And for a comparison of timeframes, Stephenson's Rocket was 1829. Early steam engines for work (not train) The Newcomen Engine in the 1700s (though fairly inef

And for a comparison of timeframes, Stephenson's Rocket was 1829. Early steam engines for work (not train) The Newcomen Engine in the 1700s (though fairly inefficient - and you can see that it could be made without precision parts). By 1800 (when Watt's patent expired) there was an estimated 450 Watt engines (totaling 7,500 hp) and over 1500 Newcomen engines in the UK. The first high pressure steam engine was built by Oliver Evans in 1801 https://en.wikipedia.org/wiki/Oliver_Evans#Developing_the_high-pressure_steam_engine,_1801–06 https://en.wikipedia.org/wiki/Oliver_Evans#Developing_the_hi... By the 1830s, you had this - https://youtu.be/zoBWAE0win0 https://youtu.be/zoBWAE0win0