This 1870s illustration shows the governor and throttle-valve that was part of James Watt's steam engine. A Scottish inventor and mechanical engineer, James Watt (1736-1819) was said to have discovered the power of steam when he placed his hand in front of kettle that held a very hot liquid. Watt’s improvements to the steam engine were key to the changes that came with the Industrial Revolution. The governor islabeled D here. The throttle valve is the piece at bottom right.

---

Size: 4889px × 3686px
Photo credit: © Ivy Close Images / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1700s, 1800s, 18th, 19th, century, engine, engineer, govenror, governor, industrial, invention, inventor, james, mechanical, power, revolution, scottish, steam, throttle, trains, valeve, valve, watt