Ericsson Hot-Air Engine, Patent Model

This model was submitted to the U.S. Patent Office with the application for Patent no. 226052, issued to John Ericsson, of New York, New York, March 30, 1880.
In this engine a charge of air is repeatedly heated and cooled as it is transferred from end to end of a single cylinder, one end of which is surrounded by a furnace, the other end of which is water jacketed. The air expands and contracts beneath a work piston that travels through a short stroke near the upper end of the cylinder. The air is displaced from end to end of the cylinder at the proper time by a large loosely fitting transfer piston independently connected to the crankshaft.
This model is similar in design to the pumping engine of 1906, accession number 309533.
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
engine, hot air, model
patent model, engine, air
patent date
Ericsson, John
Physical Description
brass (overall material)
wood (overall material)
metallic base - from catalog card: 8 in x 6 in; 20.32 cm x 15.24 cm
overall: 10 7/8 in x 8 1/8 in x 6 in; 27.6225 cm x 20.6375 cm x 15.24 cm
place made
United States: New York
associated place
United States: New York, New York
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

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.