Carpenter Compound Hydraulic Engine, Patent Model
date: label: date made
content: 1878
label: patent date
content: 1878-12-17
name: label: inventor
content: Carpenter, Oramill C.
notes: label: Description
content: The model was submitted to the U.S. Patent Office with the application for the patent issued to Oramill C. Carpenter, of Brooklyn, New York, December 17, 1878, no. 210915.
label: Description
content: The engine is essentially a hydraulic transmission, which takes motion from eccentric cams on a central shaft turned by a steam or other engine and transmits the motion to shafts on either side of and parallel to the central shaft. The inventor designed the engine to be applied to a streetcar, and the model is mounted in a miniature nickel-plated car truck.
label: Description
content: It is a 4-cylinder engine with opposed cylinders in groups of two. Single-acting plungers work in and out of the cylinders as the central shaft is turned. The head of each cylinder leads directly to another cylinder of reduced diameter in each of which a driven piston works through a longer stroke in time with the short stork of the driving piston. Valves for the relief of an excess pressure of liquid and spring-cushioned piston heads are described for smoother running.
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: United States: New York
label: associated place
content: United States: New York, Brooklyn
topic: label: Subject
content: Patent Models
label: Subject
content: Engine
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
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content: Bulletin 173
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content: Engineering, Building, and Architecture
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content: Work
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content: Industry & Manufacturing
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content: Patent Models
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: MC.309252
label: catalog number
content: 309252
label: accession number
content: 89797
label: patent number
content: 210,915
objectType: label: Object Name
content: engine, hydraulic, model
label: Object Name
content: patent model, engine, hydraulic
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: nickel (overall material)
label: Measurements
content: overall - from catalog card: 7 in x 12 in; x 17.78 cm x 30.48 cm
label: Measurements
content: overall: 2 3/8 in x 7 1/8 in x 12 1/2 in; 6.0325 cm x 18.0975 cm x 31.75 cm