I'm trying to work out how many versions of the Oldham single and double (not worrying about racks at the moment) chargers there have been.

I have two tyes:

Early Type H (thank you Ditzy - it's working perfectly)

[photo]Personal-Album-1-Image-55259[/photo]

And each of the latest lead-acid and li-ion single chargers:

[photo]Personal-Album-1-Image-55258[/photo]

(the lead-acid and li-ion look the same, but they have a different part number and a different charging profile)

But I've also seen a double unit that looks like this:

[photo]Personal-Album-1-Image-55261[/photo]

(photo off ebay there)

And the previous (before the current yellow box) single charger looked like this (separate versions for lead acid and li-ion again):

[photo]Personal-Album-1-Image-55256[/photo]

And then in Australia Gilbert Gray appear to make their own double and rack units that look like this:

[photo]Personal-Album-1-Image-55257[/photo]

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Can anybody give me any more info please on:

- just how many types of Oldham single and double charger there are

- and when each type approximately dates to

There is method in this madness!

Thanks :flowers:

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I had a single and double charger that were red, the single I converted to charge an FX2 and someone has the double to charge there light will see what I can find out, I do have an empty single charger box (see pictures).

🔗Personal-Album-1609-Image-55283[linkphoto]Personal-Album-1609-Image-55283[/linkphoto][/link]

🔗Personal-Album-1609-Image-55282[linkphoto]Personal-Album-1609-Image-55282[/linkphoto][/link]

I will see what else I can find out about the other two, as far I can remember the other single one has a plate on it with information on it.

Will get some pictures of the single charger over the weekend and post them up.

Thanks Ogof

It was that red metal charger I was particularly thinking of. I think it's the missing link between the green metal one and the recently superceded black plastic one.

There's no info plate on my green metal charger. Does anybody know the approx age of these different types of charger?

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I know its a bit late but I also seen this

http://tinypic.com/view.php?pic=20gxl60&s=8#.U8p2iPldW2E 

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This is my knowledge based on what I have seen in front of me and relates to lead acid chargers.

I have seen a lot of different chargers designed to take varying numbers of lamps from one to ten.

Different people have manufactured these, but generally the early type has the ubiquitous black rimmed ammeter and works by simple transformer/rectifier/resistance.

Later electronic ones generally have a rather study PCB by Clarke of tool manufacturing fame. I have a pile of these if anyone needs.

Simon, if you want to list all of the chargers produced then I pity you!
:lol:

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Interesting subject you started!

Here is a photo of a fairly typical Lead Acid battery type Oldham cheger of the earlier non electronic type. I have seen them in 1,2,3, and 5 lamp configurations, if memory is serving me correctly.

🔗Personal-Album-128-Image-95718[linkphoto]Personal-Album-128-Image-95718[/linkphoto][/link]

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I suspect that the triple one you have Roy is a Caving Supplies product rather than an Oldham product.

or Stuart Kirby? Which powersupply does it use?

Most of these multipoint-chargers were cut from a charging rack of 17 charging points to whatever number was required.

. Does anybody know the approx age of these different types of charger?

I bought a red Oldham single charger new in 1991, if that helps?

People seemed to mostly buy Caving Supplies chargers in the late 1970s and in the 1980s as they were cheaper than the Oldham ones. Apart from ten-cell ex-colliery chargers seen in caving cottages, the red charger was the first Oldham charger that I encountered.

 

Try this one;

http://i796.photobucket.com/albums/yy244/owd-git/Image138-1.jpg 

:thumbup:

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I'm trying to work out how many versions of the Oldham single and double (not worrying about racks at the moment) chargers there have been.

I reckon you have the earliest specific single lamp unit produced by Oldham there, type H, and the newest, yellow box.
In between I have seen a type 2 version of the small red one with 2 charging points set diagonally and the indicators behind little 'windows', also there is a red version of the white twin charger (identical I expect) with the battery slots made up until recently for the Navy. pretty much covers it for Oldham manufacture non rack chargers!
As an aside I get the impression each caving supplies charger produced differed from the last, from what ever they had to hand!
I still have a Stuart Kirby charger somewhere with a variable volt transformer 'plug' that used to do a good job of reviving T cells.

I suspect that the triple one you have Roy is a Caving Supplies product rather than an Oldham product.

or Stuart Kirby? Which powersupply does it use?

Most of these multipoint-chargers were cut from a charging rack of 17 charging points to whatever number was required.

The unit is self contained, in other words direct from 13amp mains plug. Also no makers name or anything.
I may get to see a double this weekend, will look for any makers name etc.

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Try this one;

http://i796.photobucket.com/albums/yy244/owd-git/Image138-1.jpg 

:thumbup:

This looks identical to a Caving Supplies charger that I had
(but mine was yellow.)