Classic cars forum & vehicle restoration.

roverdriver · Posted: Sat Aug 15, 2009 11:18 pm Post subject: Humphrey Pump

One of the more unusual applications of the Otto Four Stroke Cycle. This engine/pump has no piston, and the only moving parts are the inlet and exhaust valves.

http://www.postcards.sa.com.au/features2008/humphrey_pump.html

For a detailed explanation go here-
http://www.angelfire.com/ak5/energy21/humphreypump.htm
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Dane- roverdriver but not a Viking.

peter scott · Joined: 18 Dec 2007 Posts: 7211 Location: Edinburgh

What a fascinating thing! I'd never come across one before. Just think what you could do with a Humphrey followed by one of these..

http://en.wikipedia.org/wiki/Hydraulic_ram

Thanks for posting.

Peter Very Happy

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https://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon

roverdriver · Posted: Sun Aug 16, 2009 10:41 am Post subject:

Thanks Peter. That type of Hydraulic Ram was quite popular in Australia wherever there was a flowing stream. Although fairly expensive to buy, their running cost were nil, and maintenance minimal.

One had to be careful on a sheep property, Hydraulic Ewes were harder to locate!
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Dane- roverdriver but not a Viking.

peter scott · Joined: 18 Dec 2007 Posts: 7211 Location: Edinburgh

Yup, with that climate in Aus I'm sure you can grow almost anything if you just add a little water.

Peter Wink

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https://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon