The following is an article from The Annals of Improbable Research.
A look back at twisting approaches to treating mental ailments
by Nan Swift, Improbable Research staff
Medical professionals, some of them, have tried using centrifugal force to treat and possibly cure their mental patients. Here are glances at a few of those attempts.
Halloran’s Spinning Swing
“Hallaran’s Circulating Swing,” Caoimhghín S. Breathnach, History of Psychiatry, vol. 21, no. 1, 2010, pp. 79–84. The author, at University College Dublin, explains:
William Saunders Hallaran (c.1765–1825) was physician superintendent at the County and City of Cork Lunatic Asylum for 40 years, where he distinguished between mental insanity and organic (systemic) delirium. In treatment he used emetics and purgatives, digitalis and opium, the shower bath and exercise, and argued that patients should be saved from “unavoidable sloth” by mental as well as manual occupation. However, it is as an exponent of the circulating swing, proposed by Erasmus Darwin and used by Joseph Cox, that he is remembered. His best results were achieved, as he recorded in An Enquiry [into… the Number of Insane {and} the Cure of Insanity] in 1810, by inducing sleep in mania of recent onset, but perhaps his most enduring observation was that some of his patients enjoyed the rotatory experience, and he had enough sense to allow the use of the swing as a mode of amusement.
Ninteenth Century Patient-Spinning
Detail from Victor Harsch’s treatise on old German methods of using centrifugal force to treat mental patients.