Worthington Direct-Acting Steam Pump, Patent Model
date: label: date made
content: 1855
label: patent date
content: 1855-07-31
name: label: inventor
content: Worthington, Henry R.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Henry R. Worthington, July 31, 1855, no. 13370.
label: Description
content: The model represents a double-acting water cylinder of a direct-connected steam pump so designed that toward the end of each stroke the pressure on each side of the water piston will be momentarily balanced to permit the expansion of steam already in the steam cylinder to quickly move the piston so that the steam valve operated by the piston will be quickly and positively opened for the return stroke.
label: Description
content: At the midpoint of the water cylinder is an opening connected to the force pipe through which the water is discharged. The piston is made of such length that this opening is uncovered to the suction side of the piston only near the end of the stroke. The effect of this is momentarily to subject both sides of the piston to the same water pressure and so relieve the steam piston of most of its resistance so that it can move rapidly and actuate the valve sharply and positively.
label: Description
content: The inventor refers to this as an improvement on the invention of “a new and improved method of insuring the action of steam valves in direct-acting pumping engines,” patented by himself and William H. Baker, April 3, 1849.
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 Jersey
label: associated place
content: United States: New York, Brooklyn
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.309245
label: accession number
content: 89797
label: catalog number
content: 309245
label: patent number
content: 13,370
objectType: label: Object Name
content: pump, steam, model
label: Object Name
content: patent model, pump, steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: iron (overall material)
label: Measurements
content: overall: 9 1/2 in x 6 1/2 in x 13 in; 24.13 cm x 16.51 cm x 33.02 cm
label: Measurements
content: overall-from catalog card: 6 in x 11 in; 15.24 cm x 27.94 cm