Original Odhner Model 229 Calculating Machine
date: label: date made
content: ca 1960
label: date made
content: 1967
name: label: maker
content: Aktiebolaget Original Odhner
notes: label: Description
content: This is a relatively late model of the calculating machine invented by the Swede W. T. Odhner in the 1870s and manufactured in Sweden from after World War I. The pinwheel lever-set non-printing machine has a metal frame painted gray with ten metal pinwheels and a metal base. Numbers are set by rotating the pinwheels forward using levers that extend from the wheels. Digits inscribed on the frame next to the rotating pinwheels show the number set, for there is no separate set of windows to show these digits.
label: Description
content: The carriage is at the front of the machine, with eight windows for the revolution counter on the left. The ten windows of the result register are right of the revolution register. Cranks at opposite ends of the carriage zero the registers on it. Two buttons move the carriage a single place to the right or left. A crank with a wooden knob on the right side of the machine rotates clockwise for addition and multiplication and counterclockwise for subtraction and division. Sliding decimal markers are above the pinwheels, the revolution counting register, and the result register. The machine has a plastic cover.
label: Description
content: A mark on the top of the machine reads: Original-Odhner. A paper label glued to the back reads: SKRIVEMASKINE-EXPERTEN (/) KOBMAGERGADE 2 (/) PA. 5291 KOBEBHAVN K. The serial number, stamped on the bottom, reads: 229-2484 (/) MADE IN SWEDEN. A plate under the zeroing mechanism on the right side reads: 5275-00. The inside of the cover has the mark: U. S. Naugahyde (/) 66.
label: Description
content: According to the donor, he purchased the machine on a trip to Europe in about 1960 (the instruction manual indicates that the instructions were issued in August of 1967)..
label: Description
content: For related documentation, see 1991.0183.02.
label: Description
content: Reference:
label: Description
content: Accession file.
label: Location
content: Currently not on view
place: label: place made
content: Sweden
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Mark A.R. Kuhn
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1991.0183.01
label: accession number
content: 1991.0183
label: catalog number
content: 1991.0183.01
label: maker number
content: 229-2484
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 14.5 cm x 38 cm x 19 cm; 5 23/32 in x 14 31/32 in x 7 15/32 in