Judson and Cogswell Governor, Patent Model
date: label: date made
content: 1875
label: patent date
content: 1875-11-09
name: label: inventor
content: Judson, Junius
label: inventor
content: Cogswell, William A.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to Junius Judson and William A. Cogswell, of Rochester, New York, November 9, 1875, no. 169815.
label: Description
content: The model represents a flyball governor in which the driving pulley is fitted loosely to the driving shaft and connected to it by a spiral spring, which allows a free turning of the pulley on the shaft to an extent sufficient to counteract the jerks or impulses, which are transmitted to the governor by the uneven operation of the engine.
label: Description
content: The inventor states that the ordinary crank motion of a steam engine results in an unequal operation that is not always equalized by the flywheel of the engine. This irregularity, though not always perceptible, is transmitted to the governor, which, when operated unevenly, would exaggerate the variations. This device is designed to prevent the jerks being transmitted to the governor.
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, New York City
label: associated place
content: United States: New York, Rochester
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: MC.309244
label: catalog number
content: 309244
label: accession number
content: 89797
label: patent number
content: 169,815
objectType: label: Object Name
content: governor, steam engine, model
label: Object Name
content: patent model, governor, steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall-from catalog card: 15 in x 18 1/4 in; 38.1 cm x 46.355 cm
label: Measurements
content: overall: 18 3/4 in x 15 in x 11 1/2 in; 47.625 cm x 38.1 cm x 29.21 cm