Luders Steam Boiler, Patent Model
date: label: date made
content: 1869
label: patent date
content: 1869-08-31
name: label: inventor
content: Luders, Herman W.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Herman W. Luders, of Philadelphia, Pennsylvania, August 31, 1869, no. 94226.
label: Description
content: The model represents a boiler having inclined water tubes projecting through forward and back brick walls, which form the furnace and boiler setting. The ends of the tubes projecting from the setting front and back are joined in sets of three by short horizontal cross tubes to large, vertical, upright pillar tubes on either side of the top of the setting. A third longitudinal drum is placed between the other two drums, and all three are joined by one cross drum above them. The short horizontal tubes at the back are cast in longitudinal sections and connected by ball-and-socket joints designed to permit the free expansion and contraction of the tubes.
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: Pennsylvania
label: associated place
content: United States: Pennsylvania, Philadelphia
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
label: See more items in
content: Bulletin 173
label: See more items in
content: Engineering, Building, and Architecture
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content: Work
label: See more items in
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.309211
label: catalog number
content: 309211
label: accession number
content: 89797
label: patent number
content: 94,226
objectType: label: Object Name
content: boiler, steam, model
label: Object Name
content: patent model, generator, steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 11 1/4 in x 11 1/8 in x 3 1/4 in; 28.575 cm x 28.2575 cm x 8.255 cm
label: Measurements
content: overall-from catalog card: 11 in x 10 in x 3 in; 27.94 cm x 25.4 cm x 7.62 cm