Harvey Hubbell II (1858-1927) was an American inventor best-known for inventing the U.S. electrical plug which was patented in 1904. He also invented the pull-chain light socket. Other attributions include his status as an entrepreneur and industrialist.

In 1888 when he was 31 years old, Hubbell quit his managerial job and founded a company that is still operational in 2019. The company was incorporated in 1905 and today is known as Hubbell Incorporated, located near Bridgeport, Connecticut.

Hubbell received at least 45 patents, most of which were for electrical products. Out of necessity, he invented manufacturing consumer products for his factory. He quickly began selling his newly devised manufacturing equipment alongside his commercial products.

Other products he designed included automatic tapping machines (to create screw threads, called threading) and progressive dies (to cut and shape material mostly using a press) for stamping (a machine tool that changes the shape of an item by the application of pressure).

Originally born in Brooklyn, Kings County, New York, at the age of 70, he died in the same city of his life work, Bridgeport.

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