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
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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