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John Henry Holmes (1857 – 1935) was an English electrical engineer, inventor, Quaker and pioneer of electric lighting who invented the quick break light switch, the technology behind which remains the basis for modern wall mounted light switches. [1]
Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]
Phillip Bell Downig (March 22, 1857- June 8 1934) was an African-American inventor from Providence, Rhode Island. He is known for his most significant invention, the operating street railway switch. This allowed the switches to be opened or closed by using a brass arm located next to the brake handle on the platform of the car.
Russian engineer Pavel Yablochkov invented the electric carbon arc lamp. 1876: Scottish inventor Alexander Graham Bell patented the telephone. 1877: American inventor Thomas Edison invented the phonograph. 1877: German industrialist Werner von Siemens developed a primitive loudspeaker. 1878: First electric street lighting in Paris, France 1878
A switch normally maintains its set position once operated. A biased switch contains a mechanism that springs it into another position when released by an operator. The momentary push-button switch is a type of biased switch. The most common type is a "push-to-make" (or normally-open or NO) switch, which makes contact when the button is pressed ...
Handguns and rifles illegally modified with devices called “Glock switches” to become machine guns have proliferated, officials say. The devices are tiny, cheap and easy to install.
Thomas E. Murray (October 21, 1860 – July 21, 1929) was an American inventor and businessman who developed electric power plants for New York City as well as many electrical devices which influenced life around the world, including the dimmer switch and screw-in fuse. It has been said that he "invented everything from the power plant up to ...