Cameron Pump Valves, Patent Model
date: label: date made
content: 1874
label: patent date
content: 1874-11-10
name: label: inventor
content: Cameron, Adam S.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Adam S. Cameron, of New York, New York, November 10, 1874, no. 156769.
label: Description
content: This invention relates to a design of pump valves so controlled by spindles and guides that the necessity of central bearings in the valve seat is avoided, leaving a clear circular opening for the passage of the fluid being pumped.
label: Description
content: The model represents a valve chest of a pump cylinder equipped with four valves arranged in pairs, in which one valve is located above the other. In each pair the valve stem of the upper valve projects upward into a hollow plug in the top of the valve chest and downward into a socket in the lower valve. The socket of the lower valve extends downward into a hollow plug or guide in the bottom of the valve chest. Both valves are spring closed and the lower valve is free to move independently of the upper valve.
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
label: associated place
content: United States: New York, New York City
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: ER.308686
label: accession number
content: 89797
label: catalog number
content: 308686
label: patent number
content: 156,769
objectType: label: Object Name
content: pump valve, model
label: Object Name
content: patent model, valve, pump
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: iron (overall material)
label: Measurements
content: overall-from catalog card: 10 in x 5 in x 10 in; 25.4 cm x 12.7 cm x 25.4 cm
label: Measurements
content: overall: 11 5/8 in x 4 5/8 in x 9 5/8 in; 29.5275 cm x 11.7475 cm x 24.4475 cm