F06c. Davies Spherical Engine, inversion, close-up
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This is a model of a spherical steam engine invented by Davies in 1826. The outer part of the model consists of glass sections of a spherical surface. Inside there is a disc rotating on a cone and a transverse plate dividing inside volume into four chambers. In this movie the spherical surface, the cone, and the transverse plate are fixed and the disc is rotating. Movie F06b is a full view of this motion.

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