An interesting old Coil

[AlanBeckett]

As promised this is my second Formo Coil, and this is how it was advertised.

           

I didn't actually know that it was Formo when I bought it. The attraction was the Base, which is from yet another Manufacturer. I haven't a clue who 'Bullphone Radio Products' are.
When it arrived it was just as disastrous as the Pictures

A first sweep round with an AVO produced absolutely nothing. Errrrr?
Careful examination of the Wires and Pins showed that:-
It's all solid Wire not Litz.
The Wires were wrapped round the Pins and jammed into the Slots but not soldered although there is Solder at the Base of the Pins.
Everything was corroded.

Unwrapping the Wires and cleaning the Pins produced this:-

       

I can't say that I'm confident I know what it is, but it looks to me like a Medium Wave Coil with an Aerial Tap and a Reaction Winding.

I'll try to straighten out the Windings and see what goes where.

Alan

[Joe]

I wonder if it's been re-wound? It seems odd for the wires to be merely shoved into the slots yet there's solder on the pins.

— Joe

[Alan Douglas]

I know it’s a different type of coil but it’s really cool and it works.  It’s a Signal loose coupler tuning coil I got from America.

If you haven't seen it, there's some historical material on Signal in this discussion on the antiqueradios.com forum:

http://www.antiqueradios.com/forums/viewtopic.php?f=1&t=247416

Whoever Bullphone was, we seem to have two owners here, one coil and one socket. A google search of Bullphone Nightingale turns up some horn speakers by Bullen. One of the images looks remarkably like that coil form.

[unrealdave]

If you haven't seen it, there's some historical material on Signal in this discussion on the antiqueradios.com forum:

http://www.antiqueradios.com/forums/viewtopic.php?f=1&t=247416

Whoever Bullphone was, we seem to have two owners here, one coil and one socket.

It looks like I've got an Arlington Receiving Transformer

That's great thanks.

[AlanBeckett]

Yes that's true Alan.
It says FORMO on the top of the Coil, or at least most of it as it's the broken part.

Don't know Joe, but I guess it's possible.

Alan

[Alan Douglas]

The Arlington (named after the Navy LW station in Arlington, Virginia) was fairly large.  Signal may have made different sizes with the same appearance.

To derail this thread, here is a pair of German coil mounts.  Everything is made of ebonite including the threaded screws that adjust the coil spacing.  
   

[unrealdave]

Very nice - I like these type of coils and down my way there's a bar with a big collection on display - see the pic I took

[ppppenguin]

We also get the impression that you enjoy a wee dram of decent malt from time to time

[unrealdave]

Its all for research - I am trying to understand our northern friends (and fellow Britons!...)

Seriously though I had a bit of a problem displaying the coils until I realized all I had to do was empty the middle shelf - the simple solutions are often the best

[ppppenguin]

Dave, I expect to see you wearing a kilt in the near future

Possibly in the colours of the Third Foot and Mouth

http://www.imdb.com/title/tt0062782/