Underwood Sundstrand 11140P Adding Machine

Description:

American religious organizations have long used computing devices. The First Baptist Church of Suitland, Maryland owned this machine.

The ten-key printing electric adding machine has a block of nine white plastic keys with the 0 bar below. On the left are CORR, B’K (/) SPAC and X (/) REP’T keys. On the right are SUB- (/) TOTAL, ADD, and NO + (/) TOTAL keys. Above the keyboard is a place indicator. Above and behind this is the printing mechanism. One may enter numbers of up to ten digits, and print results of up to 11 digits.

A metal plate painted gray and held down with screws covers the spools of the two-color ribbon. The machine has a paper tape 2-1/2” (6.3 cm) wide. A lever on the right releases tension on the platen. A lever on the left sets the spacing. The motor is inside the case, at the back.

The machine is marked: Underwood (/) Sundstrand ... (/) Underwood Corporation (/) Protected by United States (/) and Foreign Patents (/) Made in U.S.A. It is also marked: 416151 (/) 11140P (/) UNIVERSAL MOTOR (/) VOLTS 115 AMPS. 1.5. The “11” in the first two digits of the model number corresponds to the number of possible digits in the total. The “P” refers to electric machines.

References:

American Business Machines Research, III, 1937.

Documentation 1990.3188.7.

Date Made: 1944

Maker: Underwood Corporation

Location: Currently not on view

Place Made: United States: Connecticut, Bridgeport

Subject: Mathematics

Subject:

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

Exhibition:

Exhibition Location:

Credit Line: Gift of First Baptist Church of Suitland, Maryland

Data Source: National Museum of American History

Id Number: 1978.0279.01Maker Number: 416151Accession Number: 1978.0279Catalog Number: 336517

Object Name: adding machine

Physical Description: metal (overall material)plastic (overall material)paper (overall material)Measurements: overall: 26 cm x 23.5 cm x 41 cm; 10 1/4 in x 9 1/4 in x 16 5/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-1359-704b-e053-15f76fa0b4fa

Record Id: nmah_690096

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