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.
Johnny Apollo (toy) Johnny Apollo (toy) Johnny Apollo is an American toy line from Marx Toy Company featuring two action figure astronauts, first released in 1968 in response to the then current interest in outer space and the US/Soviet Space Race. The astronauts were Johnny and Jane Apollo, stood approximately 8" (20.32 cm) in height and came with a variety of space gear, including helmet, backpack and hand tools. The toys first appeared in the US in 1968 and continued through the early '70s. Johnny Apollo's body was molded in white plastic with hinged joints and "flesh" colored hands and head. His accessories