Cipher Machine Component Associated with Edward Hebern - Rotor Component

Cipher Machine Component Associated with Edward Hebern - Rotor Component

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The American inventor Edward Hebern (1869-1952) designed a series of machines for encrypting messages. The Smithsonian collections include a few of these as part of accession 1991.0190. Like many inventors, Hebern accumulated a variety of spare parts. These are some of them, part of museum transaction 1991.3033.
This component consists of a steel center piece and one black bakelite side of a rotor. Spring contacts are around rim instead of in L-shaped pieces. The metal center piece has a relatively large hole. Thre are no wires. Letters are notedaround rim. This object is similar to 1991.3033.01 and 1991.3033.02 except for the size of the shaft hole; the contacts; and the incompleteness.
Currently not on view
Object Name
rotor component
Edward Hebern
Physical Description
steel (overall material)
plastic (overall material)
overall: 1.5 cm x 10.2 cm x 10.2 cm; 19/32 in x 4 1/32 in x 4 1/32 in
ID Number
catalog number
nonaccession number
Credit Line
Gift of T. Scripps Downing
Codes and Ciphers
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Medicine and Science: Mathematics
Data Source
National Museum of American History
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