Patent Model - Improvement in Electro-Galvanic Chairs

Maker and role
S. Clesson Pratt (b.1831, d.1881), Patentee
Production date
Jan 29 1878
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Object detail

Wood, brass, steel, insulated wire
9 1/2 x 7 x 5" (24.1 x 17.8 x 12.7cm)
For medical use, Pratt's patent "consists in combining a galvanic and an electro-magnetic battery with a chair or other seat for the patient, so that either current separately or both currents together can be sent to the patient..." (Patent number: 199,663)
Object number
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