Seller: m1ssmayh3m (54) 100%, Location: Glens Falls, New York, Ships to: US, Item: 113845916543 Davis & Kidder's Patent Magneto-Electric Machine for Nervous Diseases, 1854 Mahogany case with brass fittings and the full original label with 1854 patent date on the inside of the lid. The "patient" holds a metal cylinder in each hand while someone else winds the crank, setting in motion two felt-covered spoolsattached to a U-shaped magnet which sends an electric out of the wires and through the patient's body. This example is in working condition. It was tested on several Cowan's employees and produced a variety of responses, ranging from an addictive tingle to violent convulsions. This item is in good condition. All parts work. The wood is still gorgous, and the latches and hinges are not rusted.