Object Details
- 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
- Credit Line
- Gift of the Hollerith Family
- ca 1902
- ID Number
- 1977.0503.02
- catalog number
- 336121
- accession number
- 1977.0503
- Object Name
- electrotype printing block
- 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
- See more items in
- Medicine and Science: Mathematics
- Computers & Business Machines
- Tabulating Equipment
- National Museum of American History
- web subject
- Mathematics
- Record ID
- nmah_1213837
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746aa-927d-704b-e053-15f76fa0b4fa
