Mortar, Mixer, and Grinder Machine patent model
date: label: date made
content: 1873
notes: label: Description (Brief)
content: This is a patent model of a mortar mixer-grinder created by Edward Spaulding. It is an example of building and construction technology before the rise of Portland cement. Mortar mixers were used to produce natural cement or lime mortar, that pulled carbon dioxide out of the atmosphere once applied to structures. Natural lime mortars were thus relatively carbon neutral.
label: Description (Brief)
content: Tag reads "Patent Model / Mortar, Mixer, Grinder / pat. no. 139,338 / Edward Spaulding / May, 1873"
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
creditLine: label: Credit Line
content: Gift of Sandy Ball
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2023.0156.1
label: catalog number
content: 2023.0156.1
label: accession number
content: 2023.0156
objectType: label: Object Name
content: patent model
physicalDescription: label: Measurements
content: overall: 4 in x 11 1/4 in x 5 in; 10.16 cm x 28.575 cm x 12.7 cm