Invention of tyres

Charles Goodyear invented vulcanized rubber in 1844 that was later used for the first tires.


In 1888, John Dunlop invented the air-filled or pneumatic tires, however, his were for bicycles.


In 1895, André Michelin was the first person to use pneumatic tires on an automobile, however, not successfully.


In 1911, Philip Strauss invented the first successful tire, which was a combination tire and air filled inner tube. Strauss' company the Hardman Tire & Rubber Company marketed the tires.

• In 1903, P.W. Litchfield of the Goodyear Tire Company patented the first tubeless tire, however, it was never commercially exploited until the 1954 Packard.

In 1904, mountable rims were introduced that allowed drivers to fix their own flats. In 1908, Frank Seiberling invented grooved tires with improved road traction.


In 1910, B.F. Goodrich Company invented longer life tires by adding carbon to the rubber.


Goodrich also invented the first synthetic rubber tires in 1937 made of a patented substance called Chemigum.


Pneumatic Tyre (Tire)


John Boyd Dunlop (1840-1921) was a Scottish veterinarian and the recognized inventor of the first practical pneumatic or inflatable tyre/tire. His patent was for a bicycle tire, granted in 1888. However, Robert William Thomson (1822 - 1873) invented the actual first vulcanised rubber pneumatic tire. Thomson patented his pneumatic tire in 1845, his invention worked well but was to costly to catch on. Dunlop's tire patented in 1888 did, and so he received the most recognition. William Thomson also patented a fountain pen (1849) and a steam traction engine (1867).

Charles Goodyear
John Dunlop

Andre Michelin

Philip Strauss

The History of Vacuum Tubes Also Referred to as Electron Tubes

Vacuum Tube used in audios and TV

A vacuum tube also called a electron tubes is a sealed glass or metal-ceramic enclosure used in electronic circuitry to control the flow of electrons between the metal electrodes sealed inside the tubes. The air inside the tubes is removed by a vacuum. Vacuum tubes are used for: amplification of a weak current, rectification of an alternating current to direct current (AC to DC), generation of oscillating radio-frequency (RF) power for radio and radar, and more.

According to PV Scientific Instruments, "The earliest forms of such tubes appeared in the late 17th century. However, it was not until the 1850s that sufficient technology existed to produce sophisticated versions of such tubes. This technology included efficient vacuum pumps, advanced glassblowing techniques, and the Ruhmkorff induction coil."

Timeline

• In 1875, American, G.R. Carey invented the phototube.
• In 1878, Englishman Sir William Crookes invented the 'Crookes tube', an early prototype of cathode-ray tube.
• In 1895, German, Wilhelm Roengten invented an early prototype Xray tube.
• In 1897, German, Karl Ferdinand Braun invents the cathode ray tube oscilloscope.
• In 1904, John Ambrose Fleming invented the first practical electron tube called the 'Fleming Valve'. Leming invents the vacuum tube diode.
• In 1906, Lee de Forest invented the audion later called the triode, an improvement on the 'Fleming Valve' tube.
• In 1913, William D. Coolidge invented the 'Coolidge Tube', the first practical Xray tube.
• In 1920, RCA began the first commercial electron tube manufacturing.
• In 1921, American Albert Hull invented the magnetron electronic vacuum tube.
• In 1922, Philo T. Farnsworth develops the first tube scanning system for television.
• In 1923, Vladimir K Zworykin invented the iconoscope or the cathode-ray tube and the kinescope.
• In 1926, Hull and Williams co-invented the tetrode electronic vacuum tube.
• In 1938, Americans Russell and Sigurd Varian co-invented the klystron tube.
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• John Ambrose Fleming
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• Computer Vacuum tube

• Lee DeForest Biography

  Lee De Forest

  Born: 1873-08-26 Birthplace: Council Bluffs, IA Died: 1961-06-30 Location of Death: Hollywood, CA Remains: Buried, San Fernando Mission Cemetery, Mission Hills, CA Race: White Political Party: Republican Field: Inventor Famous for: Inventor of the Audion vacuum tube