Friedman Injector, Patent Model
date: label: date made
content: 1869
label: patent date
content: 1869-04-06
name: label: inventor
content: Friedmann, Alexander
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Alexander Friedman, of Vienna, Austria, April 6, 1869, no. 88620.
label: Description
content: The model represents a steam injector designed for elevating or forcing water and reducing the shock produced by the sudden condensation of steam when brought into contact with the water.
label: Description
content: The injector is of the usual form with the addition of a small auxiliary steam jet, or ejector, which serves to draw water into the mixing chamber before the main steam valve is opened. A safety cock is also provided, which permits a part of the water to escape as the pressure is being raised to the degree sufficient to overcome the resistance against which the injector is working.
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: Austria
label: associated place
content: Austria: Vienna state, Vienna
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
label: See more items in
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: ER.308679
label: accession number
content: 89797
label: catalog number
content: 308679
label: patent number
content: 88,620
objectType: label: Object Name
content: steam pump, model
label: Object Name
content: patent model, pump, steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 8 1/4 in x 11 in x 6 3/8 in; 20.955 cm x 27.94 cm x 16.1925 cm