Miller Mercury Motor, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Thomas Davidson Miller, of Pittsburgh, Pennsylvania, November 6, 1877, no. 196759.
The model represents a boiler, condenser, and an overshot wheel connected with suitable piping so that mercury placed in the boiler will be sublimated there and the fumes will rise to the condenser where they will be condensed. From the condenser the liquid mercury runs over the buckets of the wheel where the weight of the mercury is employed in turning the wheel. Suitable sheathing about the wheel collects the mercury and returns it to the boiler, which it enters by reason of its weight.
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
Currently not on view
Object Name
patent model, motor, mercury powered
date made
patent date
Miller, Thomas D.
overall: 10 3/8 in x 6 3/8 in x 10 3/8 in; 26.3525 cm x 16.1925 cm x 26.3525 cm
associated place
United States: Pennsylvania, Pittsburgh
ID Number
catalog number
accession number
patent number
Engineering, Building, and Architecture
Industry & Manufacturing
Bulletin 173
See more items in
Work and Industry: Mechanical and Civil Engineering
Bulletin 173
Data Source
National Museum of American History, Kenneth E. Behring Center
Related Publication
Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
Additional Media

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