The invention of the steam engine
The steam engine
A long time ago, the only way people could travel was by foot or horse. This made traveling difficult. However, after the invention of the steam engine, people could travel much faster.
The steam engine is a type of machine that uses steam to generate power. James Watt was a Scottish inventor (born in Greenock) who improved older models of the steam engine, making them easier for people to use. Let’s discover more about what James did.
Expensive
Have you ever watched your mom or dad cook pasta? A pot of water is placed on the stove and heated until the water begins to boil. As the water boils, steam is released. Steam is water in the form of a gas.
This is similar to what a steam engine does. Coal is burned to heat water, turning it into steam. But instead of letting the steam disappear into the air, it is captured and used to power a machine. Train locomotives, ships and factory machinery were made with steam engines during the 1800s.
Unfortunately, the first steam engines, invented by Thomas Savery and Thomas Newcomen, needed to burn a lot of coal to run, which made them expensive. James Watt came up with a better way to capture steam.
New and Improved
So how did James Watt improve the steam engine? It all began in 1764 when James was given a Newcomen steam engine to repair. James thought the engine wasted a terrible amount of heat. The biggest problem was that only one tank, was used. This tank had to be heated as steam came into it, and then cooled. James came up with the idea of having two separate chambers. One chamber would always be hot so it could receive steam. The second chamber would remain cool so that the steam traveling from the first tank could be converted back into water. James Watts new model of steam engine could continue working day and night and prevented a lot of steam from being wasted.
Vocabulary help (only click if you really need it!)
| steam | Dampf |
| engine | Motor |
| to generate | Erzeugen |
| inventor | Erfinder |
| to boil | Kochen |
| to capture | Einfangen / festhalten |
| to waste | verschwenden |
James Watt
James Watts steam engine














