Bramwell Valve, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to William Bramwell, of New York, New York, June 14, 1859, no. 24639.
The model represents a valve in which a gate swinging upon a horizontal axis is opened or closed by means of a band wheel, vertical screw, and toggle link.
The gate of the valve is a conical plug that swings on an arm from a pivot above it. When closed the gate fits a conical seat in the valve body; when opened it swings up into the top of the valve body practically clear of the passages. The peculiar feature of the valve is the arrangement of parts, which permits the closing of a swing-gate valve by means of a hand wheel and screw.
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
Bramwell, William
place made
United States: New York, New York
associated place
United States: New York, New York
overall: 11 1/2 in x 6 1/2 in x 6 1/2 in; 29.21 cm x 16.51 cm x 16.51 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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