Model of a Hand Fired Water Tube Boiler – ca 1890

Model of a Hand Fired Water Tube Boiler – ca 1890

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This is a model of an inclined-tube, solid-header boiler of the type constructed about 1890 by the National Water Tube Boiler Company of New Brunswick, New Jersey. It incorporates many features patented by W.E. Kelly, an inventor from the same city. His patent was Number 523,793, dated July 31, 1894. A full description of the operation of the boiler along with complete diagrams of the patent can be found in the patent document online at the United States Patent and Trademark Office website,
The model is complete with ornamental front, gauges, and blow off safety valve. It is equipped with grates for hand firing. The brick work setting is cut away to show the boiler parts and the method of suspension. The orange serpentine arrows illustrate the path of the hot gases from the grate as they pass over the tubes three times prior to reaching the chimney.
Object Name
boiler, water tube, model
overall: 30 1/2 in x 41 in x 15 1/2 in; 77.47 cm x 104.14 cm x 39.37 cm
ID Number
catalog number
accession number
Credit Line
Gift of John A. Manley, New Brunswick, New Jersey
Steam Engines
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Work and Industry: Mechanical and Civil Engineering
Engineering, Building, and Architecture
Power Machinery
Exhibition Location
National Museum of American History
Data Source
National Museum of American History
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