Hi Gary

I have a Brand new Kingsley Ferrotune radio foundation kit
left to me by my late uncle,it was posted to him in 1946 I unwrapped it two years ago I also have one of the many he made
on loan from his towns local museum to copy as this one has to go back.Yes the tuner did have a cover it was made of black plastic and for some reason it has deformed also the tuner it self is in bad shape as the shaft bearings have corroded away.I have many pictures of them if you would like to see them.

Cheers Sydeshow

Yes thanks?
Post them on the Forum or email them to me and I will post them?
Thanks,
Gary

I have a Brand new Kingsley Ferrotune radio foundation kit
left to me by my late uncle,it was posted to him in 1946

Amazing!

Here are Sydeshow's photos. I will post these on the Radiomuseum as well:-

http://www.radiomuseum.org/r/kingsley_ferrotune_kft1.html.

Image Link
Image Link
Image Link
Image Link
Image Link

So its a plastic cover.

Cheers,
Gary

That photo sure gives an indication of why your cover's gone missing.

I tried looking up the patent numbers stamped on the side of the tuning mechanism, Aust 12663 and USA 391875 but all that came up was totally unrelated art.

I got this one out of a portable that was a bit too far gone:
Image Link
Image Link

I was wondering about the claim in the ad that this system was "robust". There would seem to be more potential mechanical points of failure than a gang with only one axle. Also wondered how the slugs were mounted to take continuous action over a long period, unlike most tuning slugs I've seen that are only used for rare adjustment. Seems the 1946 example has not lasted as well as a gang tuner of the same vintage.

Of course it they don't last as well, that only makes them more "collectable".

Maven

Permeability tuning must have been fairly robust because push button car radios used it from the mid 40’s. They used it because of the ease of design in setting up the push buttons to lock the stations in.