parts of the engines and the consequences of patent infringements, examples exist of Beam Engines with no makers name on any of the parts ().

Rotative beam engines

In a rotative beam engine, the piston is mounted vertically, and the piston rod drives the beam as before. A connecting rod from the other end of the beam, rather than driving a pump rod, now drives a flywheel.

Early Watt engines used Watt's patent sun and planet gear,

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