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  • All fields: Prony Brake Dynamometers
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    • Larsen Tractor Museum, Records

    • Winnipeg Tractor Trials - 1912; Prony Brake Dynamometers; Belt Testing. Dynamometer
    • "Winnipeg plowing Contests 1910-1912. Prony Brake Dynamometers." Two dynamometers in the foreground. Belts run from there to two tractors in the background. The tractor on the right is a Tractor carrying the name "RELIANCE" At this time we do...
    • Nebraska Tractor Test Laboratory, Records

    • Tractors; Prony Brake Dynamometers; Winnipeg Trials
    • View of two unidentified tractors side by side being tested for Belt Power during the Winnipeg, Manitoba trials of the early 20-th Century (1907-1913). Those were the first organized tractor evaluations on the American continent. Prony Brakes were...

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