Unusual Steam Engines.>
The engines shown on this page are inevitably a rather mixed collection; about the one thing they have in common is that they have more or less conventional pistons, unlike the vanes and rotors of the Rotary Steam Engines.
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THE BROTHERHOOD RADIAL ENGINE
The Brotherhood engine was a popular and successful three-cylinder radial design that was adapted for various operating fluids. A large number were used as water engines, for driving hydraulic capstans in docks and so on, but they were also widely used as steam engines. One version for steam use is shown here, but there were probably other versions of the design.
It is notable that the steam version shows considerable design differences from the water-driven version.
Left: The Brotherhood Radial Engine: axial section.
Left: The Brotherhood Radial Engine: longitudinal section.
Left: The Brotherhood Radial Engine: account of a test.