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Evaporating Salt Device Patent Model

Evaporating Salt Device Patent Model

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Description
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.
Location
Currently not on view
Object Name
patent model, evaporating salt device
Object Type
Patent Model
Date made
1871
patent date
1871-07-25
patentee
Howarth, John
inventor
Howarth, John
Associated Place
United States: Massachusetts, Essex
associated place
United States: Massachusetts, Salem
Measurements
overall: 3 1/2 in x 7 in x 12 in; 8.89 cm x 17.78 cm x 30.48 cm
ID Number
1999.0086.01
catalog number
1999.0086.01
accession number
1999.0086
patent number
117,290
subject
Patent Models
See more items in
Work and Industry: Maritime
America on the Move
Engineering, Building, and Architecture
Data Source
National Museum of American History
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