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"A pressure-blower used to send a blast through screens upon which grain is falling to clean it from the chaff and dust; a winnowing-machine. It usually forms a part of a threshing-machine, or is used in connection with grain-elevators." -Whitney, 1911

Fanning Mill

"A pressure-blower used to send a blast through screens upon which grain is falling to clean it from…

A winnowing machine was traditionally used to separate yield from chaff. The pictured type of winnowing machine was likely used to separate chaff from tea leaves.

Winnowing Machine

A winnowing machine was traditionally used to separate yield from chaff. The pictured type of winnowing…