Electrotype Printing Block Showing a Manual Hollerith Key Punch
date: label: date made
content: ca 1902
notes: label: Description
content: 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.
label: Description
content: For key punches similar but not identical to that shown, see MA.335634, MA.335635, and MA.333894.
label: Description
content: Reference:
label: Description
content: H. Hollerith, "Apparatus for Perforating Record Cards," U.S. Patent 682,197, September 10, 1901.
label: Location
content: Currently not on view
topic: label: web subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Computers & Business Machines
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content: Tabulating Equipment
creditLine: label: Credit Line
content: Gift of the Hollerith Family
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.0503.02
label: catalog number
content: 336121
label: accession number
content: 1977.0503
objectType: label: Object Name
content: electrotype printing block
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: 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