Questions tagged [inventions]

Questions related to the history of the design and creation of new or unique devices or methods or processes or compositions.

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When was the top spring on umbrellas invented?

Modern umbrellas have a rider (a hollow cylinder) that slides up the shaft to force the umbrella vanes open. It is held in place by a spring latch that protrudes close to the top of the shaft - I've ...
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How much of a symbiotic relationship was there between the Renaissance and the Printing Press?

Both the Renaissance and the Printing Press are dated to be around the 14th century. While the first Printing Press was in 1436 (Johannes Gutenberg), the Renaissance is also supposed to start around a ...
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Was there a race to patent the use of Freon as a home refrigerator coolant?

Thomas Midgely, Jr.'s hands were in two of the most detrimental scientific breakthroughs of the 20th century: the proliferation of leaded gasoline and the use of Freon (a chlorofluorocarbon) as a ...