Small twin cylinder compressor pump identification.

[LathejackParticipant @lathejack]

Can anyone identify this cute little twin cylinder compressor pump I bought from the Autojumble last week?

It is 150mm high, 100mm long and made from cast iron. The cylinders are cast integral with the crankcases, and the separate base casting contains an oil sump. There is no makers name or mark on it at all, not sure if it is a model pump made from a kit. It does work quit well.

[LathejackParticipant @lathejack]

[Chris HembryParticipant @chrishembry84309]

Can't help with identification, but I also have a set of castings for this compressor. Only difference seems to be that mine has a 4 spoke fan/pulley. Had the parts a long time but think they were a one-time student project.

[Michael GilliganParticipant @michaelgilligan61133]

I think it's the Stuart one: **LINK**

https://www.stationroadsteam.com/stuart-turner-twin-cylinder-compressor-pump-stock-code-8071/

MichaelG.

.

https://www.brightontoymuseum.co.uk/index/Pumps_(Stuart_Turner)

Edited By Michael Gilligan on 28/09/2018 21:56:10

[LathejackParticipant @lathejack]

Thanks Chris, interesting that it may have been a student project, and that you have a set of castings for one.

I took a peek inside, this shows the crankshaft supported on ball race bearings at each end. Bronze connecting rods with oil dippers, and the split big end caps with wired on screws.

………….The separate base casting formed with an oil sump, dip stick and drain plug.

 

…………….Unfortunately part of one of the lower piston rings and land has broken off one piston. Probably caused by the fact that the lower ring land comes out of the cylinder bore at the bottom of the Pistons stroke.

Edited By Lathejack on 28/09/2018 22:33:07

[LathejackParticipant @lathejack]

Thanks very much MichaelG, that's the one.

I did Google 'Stuart compressor pump' a couple of days ago but didn't get any images of it, so I thought I must be mistaken. I also imagined that the pump I thought Stuart might have once offered was smaller, but not so.

Thanks for the links.

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