Dalton Adding Machine

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This ten-key printing manually operated adding machine allows one to enter numbers and record totals up to ten digits. It has a dark brown metal body with two rows of white plastic number keys. Both numbers and their complements are indicated. The handle, mechanism, and stand are metal, with a wooden knob on the handle and carriage handles covered with decaying rubber. In addition to number keys, there are backspace, subtract, non-add and multiply keys on the keyboard. A hand-motor lever is to the right of these. Above it are release, total, and subtotal keys.
Directly above the number keys is a place indicator. To its left is the correction bar. Above these is the printing mechanism (with a two-color ribbon) and carriage (about 10” wide), and a paper tape. On the right is the crank. The machine is on a metal base, with a metal stand with wooden kick stand. There is no motor or cord. The stand has one wheel at the center of the back and two wheels at the front.
The machine is marked above the number keys: Dalton (/) CINCINNATI, OHIO. It is marked on the carriage: Dalton (/) ADDING, (/) LISTING AND (/) CALCULATING MACHINE. It is marked under the handle: NO203986. The underside of the base is marked: 0100. It is also marked: 0230A .
Office Machines Research Inc., section 3.21, 1937.
Currently not on view
date made
ca 1927
Dalton Adding Machine Company
place made
United States: Ohio, Cincinnati
Physical Description
metal (overall material)
paper (overall material)
wood (overall material)
plastic (overall material)
overall: 104 cm x 57 cm x 49 cm; 40 15/16 in x 22 7/16 in x 19 9/32 in
ID Number
accession number
maker number
catalog number
Credit Line
Gift of Cigar Makers International Union of America
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History


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