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Author Topic: Duplex hot air engine  (Read 75 times)

marv in minn

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Duplex hot air engine
« on: April 06, 2023, 04:06:49 pm »
this is 1/2 size of my Duplex Vacuum engine.
it is all cast iron castings,

I'm wondering who made these?
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marv in minn

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Re: Duplex hot air engine
« Reply #1 on: April 06, 2023, 04:08:50 pm »
the door on the full size engine
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St Paul Steam

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Re: Duplex hot air engine
« Reply #2 on: April 06, 2023, 04:38:23 pm »
Very nice Marv.
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Bruce, St. Paul Indiana, USA
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Stoker

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Re: Duplex hot air engine
« Reply #3 on: April 06, 2023, 08:27:57 pm »
What a perfectly complimentary pair .... Congratulations on having those two beauties!!!

It's just a guess, but I'd suspect that they may have been made by the Duplex Vacuum Motor Co.
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