Model of a Wind-Driven Pump, anonymous, 1827 Canvas Print
Model of a pump powered by mill blades, in two-storey frames, almost identical to NG-MC-648-2. The lower floor is a container in which the pump tube is located, which has a drain pipe at the top floor. The pump buckets are simple metal valves, as well as the pump pistons connected to a stool with a pump rod; in one model, the top of the pump tube is closed with a wooden plug, which ensures the vertical movement of the pump rod. The crankshaft is driven by a four mill blades; crankshaft and blades are mounted with a metal ring on a wooden cylinder, so that the whole can be turned in the wind direction.
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