GB381267A - Improvements in cryptographic typewriters - Google Patents

Improvements in cryptographic typewriters

Info

Publication number
GB381267A
GB381267A GB21249/31A GB2124931A GB381267A GB 381267 A GB381267 A GB 381267A GB 21249/31 A GB21249/31 A GB 21249/31A GB 2124931 A GB2124931 A GB 2124931A GB 381267 A GB381267 A GB 381267A
Authority
GB
United Kingdom
Prior art keywords
shuttles
key
hammers
ciphered
clear
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
GB21249/31A
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.)
GASTON EDWARD WILKINSON
Original Assignee
GASTON EDWARD WILKINSON
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 GASTON EDWARD WILKINSON filed Critical GASTON EDWARD WILKINSON
Publication of GB381267A publication Critical patent/GB381267A/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)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Handling Of Sheets (AREA)
  • Input From Keyboards Or The Like (AREA)
GB21249/31A 1930-03-29 1931-07-24 Improvements in cryptographic typewriters Expired GB381267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB708928X 1930-03-29

Publications (1)

Publication Number Publication Date
GB381267A true GB381267A (en) 1932-10-06

Family

ID=10494207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21249/31A Expired GB381267A (en) 1930-03-29 1931-07-24 Improvements in cryptographic typewriters

Country Status (4)

Country Link
BE (1) BE378566A (enrdf_load_stackoverflow)
DE (1) DE568789C (enrdf_load_stackoverflow)
FR (2) FR699759A (enrdf_load_stackoverflow)
GB (1) GB381267A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE378566A (enrdf_load_stackoverflow) 1931-04-30
FR708928A (fr) 1931-07-30
DE568789C (de) 1933-01-25
FR699759A (fr) 1931-02-19

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