Murray's Hypocloidal steam engine, the oldest working steam engine with a hypocloidal gear.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...e_fullsize.jpg
More: https://en.wikipedia.org/wiki/Murray...cloidal_Engine
Previously:
Giant steam engine in Portugese shopping mall - video and photo
Statfold Barn steam engine cutaway - photos
Mini steam traction engine can crusher
Spherical steam engine - GIF
Glass model steam engine - video
uniflow steam engine
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