Frost Steam Pump, Patent Model
date: label: date made
content: 1890
label: patent date
content: 1890-02-11
name: label: inventor
content: Frost, Richard L.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Richard L. Frost, of Battle Creek, Michigan, February 11, 1890, no. 421355. The patent was assigned to the Union Manufacturing Co. of the same place.
label: Description
content: The model represents a section through the steam cylinder, piston, and steam valve of a direct-connected steam water pump. The valve is a steam-actuated piston valve so designed that an increase in the exhaust pressure cannot act on the valve as to entirely close the live-steam port and stop the engine.
label: Description
content: The valve is a piston slide valve that admits live steam at its ends through a hollow section to the cylinder steam ports close to the middle of the valve. The exhaust is to the center. Formed on the ends of the piston valve are enlarged pistons which closely fit cylinders provided for them. Ports in these cylinders are so connected to the main cylinder ports and the main cylinder that pressure on one end serves practically to balance the valve, while pressure on the other end actuates the valve. The main piston is relatively long and has an annular depression between its two ends. The space thus formed between the piston ends and the cylinder in combination with ports in the cylinder acts to supply steam to the valve cylinder to actuate the valve.
label: Description
content: Reference:
label: Description
content: 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.
label: Location
content: Currently not on view
place: label: place made
content: United States: Michigan, Battle Creek
label: associated place
content: United States: Michigan, Battle Creek
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
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content: Bulletin 173
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content: Engineering, Building, and Architecture
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content: Work
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content: Industry & Manufacturing
publisher: label: Related Publication
content: Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.308718
label: catalog number
content: 308718
label: accession number
content: 89797
label: patent number
content: 421,355
objectType: label: Object Name
content: pump, steam, model
label: Object Name
content: patent model, valve, steam engine
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: iron (overall material)
label: Measurements
content: overall: 7 3/4 in x 14 1/8 in x 6 3/4 in; 19.685 cm x 35.8775 cm x 17.145 cm