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August 11, 1896
- On August 11, 1896, Bridgeport inventor and industrialist Harvey Hubbell patented a socket for incandescent lamps. It utilized a simple on/off switch contained in the base of the light socket and controlled by a pull chain—a design that remains popular to this day.
connecticuthistory.org › hubbells-pull-chain-electrical-light-socket-today-in-history-august-11
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These sockets included switches, but required bulbs to be mounted upright. The Edison organization developed a screw-base in 1880 which was initially made of wood but later made of plaster of Paris. Many competitive designs of lamps and sockets appeared in the early era of incandescent lighting, which often were incompatible with other designs.
SOCKET TUTORIAL. The years between 1895 to 1910 witnessed a rapid growth in the use of electric light and with it significant improvements in the design of light sockets. An understanding of what these changes were and when they occurred provides a valuable tool for dating early electric lamps.
1. Screw attachment plug, developed in the mid 1880s by Edison. It fits in an Edison 26 mm base (outside diameter of thread) which became the most common lamp socket in the US. Until the end of the 19th century the screw plug was mainly an industry standard. In the early 20st century they were commonly used in homes.
Several early American electrical plug and socket arrangements were invented by Harvey Hubbell. On 26 February 1903 he filed two patent applications featuring 2-pin plugs and adaptors for using his plugs with existing designs of lamp sockets and wall receptacles.
Edison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, [1] and was licensed in 1909 under General Electric's Mazda trademark.
Nov 22, 2013 · From incandescent bulbs to fluorescents to LEDs, we're exploring the long history of the light bulb.
In fact, the principle of electric incandescent lighting (making a wire glow by sending electricity through) had been around since at least 1802, when Englishman Humphry Davy demonstrated it. In 1840 another English inventor, Warren De la Rue, used a platinum filament inside a glass bulb, an idea Edison would later try but reject.
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