Spirograph Spirograph Spirograph is a geometric drawing toy that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. It was developed by British engineer Denys Fisher and first sold in 1965. The name has been a registered trademark of Hasbro Inc. since 1998 following purchase of the company that had acquired the Denys Fisher company. The Spirograph brand was relaunched worldwide with original product configurations in 2013 by Kahootz Toys. In 1827 English architect and engineer Peter Hubert Desvignes developed his "Speiragraph", a machine to create elaborate spiral drawings, intended to prevent bank note forgeries. The mathematician
Super City (toy) Super City (toy) The Super City toy is a construction set produced by Ideal Toys in 1967. It is similar to Lego, small plastic pieces which are assembled to create complex structures. However Super City is more oriented to buildings and allows more sophisticated constructions. Children could build skyscrapers, research laboratories and pharmaceutical factories. Super City is made of plastic frames which connect at the edges with grooves and studs into which fit a variety of wall panels. Frames can be connected at right angles by grooved and flanged columns. Frames are primarily square with some rectangles (half squares) and