Info

009597

Ventilating a mine. Hollow drum with air holes, B, at opposite sides, mounted on an axle, C, to which are fixed fans rotating inside the drum. Axle turned by water wheel through a spur gear and lantern. When axle turned, the fans rotating inside the drum would suck air in one hole and out of the opposite one, setting up a current of air. From 'De re metallica', by Agricola, pseudonym of Georg Bauer (Basle, 1556). Woodcut.

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Filename
009597.jpg
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Irish Photo Archive
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2325x2430 / 883.6KB
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Ventilating a mine.  Hollow drum with air holes, B, at opposite sides, mounted on an axle, C, to which are fixed fans rotating inside the drum. Axle turned by water wheel through a spur gear and lantern. When axle turned, the fans rotating inside the drum would suck air in one hole and out of the opposite one, setting up a current of air.   From 'De re metallica', by Agricola, pseudonym of Georg Bauer (Basle, 1556).  Woodcut.