Text: Karl Schaeffer and his two sons Kurt and Karl, through their company Sonaqua, Inc., has developed in the early 1970s a steam machine that features a 20 horsepower electric motor which drives a rotary assembly which shocks water into steam instantly - no boiler, no flame, no fossil fuels and no pilot light. The device uses water hammer and cavitation. Company located at Belmont Avenue, Chicago. Machine tested over 100% efficeincy by Batelle in 1973. from Newsreal Series, page 11, circa 1973.

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