Shaft with Ball Bearings Associated with Edward Hebern

Shaft with Ball Bearings Associated with Edward Hebern

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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 shaft holds two pieces. One has ball bearings the size of 1991.3033.26 and the other the size of 1991.3033.27.
Currently not on view
Object Name
shaft with ball bearings
Edward Hebern
Physical Description
aluminum (overall material)
steel (overall material)
overall: 5.3 cm x 14.2 cm x 6.8 cm; 2 3/32 in x 5 19/32 in x 2 11/16 in
ID Number
catalog number
nonaccession number
Credit Line
Gift of T. Scripps Downing
Codes and Ciphers
See more items in
Medicine and Science: Mathematics
Data Source
National Museum of American History
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