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Hunts caps

 
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Hunts caps

Post by crackle » Fri Oct 02, 2015 9:25 pm

I have not come across these Hunts type of capacitor before, nor have I seen the logo with "HH" superimposed across the name.
They are from the KB 640 I recently repaired, and I don't think they were original, would anyone care to date them. The code on the lower one is WHA. The banded end on the yellow caps has "outer foil" written around it.
hunts caps.jpg

Thanks
Mike

 
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Re: Hunts caps

Post by Briancuff » Fri Oct 02, 2015 9:39 pm

I've met this type of cap in a pre-war TV so that puts them in the second half of the 1930s or maybe earlier. I remember the logo well as I had to Photoshop the scan I used for the new labels.

 
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Re: Hunts caps

Post by Peter88gate » Fri Oct 02, 2015 9:50 pm

I don't know the date of them, but I think the letters are a sort of stylised logo AHH. The company was originally A. H. Hunt Ltd. of Garratt Lane, Wandsworth although they were at other places in London from 1901.

Peter

 
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Re: Hunts caps

Post by crackle » Fri Oct 02, 2015 10:31 pm

So they are pre-war then!
They were "tagged" in with full length of the leads, and the soldering method did not look original. (like the rest of the joints),
Maybe they were old stock that somebody had in the 40's or 50's and were fitted then.
One of them was so bad it was drawing over 3mA at 160v. I was surprised to see it was tagged onto the existing decoupling capacitor, leaving them both in circuit. With the 2 lots of leakage combined I believe this must have contributed to the V1 & V2 screen grid resistor R7 burning out.

Mike

 
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Re: Hunts caps

Post by Cathovisor » Fri Oct 02, 2015 11:22 pm

Yep, definitely pre-war. Hunts used to advertise extensively in the trade journals, especially Radio Marketing and Service Engineer, often taking full front page ads. That's where I recognise the logo from.

 
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Re: Hunts caps

Post by Lucien Nunes » Wed Nov 11, 2015 6:29 am

The code does not give the decade but if they are 1930s then
WAN: Week 19, 1937
WHA: Week 12, 1939.

 
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Re: Hunts caps

Post by crackle » Wed Nov 11, 2015 7:30 am

Thanks, so whoever fitted them did use caps from the right era. The KB 640 is dated 1938.

Mike

 
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Re: Hunts caps

Post by Refugee » Wed Nov 11, 2015 11:04 am

Those yellow Hunts capacitors have a very post war look about them to me. The lower one in the photo even looks like the paper label has been stuck over branding from another manufacturer.

 
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Re: Hunts caps

Post by Rallycoordinator » Wed Nov 11, 2015 5:13 pm

Refugee wrote:The lower one in the photo even looks like the paper label has been stuck over branding from another manufacturer.

It does appear that these capacitors may have been re-labelled. Another possible explanation may have been to utilize a sleeve already printed for a different capacitor specification (for economy or material shortage reasons).

Certainly worth keeping as part of the set's history.

Mike


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