Collins, A. Frederick (Archie Frederick), 1869- · Boston, Small, Maynard and company · leaf 24
boy of genius, andgenius and humdrum work are seldom on speak-ing terms. So he bethought him to rig up somelevers worked by strings tied to the walkingbeam to open and close the valves and his inven- The First Engines 9 tion worked like a charm. He was in a fair way,at least it seemed so to him, to… … Fig. 5. Potters Self-Acting Engine Humphreys invention was at once improvedupon by one Henry Beighton who connected arod to the walking beam to work the valves andit is quite likely that, being a man, he profitedby it. Watt Puts on the Flywheel.—In your young io The Boys9 Book of Engine-Building…
Steam-engines
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