Woodbury’s Patent Model of an Automatic Cut-Off for a Steam Engine – ca 1870
date: label: date made
content: 1870
label: date made
content: ca 1870
label: patent date
content: 1870-09-27
name: label: inventor
content: Woodbury, Daniel A.
notes: label: Description
content: This model was filed with the application to the U.S. Patent Office for Patent Number 107,746 issued to Daniel A. Woodbury of Rochester, New York, on September 27, 1870. The patent was for an improved design for a governor which could control the cut-off valve for a steam engine. His design, instead of being based on fly balls and mounted on the steam valves, included a system of springs and weights placed directly on the engine's shaft. While more complicated and needing to be specifically designed for a particular engine, it had the advantage of accuracy and economy of operation. Mr. Woodbury's design became one of the first industrially successful shaft governors, and such governors became increasingly popular after this invention.
label: Description
content: The patent model is constructed of metal and mounted on a wood base. All of the key elements of the patent are illustrated by the model. A full description of the workings of the governor and diagrams showing the complete design of the patent can be found in the patent document online at the United States Patent and Trademark Office website, www.uspto.gov.
place: label: place made
content: United States: New York
label: associated place
content: United States: New York, Rochester
topic: label: Subject
content: Patent Models
label: Subject
content: Steam Engines
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
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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
label: Exhibition
content: Power Machinery
label: Exhibition Location
content: National Museum of American History
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.251290
label: catalog number
content: 251290
label: accession number
content: 48865
label: patent number
content: 107,746
objectType: label: Object Name
content: governor, woodbury, model
label: Object Name
content: patent model, engine, cut off for steam
physicalDescription: label: Measurements
content: overall: 12 in x 9 in; x 30.48 cm x 22.86 cm