Adlake switch stand lamp question

Affiliate Disclosure: We may receive a commision from some of the links and ads shown on this website (Learn More Here)

I just found this forum and this is my first time to post. I hope someone here can help me with a switchstand lamp question. I recently bought an Adlake (#1379?) lamp to mount on an old switchstand I have set up in my back yard. The post on the switch stand, above the target, is 1.25" square and the hole in the lamp is rectangular - approx. 1.125" by 1.3125, so it doesn't fit. Did Adlake make an adapter to make these fit or were there different lamps with different size holes? I've searched the web but can't find anything on this.

As always any help is greatly appreciated.
adlake lamp

Here is what my Adlake looks like.

The adapter inside is 1 1/8 " x 1 "
The bottom of the lamp is 2" x 1 3/8"

There is a screw threaded into the adapter and it kinda floats in the obong hole of the lamp base.

The Handlan lantern has a fixed 1" x 1 1/8" ish , no adapter.

Hope this helps.
Thanks for the response.
My problem is the inverse of what you've shown. The switch stand shaft is larger than the hole in the bottom of the Adlake lamp. I would need something that would fit over the 1.25" square shaft and then step down in order to insert into the smaller rectangular hole in the lamp. Apparently the lamp was not intended for this particular switch stand.

I'm trying to remember for sure, but I'm somewhat sure that I have seen a stepdown from switch stand to smaller lamp base. The railroad would have made whatever they needed to make it work.

Go to Lowes and look for square steel stock and have some one weld two pieces together.
The only other option is to wait for the time machine to appear and then we can go 1970's rail yard and measure up what you need.
I'm going to look at what you suggested about fabricating an adapter. A piece of rectangular bar stock welded into a piece of square tubing should do the trick.
I wish I could go back to the 1970's. Back then I bought a Pyle-National headlight off of a D&RGW locomotive from a scrap dealer in Pueblo, Colorado. He had scrapped out several of their steam locomotives and still had some of the parts. I could have bought the marker lights off the same locomotive that my headlight came from but decided $50.00 for the pair was too expensive. Oh well!
Thanks again,
There were adapters made that fit on the switchstand poles. That was because each manufacturer and railroad made the stand poles different sizes. The reason the sockets on the bottom of the switch markers are rectangular is so that the marker would be put on the switch the right way each time. If it were square, it could be put on wrong and indicate a switch was normal when it wasn't.

Larry S.
Thanks for the response. I suspected something like what you described existed. Any chance you know of any railroadiana collectors/dealers who might have someting like this for sale?
Thanks again and best regards,
Jim is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to