Otto and Crossley Gas Engine, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Nicolaus A. Otto, of Deutz, Germany, and Francis W. and William J. Crossley, of Manchester, England, October 23, 1877, no. 196473.
The gas engine described is designed to effect a gradual combustion of the charge by the use of a weak mixture in the cylinder. In order that the mixture would not ignite too slowly a strong or explosive mixture was introduced into a separate but connecting chamber and ignited in the conventional way. The flame issuing with some force from the chamber into the cylinder effected a sufficiently rapid ignition of the weak charge.
The inventors also describe a means of raining the pressure on the cavity of the slide valve carrying the burning ignition charge in a flame ignition engine, high enough to equal the compression pressure within the cylinder of the engine.
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
date made
patent date
Otto, Nicolaus A.
Crossley, Francis W.
Crossley, William J.
place made
United Kingdom: England
associated place
Deutschland: North Rhine-Westphalia, Deutz
overall: 5 1/2 in x 12 in x 7 in; 13.97 cm x 30.48 cm x 17.78 cm
gas engine model, from cat. card: 7 in x 11 in; 17.78 cm x 27.94 cm
ID Number
catalog number
accession 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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