The Scientific American Boy; Or, The Camp at Willow Clump Island
Chapter 23
THE WINDMILL 273
Digging the Well. The Windmill Tower. The Crank Shaft. The Wind Wheel. A Simple Brake. The Pump. Pump Valves. Action of the Pump.
The Scientific American Boy; Or, The Camp at Willow Clump Island
THE WINDMILL 273
Digging the Well. The Windmill Tower. The Crank Shaft. The Wind Wheel. A Simple Brake. The Pump. Pump Valves. Action of the Pump.