Assertion: watt | /r/CapableOf | add the sun-and-planetgear
Facets:
value: to it
type: OTHER
Source sentences:
text: Watt spent the next several years improving his design, adding to it the “sun-and-planet” gear (1781), the double-acting engine (1782), the parallel motion (1784), a flywheel (1788), and a pressure gauge (1790).