Gabriel Rotary Steam Engine, Patent Model

This model was submitted to the U.S. Patent Office with the application for the patent issued to Matthias Gabriel, of Newark, NJ, August 6, 1867, no. 67527.
The engine represented in the model is one of a great many similar designs for rotary steam engines, in which a vane or paddle on a rotary drum fits closely in the annular chamber between the drum and an outer casing and is driven around the chamber by the pressure of steam expanding between the paddle and an abutment that temporarily closes the chamber back of the paddle.
This engine has two sliding abutments, which are moved in (to close the chamber) and out (to clear the paddle as it passes) by means of a cam on the shaft of the engine and a system of followers and yokes. A plain D-slide valve is operated by pinions and rack from an eccentric on the shaft. Two expansions per revolution are obtained.
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
Gabriel, Matthias
place made
United States: New Jersey, Newark
associated place
United States: New Jersey, Newark
overall: 8 1/4 in x 11 1/2 in x 11 1/4 in; 20.955 cm x 29.21 cm x 28.575 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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