Allen Two-Motion Cone-Valve, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Horatio Allen, of New York, New York, June 19, 1855, no. 13075.
The model represents a conical plug valve, connected to a valve gear, which gives it two distinct motions. The first motion is a slight one parallel with the axis of the cone and directed toward its larger end; the other is in a direction tending to rotate the valve. Because the valve and valve seat are conical, the first motion effects a very slight separation of the valve from its seat and permits the rotary motion to be given without friction upon those parts.
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
Object Name
valve gear, cone, steam engine, model
patent model, valve, cone
date made
patent date
Allen, Horatio
overall: 3 1/4 in x 9 in x 4 1/4 in; 8.255 cm x 22.86 cm x 10.795 cm
place made
United States: New York
associated place
United States: New York, New York
ID Number
catalog number
accession number
patent number
Engineering, Building, and Architecture
Industry & Manufacturing
Bulletin 173
See more items in
Work and Industry: Mechanical and Civil Engineering
Bulletin 173
Data Source
National Museum of American History, Kenneth E. Behring Center
Related Publication
Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173

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