Category: Electricity
Estimated Date: 1874
Name: Griggs Conical Electro Medical Machine
Manufacturer: W. Griggs

Description: 10“x 8“x 9” box with instructions in lid wooden compartment contains two brass sponge holding electrodes some accessories missing. Coil sits on 8.5“x 4.5“x 1.25” wooden platform covering compartment for battery. The coil is 7.25“x 3” conical shaped wooden covered with 4 brass posts and magnet at side. Made of mahogany, ivory knob for obturator has been replaced. Plaque reads: Griggs Conical Electro Magnetic Machine, Patent no.87 Jan. 8th 1873 33 Eastbourne Terrace Hyde Park London. Maker JR. Chislett, Plymouth. Another version without the box, Madein Mulgrave Place, Plymouth is elsewhere on this site.

Reference 1: 190