A FINELY-REALISED WORKING SCALE MODEL OF THOMAS EDISON'S 'JUMBO' ENGINE-DRIVER DYNAMO, 1882
built by C.A. Holt with bound and lacquered coils, field switch, drum armature with pulley and copper gauze brush gear, finished in maroon with polished brightwork and mounted on a wooden plinth -- 16¼ x 8¼ x 12in. (41 x 21 x 30.5cm.)

Edison designed this pattern of dynamo to run in a series of six, powered by a steam engine, in 1882. Fire destroyed five of these in 1890, the remaining example working until 1893. It has been preserved since 1930 at the Ford Museum as a working example. According to a label on this model, it is capable of producing 12 volts, 6 amps at 2,400 r.p.m.

Condition Report
Apparently in fine overall condition with no seizing parts. Seems to run well. Mechanism is clean.

We are pleased to provide you with a general report of the condition of this property. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Charles Miller Ltd is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD “AS IS” IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE.