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Odd Lamps - Railway use or?

British signalling of the past (UK, excepting Northern Ireland)

Odd Lamps - Railway use or?

Unread postby John Webb » Thu Apr 14, 2016 5:49 pm

We've had two recent donations to St Albans South, but we're uncertain that they are railway lamps. If they were railway lamps, what were they used for? Any identification would be appreciated.
Lamp 1
Image

Interior:
Image
(Photos by me)
There are four lenses in all at 90deg to each other. There was no burner in the lamp, and there are no signs of any filters being fitted to the inside.
The lamp has a cruciform vertical spike attached to the centre of the base and apparently designed to slot into something - but what?
Last edited by John Webb on Fri Apr 15, 2016 8:37 am, edited 2 times in total.
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Re: Odd Lamps - Railway use or?

Unread postby John Webb » Thu Apr 14, 2016 6:04 pm

Lamp 2
Front:
Image

Side:
Image
(Photos by me)
This lamp in particular we have our doubts about. It has a handle each side and the design seems to be that it can be held and moved about. There was possibly a flap that could cover the front lens - note the bracket by the top of the lens. The side view seems to have a hole for some form of electrical connector near the bottom. We've no idea what the flap with a hole in on the side is for!
Last edited by John Webb on Fri Apr 15, 2016 8:38 am, edited 1 time in total.
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Re: Odd Lamps - Railway use or?

Unread postby Adrian Crafer » Thu Apr 14, 2016 9:03 pm

John Webb wrote:We've had two recent donations to St Albans South, but we're uncertain that they are railway lamps. If they were railway lamps, what were they used for? Any identification would be appreciated.
Lamp 1
Image

Interior:
Image

There are four lenses in all at 90deg to each other. There was no burner in the lamp, and there are no signs of any filters being fitted to the inside.
The lamp has a cruciform vertical spike attached to the centre of the base and apparently designed to slot into something - but what?


This lamp is made from standard components for Reading GWR/BR(W) signal lamps. The cruciform peg is a standard fitting used when a lamp is mounted on a level crossing gate. There was a version where the lamp rotated as the gates opened and shut. The gate bracket T128 being fitted with a socket and associated mechanism to rotate the lamp. The 1908 version of the lamp was designated H4. The position of the lamp on the gate top edge would have meant the green aspect when displayed to either to the road or rail would have been less than ideal. An alternative use would have been at a specific location such as on the original Timber Post signal at Pheasant Street Crossing Worcester (Vinegar Branch) for the road signal. The later Tubular Post signal used a different arrangement for the road signal and only needed a special lamp with two lenses.

The design of the Reading interior is such that when also modified for four lenses it would have appropriate colour glass slides inserted. There is as you will note a locator peg on the inside of the case this engages with a slot in the reservoir to ensure correct oreintation.

So yes it is railway, - GWR level Crossing Lamp.

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Re: Odd Lamps - Railway use or?

Unread postby JRB » Thu Apr 14, 2016 9:41 pm

More detail than I could have given, but I remember those hinges (same for various lamps). Those castings took a lot of filing before assembly.
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Re: Odd Lamps - Railway use or?

Unread postby Pete2320 » Thu Apr 14, 2016 11:48 pm

I can't add much here but the lens on the second lamp looks rather like a "spreadlight" lens used in colour light signals where a broader beam than normal is required. How does it compare in diameter with the usual cls lens?

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Re: Odd Lamps - Railway use or?

Unread postby John Webb » Fri Apr 15, 2016 8:47 am

Gentlemen - thanks very much.

Pete - re lamp 2, will check lens diameter when next at the box.
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Re: Odd Lamps - Railway use or?

Unread postby ChrisBr » Thu Nov 9, 2017 11:46 pm

Hi,
Just found this topic as I am researching an example of a level crossing light as featured in the question. This was at Stretton on Fosse station and the lights appear to be mounted on frames to the right of each pair of gates. Would these be the mechanisms referred to by Adrian above? If so, is there any further documentation or even drawings available to enable an accurate model to be made?

Many thanks

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