Electrotherapeutic machine invented by Nairne, 1780-1809, early 19th century.
The cylinders of this electrotherapy machine are turned against the leather cushion, creating an electrical charge which is then transmitted to a Leyden jar. This holds the charge, which can then be passed to a flexible conductor used to deliver an electric shock to the patient.
Electrotherapy was used for a wide range of neurological and psychiatric disorders. This type of equipment was invented by Edward Nairne (1749-1806), an optical and mathematical instrument maker and natural philosopher. Electrotherapy came into popular use in England in the second half of the 1700s.