Geometric Model, L. Brill No. 229 Ser. 20 No. 2, Model Relating to Screw Motion
date: label: date made
content: 1892
name: label: maker
content: L. Brill
notes: label: Description
content: This is one of a set of models of ruled surfaces associated with screw motion originally published by Ludwig Brill in 1891 (supplements would appear in 1898). The series was designed by C. Tesch, an assistant to Christian Wiener (1826-1896), a professor at the technical high school in Karlsruhe. Tesch also designed Series 18 of Brill’s models and, after graduation, Series 22 (published in 1894, by which time Tesch is listed as an engineer with no academic affiliation).
label: Description
content: The model has a black metal frame and several broken gold threads. The ring at the top and the ring at the bottom are both divided by lopsided crosses. The side is in the shape of a spiral, supported by four vertical columns. An incomplete paper tag reads : [. . .] lungenge Regelschraabenfläche (II. Fall.) [/] [. . .] Brill. 20. Ser. Nr. II.
label: Description
content: References:
label: Description
content: L. Brill, Catalog, p. 48, 73.
label: Description
content: There is an example of this model in the collections at Dresden University, with discussion. See
label: Description
content: http://www.math.tu-dresden.de/modellsammlung/karte.php?ID=387,accessed September 4, 2020.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Hesse, Darmstadt
setName: label: See more items in
content: Medicine and Science: Mathematics
creditLine: label: Credit Line
content: Gift of Wesleyan University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1985.0112.180
label: catalog number
content: 1985.0112.180
label: accession number
content: 1985.0112
objectType: label: Object Name
content: geometric model
label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: string (overall material)
label: Measurements
content: overall: 22.5 cm x 22.3 cm x 22 cm; 8 27/32 in x 8 25/32 in x 8 21/32 in