The second in a 2 part series on the steam engine valves patented by George Corliss. Virtually all of the intellectual property developments beyond James Watt centered around the valve mechanism. Corliss's design was both a dramatic break from existing practice and a huge leap forward in efficiency. This technology was licensed by Corliss to hundreds of manufacturers around the world and adopted almost universally after his patents expired. More than just the technology, the name of Corliss became so well known and sought after that is was hyphenated into the names of companies around the world.
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