This is an old late 40s to early 50s incandescent fixture! It is a Line Materials gumball! It has external wiring...but there is something a bit special and weird about this certain setup that made me think it was PARALLEL wired in the FIRST PLACE!
It does have a series wiring socket assembly...but there was one part that seemed to be configured...instead of a rupture disc, it had a a much thicker cylinder shaped ceramic rod between the 2 contacts..plus one of the 2 contacts had a stainless steel metalic piece attached to it (in a factory style manner) and that piece of metal PREVENTED me from pulling out the socket assembly that I had to unscrew the assembly to get the socket out!
It's not an exact fixture Joe, there was many of those still in service in the 50s...I mean MANY of the exact same ones all over the Northern Central MD.
I only know of one or two still in service...all other are long gone (and some that still has same arm but newer fixture) Often I see those same 5 foot arms (yes they are pretty much 5 footers) usually hold GE M-100s which must mean those open bottom 100 watt replaced the incandescent!
The gumball glass and reflector isn't really orginal to the fixture though, but the rest, the arm, the insulator, the wires and the head are all original together...but the glass and refractor may be slightly newer since the PAT date on the gumball glass says 1958. But it's pretty much the same...
Nice score....looks similar to my Spherolite, except with the series wiring set up and a different refractor mount (and of course, it's green). I had similar problems getting old lights off their rusted arms when I saved a set of gumballs from a farm....it took some PB blaster, some days of soaking and reapplication, and a lot of pulling, twisting and swearing!
A lot of those old HV series incandescent lamps were converted to remote ballast MV. The Jones Socket recepticle blades would be switched out with a set that didn't close when the socket was removed and either an insulator was cemented into place where the old rupture disk would have been placed or a non-series removable Jones socket was used. I wouldn't be surprised if the reflector was L-M and the lamp originally had a teardrop refractor that was later replaced with a gumball style cup. Good find!
this whole thing is LM it always has been gumball since day one.....even the arm is a LM an older one. Check the link I posted that took pkace in the 50s.....
I only know of one or two still in service...all other are long gone (and some that still has same arm but newer fixture) Often I see those same 5 foot arms (yes they are pretty much 5 footers) usually hold GE M-100s which must mean those open bottom 100 watt replaced the incandescent!
The gumball glass and reflector isn't really orginal to the fixture though, but the rest, the arm, the insulator, the wires and the head are all original together...but the glass and refractor may be slightly newer since the PAT date on the gumball glass says 1958. But it's pretty much the same...
Haven't put a lamp in....but it had an pretty old medium to mogul adaptor...