Jungle gym

History

The first jungle gym was invented in 1920 and patented by lawyer Sebastian Hinton in Chicago. It was sold under the trademarked name Junglegym. Hinton's second prototype "jungle gym" is still standing at the Winnetka Historical Society where it was relocated from the Crow Island School in Winnetka, Illinois. The term "monkey bars" appears at least as far back as the 1930s, though Hinton's initial 1920 patent appeals to the "monkey instinct" in claiming the benefits of climbing as exercise and play for children, and his improvement patents later that year refer to monkeys shaking the bars of a cage, children swinging on a "monkey runway", and the game of "monkey tag".

When Sebastian Hinton was a child, his father, mathematician Charles Hinton, had built a similar structure from bamboo with the goal of enabling children to gain an intuitive understanding of three-dimensional space through a game in which numbers for the x, y, and z axes were called out, and each child tried to be the first to grasp the indicated junction. Thus, the abstraction of Cartesian coordinates could be grasped as a name of a tangible point in space.

Safety

To reduce the risk of injury from falls, jungle gym areas often have a thick layer of woodchips, sand or other impact-absorbing material covering the ground. The American National Safety Council recommends that playgrounds have at least 12 in of such material.

Gallery

Image:Climbing-thing.jpg|A small jungle gym Image:ManonMonkeyBars.jpg|Hanging from monkey bars Image:RevJungleGym MobiusClimber.jpg| Landscape structures mobius climber Image:RevJungleGym SpacenetClimber3040.jpg|Landscape structures spacenet climber File:Boy in front of jungle gym, 1967.jpg|Boy in front of jungle gym, 1967 File:Jungle gym.JPG|A jungle gym in a school yard in Sweden, 2012 File:Japanesehighschoolgirlonmonkeybars-dec19-2014.jpg|Japanese schoolgirl on some monkey bars (雲梯), 2014 File:Råcksta jungle gym.jpg|A jungle gym in Sweden, 2016 USMC-16939.jpg|Military variant of the monkey bars

References

References

1. (1983-01-25). "Obituary for Carmelita Chase Hinton". The Star Press.
2. Hinton's original patents for the "climbing structure" are {{US patent. 1471465 filed July 22, 1920; {{US patent. 1488244 filed October 1, 1920; {{US patent. 1488245 filed October 1, 1920; and {{US patent. 1488246 filed October 24, 1921.
3. "About Us / History".
4. (1938-01-01). "DISTRICT OF COLUMBIA APPROPRIATION BILL FOR 1939 HEARINGS BEFORE THE SUBCOMMITTEE OF THE COMMITTEE ON APPROPRIATIONS UNITED STATES SENATE".
5. (1937-01-01). "Negligence and Compensation Cases Annotated". Callaghan.
6. In {{US patent. 1471465 Hinton wrote on page 3, "Again and importantly, the monkey instinct strong in all human beings and perhaps more clearly displayed in children, makes climbing a sport to which children enthusiastically take, by a psychology about the same as that of a kitten at play with a ball, which of course is practice for hunting."
7. In {{US patent. 1488244 Hinton wrote on page 3, "I have found, however, that children seem to like to climb through the structure to some particular point, and there swing head downward by the knees, calling back and forth to each other, a trick which can be explained of course only by the monkey instinct", and on page 4 he wrote, "I make considerable point of the great strength of the structure, as this is important. Thus most persons have seen a monkey in a zoo, seize the bars of his cage with hands and feet and throw his body violently back and forth, other monkeys following suit. Children in the structure I have erected do the same thing, apparently unconscious of any imitation of monkeys. It can be appreciated that with twenty-five or thirty heavy boys doing this, the strains on the structure are very great."
8. [http://www.winnetkahistory.org/gazette/j-is-for-jungle-gym/ {{"'J' is for Jungle Gym"] from Winnetka, Illinois Historical Society
9. Borrelli, Christopher. (November 19, 2018). "In Winnetka, the jungle gym was born. A look at its evolution, from sky-high rusted pipes to soft, risk-averse playgrounds". [[Chicago Tribune]].
10. "Playground Safety - National Safety Council".