A steam engine that produced continued rotary motion was patented by '

1.	A steam engine that produced continued rotary motion was patented by 'James Watt' in 1781. ...
Answer» JAMES WATT was urged by Boulton to invent some form of rotary motion for his steam engines. The idea was to REPLACE the reciprocating action of the original. In 1781 he did just that. His so-called sun-and-planet gear provided the motion by means of which a shaft produced two REVOLUTIONS for each cycle of the engine.

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