Otto and Bell Balanced Slide Valve, Patent Model
date: label: date made
content: 1883
label: patent date
content: 1883-12-18
name: label: inventor
content: Otto, Henry
label: inventor
content: Bell, Patrick F.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Henry Otto and Patrick F. Bell, of Bloomington, Illinois, December 18, 1883, no. 290650.
label: Description
content: The model represents a D-slide valve of ordinary shape, with most of the back cut away and formed in the shape of a short hollow cylinder. This cylinder is filled with a closed piston suspended on rollers on a flat bar, which, in turn, is suspended from the top of the valve chest. The bar passes through a tunnel in the piston and is of sufficient length to accommodate the valve travel. The effect of this construction is that the steam pressure ordinarily exerted on the back of a flat valve is in this case exerted on a piston that is not a part of the valve but is suspended independently.
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: Illinois
label: associated place
content: United States: Illinois, Bloomington
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
label: See more items in
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.308719
label: catalog number
content: 308719
label: accession number
content: 89797
label: patent number
content: 290,650
objectType: label: Object Name
content: valve, balanced, slide, model
label: Object Name
content: patent model, balanced slide
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall-from catalog card: 5 1/2 in x 4 1/2 in; 13.97 cm x 11.43 cm
label: Measurements
content: overall: 2 1/2 in x 6 1/2 in x 4 1/2 in; 6.35 cm x 16.51 cm x 11.43 cm