We collected a smallish DC machine today, on the way back from one of our
customers at Aylesbury.

There is a nameplate, but nearly all the etched/anodised print has gone, leaving
only serial numbers which are stamped.

Pictures are at:

http://www.stationary-engine.co.uk/Misc/DSC02042.jpg

through to

http://www.stationary-engine.co.uk/Misc/DSC02047.jpg

Any ideas would be appreciated.

The commutator diameter and number of segments suggests 24V, there are two pairs
of brushes and what looks like a conventional shunt field, one terminal of which
comes out to the 3-pin socket on the side, along with the brush connections.

It might be a motor, but I feel that it is a generator.

The coupling has an almost snail cam form inside, possibly to take a rubber
insert to transmit the drive. There is a carbon contact on the non-drive end
shaft, presumably for earthing.

Pictures are full-strength, taken with 1.2mp camera. Small cheese-head screws
are 2BA (vent covers etc) Body etc is all cast-iron.

Peter 
--
Peter & Rita Forbes
Email: diesel@easynet.co.uk
http://www.oldengine.org/members/diesel
http://www.stationary-engine.co.uk
http://www.oldengine.co.uk

On Mon, 09 Jun 2008 18:31:06 +0100, Peter A Forbes wrote:

> Pictures are at:

But not one of the plate! OK you say it's it a poor state but tweaking the 
image on computer might draw information from it that the eye can't see.

-- 
Cheers
Dave.

On Mon, 09 Jun 2008 21:55:33 +0100 (BST), "Dave Liquorice"
 wrote:

>On Mon, 09 Jun 2008 18:31:06 +0100, Peter A Forbes wrote:
>
>> Pictures are at:
>
>But not one of the plate! OK you say it's it a poor state but tweaking the 
>image on computer might draw information from it that the eye can't see.

We have already been down that route, Dave, but thanks for the thought.

Polarised light is the next option. It looks like etched brass that has been
chemically erased, but there are faint outlines of letters on there.

Peter
--
Peter & Rita Forbes
Email: diesel@easynet.co.uk
http://www.oldengine.org/members/diesel
http://www.stationary-engine.co.uk
http://www.oldengine.co.uk

On Tue, 10 Jun 2008 08:14:29 +0100, Peter A Forbes wrote:

> We have already been down that route, Dave, but thanks for the thought.

Oh well but maybe some one else doing different tweaks? Or probably more 
important a different eye/brain combination with no preconceptions as what 
is likely to be there.

> Polarised light is the next option. It looks like etched brass that has 
> been chemically erased, but there are faint outlines of letters on 
> there.

Or low angle lighting to create shadows from the tiny etch marks to 
enhance them.

-- 
Cheers
Dave.

On Mon, 09 Jun 2008 21:55:33 +0100 (BST), "Dave Liquorice"
 wrote:

>On Mon, 09 Jun 2008 18:31:06 +0100, Peter A Forbes wrote:
>
>> Pictures are at:
>
>But not one of the plate! OK you say it's it a poor state but tweaking the 
>image on computer might draw information from it that the eye can't see.

I have just noticed that Pete Aldous has something similar on his website:

http://www.stationaryengine.org/generator1.jpg

Different maker but same format and socket by the look of it.

Peter
--
Peter A Forbes
Prepair Ltd, Rushden, UK
peterforbes@prepair.co.uk
http://www.prepair.co.uk
http://www.prepair.eu