Joy Steam Engine Valve Gear Rotating Wheel
A Joy valve gear for steam engine rotating the wheel in the direction of the arrow. The lever F changes the direction the wheel would turn when turned to point B.
Keywordssteam engine, engine, engines, steam engine valve, Steam Engine Shaft, Steam Engine Valves, Valve Gear, Joy Steam Engine Valve Gear Rotating Wheel
Derr, Louis Cyclopedia of Engineering (Chicago, IL: American Technical Society, 1911)