too expensive for the standard spotlight. Seeing as most manufacturers saw a fixture with a lense as a great improvement over say, a box flood, they might have seen no need for the "extra" reflector.
Also, in the early days most P/C fixtures with incandescent bulbs were refitted arc spots. I don't think many arc spots used reflectors, if any did at all. I believe that all the knobs and levers for arc control meant a reflector got in the way.
I'm going to attempt a summary:
Mazda was GE's name for a standardized lamp system. These lamps used the then-new tungsten filament technology. This was an improvement from the old carbonized filaments. GE then liscensed the use of the Mazda name to other manufacturers, such as Westinghouse, to denote to the consumer that the lamps bearing such a marking were quality, standardized lamps.
As for reflectors, I have a few theories.
The first is that most reflectors were silvered glass. This would probably have been too expensive for the standard spotlight. Seeing as most manufacturers saw a fixture with a lense as a great improvement over say, a box flood, they might have seen no need for the "extra" reflector.
Also, in the early days most P/C fixtures with incandescent bulbs were refitted arc spots. I don't think many arc spots used reflectors, if any did at all. I believe that all the knobs and levers for arc control meant a reflector got in the way.
Last edited: