When was the dry-sump lubrication system invented?

I'm writing an essay about the dry-sump oiling system, but I cannot find a single article about its history.

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  • 1 month ago
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    As far as I can tell, the first reference is a patent dated 1934 in relation to "Indian" brand motor cycles in the USA.

    It is referenced in this patent article:

    https://patents.google.com/patent/US1966837A/en

    • Teodor1 month agoReport

      Thank you kindly.

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  • Anonymous
    1 month ago

    A dry-sump system is a method to manage the lubricating motor oil in four-stroke and large two-stroke piston driven internal combustion engines. ... In the wet-sump system of most production automobile engines, a pump collects this oil from the sump and directly circulates it back through the engine.

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  • Anonymous
    1 month ago

    If there's lubrication then it's not a dry-hump. 

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