Hydraulic Ram

Hydraulic Ram

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Description
Hydraulic ram from the Paul Laurence Dunbar High School in Washington, D.C., a school that was established in 1870 as the Preparatory High School for Colored Youth. It may date from 1916 when the school moved into a new building specially built for the purpose. The "KNOTT APP. CO. BOSTON" inscription is that of an important apparatus firm. Knott termed it a “Commercial type demonstration hydraulic ram with glass air chamber” so designed that the working parts could be seen in operation.
Ref: L. E. Knott Apparatus Co., Harcourt Equipment for Physics (Cambridge, Mass., 1928), p. 74.
Location
Currently not on view
Object Name
hydraulic ram
maker
L. E. Knott Apparatus Company
place made
United States: Massachusetts, Boston
Measurements
overall: 13 in x 10 in x 5 1/2 in; 33.02 cm x 25.4 cm x 13.97 cm
overall: 13 in x 10 1/2 in x 8 3/4 in; 33.02 cm x 26.67 cm x 22.225 cm
ID Number
PH.323749
catalog number
323749
accession number
252354
Credit Line
Dunbar High School
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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