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Harvey Hubbell II (born 1857, Connecticut) was an American inventor, entrepreneur, and industrialist. His best-known inventions are the U.S. electrical plug [ 1 ] and the pull-chain light socket . [ 2 ]
Hubbell Incorporated was founded as a proprietorship in 1888 by Harvey Hubbell II. Born in Connecticut in 1857, he was a U.S. inventor, entrepreneur, and industrialist. Hubbell's best-known inventions are the U.S. electrical plug [3] and the pull-chain light socket. [4]
An early American electrical plug and socket was invented by Harvey Hubbell and patented in 1904. Hubbell's first design was a socket which screwed into a lampholder (like the early lampholder plugs), but with a separable plug with pins (U.S. patent 774,250) or blades (US patent 774251).
Harvey Hubbell, inventor of the electric plug and the pull-chain light socket; Louis Latimer, inventor; Charles F. Ritchel, inventor; Gustave Whitehead, inventor; William Higinbotham, worked on the nuclear bomb, created one of the first video games Tennis For Two.
In 1903, Harvey Hubbell filled the U.S. patent 774,250, for a lightbulb socket adaptor and plug, also a standalone receptacle.The adaptor was screwed into the lightbulb socket, leaving a flat face with two holes to conveniently attach the plug.
Harvey Hubbell patented a parallel blade plug in 1913, where the blades were equal width (U.S. patent 1,064,833). In 1916 Hubbell received a patent for a polarised version where one blade was both longer and wider than the other ( U.S. patent 1,180,648 ), in the polarised version of NEMA 1-15, introduced in the 1950s, both blades are the same ...
1896 – The chain socket was invented in Bridgeport; 1904 – The AC plug outlet was also invented in Bridgeport by Harvey Hubbell; 1877 – The world's first telephone exchange was established in Bridgeport by the District Telephone Company. [126] The first commercial phone exchange was opened in nearby New Haven two years later. [10]
It was invented by Harvey Hubbell, who was granted its patent in 1896. [2] Mechanics. The most common use of a pull switch is to operate a ceiling electric light.