Spirograph a hypocycloid. 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.
Fisher-Price toy ever sold was "Dr. Doodle" in 1931. (The same toy, in excellent condition, would be worth a considerable amount in today's collectibles market.) In the early 1950s, Fisher-Price identified plastic as a material that could help the company incorporate longer-lasting decorations and brighter colors into its toys. "Buzzy Bee" was the first Fisher-Price toy to make use of plastic. By the end of the 1950s, Fisher-Price manufactured 39 toys incorporating plastics. During the 1960s, the Play Family (later known as Little People) product line was introduced and soon overtook the popularity of earlier toys. Herman Fisher retired at the