Adding Machine Section, Burroughs Model 581

Description:

This is one of a series of adding machines and adding machine models prepared by the Patent Department of the Burroughs Adding Machine Company. It is a model of a key lock for adding machines invented by Frederick Dame. It includes a steel mechanism with one white plastic key, two key stems without keys, and two black-plastic rimmed numeral wheels. A complete set of nine white plastic keys with key stems is attached to the model. All the keys are octagonal. Keys for odd digits are concave, and flat for even digits. Complementary digits are indicated on the keys.

A metal tag attached to the object reads: B.A.M.CO. MODEL (/) NO. 581.

Objects 1982.0794.04 through 1982.0794.10 were received together as Burroughs Patent model 42.

Reference:

Frederick Dame, “Key Mechanism for Calculating Machines,” U.S. Patent 1,791,265, filed August 12, 1929, granted February 3, 1931.

Date Made: 1929

Maker: Burroughs Adding Machine Company

Location: Currently not on view

Place Made: United States: Michigan, Detroit

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Adding Machines, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of Burroughs Corporation

Data Source: National Museum of American History

Id Number: 1982.0794.07Accession Number: 1982.0794Catalog Number: 1982.0794.07

Object Name: adding machine model

Physical Description: plastic (overall material)steel (overall material)Measurements: overall: 11 cm x 7 cm x 27 cm; 4 11/32 in x 2 3/4 in x 10 5/8 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-13bf-704b-e053-15f76fa0b4fa

Record Id: nmah_690317

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