SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
High-pressure steam engine, 19th century design. Fuel burnt in the furnace (right) produced steam that drove the piston (centre), which transferred energy to the flywheel (left). This flywheel has a centrifugal governor (structure with two balls) to control the speed of the engine. Steam engines like this were widely used in the 19th century. This steam engine was designed by J. F. Waldeck. Blueprint published in Circle of the Sciences (1884).
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