Collins, A. Frederick (Archie Frederick), 1869- · Boston, Small, Maynard and company · leaf 18
metal ball ana he fitted two short bent pipes intoholes on the opposite sides of it. Next hemounted the ball on a pair of hollow pipes, ortrunnions as they are called, so that it would re-volve easily and the lower ends of these pipes The First Engines 3 were fixed to a boiler, all of which is… … Fig. 1. Heros Reaction Engine or Eolipile it acted much the same as a rubber ball does whenit strikes a sidewalk, that is it reacted on the hol-low ball forcing it to turn in the opposite di-rection and at a fairly high speed, like unto thewinds let loose by the god Eolus. This is thereason an…
Steam-engines
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![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-189-72.webp)