Lighthall Half-Beam Marine Engine, Patent Model
date: label: date made
content: 1849
label: patent date
content: 1849-10-23
name: label: inventor
content: Lighthall, William A.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to William A. Lighthall, of Albany, New York, October 23, 1849, no. 6811.
label: Description
content: The model shows a combination of a horizontal cylinder with a vertical beam to which the engine’s force is applied between the fulcrum and the connecting rod to the engine crank. It permits locating the propelling machinery of a side-wheel steamboat low within the hull.
label: Description
content: The model is a panel representing a horizontal cylinder with piston rod connecting to a short beam pivoted at a point below the level of the cylinder. From a short distance above the point at which the piston force is applied to the beam a long connecting rod connects to the crank on the engine shaft located above the cylinder and at the middle of its length. The location of the condenser below the cylinder and the location of the air pump and the manner of operating it are shown by the model.
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: United States: New York, New York City
label: associated place
content: United States: New York, Albany
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.308641
label: catalog number
content: 308641
label: accession number
content: 89797
label: patent number
content: 6,811
objectType: label: Object Name
content: patent model, engine, reciprocating steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: buff board (overall material)
label: Measurements
content: on buff board - from catalog card: 25 in x 19 in; 63.5 cm x 48.26 cm
label: Measurements
content: overall: 25 1/4 in x 19 1/8 in x 2 5/8 in; 64.135 cm x 48.5775 cm x 6.6675 cm