GB426405A - Improvements in or relating to punching machines for perforating statistical record-cards - Google Patents

Improvements in or relating to punching machines for perforating statistical record-cards

Info

Publication number
GB426405A
GB426405A GB27208/33A GB2720833A GB426405A GB 426405 A GB426405 A GB 426405A GB 27208/33 A GB27208/33 A GB 27208/33A GB 2720833 A GB2720833 A GB 2720833A GB 426405 A GB426405 A GB 426405A
Authority
GB
United Kingdom
Prior art keywords
magnet
brushes
line
plug
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27208/33A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Tabulating Machine Co Ltd
Original Assignee
British Tabulating Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Tabulating Machine Co Ltd filed Critical British Tabulating Machine Co Ltd
Publication of GB426405A publication Critical patent/GB426405A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/02—Methods or arrangements for marking the record carrier in digital fashion by punching
    • G06K1/06—Manually-controlled devices
    • G06K1/08—Card punches

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
GB27208/33A 1932-10-04 1933-10-03 Improvements in or relating to punching machines for perforating statistical record-cards Expired GB426405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US636129A US2016686A (en) 1932-10-04 1932-10-04 Punch

Publications (1)

Publication Number Publication Date
GB426405A true GB426405A (en) 1935-04-03

Family

ID=24550553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27208/33A Expired GB426405A (en) 1932-10-04 1933-10-03 Improvements in or relating to punching machines for perforating statistical record-cards

Country Status (4)

Country Link
US (1) US2016686A (enrdf_load_stackoverflow)
FR (1) FR763445A (enrdf_load_stackoverflow)
GB (1) GB426405A (enrdf_load_stackoverflow)
NL (1) NL39788C (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157040A (en) * 1937-07-20 1939-05-02 Ibm Punching machine
DE747602C (de) * 1939-02-20 1944-12-01 Hollerith Maschinen Ges M B H Zaehlkartenlocheinrichtung
US2784785A (en) * 1951-10-10 1957-03-12 Ibm Typewriter controlled tape punch
US3035764A (en) * 1955-05-24 1962-05-22 Telecomputing Corp Point of sale recorder

Also Published As

Publication number Publication date
NL39788C (enrdf_load_stackoverflow)
FR763445A (fr) 1934-04-30
US2016686A (en) 1935-10-08

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