U.S. Patent Office Model for an Improvement in Pantographs by Lucien F. Bruce and Newlan J. Wolcott
date: label: date made
content: 1871
label: date patented
content: 1871 09 12
name: label: maker
content: Bruce, Lucien F.
label: maker
content: Wolcott, Newlan J.
notes: label: Description
content: Lucien F. Bruce and Newlan J. Wolcott received U.S. Patent 118,902 for this “Improvement in Pantographs.” This is their patent model. It consists of eight metal bars, two 21.6 cm. long and six 11 cm. long. Holes in the bars and suitable pivot points allow one to alter the enlargement or reduction of the image. A pivot-post on the right side at the center (now missing) held the instrument to a drawing-board or table at the desired height. To enlarge drawings, once the bars were suitably set, a tracer-point was placed at the joint nearest the pivot-post. The drawing point was on the same line, at the joint furthest from the pivot-post. To reduce drawings, the tracer point and drawing point were reversed. No points survive.
label: Description
content: Lucien F. Bruce (1835-1910) and Newlan J. Wolcott were employees of the Springfield Armory in Springfield, Massachusetts. Bruce spent over fifty years at the Armory and took out a variety of patents. City directories indicate that Wolcott spent the years from 1859 to 1872 in Springfield and suggest that he eventually moved to Lowell, Massachusetts.
label: Description
content: References:
label: Description
content: US Patent 118902, September 12, 1871.
label: Description
content: “Obituaries,” <I>Machinery</I>, vol. 16, May, 1910, p. 784.
label: Description
content: City Directories for Springfield and for Lowell in Massachusetts.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Springfield
label: place patented
content: United States: Massachusetts, Springfield
label: place patented
content: United States: Massachusetts, Springfield
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Pantographs
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content: Science & Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.309334
label: catalog number
content: 309334
label: accession number
content: 89797
label: patent number
content: 118902
objectType: label: Object Name
content: pantograph
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: german silver (overall material)
label: Measurements
content: overall: 2.8 cm x 21.4 cm x 27 cm; 1 3/32 in x 8 7/16 in x 10 5/8 in