1849The safety pin was invented to pay off a debt.

Wacky WorldInventions

Walter Hunt patented it in 1849 and reportedly sold the rights for $400 to settle a debt.

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<span class="aj-year">1826</span>The first photograph needed an exposure of hours — possibly days.Pencils were not always made with lead.<span class="aj-year">1913</span>Crossword puzzles are just over 100 years old.