I have heard mention on here a couple of times about bayonet end-cap flourescent fittings and tubes.
Not sure if this is the right sub-forum to start a discussion on them, but I have two Crompton BC end-cap fittings in my collection, pictured below.
I wondered if anyone could date them for me, and thought I would show pictures for anyone interested.
One is an all-pressed-steel construction, and the lamp starter is a small green glass bulb which has a small bayonet fitting to it. The only thing missing are the two covers which go on the end of the tube, to cover the lampholders. I presume this fitting works, but I have never switched it on. I salvaged it about 17 years ago from a factory, it was in the roof above where the offices had been built and had been disconnected.
The other is a steel body and white perspex diffuser, the starter is an aluminium can with (I think) a 4-pin base on it. It was salvaged about 6 years ago from a domestic garage I cleared for someone I worked with, before the garage was demolished.Again, I presume it works but am not sure as the power had already been disconnected from the building before I cleared it.
I also have (but not pictured) an AEI battern fitting which needs restoring but is complete. This was installed in 1961, and removed from service march last year when the tube failed. This lamp had lit approximately 6 hours per day, every single day, from when it was installed and never had a replacement tube. That is a staggering 51 YEARS service. It took some time to explain to the old chap whose house the light was in that you cant get BC tubes anymore!
crompton bc lamps.JPG [ 43.49 KiB | Viewed 14843 times ]