Essex Patented Engine
date: label: date made
content: 1903
notes: label: Description (Brief)
content: Henry Essex of Buffalo, New York received patent number 723,660 in 1903 for this design of a caloric engine. The engine is a “hot air” or caloric engine, where heated air powers the piston before being cooled and returning to be heated, continuously producing work. The engine consists of a flywheel at one end with displacing rod, a heating element in the center with two piston inside, and cool air pockets on either side of the center.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
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content: Family & Social Life
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content: Engineering, Building, and Architecture
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content: Engineering Steam Toys and Models
publisher: label: Related Publication
content: Maass, Eleanor A.. Greville Bathe's "Theatre of Machines": The Evolution of a Scholar and His Collection
creditLine: label: Credit Line
content: Bequest of the Estate of Greville I. Bathe
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.329058
label: catalog number
content: 329058
label: accession number
content: 278175
objectType: label: Object Name
content: engine, hot air
physicalDescription: label: Physical Description
content: metal, wood (overall material)
label: Measurements
content: overall - from catalog card: 8 in x 18 1/2 in x 7 in; 20.32 cm x 46.99 cm x 17.78 cm
label: Measurements
content: flywheel - from catalog card: 6 in; x 15.24 cm
label: Measurements
content: overall: 8 1/4 in x 7 in x 19 in; 20.955 cm x 17.78 cm x 48.26 cm