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<p>[QUOTE=&quot;philologus_1, post: 6644691, member: 92212&quot;]Indeed! I have some information about this in my coin document associated with my 80-drachmai Augustus AE issue from Alexandria (Emmet 1; Köln 1; RPC I 5001) because that coin is more contemporary with the inventor. Although the type is comparatively light to &quot;biggy-sized&quot; Ptolemaic issues, its weight of almost 16 grams would still have been sufficient to provide the needed catalyst.&nbsp; See the image below along with the text in blue which came from this now inactive webpage: <a href="http://www.mlahanas.de/Greeks/HeronAlexandria2.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.mlahanas.de/Greeks/HeronAlexandria2.htm" rel="nofollow">http://www.mlahanas.de/Greeks/HeronAlexandria2.htm</a></p><p>[ATTACH=full]1268251[/ATTACH]</p><p><span style="color: #0000ff">A coin was to be inserted in <u><b>A</b></u> and land on the receiver <u><b>R</b></u> causing it to fall. This action would raise the other side of the lever <u><b>P</b></u> to rise opening the valve and allowing water to flow out of the spout <u><b>M</b></u>. The coin would slide off of the receiver and the valve would close.</span></p><p><br /></p><p>And better yet, for a modern-day model, see here:</p><p><a href="https://www.smith.edu/hsc/museum/ancient_inventions/hsc18b.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.smith.edu/hsc/museum/ancient_inventions/hsc18b.htm" rel="nofollow">https://www.smith.edu/hsc/museum/ancient_inventions/hsc18b.htm</a>[/QUOTE]</p><p><br /></p>

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