Quadrant
Quadrant may refer to:
Primary (geometrical) meanings:
Secondary meanings:
Quadrant (plane geometry)
The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes.
These are often numbered from 1st to 4th and denoted by Roman numerals: I (where the signs of the two coordinates are (+,+)), II (−,+), III (−,−), and IV (+,−). When the axes are drawn according to the mathematical custom, the numbering goes counter-clockwise starting from the upper right ("northeast") quadrant.
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Quadrant Cycle Company
The Quadrant Cycle Company was a company in Birmingham, England that was established in 1890 as a bicycle manufacturer. They advanced to make motorcycles from 1899 until their demise in 1928. They also made a tricar called Carette in 1899 and a small number of cars for about two years around 1906.
The company exhibited a car chassis with a four-speed Lloyd gearbox of the style known as "crossed rollers"; this allowed direct drive at all speeds. The used 14/16 or 20/22 hp engines made by White and Poppe.
See also
References
David Burgess Wise, The New Illustrated Encyclopedia of Automobiles.
Made in Birmingham, The Birmingham Motorcycle Industry
