As in a hanging, a cord would be wrapped around the neck of the condemned. However, rather than dropping down through a trapdoor, the condemned would be violently jerked into the air by means of a system of weights and pulleys. The objective of this execution method was to provide a swift death by breaking the condemned's neck.
Executions of this type took place in several U.S. states, notably Connecticut where amongst others the "Count of Gramercy Park", murderer and gang member Gerald Chapman was put to death by the method. The upright jerker was never very efficient at breaking the condemned's neck and was withdrawn from use by the 1930s.