GB191407557A - Improvements in or relating to Cryptographic Typewriting Machines. - Google Patents

Improvements in or relating to Cryptographic Typewriting Machines.

Info

Publication number
GB191407557A
GB191407557A GB191407557DA GB191407557A GB 191407557 A GB191407557 A GB 191407557A GB 191407557D A GB191407557D A GB 191407557DA GB 191407557 A GB191407557 A GB 191407557A
Authority
GB
United Kingdom
Prior art keywords
wheel
type
bar
lever
code
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
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.)
INTERNAT ELECTRIC Co Ltd
Original Assignee
INTERNAT ELECTRIC 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 INTERNAT ELECTRIC Co Ltd filed Critical INTERNAT ELECTRIC Co Ltd
Application granted granted Critical
Publication of GB191407557A publication Critical patent/GB191407557A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C3/00—Typewriters for ciphering or deciphering cryptographic text
    • G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
    • G09C3/06—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member the connections being mechanical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
GB191407557D 1914-03-25 1914-03-25 Improvements in or relating to Cryptographic Typewriting Machines. Expired GB191407557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191407557T 1914-03-25

Publications (1)

Publication Number Publication Date
GB191407557A true GB191407557A (en) 1915-06-24

Family

ID=34360556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191407557D Expired GB191407557A (en) 1914-03-25 1914-03-25 Improvements in or relating to Cryptographic Typewriting Machines.

Country Status (2)

Country Link
DE (1) DE283697C (enrdf_load_stackoverflow)
GB (1) GB191407557A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE283697C (enrdf_load_stackoverflow)

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