The change of the “atmospheric engine” of Newcomen into the modern steam-engine was now completed in its essential details.
As we have seen, it was an atmospheric engine, in no sense a steam engine.
The essential features of the atmospheric engine were not new.
The cylinder was let down into the top of the boiler, and like Newcomen's atmospheric engine had no cylinder cover.
This is the extent as far as I know of Savory's claim to be the inventor of the atmospheric engine.
This Piston T S, acts only one way, like that of an atmospheric engine, a thing now quite out of date!
On the other hand, the atmospheric engine was limited in its power only by the dimensions of its piston.