US3250020A - Apparatus for coding and decoding - Google Patents

Apparatus for coding and decoding Download PDF

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Publication number
US3250020A
US3250020A US309825A US30982563A US3250020A US 3250020 A US3250020 A US 3250020A US 309825 A US309825 A US 309825A US 30982563 A US30982563 A US 30982563A US 3250020 A US3250020 A US 3250020A
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United States
Prior art keywords
chart
coding
rows
characters
series
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Expired - Lifetime
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US309825A
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English (en)
Inventor
Nyberg Sture
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Anstalt Europaeische Handelsgesellschaft
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Anstalt Europaeische Handelsgesellschaft
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    • 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

Definitions

  • coding apparatus are known at the present time which execute displacing movements of letter or other indicia-bearing carriers by means of counting or adding machine-type machanism, and which are provided with printing devices or purely visual readout or output means.
  • Such apparatus are generally only provided with a single alphabet at the side of the letters.
  • the present invention is directed to an improved arrangement for enciphering and deciphering information or the like, manifested in the provision of a visual inputbutput system and utilizes a ixedly positioned or positionable table or chart provided with randomly arranged rows of characters of an indicia system which are disposed in parallel lines. Additionally, according to one important aspect of the invention there is provided a displaceable slide member containing at least one row of orderly or alphabetically arranged indicia and which is capable of moving vertically relative to the aforesaid rows of characters.
  • the movable slide member is operatively coupled to a coding device in such a manner that, for each of the possible positions or conditions of the output member of the coding device, the slide member automatically adjusts or regulates itself to cooperate with a given row of indicia.
  • the slide member automatically adjusts or regulates itself to cooperate with a given row of indicia.
  • a further important object of the present invention is to provide an improved coding and decoding apparatus which is highly reliable in operation, easy to manipulate and relatively economical to manufacture.
  • Still another important object of the present invention is the provision of an improved coding and decoding apparatus provided with a slide member which cooperates with a chart, table or the like having rows of indicia or markings thereon, and means for imparting relative movement between said chart and slide member such that said slide member and a selected row of indicia appearing on said chart come into operable coding or decoding relationship with one another.
  • FIGURE l illustrates a practical embodiment of an arrangement for coding and decoding which is operably coupled with a coding mechanism or device
  • FIGURE la is a fragmentary view of a modified chart having associated therewith a cooperating slide member
  • FIGURE 1b is a fragmentary view of still a further modified chart
  • FIGURE 2 illustrates a read-in and read-out chart having associated therewith a variant form of slide member
  • FIGURES 3 and 4 schematically illustrate different possible forms of charts
  • FIGURE 5 schematically illustrates a variant construction of the arrangement according to the invention.
  • reference numeral 1 generally denotes an indicia carrier, which in the illustrated embodiment is shown in the form of a sheet-like alphabet table or chart.
  • This alphabet table or chart 1 is provided at its front face 1a with n number of superimposed, horizontally extending rows of randomly arranged indicia or characters. It will be seen that such indicia or characters have been shown, by way of example land not limitation, to be letters of the alphabet.
  • n of the chart 1 advantageously corresponds to an integral multiple of m, wherein m represents the number of conditions or positions of the output member 2, here depicted as a rotatable shaft constructed as an entraining means, of the coding mechanism or device 3.
  • the coding mechanism 3 may be of the type possessing a keyboard or the like provided with a number of keys which can be selectively actuated, each such key imparting a .predetermined condition, in this case a predetermined langular rot-ation or position to the output member 2.
  • Coding mechanism suitable for the purposes of the presen-t invention are well known to the art, and for such reason need not be more fully explained herein, particularly since reference may be made to United States Patent 2,851,794 disclosing a coding mechanism suitable for use with the invention,
  • the output member 2 of the coding mechanism or device 3 transmits its selected condition or position, as determined by its angle of rotation, through the agency of an arm or lever 4 to a cord pulley 5.
  • the circumference of this cord pulley 5 is designed such that a slide member 16, here in the form of a linear slide arm ymernber which is movable up and down along a guide or slide rail 9 through the intermediary of the pulley cord 5a and the guide rollers 7, 8, comes to rest beneath one of the rows l n of the chart 1 for each of the m possible conditions or positions of the output member 2.
  • the slide member 16 is shown formed as an arm which carries thereon an orderly arranged row of characters or markings, in this case an alphabetically arranged row of letters, whereby each such letter is always associated with one marking on the front face 1a of the chart 1, in this case a letter of the associated superimposed row of randomly arranged readable letters.
  • the apparat-us is advantageously actuated in such a manner that for each letter of the text the slide member 6 is'caused to assu-me one of its possible n positions. Thereafter, the relevant letter of the clear text is located on the slide member 16, and the letter lying directly opposite thereto on the front face 1a of the chart 1 then corresponds to the wanted letter for the secret or ciphered text. Naturally, for deciphering the reverse operation is undertaken in that, the letter of the ciphered or coded text is located along the relevant row of the chart 1 and the vassociated letter located therelbeneath on the slide member 16 then corresponds to the clear text letter.
  • each letter of the text for the Word please is located lalong the slide member 16 and the corresponding, oppositely situated coded letter is read-off row number 6.
  • the coded text for the word please is then qkzciz.
  • the coded text In order to decode the coded text first the letter q is located along the row 6 and the corresponding decoded letter p is then found on the slide member 6. The remaining letters o-f such text are then processed in like manner.
  • FIGURE la shows the rear face 1b of the chart 1.
  • the slide member 16 of FIGURE l may be provided at its rear side with a second spaced slide arm providing a similar slide member 16 which is then associated with the rear face 1b of said chart, thereby rendering it unnecessary to turn the chart over for decoding.
  • complementary row 6 of the rear face 1b of chart 1 has only applied thereto those complementary letters necessary to decode the aforementioned coded text qkzcz'z- .It will thus be appreciated that the letters of this coded text can, in this case, again be read directly from the orderly arranged letters on the slide member 16' and the corresponding decoded letters from the associated row 6 of the rear face 1b.
  • a slide member 16" can be provided with a reading or viewing window 10, as shown in the embodiment of FIGURE 2.
  • the driving or control arrangement is operatively connected with the slide member 16" such that the latter can assume two basic positions which differ from one anotherby one-half of a basic division of the chart 1', which then advantageously would also have complementary rows at the same side thereof, as previously shown in FIGURE lb.
  • Means for permitting displacement of the slide member 16" so that the window 10 will overlie one of the complementary rows of the alphabetic pairs is shown in this embodiment, by way of example, as incorporating a plug or pin 15 which is attached to the pulley cord Sa.
  • FIGURE lb the plug 15 is inserted in hole C for coding and in th'e lower hole D for decoding.
  • FIGURE 2 could also be employed with a chart designed as in FIGURES l and 1b.
  • the information carrier shown in the preceding embodiments in the form of a sheet or platelike table, could partake other configurations.
  • the chart 1 is depicted as a'scroll having applied thereto numerous suitable rows of indicia.
  • the chart 1" can be advanced from a pay-oft spool or roller 17 by means of a suitable advancing roller- 18 such that the relevant portion of the chart 1 exhibiting the desired group of rows appears between the aforesaid rollers 17 and 18.
  • This chart 1 can have the letters of the rows applied thereto as in any of the previous embodiments.
  • the chart 1" is configured as an endless band which travels about the spaced rollers 19 and 20, similar to an endless transport or transmission band.
  • FIGURE 5 there is illustrated a further variant of the invention.
  • the information carrier or chart 11 is rolled into the form of a cylinder, whereas the slide member 2.6 here possesses the form of a second external cylinder provided with a viewing window 10.
  • the cylindrical chart 11 is driven, while the external read-out slide member cylinder 26 is mounted so as to be capable of again assuming two basic positions which differ from one another by one-half a division of the chart 11, so as to be able to code or decode depending upon the relative position of the slide member 26 with respect to the inner cylindrical chart 11.
  • such inner cylindrical chart 11 is provided for each division of the aforesaid chart with one pair of complementary rows of alphabetic pairs.
  • Visual input-output device for coding and decoding comprising a chart member having a first series of substantially parallel rows of randomly arranged characters of a system of indicia and a second series of the same number of substantially parallel rows of said characters of the system of indicia, each of said rows of the second series having said characters arranged therein complementary to the random arrangement of the characters in a respective one of the rows in said first series, each of said rows of the second series further being disposed on said chart member in a predetermined positional relationship to t-he corresponding row of said rst series, slide means mounted for relative movement with respect to said chart member and having at least one row of orderly arranged characters of the system of indicia thereon disposed for cooperation with the characters of any desired row of said rst and second series during coding and decoding, respectively, and means for imparting relative movement between said chart member and said slide means for selectively placing said slide means into cooperable relation with a predetermined sequence of said rows of the first series during coding and with the same sequence of the
  • Visual input-output device for coding and decoding according to claim 1; wherein said relative movement .imparting means includes a coding mechanism provided with an output member capable 4of assuming a number of different output conditions, with each said different output condition effecting relative movement between said slide means and said chart member such that said slide means is automatically brought into cooperative relation -with a predetermined row of characters of said first series and said second series on said chart member during coding and decoding, respectively.
  • Visual input-output device for ⁇ coding and decoding according to claim 2, further including means cooperating with said chart member for bringing a selective group of said first and second series of rows of characters within the operating range of said slide means.
  • Visual input-output device for coding and decoding according to claim 8, further including means mounting said chart member in the configuration of a scroll.
  • Visual input-output device for coding and decoding according to claim 2; wherein said first and second series of rows of characters are on one surface of said chart member with each row of said second series being offset a predetermined distance from the -corresponding row of said first series, and further including means interposed between said output member of the coding mechanism and said slide means to vary the relative positions thereof for coding and decoding, respectively.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)
US309825A 1962-09-19 1963-09-18 Apparatus for coding and decoding Expired - Lifetime US3250020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1108562A CH409474A (de) 1962-09-19 1962-09-19 Chiffriertafel an einem mechanischen Chiffriergerät

Publications (1)

Publication Number Publication Date
US3250020A true US3250020A (en) 1966-05-10

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US309825A Expired - Lifetime US3250020A (en) 1962-09-19 1963-09-18 Apparatus for coding and decoding

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US (1) US3250020A (de)
AT (1) AT245293B (de)
CH (1) CH409474A (de)
GB (1) GB1034376A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000162A1 (en) * 1984-06-15 1986-01-03 Campbell Robert J An encoder/decoder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558527A (en) * 1982-04-27 1985-12-17 Helmut Schroedel Reading aid apparatus, especially a copyholder for typewriters
US5088217A (en) * 1991-05-17 1992-02-18 Cameron Canaday Line reader apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954033A (en) * 1930-02-24 1934-04-10 Customer Control Service Corp Customer control device
US2050919A (en) * 1929-05-02 1936-08-11 Brauer Ernst Ciphering machine
US2219255A (en) * 1938-10-03 1940-10-22 George A Koch Copyholder
US2803217A (en) * 1955-06-07 1957-08-20 Albert A Hudak Stenographic note positioning device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050919A (en) * 1929-05-02 1936-08-11 Brauer Ernst Ciphering machine
US1954033A (en) * 1930-02-24 1934-04-10 Customer Control Service Corp Customer control device
US2219255A (en) * 1938-10-03 1940-10-22 George A Koch Copyholder
US2803217A (en) * 1955-06-07 1957-08-20 Albert A Hudak Stenographic note positioning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000162A1 (en) * 1984-06-15 1986-01-03 Campbell Robert J An encoder/decoder

Also Published As

Publication number Publication date
AT245293B (de) 1966-02-25
CH409474A (de) 1966-03-15
GB1034376A (en) 1966-06-29

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