Invented in 1836 by an Irish clergy Nicholas Callan at Maynooth College. It was originally used in medicine before going on to radio communication, X Rays, Cathode ray tubes, a valuable source of very high voltage. This model was featured in a lecture given in 1849 to the Royal College of Physicians by Golding Bird. Details from the Wellcome Collection. My cabinet maker had identified it as 1840s from the timber and the turning.
Wellcome Collection
Lectures on electricity and galvanism, in their physiological and therapeutical relations, delivered at the Royal College of Physicians, revised and extended. By Golding Bird / [Golding Bird].Lectures on electricity and galvanism, in their physiological and therapeutical relations, delivered at the Royal College of Physicians, revised and extended. By Golding Bird / [Golding Bird].
