Brunsviga Model B Calculating Machine
date: label: date made
content: 1902
name: label: maker
content: Grimme, Natalis & Co.
notes: label: Description
content: This lever-set, non-printing, and manually operated pinwheel calculating machine has a metal housing painted black, a brass and steel mechanism, and nine levers for entering numbers. A steel crank with a wooden handle that extends from the right side of the machine rotates backward (clockwise) for addition and multiplication, and forward (counterclockwise) for subtraction and division.
label: Description
content: A movable carriage at the front of the machine has 13 windows that show dials of the result register on the right, and eight windows for the revolution register on the left. The revolution register has no carry. The digits on the revolution register dial are white for additions and red for subtractions. Holes for decimal markers between digits of the result and revolution registers presently have no markers. Depressing a lever at the front of the machine releases the carriage for shifting. To zero the registers, one rotates wing nuts at the ends of the carriage. The left end of the carriage carries a bell.
label: Description
content: A mark on the front of the machine reads: BRUNSVIGA. A second mark there reads: No 4644. A third mark (part of the Brunsviga trademark) is: G.N.& C.C.a.A. A mark on the left side of the machine reads: Grimme, Natalis & Co.(/) Braunschweig - Brunswick (/) System W.T. Odhner. It includes a list of patents from Germany (64925), Belgium (91812), England (13700). Austria (45538), Hungary (69363); Switzerland (4578), and France (301119 and 303744). The United States is also listed, but no patent date is given. A fifth mark, on a property sticker attached to the back of the carriage reads: DEPARTMENT OF AGRICULTURE (/) 10248-WB-Z.
label: Description
content: The case has a wooden base and a metal lid painted black, with a leather handle and a place for a lock at the front. A cloth bag with small loose parts is stored with the machine.
label: Description
content: The Weather Bureau of the United States Department of Commerce transferred this machine to the Smithsonian in 1958.
label: Description
content: Reference:
label: Description
content: E. Martin, <I>The Calculating Machines (Die Rechenmaschinen)</I>, trans. P. A. Kidwell and M. R. Williams, Cambridge: MIT Press, 1992, pp. 109–113.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Lower Saxony, Brunswick
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: Transfer from US Department of Commerce, Weather Bureau
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.315904
label: catalog number
content: 315904
label: accession number
content: 222974
label: maker number
content: 4644
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: steel (overall material)
label: Physical Description
content: brass (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: leather (overall material)
label: Measurements
content: overall: 15.7 cm x 42 cm x 19.4 cm; 6 3/16 in x 16 17/32 in x 7 5/8 in