Cameron Pump Valves, Patent Model

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.
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.
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.
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.
Currently not on view
date made
patent date
Cameron, Adam S.
place made
United States: New York
associated place
United States: New York, New York
Physical Description
brass (overall material)
iron (overall material)
overall-from catalog card: 10 in x 5 in x 10 in; 25.4 cm x 12.7 cm x 25.4 cm
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
ID Number
accession number
catalog number
patent number
See more items in
Work and Industry: Mechanical and Civil Engineering
Industry & Manufacturing
Bulletin 173
Engineering, Building, and Architecture
Data Source
National Museum of American History


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