Nicholas Appert invented the canning process. Appert was born in France in 1749. He became a chef in Paris in 1784 ad the age of 35. He canned all sorts of foods using champagne bottles in 1795, thanks to Napolean, who offered a price of 12,000 franks for anyone who could come up with a new way to can food to feed his army. Canning became important for American families in the 1830s. John Mason invented the Mason Jar in 1858. Primarily used for home canning, His patent expired in 1874.
Bread was a popular eraser through the 1700s. Graphite pencils became popular through the 1800s. This created the need for pencil erasers. Two men discovered rubber erasers in 1770. Edward Narine was a prolific English inventor. He accidentally discovered that rubber is a good eraser. Hymen Lipmann combined pencil and eraser in 1858. Lipmann sold his patent for $100,000 in 1851. Important to College too. "I Pencil" is a book written by Leonard Reed in 1958. It shows that no one knows how to make a pencil.