Assertion: watt | /r/CapableOf | introduce system
Facets:
value: for taking off rotary power
type: PURPOSE
value: in 1781
type: TEMPORAL
Source sentences:
text: Watt continued working to improve the engine, and in 1781 introduced a system using a sun and planet gear to turn the linear motion of the engines into rotary motion.
text: Watt never ceased developing the steam engine, introducing double-acting designs (with two cylinders) and various systems for taking off rotary power.