Daimler Gas Engine, Patent Model
date: label: date made
content: 1875
label: patent date
content: 1875-10-11
name: label: inventor
content: Daimler, Gottlieb W.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for Patent no. 168623, issued to Gottlieb Daimler, of Muelheim-on-the-Rhine, Prussia, October 11, 1875.
label: Description
content: Daimler, who was managing director of Otto’s Gas Moteren Fabric, 1872-1882, introduced this engine as an improvement over the Langen and Otto engine of 1866. The engine is of the double-acting, free-piston, atmospheric type.
label: Description
content: A water-jacket cylinder open to the atmosphere at both ends contains a working piston and two other pistons, one on each side of the working piston, which are loose or unconnected and operate in conjunction with the working piston in the following manner: With the working piston at the end of its back stroke, a charge of gas and air is drawn into the space between it and the front loose piston and is exploded. The said loose piston is thrown to the front end of the cylinder (without doing work) where it is held by a wedge device, whereupon a partial vacuum being formed in the cylinder by the expansion and cooling of the gaseous products of combustion, the working piston will by atmospheric pressure be caused to perform its forward stroke, the back loose piston traveling with it. On approaching the front loose piston the back loose piston is arrested in its motion while the working piston completes its stroke, moving close up to the front loose piston and expelling the products of combustion from between them, while at the same time a charge of gas and air is drawn into the space formed between the working piston and the back loose piston. On the charge being exploded, the back loose piston is thrown to the back end of the cylinder and the working piston performs its back stroke, together with the front loose piston, and the operation is repeated as above described.
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
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
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content: Bulletin 173
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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.308689
label: catalog number
content: 308689
label: accession number
content: 89797
label: patent number
content: 168,623
objectType: label: Object Name
content: engine, internal combustion, model
label: Object Name
content: patent model, engine, air & gas
label: Object Name
content: air and gas engine
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 5 3/8 in x 11 3/4 in x 6 in; 13.6525 cm x 29.845 cm x 15.24 cm
label: Measurements
content: overall - from catalog card: 5 in x 12 in; 12.7 cm x 30.48 cm