The earliest evidence of piston rings could be found in locomotive steam engines in the 1800s. As technology evolved, the rings turned into cast iron pieces that provided better sealing properties.

Stirling engines are really cool machines, invented by Reverend Dr. Robert Stirling in 1816 to rival the steam engine ... Blade]’s version of a free-piston type Stirling engine is simple ...

We’d love to see the same experiment done with a piston-type steam engine, too. Video after the break.

The steam passages of the slide valve are closed earlier or later, according to the velocity of the piston, by the action of this governor valve, to regulate the speed of the engine. The governor ...

The steam cylinder piston goes down under the pressure of ... The Kew Bridge Steam Museum in London has the largest working Cornish Steam Engine in the World. It was actually built for the site ...

Also for $29.99 is the Exploring Kid Steam Engine Kit. This mostly plastic kit, when assembled, includes a boiler and tube leading to a piston. Due to the open flame and numerous small parts ...

Steam engine makers have been- occupied ... The engine is direct-aijng, "the piston rod jtg connected'to the double crank in the toddle of the shaft, I. The slide valve is worked by an eccentric ...