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The lubricating cup for steam engines was invented by Elijah McCoy, an African American inventor and engineer. Born in 1844 in what is now Canada, he developed this device to improve the efficiency of steam engines by allowing them to be lubricated automatically while in operation. His invention became crucial for the railroad industry, and the phrase "the real McCoy" is believed to stem from his innovative work, signifying authenticity and quality.

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1mo ago

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