Otto Caloric Engine, Patent Model
date: label: date made
content: 1873
label: patent date
content: 1873-12-02
name: label: inventor
content: Otto, Nicolaus A.
notes: label: Description
content: This wooden model (incomplete) was submitted to the U.S. Patent Office with the application for Patent no. 145123, issued to Nicolaus Otto, of Deutz, Germany, December 2, 1873.
label: Description
content: In this engine hot gases were admitted to the cylinder above the piston during one-third of the down stroke. The remainder of the stroke dilated the confined gasses and rendered a great portion of the heat of the gases latent. The remaining portion of the heat was absorbed by the water-cooled cylinder surfaces and the piston was returned by the pressure of the atmosphere. The piston is so connected to the crankshaft that the upward stroke was much slower than the downward stroke to permit the heat that was rendered latent on the downstroke and that was liberated during the upstroke to be absorbed by the cooled surfaces of the cylinder.
label: Description
content: Reference:
label: Description
content: 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.
label: Location
content: Currently not on view
place: label: place made
content: Germany
label: associated place
content: Germany: North Rhine-Westphalia, Deutz
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
label: See more items in
content: Bulletin 173
label: See more items in
content: Engineering, Building, and Architecture
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content: Work
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content: Industry & Manufacturing
publisher: label: Related Publication
content: Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.308684
label: catalog number
content: 308684
label: accession number
content: 89797
label: patent number
content: 145,123
objectType: label: Object Name
content: engine, hot air, model
label: Object Name
content: patent model, engine, caloric
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 5 1/4 in x 5 1/2 in x 2 3/4 in; 13.335 cm x 13.97 cm x 6.985 cm