smokejack
device
Quick Summary
A smokejack is a device used to turn a cooking spit. It operates by utilizing the rising gases within a chimney to move a fly or wheel, which in turn rotates the spit. This mechanism was first known to be in use in 1675.1
A related device, also called a smoke eater, is used in conjunction with a smokejack in an enginehouse. Its purpose is to draw smoke from a locomotive into a tank or pit, separating solid particles from the gas.2
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