Dalton Extra-Special Adding Machine

Dalton Extra-Special Adding Machine

Usage conditions apply
This ten-key printing manual adding machine has an aluminum frame painted black with a steel keyboard painted green. The digit keys, which include complementary digits in red, are arranged in two rows.. On the right are plastic repeat and total keys. On the left is another key stem, with no key cover. There is no place indicator. The metal crank with wooden handle is on the right side. The printing mechanism is behind this, with a 2-5/8" carriage apparently designed for a 2-1/2” paper tape. There is no paper tape. The ribbon prints in both black and red. Apparently the machine does not print symbols.
The machine is marked on a metal tag attached to the front: THE (/) DALTON (/) ADDING (/) MACHINE (/) CO. (/) REG.U.S.PAT.OFF. It is also marked there: PAT. SEPT. 24, 1912, No. 1039130 (/) PAT. DEC. 31, 1912, No. 1049057 (/) PAT. DEC. 31. 1912, No. 1049093 (/) OTHER PATENTS PENDING (/) CINCINNATI, OHIO(EAST NORWOOD). It is marked on the back: NO28554.
The donor, Bobbie Harvey, was a member of the Smithsonian guard force and donated this machine in 1975. He said it was given to his father by a friend some years previously.
Compare to MA.323329.
Currently not on view
Object Name
adding machine
Other Terms
adding machine; Ten-Key, Listing, Manual
date made
Dalton Adding Machine Company
place made
United States: Ohio, Cincinnati
Physical Description
aluminum (overall material)
steel (overall material)
plastic (overall material)
rubber (overall material)
overall: 34.5 cm x 32 cm x 37.5 cm; 13 19/32 in x 12 19/32 in x 14 3/4 in
ID Number
accession number
maker number
catalog number
Credit Line
Gift of Mr. Bobbie Harvey
See more items in
Medicine and Science: Mathematics
Adding Machines
Science & Mathematics
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.


Add a comment about this object