Evaporating Salt Device Patent Model
date: label: Date made
content: 1871
label: patent date
content: 1871-07-25
name: label: patentee
content: Howarth, John
label: inventor
content: Howarth, John
notes: label: Description
content: This patent model accompanied John Howarth’s patent application that received patent number 117,290 on July 25, The patent describes a process for extracting sulphate of lime (gypsum) from salt brine (concentrated sea water) by evaporating the brine and then superheating it.
label: Location
content: Currently not on view
place: label: Associated Place
content: United States: Massachusetts, Essex
label: associated place
content: United States: Massachusetts, Salem
topic: label: Subject
content: Patent Models
setName: label: See more items in
content: Work and Industry: Maritime
label: See more items in
content: Engineering, Building, and Architecture
label: See more items in
content: America on the Move
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1999.0086.01
label: catalog number
content: 1999.0086.01
label: accession number
content: 1999.0086
label: patent number
content: 117,290
objectType: label: Object Name
content: patent model, evaporating salt device
label: Object Type
content: Patent Model
physicalDescription: label: Measurements
content: overall: 3 1/2 in x 7 in x 12 in; 8.89 cm x 17.78 cm x 30.48 cm