Offering themselves by chance: Newcomen's starting materials

At some point between 1684 and 1698 a Dartmouth tradesman started to perform experiments with the power of steam in his workshop. In the course of this investigation Thomas Newcomen discovered how to cause a partial vacuum by rapid condensation under a piston and incorporated this prime mover within an engine that was consistently reliable and proved commercially viable for draining mines.Consensus is that his initial apparatus was partly derived from an air pump, however historians have debated how this isolated ironmonger could have garnered sufficient theoretical understanding to pursue such a line of enquiry, let alone the know-how to make suitable devices and mechanisms. Just how remote was Newcomen from London 'science'?This paper examines his relational connections, identifying potential links with Denis Papin, Robert Hooke and an authority on mine pumps, Christopher Kirkby. The case of Newcomen illustrates the proliferation of modern ideas and values through relational networks, and, most importantly, the know-how to innovate.