Stevens Rocking Grate Bar, Patent Model
date: label: date made
content: 1879
label: patent date
content: 1879-11-11
name: label: inventor
content: Stevens, Francis B.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Francis B. Stevens, November 11, 1879, no. 221430.
label: Description
content: The model represents a grate surface formed of ordinary fish-bellied grate bars on each of the lower ends of which two journal bearings are formed to fit into and rest in two corresponding rounded socket bearings. The bar is made to rock in each of these bearings alternately to the right and left, so that the upper part of the grate overhangs the right-hand socket when rocked to the right, and the left-hand socket when rocked to the left. That the upper part of the grate bar will overhang the center on which it turns is the improvement claimed by the inventor.
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, Hoboken
label: associated place
content: United States: New Jersey, Hoboken
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.309217
label: catalog number
content: 309217
label: accession number
content: 89797
label: patent number
content: 221,430
objectType: label: Object Name
content: furnace grate, model
label: Object Name
content: patent model, furnace grate
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: cast iron (overall material)
label: Measurements
content: overall - from catalog card: 6 1/2 in x 10 1/2 in x 1 7/8 in; 16.51 cm x 26.67 cm x 4.7625 cm
label: Measurements
content: overall: 4 in x 6 3/4 in x 11 in; 10.16 cm x 17.145 cm x 27.94 cm