This article needs additional citations for verification. Spirograph is a geometric drawing toy that produces mathematical roulette sets drawing children 5 years of the variety technically known as hypotrochoids and epitrochoids. The name has been a registered trademark of Hasbro Inc.
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 Bruno Abakanowicz invented the Spirograph between 1881 and 1900. It was used for calculating an area delimited by curves. Drawing toys based on gears have been around since at least 1908, when The Marvelous Wondergraph was advertised in the Sears catalog. In 2013 the Spirograph brand was re-launched worldwide by Kahootz Toys with products that returned to the use of the original gears and wheels.
The modern products use removable putty in place of pins or are held down by hand to keep the stationary pieces in place on the paper. The Spirograph was a 2014 Toy of the Year finalist in two categories, over 45 years after the toy was named Toy of the Year in 1967. The original US-released Spirograph consisted of two different-sized plastic rings, with gear teeth on both the inside and outside of their circumferences. To use it, a sheet of paper is placed on a heavy cardboard backing, and one of the plastic pieces—known as a stator—is secured via pins or reusable adhesive to the paper and cardboard.