King Direct-Acting Pump Valve Gear, Patent Model
date: label: date made
content: 1870
label: patent date
content: 1870-09-20
name: label: inventor
content: King, John C.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to John C. King, of New York, New York, September 20, 1870, no. 107504.
label: Description
content: The model represents a direct-connected steam pump provided with rotary oscillating valves on the steam and water cylinders operated by an arm on the piston rod and a swinging lever. The peculiar feature of the design is the use of a sharp-edged spring-actuated slide, which acts upon a roller on the swinging lever to rapidly change the valve position as the pistons near the end of their strokes. During the first part of the stroke the roller on the swinging lever acts upon one side of the slide and forces it up against a coil spring. Toward the end of the stroke the roller passes under the sharp edge of the slide and the force of the spring causes the slide to push the roller and swinging lever rapidly in the direction in which it is traveling.
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: New York
label: associated place
content: United States: New York, New York City
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: ER.308682
label: accession number
content: 89797
label: catalog number
content: 308682
label: patent number
content: 107,504
objectType: label: Object Name
content: pump, steam, model
label: Object Name
content: patent model, valve gear, steam pump
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: wood, brass (overall material)
label: Measurements
content: wood steam pump-from catalog card: 10 in; 25.4 cm
label: Measurements
content: overall: 8 1/4 in x 11 1/2 in x 3 1/2 in; 20.955 cm x 29.21 cm x 8.89 cm