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Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. The well-known toy version was developed by British engineer Denys Fisher and first sold in 1965.
Between 1962 and 1964 he developed various drawing machines from Meccano pieces, eventually producing a prototype Spirograph. Patented in 16 countries, it went on sale in Schofields department store in Leeds in 1965. A year later, Fisher licensed Spirograph to Kenner Products in the United States. In 1967 Spirograph was chosen as the UK Toy of ...
Among his other patents were the parabolagraph, the spirograph, the electric bell used in trains, and an electric arc lamp of his own design. [5] Abakanowicz published several works, including works on statistics , integrators and numerous popular scientific works, such as one describing his integraph .
The first shipment of Spirograph arrived just before Christmas in 2012. The Spirograph (along with Kahootz' Lite-Brite) was exhibited at the 2013 Sweet Suite 13 [4] show in Chicago, Illinois and the 2014 American International Toy Fair in New York City, New York. [5] Since then, Kahootz Toys has expanded and released numerous new products and ...
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As a young man in 1827 he had developed a so-called "Speiragraph", an early prototype for the spirograph. He evidently continued on with experiments and inventions, and on 27 February 1860 received British patent no. 537 for 28 monocular and stereoscopic variations of cylindrical stroboscopic devices (see zoetrope ). [ 7 ]
This template formats a citation to a book using the provided bibliographic information (such as author and title) as well as various formatting options. Template parameters [Edit template data] This template has custom formatting. Parameter Description Type Status Last name last last1 author author1 author1-last author-last surname1 author-last1 subject1 surname author-last subject The ...
{{Book table | background = #A2BBAC | book_number = | title = | author = | publisher = | publish_date = | genre = | aux1 = Length | isbn = | books = {{Book list | book_number = 1 | title = [[Anne of Green Gables]] | author = [[Lucy Maud Montgomery]] | publisher = [[L. C. Page & Co.]] | publish_date = April 1908 | genre = [[Children's literature | Children's novel]] | aux1 = 429 pp ''(first ...