Mystery from a box of (mostly) junk that has arrived in our model railway clubrooms. A couple of O gauge signals of some vintage.
There are no makers marks, but they look commercial rather than home-brewed. The searchlight is 10cm tall, and the two-aspect 9cm.
The searchlight base is fitted with four pins - I guess a pair for each bulb in the head. There are screw terminals on the other one.
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Put a 9v battery on the rear pair of terminals, and the signal lights up. The front two don't do anything. I suspect a blown bulb, but don't fancy disturbing the wrapping on the head, which looks like fabric sticking plaster for fingers!
So, a bit of a mystery - can anyone shed a light on these?
I wonder whether the pins were designed to plug into a valve socket? The latter would have been widely available, I've seen (and used) some vintage radio gear that used similar connectors. This might provide a clue to the manufacturer.
ReplyDeleteI'd not thought of that. They would be the right vintage.
DeleteHave you tried other combinations of the pins? One common and the other leads for 3 bulbs?
ReplyDeleteI wonder if one pin on the searchlight signal is common, and the others for read/yellow/green. Steve Lucas
ReplyDelete