The Boys' Book of Engine-Building —— How to Make Steam, Hot Air and Gas Engines and How They Work, Told in Simple Language and by Clear Pictures

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ISBN: 9781333192365 出版年：2016 页码：271 Archie Frederick Collins Forgotten Books

This boy was Bion J. Arnold, now our fore most American engineer. He was only thirteen years old when he built his first engine — and it worked, too. It was a little horizontal steam affair about seven inches long, and he went about building it in the right way — that is he made patterns for the chief parts, cast them in lead and put them together with the tools of a kindly disposed gunsmith.