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The odometer was also independently invented in ancient China, [3] possibly by the prolific inventor and early scientist Zhang Heng (78 AD – 139 AD) of the Han dynasty. By the 3rd century (during the Three Kingdoms Period), the Chinese had termed the device as the 'jì lĭ gŭ chē' (記里鼓車), or ' li -recording drum carriage' (Note: the ...
A 1921 news article in the Deseret News claimed that Clayton's original odometer was "the first of its kind". The paper published a correction from an engineer, who clarified that odometers existed as early as 12 B.C. in Rome. The incorrect idea that Clayton's odometer was the first persisted. [1]: 100–101
There is a fusee in the earliest surviving spring-driven clock, a chamber clock made for Philip the Good in c. 1430. [109] Leonardo da Vinci, who produced the earliest known drawings of a pendulum in 1493–1494, [110] illustrated a fusee in c. 1500, a quarter of a century after the coiled spring first appeared. [111] The so-called 'Henlein Watch'
Sometimes inventions are invented by several inventors around the same time, or may be invented in an impractical form many years before another inventor improves the invention into a more practical form. Where there is ambiguity, the date of the first known working version of the invention is used here.
An odometer for measuring distance was first described by Vitruvius around 27 and 23 BC, although the actual inventor may have been Archimedes of Syracuse (c. 287 BC – c. 212 BC). It was based on chariot wheels turning 400 times in one Roman mile. For each revolution a pin on the axle engaged a 400 tooth cogwheel, thus turning it one complete ...
Invented by Heron based on Ctesibius' double-action piston pump. [33] Allowed for more efficient fire fighting. Vending machine: 1st century BC The first vending machine was described by Heron of Alexandria. His machine accepted a coin and then dispensed a fixed amount of holy water. When the coin was deposited, it fell upon a pan attached to a ...
Surveyor's wheels will provide a measure of good accuracy on a smooth surface, such as pavement. On rough terrain, wheel slippage and bouncing can reduce the accuracy. Soft sandy or muddy soil can also affect the rolling of the wheel. As well, obstacles in the way of the path may have to be accounted for separately.
Roadometer (odometer), an early device like an odometer for measuring mileage, towed by a wagon, invented in 1847, by William Clayton, a Mormon pioneer. A type of Drivotrainer , one of these was called a Roadometer .