A side friction roller coaster is an early roller coaster design invented by Edward Joy Morris. The design introduced side-friction wheels to help prevent trains from derailing during curved portions of the track. In addition to weight-bearing wheels traditionally located on the underside of each train car, friction wheels were added to both sides, which roll perpendicular along the inner edge of the track.

The first side-friction coasters appeared in the late 19th century and were mild in comparison to modern-day roller coasters. They declined in popularity several decades later as newer coasters began incorporating a third set of underfriction wheels, which further improved safety and allowed for more thrilling track designs.

History

Thompson's Switchback Railway that opened in 1884 at Coney Island.

The earliest gravity railways in the United States were used primarily to transport coal down mountains, often to the nearest river or canal.[1] The Mauch Chunk Railway (MCR) in eastern Pennsylvania was constructed in 1827 and was the second of its kind in the US.[1] Before long, tourists attracted to the novelty of this technology were offered rides.[1] Passengers enjoyed panoramic views along the descent, which started at a leisurely 5 mph (8.0 km/h) and reached speeds up to 65 mph (105 km/h).[1] The MCR and similar attractions became widely known as scenic railways.[2] The commercial success of these amusement rides inspired future advancements in what would eventually evolve into the modern-day roller coaster.[1][3]

One passenger inspired by the MCR was inventor and businessman LaMarcus Adna Thompson,[3] founder of the Eagle Knitting Company, a hosiery manufacturer.[4] Building upon earlier ride patents for concepts never constructed, he developed his own patent called the Switchback Railway.[3][5] The first installation opened as the Gravity Pleasure Switchback Railway at Coney Island in 1884.[6]

In 1894, Edward Joy Morris took the concept one step further with the invention of side-friction wheels that were installed vertically on the sides of each train car, which were then seated in a trough configuration.[6] Patented as the Figure Eight Toboggan Slide, the side-friction wheels made contact with the side rails, making derailment less likely.[6]

Side-friction roller coasters could achieve greater speeds than the switchback design, especially around curves, which led to thrill-inducing lateral g-forces.[6] The security of the updated design enabled roller coasters to operate without a brakeman, which were previously required to ride along and slow the train at various points along the track layout.[6] Instead, ride operators working in the loading station only needed to rely on a hand-operated friction brake to stop the train when it returned.[6]

Morris formed the Morris Chute Company, which manufactured carousels and roller coasters.[6] More than 250 Figure Eight coasters, also called toboggans, were installed around the world.[6] One of the well-known installations, Leap-The-Dips, opened in 1902 at Lakemont Park in Altoona, Pennsylvania.[7][8] It is one of the last remaining side-friction coasters still in operation.[8] In 1903, Morris sold the company, which reemerged in 1904 as the Philadelphia Toboggan Company.[6] The invention of underfriction wheels, also called up-stop wheels, resulted in the demise of the side-friction configuration.[2] Introduced in 1912 by John A. Miller, the newer design added a third set of wheels running beneath the track, further enhancing security from derailment, which paved the way for faster speeds, steeper drops, and new elements in track design such as the airtime hill.[2][9]

Notable installations

References

  1. 1 2 3 4 5 "The History of Roller Coasters: The Mauch Chunk Gravity Railway". Entertainment Designer. October 8, 2011. Archived from the original on October 8, 2012.
  2. 1 2 3 "A Century of Screams: The History of the Roller Coaster". PBS. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  3. 1 2 3 Frato, John (July 5, 2022). "Opening Day: First Roller Coaster in the USA June 16, 1884". Western Reserve Historical Society. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  4. ↑ "The Story of LaMarcus Adna Thompson and his Roller Coaster Business". PeoPlaid. May 29, 2021. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  5. ↑ Potter, Derek (November 10, 2013). "Theme Park History: L.A. Thompson, the father of the themed roller coaster". Theme Park Insider. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  6. 1 2 3 4 5 6 7 8 9 "Leap-The-Dips Roller Coaster Historical Marker". ExplorePAhistory.com. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  7. ↑ Marden, Duane. "Leap-The-Dips  (Lakemont Park)". Roller Coaster DataBase. Retrieved May 10, 2023.
  8. 1 2 Fornwalt, Todd W. (2010). "Leap-the-Dips: A Thrill From the Past". The Pennsylvania State University. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  9. ↑ "Coaster Landmark - Jack Rabbit". American Coaster Enthusiasts. August 15, 2015. Archived from the original on May 10, 2023. Retrieved May 10, 2023.
  10. ↑ Todd W. Fornwalt (2010). "Leap-the-Dips: A Thrill From the Past". Penn State University. Archived from the original on May 28, 2015. Retrieved May 14, 2015.
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