Uhry and Luttgens Valve Gearing, Patent Model
date: label: date made
content: 1855
label: patent date
content: 1855-03-20
name: label: inventor
content: Uhry, H.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to H. Uhry and H. A. Luttgens, of Paterson, New Jersey, March 20, 1855, no. 12564.
label: Description
content: The model represents a “link motion” applicable to marine, locomotive, or stationary steam engine. It is a combination of three eccentrics, the ordinary Stephenson link motion, an additional link pivoted to the Stephenson link, a differential rocker, and a main rocker. The main rocker and the Stephenson link operate one valve, which distributes steam to the cylinder, supplies outside lead, and cuts off the steam in proportion to the decrease of travel. The valve operated by the differential rocker exhausts the steam and opens and cuts off the admission of steam near full stroke of the piston.
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 Jersey
label: associated place
content: United States: New Jersey, Paterson
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.308656
label: catalog number
content: 308656
label: accession number
content: 89797
label: patent number
content: 12,564
objectType: label: Object Name
content: valve gearing, steam engine, model
label: Object Name
content: patent model, valve, steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: wood, brass (overall material)
label: Measurements
content: overall: 5 3/4 in x 13 1/4 in x 3 1/2 in; 14.605 cm x 33.655 cm x 8.89 cm
label: Measurements
content: cylinder and eccentrics - from catalog card: 10 in; 25.4 cm