Scheidler and McNamar Throttle Valve, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Reinhard Scheidler and John H. McNamar, of Newark, Ohio, June 8, 1875, no. 164219.
The model represents a piston shaped regulating valve operated by a lever, sector, and rack on the valve stem. It is designed for use as an auxiliary valve in connection with a throttle valve of ordinary form. The inventors describe the valve as being particularly well fitted for the control of sawmill engines.
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
patent model, valve, throttle
date made
patent date
Scheidler, Reinhard
McNamar, John H.
Physical Description
brass (overall material)
overall: 7 5/8 in x 5 1/8 in x 5 1/2 in; 19.3675 cm x 13.0175 cm x 13.97 cm
place made
United States: Ohio
associated place
United States: Ohio, Newark
ID Number
accession number
catalog 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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