Smithsonian museums continue to be closed to support the effort to contain the spread of COVID-19. Read a message from our director, and check our website and social media for updates.

Burroughs Class 9 Subtractor

Burroughs Class 9 Subtractor

<< >>
Usage conditions apply
This model of a section of a Burroughs Class 9 adding machine has a steel mechanism in a steel framework painted brown. It has one column of black plastic number keys, and one column of red and white plastic function keys. There is part of a carriage, part of a printing mechanism, and a place for one spool of a ribbon. The mechanism is on a metal support that fits into a wooden stand. There is no cover for the sides.
The Burroughs Class 9 was introduced in 1926. This is model #241 Patent Division of Burroughs Corporation, although there is no departmental tag. A metal tag attached to the object reads: DONATED TO (/) The Smithsonian Institution (/) by (/) Burroughs Corporation.
Currently not on view
Object Name
adding machine section
date made
ca 1926
Burroughs Adding Machine Company
place made
United States: Michigan, Detroit
Physical Description
plastic (overall material)
metal (overall material)
wood (overall material)
paper (overall material)
overall: 46 cm x 25 cm x 38 cm; 18 1/8 in x 9 27/32 in x 14 31/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Burroughs Corporation
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
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.

Note: Comment submission on our collection pages is temporarily unavailable. Please check back soon!

If you have a question or require a personal response, please visit our FAQ or contact page.