In 1851, a U.S. patent was issued to Linus Yale, Jr. for his invention of his "Self-Detaching and Attaching Key-Lock" (No. 8,071) as "a new and Improved Safety-Lock for Banks, Safes, Vaults, Stores
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In 1851, a U.S. patent was issued to John Gorrie for his invention of an “Improved Process for the Artificial Production of Ice” (No. 8080).
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In 1891, U.S. President Benjamin Harrison (in office 1889-1893) had the first electric lights installed in the White House. Irwin Hoover arrived from the Edison Company to do the work.
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