Thomas Newcomen was assisted by John Calley in his steam research, the two inventors are listed on the patent for the Atmospheric Steam Engine.
Thomas Newcomen and John Calley were both uneducated in mechanical engineering and corresponded with scientist Robert Hooke asking him to advise them about their plans to build a steam engine with a steam cylinder containing a piston similar to that of Denis Papin's. Hooke advised against their plan, but, fortunately, the obstinate and uneducated mechanics stuck to their plans.
Thomas Newcomen and John Calley built an engine that while not a total success, they were able to patent in 1708. It was an engine combining a steam cylinder and piston, surface condensation, a separate boiler, and separate pumps. Also named on the patent was Thomas Savery who at that time held the exclusive rights to use surface condensation.
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