GB125032A - Improvements relating to Cipher Apparatus. - Google Patents

Improvements relating to Cipher Apparatus.

Info

Publication number
GB125032A
GB125032A GB1853218A GB1853218A GB125032A GB 125032 A GB125032 A GB 125032A GB 1853218 A GB1853218 A GB 1853218A GB 1853218 A GB1853218 A GB 1853218A GB 125032 A GB125032 A GB 125032A
Authority
GB
United Kingdom
Prior art keywords
frame
letters
numerals
bars
cipher
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
GB1853218A
Inventor
Luigi Nicoletti
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1853218A priority Critical patent/GB125032A/en
Publication of GB125032A publication Critical patent/GB125032A/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
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/04—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

125,032. Nicoletti, L. Nov. 12, 1918. Ciphers.-A cipher apparatus comprises bars e sliding in a frame and provided with numerals 0 to 9 placed side by side and repeated in the same order on each bar. The transverse member c of the frame is made with a slot c<1> through which a column of numerals may be seen. The bars are moved until the numerals in the column are according to an agreed numerical key. In the construction shown in Fig. 2, the numerals then presented within the frame members a, b, c, d form a table by which the cipher can be formed by transposition of letters, according to any prearranged rule. In the construction shown in Fig. 6, exposed spaces g on a card placed behind the frame are filled in with the letters of the message. The cipher is then formed by writing the letters in line as they appear consequently in the vertical columns. The correspondent can, by setting his apparatus to the key and by reversing the process of re-arrangement of the letters, translate the code message into the original message. The bars e may engage each other by tongues h and grooves i, and may be provided with recesses l in register with each numeral so as to engage projections m on the member c of the frame and lock the bars in the set position. Each bar may be provided at the end with a differentiating character such as a Roman numeral.
GB1853218A 1918-11-12 1918-11-12 Improvements relating to Cipher Apparatus. Expired GB125032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1853218A GB125032A (en) 1918-11-12 1918-11-12 Improvements relating to Cipher Apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1853218A GB125032A (en) 1918-11-12 1918-11-12 Improvements relating to Cipher Apparatus.

Publications (1)

Publication Number Publication Date
GB125032A true GB125032A (en) 1919-04-10

Family

ID=32348008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1853218A Expired GB125032A (en) 1918-11-12 1918-11-12 Improvements relating to Cipher Apparatus.

Country Status (1)

Country Link
GB (1) GB125032A (en)

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