|Object ID #||2008.004.060|
|Object Name||Pulley, Crown|
|Lexicon category||5: T&E For Science & Technology|
|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|
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.