History and Story Behind Inventions: Pencil with Eraser
About the story behind the invention of the pencil with eraser, history and biography of inventor Hyman L. Lipman.
INVENTION: Pencil with Eraser
INVENTOR: Hyman L. Lipman, U.S.
HOW INVENTED: Until the advent of Lipman, people used separate erasers when writing, drawing, figuring. This Philadelphian conceived the simple idea of combining pencil and eraser in one. His invention offered a pencil with a groove on top into which "a piece of prepared rubber" was glued.
He sold his patent for $100,000.
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