In addition to being a father of three, a successful printer and publisher, and a political activist, Benjamin
Franklin was also the father of several inventions, three of which are outlined here.
Franklin invented the bifocals in 1784 after suffering from presbyopia. This is an eye condition many
people develop with age in which a person is no longer able to see things, such as print, up close. Since
he was tired of switching back and forth between two pairs of glasses, he developed one pair which had
two half-lenses put together. The top half was for distance viewing and the bottom was for viewing items up
In 1752, Franklin invented and tested the lightning rod to reduce house fires. It was simply a metal rod attached to the side of a house and going down into the ground. When lightning struck, it hit the rod instead of the house sending the electrical charge down into the ground. Therefore, the house was spared from bursting into flames.
The franklin stove saw its beginnings in 1742. This was a cast iron stove which featured a hood enclosure in the front and an airbox in the back. This design allowed for a more efficient fire which used less wood to produce more heat.