Schmid Water engine

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Bruce Comfort on March 18, 2012

This line drawing shows the working components of a Schmid reciprocating self-valved water motor. These motors were of Swiss design and few complete motors survive as the moving parts were all made from machined cast gunmetal and this material was in such great demand for munitions during the First World War that all such sources were "mined" and exploited. Patriotic churches on both sides of the conflict would have donated church bells for use by their respective British or German arsenals, although it has been said that in the British Commonwealth countries the Lutheran Churches had their bells confiscated!

What is not shown in the drawing is the trunion and the mechanism which held the oscillating cylinder down onto the semicircular shoe - a system of levers and adjustable screws which maintained enough pressure to keep the device moderately water tight whilst still allowing it to "rock" without absorbing too much energy. The machines did leak and all working engines will be mounted on a base which can collect the run-off and direct it to drain.

Here is an You Tube video of a similar water engine working

http://www.youtube.com/watch?v=lyPTUKqkX9g

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  • Uploaded on August 5, 2011
  • Attribution-Noncommercial-No Derivative Works
    by Bruce Comfort

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