Miller Rotary Steam Engine, Patent Model

Miller Rotary Steam Engine, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Charles Miller, of Belleville, Illinois, May 3, 1859, no. 23852.
The engine has two oval pistons or cams each running in a separate circular cylinder or casing. Sliding abutments in the casing bearing on the edges of the cams direct the steam in the forward direction around the casing. Admission of steam is controlled by two flat slide valves working in steam chests on top of the casing. The valves are operated by two eccentrics on the engine shaft. The engine is reversible.
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
rotary steam engine, model
patent model, engine, steam
Object Type
Patent Model
date made
patent date
Miller, Charles
place made
United States: Illinois
associated place
United States: Illinois, Belleville
overall-from catalog card: 9 in x 12 in x 9 in; 22.86 cm x 30.48 cm x 22.86 cm
overall: 9 3/8 in x 12 in x 9 1/4 in; 23.8125 cm x 30.48 cm x 23.495 cm
ID Number
accession number
catalog number
patent number
See more items in
Work and Industry: Mechanical and Civil Engineering
Industry & Manufacturing
Bulletin 173
Engineering, Building, and Architecture
Data Source
National Museum of American History
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