generate questions: The first commercially successful true engine, in that it could generate power and transmit it to a machine, was the atmospheric engine, invented by Thomas Newcomen around 1712. It was an improvement over Savery's steam pump, using a piston as proposed by Papin. Newcomen's engine was relatively inefficient, and in most cases was used for pumping water. It worked by creating a partial vacuum by condensing steam under a piston within a cylinder. It was employed for draining mine workings at depths hitherto impossible, and also for providing a reusable water supply for driving waterwheels at factories sited away from a suitable "head". Water that had passed over the wheel was pumped back up into a storage reservoir above the wheel.
What was the first true engine that was commercially successful? {sep_token} Who was the inventor of the atmospheric engine? {sep_token} About what year was the atmospheric engine invented? {sep_token} What was invented by Savery? {sep_token} Who conceptualized the piston? {sep_token}