Site.HerosEngine History

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25 January 2012 by Jim Falk -
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Graphic representation of Hero’s Engine ~200–100 BCE 
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Graphic representation of Hero’s Engine ~200–0 BCE 
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25 January 2012 by Jim Falk -
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Clinton, (F. H. vol. iii. pp. 535, 538,) who puts Hero as low down as the end of the second century B.C., proceeds on the following evidence : Athenaeus (vol. iv. p. 174, edit. Schweighaeuser) quotes one Aristocles as saying, in a work {GREEK}, of the water-organ, {GREEK}. Now Euergetes II (Ptolemy VII.) reigned from B.C. 170 to B.C. 117, and hence Clinton assigns Hero, the pupil of Ctesibius, to the reign of Ptolemy VIII. that is, to B. C. 117–81.1
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Clinton, (F. H. vol. iii. pp. 535, 538,) who puts Hero as low down as the end of the second century B.C., proceeds on the following evidence : Athenaeus (vol. iv. p. 174, edit. Schweighaeuser) quotes one Aristocles as saying, in a work {GREEK}, of the water-organ, {GREEK}. Now Euergetes II (Ptolemy VII.) reigned from B.C. 170 to B.C. 117, and hence Clinton assigns Hero, the pupil of Ctesibius, to the reign of Ptolemy VIII. that is, to B. C. 117–81… [this set of dates] assigned by Clinton has been generally adopted2 For more on this consult the source at http://www.history.rochester.edu/steam/hero/translators.html.
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25 January 2012 by Jim Falk -
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discussion on date3

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As to the dating of this the Translator of Hero’s work makes the following observation:

Clinton, (F. H. vol. iii. pp. 535, 538,) who puts Hero as low down as the end of the second century B.C., proceeds on the following evidence : Athenaeus (vol. iv. p. 174, edit. Schweighaeuser) quotes one Aristocles as saying, in a work {GREEK}, of the water-organ, {GREEK}. Now Euergetes II (Ptolemy VII.) reigned from B.C. 170 to B.C. 117, and hence Clinton assigns Hero, the pupil of Ctesibius, to the reign of Ptolemy VIII. that is, to B. C. 117–81.4
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25 January 2012 by Jim Falk -
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The Steam-Engine described by Hero ~200–100 BCE

http://meta-studies.net/pmwiki/uploads/Evmath/HeroEnginejpg.jpg“A fire is lighted under a cauldron, A B, (fig. 50), containing water, and covered at the mouth by the lid C D; with this the bent tube E F G communicates, the extremity of the tube being fitted into a hollow ball, H K. Opposite to the extremity G place a pivot, L M, resting on the lid C D; and let the ball contain two bent pipes, communicating with it at the opposite extremities of a diameter, and bent in opposite directions, the bends being at right angles and across the lines F G, L M. As the cauldron gets hot it will be found that the steam, entering the ball through E F G, passes out through the bent tubes towards the lid, and causes the ball to revolve, as in the case of the dancing figures.”5
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The Steam-Engine described by Hero of Alexandria

http://meta-studies.net/pmwiki/uploads/Evmath/HeroEnginejpg.jpg“A fire is lighted under a cauldron, A B, (fig. 50), containing water, and covered at the mouth by the lid C D; with this the bent tube E F G communicates, the extremity of the tube being fitted into a hollow ball, H K. Opposite to the extremity G place a pivot, L M, resting on the lid C D; and let the ball contain two bent pipes, communicating with it at the opposite extremities of a diameter, and bent in opposite directions, the bends being at right angles and across the lines F G, L M. As the cauldron gets hot it will be found that the steam, entering the ball through E F G, passes out through the bent tubes towards the lid, and causes the ball to revolve, as in the case of the dancing figures.”
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discussion on date6

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25 January 2012 by Jim Falk -
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The Steam-Engine of Hero, ~200–100 BCE

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The Steam-Engine described by Hero ~200–100 BCE

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25 January 2012 by Jim Falk -
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The Steam-Engine of Hero, ~200–100 BCE

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25 January 2012 by Jim Falk -
Added lines 1-4:
http://meta-studies.net/pmwiki/uploads/Evmath/HeroEnginejpg.jpg“A fire is lighted under a cauldron, A B, (fig. 50), containing water, and covered at the mouth by the lid C D; with this the bent tube E F G communicates, the extremity of the tube being fitted into a hollow ball, H K. Opposite to the extremity G place a pivot, L M, resting on the lid C D; and let the ball contain two bent pipes, communicating with it at the opposite extremities of a diameter, and bent in opposite directions, the bends being at right angles and across the lines F G, L M. As the cauldron gets hot it will be found that the steam, entering the ball through E F G, passes out through the bent tubes towards the lid, and causes the ball to revolve, as in the case of the dancing figures.”7
Graphic representation of Hero’s Engine ~200–100 BCE 
 

1 The Pneumatics of Hero of Alexandria, Translated for and Edited by Bennet Woodcraft, Taylor Walton and Maberly, London, 1851, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

2 The Pneumatics of Hero of Alexandria, Translated for and Edited by Bennet Woodcraft, Taylor Walton and Maberly, London, 1851, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

3 The Pneumatics of Hero of Alexandria, Translated for and Edited by Bennet Woodcraft, Taylor Walton and Maberly, London, 1851, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

4 The Pneumatics of Hero of Alexandria, Translated for and Edited by Bennet Woodcraft, Taylor Walton and Maberly, London, 1851, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

5 ibid, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

6 The Pneumatics of Hero of Alexandria, Translated for and Edited by Bennet Woodcraft, Taylor Walton and Maberly, London, 1851, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

7 ibid, Translator’s Preface, http://www.history.rochester.edu/steam/hero/translators.html (viewed 25 Jan 2012) (↑)

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Page last modified on 25 January 2012