Electrotype Printing Block Showing a Manual Hollerith Key Punch

Description
This electrotype printing block is engraved in metal and attached to a wooden block. It shows a manually operated, key-driven Hollerith card punch with 11 keys. Hollerith patented such a machine in 1901, but it had only ten keys, numbered from 0 to 9. The machine shown on the electroplate has these number keys, plus one marked X.
For key punches similar but not identical to that shown, see MA.335634, MA.335635, and MA.333894.
Reference:
H. Hollerith, "Apparatus for Perforating Record Cards," U.S. Patent 682,197, September 10, 1901.
Location
Currently not on view
date made
ca 1902
Physical Description
wood (overall material)
metal (overall material)
Measurements
overall: 2.3 cm x 9.1 cm x 5.4 cm; 29/32 in x 3 19/32 in x 2 1/8 in
ID Number
1977.0503.02
catalog number
336121
accession number
1977.0503
Credit Line
Gift of the Hollerith Family
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Tabulating Equipment
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

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