Marchant Model EB9 Calculating Machine
date: label: date made
content: ca 1930
name: label: maker
content: Marchant Calculating Machine Co.
notes: label: Description
content: This full-keyboard, non-printing electric pinwheel calculating machine has nine columns of plastic keys, colored according to the place value of digits entered. At the base of each bank of keys is a red clearance key. The underlying keyboard is painted green. Between banks of keys are metal rods for decimal markers. To the right of the keyboard are bars for subtraction and addition; a red ADD key, depressed for automatic clearance after each operation; and a stem for a clear key (the key is missing). Still further to the right is a column of nine keys for automatic multiplication. Left of the keyboard is a switch for the motor.
label: Description
content: Behind the keyboard is a movable carriage with 18 windows for the result register. Above this is a nine-digit entry register and a nine-digit revolution register. Clearance keys for these registers are to the right. At the back of the machine is the electric motor. The machine has an aluminum base and four rubber feet.
label: Description
content: A mark on metal tags attached to the sides of the machine reads: MARCHANT. A sticker attached to the back reads: MANUFACTURED BY (/) MARCHANT CALCULATING MACHINE CO. (/) OAKLAND, CALIFORNIA U.S.A. (/) PATENTED IN UNITED STATES & FOREIGN COUNTRIES (/) UNITED STATES 1,476,197 DEC. 4, 1923 (/) AUSTRALIA 5,861 MARCH 2, 1922 (/) CANADA 239,984 MAY 13, 1924 (/) CHILE 4,884 OCT. 18, 1922 (/) GREAT BRITAIN 185,552 JUNE 14, 1921 (/) HOLLAND & COLONIES 11,299 APRIL 16, 1924 (/) JAPAN 40,871 NOV.30, 1921 (/) SOUTH AFRICA 78 JAN. 27, 1922 (/) OTHER UNITED STATES AND FOREIGN PATENTS (/) ISSUED AND PENDING. A metal tag attached to the motor reads: MANUFACTURED FOR (/) MARCHANT (/) CALCULATING (/) MACHINE CO. (/) SIMPLICITY (/) ACCURACY (/) SPEED. It also reads: WESTINGHOUSE ELEC. & MFG. CO. A mark on the bottom of the machine reads: EB9-9060.
label: Description
content: The Marchant EB9 was introduced in 1926. The style of labels on the machines indicates that it was made before 1933. It sold for $550 in 1930 and was superseded that year by the EE.
label: Description
content: Compare 1984.3084.88.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Oakland
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Burton J. Udelson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0265.01
label: catalog number
content: 1988.0265.01
label: accession number
content: 1988.0265
label: maker number
content: EB9-9060
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: rubber (overall material)
label: Measurements
content: overall: 19 cm x 30.5 cm x 44 cm; 7 15/32 in x 12 in x 17 5/16 in