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November 20, 2012

Patent model dust collector

Filed under: Item of the Day — Lizzie Ehrenhalt @ 9:30 am

Patent model dust collector

Mahogany and tinned-iron patent model of a flour mill dust collector patented in 1879.  Air to be cleaned arrives from the middlings-purifying station of a mill, entering at the bottom of the device and exiting the top.  Dust collects on cloth filters as the air is forced through. A brass cam-shaft, driven by a maple belt-wheel, agitates the filters causing accumulated dust to fall to the bottom of the apparatus, where it is moved out by an auger-type conveyor.

The introduction of dust-collecting methods to flour factories greatly increased the safety of the milling process, preventing dust-ignited explosions like the one that destroyed Minneapolis’ Washburn A Mill in 1878.

For details, view the dust collector in our online collections database.

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