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Robert Kay (1728–1802) was an English inventor, best known for designing a drop box to improve the capability of weaving looms. Robert Kay was born in 1728 to John Kay and Ann Holt. [1] He became a shuttlemaker in his native Bury, Lancashire, married in 1748 and had several children. His father emigrated to France in 1747 and was joined there ...
Running is a gait with an aerial phase in which all feet are above the ground (though there are exceptions). [1] This is in contrast to walking , where one foot is always in contact with the ground, the legs are kept mostly straight, and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. [ 2 ]
Wooden dandy horse (around 1820), a patent-infringing copy of the first two-wheeler Original Laufmaschine of 1817 made to measure.. The dandy horse, an English nickname for what was first called a Laufmaschine ("running machine" in German), then a vélocipède or draisienne (in French and then English), and then a pedestrian curricle or hobby-horse, [1] or swiftwalker, [2] is a human-powered ...
18th century: of the horse-drawn hoe and scarifier by Jethro Tull [2] [3] [4] 1780s: Selective breeding and artificial selection pioneered by Robert Bakewell (1725–1795). [5] 1842: Superphosphate or chemical fertilizer developed by John Bennet Lawes (1814–1900). [6] 1850s: Steam-driven ploughing engine invented by John Fowler (1826–1864). [7]
6 September – Edmund Gibson, Bishop of London and scholar (born 1669) 12 September – Anne Bracegirdle, actress (born c.1671) 21 September – John Balguy, philosopher (born 1686) 26 October – Donald Cameron of Lochiel, exiled Jacobite clan chief (born 1700 in Scotland) 25 November – Isaac Watts, hymn writer (born 1674)
1748 was a leap year starting on Monday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1748th year of the Common Era (CE) and Anno Domini (AD) designations, the 748th year of the 2nd millennium, the 48th year of the 18th century, and the 9th year of the 1740s decade. As of the start of 1748, the ...
Leonhard Euler publishes Introductio in analysin infinitorum, an introduction to pure analytical mathematics, in Berlin. [3] He calculates the mathematical constant e to 23 digits [4] and presents Euler's formula. Euler's fifth paper on nautical topics, E137, is also written in this year but not published until 1750.
He also invented two four-wheeled human powered vehicles (1813/1814), the second of which he presented in Vienna to the congress carving up Europe after Napoleon's defeat. [6] In 1842, he developed a foot-driven human powered railway vehicle whose name " draisine " is used even today for railway handcars.