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Object Record

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Object ID # 2008.004.060
Object Name Pulley, Crown
Lexicon category 5: T&E For Science & Technology
Made Unknown
Place of Origin Unknown
Description Very large wooden pulley.
Provenance Unknown. Large pulley such as this one were sometimes used in mills; however, the function of this item remains unknown. It was found in Southern Ontario. It was last owned by Orme and Dorene Kilburn of Stratford, Ontario, who collected vintage farm items.
Collection Agricultural Tools & Equipment Collection
Material Metal/Wood
Found Ontario
Function Before V-belts were invented, machinery was usually powered through flat canvas belts running on crowned pulleys. These flat belts stayed centered on pulleys without any guides or flanges. The key to keeping them tracking centered on the pulleys is the use of "crowned pulleys". A crowned pulley is a pulley that has a slight hump in the middle, tapering off ever so slightly towards either edge.
https://woodgears.ca/bandsaw/crowned_pulleys.html