Quote:
Originally Posted by brunel
This must be vintage by now.
Ex. British Railways Bardic, red & green aspects.
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These are no longer made, but were made until recently, and huge numbers remain in use.
Good used examples are often listed on ebay, and NOS examples turn up from time to time.
They were manufactured in several case colours including.
"silver" British rail and successor companies.
Olive green, military
Blue, flameproof version to be used by train drivers visiting oil terminals, explosives factories and the like.
Yellow, other uses including private railways and industrial use.
The standard colour change mechanism was for 4 colours, red, green, white, and yellow. The lamps issued to railway guards had a segmented washer that prevented the yellow being selected, the yellow filter is still fitted but can't be selected unless the segmented washer is removed.
Back in the day, railway staff often used these Bardic lamps as bicycle lamps,
They are still used as headlights and tail lights on horse drawn vehicles and steam road vehicles not equipped with other lights.
A far less common version of these lamps can show a red, green, BLUE or white light, intended for police use but never caught on.
The correct battery is an AD28, still available but only made by Eveready AFAIK. It is simple to fit a holder for 3 D cells if required instead of the AD28.
The original bulb was a standard prefocus type 3.8 volt, 0.3amp.
A modern LED bulb is a good retrofit.