US1415106A - Ciphering device - Google Patents

Description

LQ F. MORKEHOUSE.

CIPHERNG DEVICE.

APPLICATION min :uw z3A .1920.

Patented May 9, 1922-.

INVENTOR i tothe fact that 'these stunt ysignals would nare L'YEAN TIQREHOUSE, i053' E'IIONTCLAB, NEVI JERSEY, .ASSEGNQR ."TO AMERICAN TELEPHONE AND 'TELEGRAH -Clll.., .EL GOBGRATXQN @E NEVI YORK.

CIFHEBING DEVCE.

Speciieation `of Letters Patent.

rasanten 'nay e, 192e.

Application filed July 23, 1.926. Serial No. 398,365.

Z 'o all whom t 'may concern,

Be it known that LYMN F. Monnrronsn, residing at Montclair, in the county of Essex and State of New Jersey, have invented certain lrnn'ovements in Ciphering Devices, of which the following is a specification.

'T his invention relates to improved printer arrangements for use with devices for enciphering and deciphering messages.

A well-known arrangement for encip'hering and deciphering messages is illustrated in the U. S. Patent No. 1,320,908, issued November el, 1919, to il. D. Parker. |This arrangement utilizes printing telegraph requipment and the enciphering is accomplished'by combining the code combinations of the original message with the code combinations of one or more cipher or key tapes, the resulting code combinations comprising the enciphered message. To decipher the code combinations of the enciphered message are combined yat the receiving station with the code combinations of key tapes identical to those utilized at the sending station, the resulting code` combinations representing `the characters of the original message. The enciphered message may be recorded on a perforated tape for transmission between stations or it may be desirable to record it in printed form for transmission.

(lne of the well-known codes utilized with arrangements of this .character is the Baudet code in which each character is represented by a combination of live marking or spacing i-nuiulses. A live-unit code of this character would have thirty-two Vcombinations of which twenty-six would be used to designate 'letters of .the alphabet and the remain-ing sii; would be usedras stunt signafs, i. e. to control v.the printer operations, such as line feet, carriage return, etc. in the aforementioned method of .preparing cipher messages these stunt signals would appeal.| ciphered message. as .the code combinations ort said message are the result of combining the-code combinations of the message tape with the 'key tapes. Accordingly, if an ordinary printer was utilized with the cipheringdevice to record the cipher message, theresult would be a badly confused message due occur at other than proper times and the printer ywould be operated thereby at .rindesirable times. Accordingly, it is `a general.

at irregular intervals in the en- '15 of a printer object of this invention to provide a printer which will not confuse the message :by operating in accordance with the stunt signals, but which will give a printed record of said signals. Other objects and features of the invention will appear' more fully 'from the detailed description hereinafter given.

in the printer arrangements of this invention there is provided a plurality of signal lamps. ll-Vhcnever a"stunt signal appears in kthe enciphered message, the printer will not operaie in the normal manner in accordance with the stunt signal, but will operate one of the signal lamps. A keyboard perforator is also provided by whieh'the operator, whenever one of the signal lamps indicates that a certain stunt signal is .:ccurring in the enciphered message, may introduce a combination of two characters into the printed record of the message to indieate the stunt signals. These two character combinations for representing the stunt signals are picked from an arbitrarily chosen code, which for the purposes of this invention is as follows, although other such codes might be utilized.

Se. represents letter S,

SB represents line feed,

SC represents space,

SD represents carriage return,

SE represents letter shift,

Si? represents figure,

nu represents blank.

The invention may be more lfully under stood from the follmving description together with the accompanying drawing in which is illustrated a .preferred form of the invention. ln the drawing there is illus-- trated the message transmitter and the transmitters B and for the cipher or key tapes. The code combinations of the message tape are combined with the code combina tions of the two cipher tapes by means of the cipher relays 6. .7, 8, 9 and 10 Aand the resulting code combinations representing the charaeters of the enciphered message .are set up on the selecting` relays 1, 2, 3, 4t and 5. this ciphering method fully described in the aforementioned patent to R. D. Parker no further description thereof will be given. The selecting relays 1,12, 3, 4L' and 5 control the selecting magnets 11, 12, 13, 14 and D. The printer D is of a type well-known in the art, which, for in .the Patent No.

example, is disclosedv 1,215,604 granted February 13, 1917, to Gl. M. Yorke, and Vincludes stunt contacts 16, 17, 18, 19, 20 and 21 which represent ilgures, letters, carriage return, space, line ieed and the letter S respectively. Y These stunt contac-ts control the relays 22,23, 24, 25, 26 and 27 which relays in turn control the signal lamps 28, 29, 30, 31, 32 and 33 respectively. lVlienever a. code combination representing a stunt signal or the letter S is set up on the selecting magnets 11, 12, 13, 14 and 150i? the printer, one of these stunt contacts willv operate and light the corresponding signal lamp as Will be pointed out later. he printer l) also includes the usual type ot' printing relay 39, clear-out relay 40, release magnets 41, start relay 42 and start magnet 43. There is also provided a printing' magnet and type shaft 45, stop bars such 46 and space magnet 47 and a space lock relay 48. There also provided the carriage restore key lQ, carriage contacts 51, the carriage return magnet 49 and the line feed magnet 50. Tivo additional signal lamps 37 and 35 are pro-- vided, lamp 37` being controlled by the mar` gin relay 3G and margin contat-..11 38 and lamp 35 being controlled by the blank relay ln order to cause the printer' to give a two-character printed indication ol the stunt signals set lup on the selecting magnets, there is provided the keyboard transmitter E Which includes the selecting contacts G1, 62, 63, 04 and 65, the common keyboard contacts 65, the keyboard relay 67, the keyboard magnets 68 and the locking` contacts 69. Associated With the selecting relays is the release control rela 52. The release key K, is Yalso provided or controlling the stunt relay 59. The stunt relay is ,associated with the transmitter control relayv 58 which in turn is associated With a distributor which is proif'lded for .nu g the sequence ol operation oi: the arrangements. Associated with the distributor is a start key K: and starting magnet 57 Yand the start control relay 60. ciated with tl P. transmitters B and C is the cipher cut-oil key K3 Which, When operated. allows the. message tape to be recorded in unencipherefl form.

rlhe operation of the arrangements of the invention is as follows. The code combinations representing the characters in the two key tapes will be set up on the cipher relaj` s 6, 7, 8, 9 and 10 and will be combined with a code combination or' the message tape to up on the selecting relays 1` 2l 3, 4 and 5, a code combination representingT a character or the enriphered message. The selecting relays will setup this same code combination on the printer selecting magnets 11, 12,13, 14 and 15 and .villralso operated the release control relay 52. Then the starting switch. l, is operated the distrliutor starting magnet 57 Will operate and will release the brush ground.

arm of the distributor 53. l/Vhen the brush crosses segment 5.4 Vthe printing relay 39 Will be operated over a circuit through the iront contact or the release control relay 'ille printingrelay 39 will lock itself and start the operation ot the printer in the usual Well-known manner. 1f the combination set up on the'selecting magnets is not a stunt signal (or the letter S) the printer will print, space and clear out in Vthe normal manner. When the brush crosses segment the magnets of the tapetransmitters B ant C will be operated and the message and key tapes Will be stepped ahead. lll/hen the brush passes oil of segment 55 the tape transmitter magnets will be released thus setting up on the selecting relays 1, 2, 3, 4 and and the selecting magnets 11, 12, 13, 14, and 15 the codecombination representing the next character or' the enciphered message. i These voperations will be repeated as long the brush continues to rotate.

The operation of the circuit arrangements Whenever a Vstunt signal or the letter S is set up on the selecting' magnets will now be described. lt is pointed out that in the arbitrarily'chosen code for giving a two character printed indication of the stunt signals the letter S has been chosen as the first of the two letters to represent each stunt signal. Accordingly the stunt contacts 16, 17, 18, 19 and 20 in the printer' including the contact 21 operated by the letter S signal, have been Wired so that each stunt contact operates a sell locking relay such as the relays 22, 23, 24, 25, 26 and 27, Which relays in turn when operated, will light the signal lamps 28, 29, 30, Y 31, 32 and 33.' Vhen the brush crosses segment-.54 of the distributor the printing relay 39 will be mperated and thisrivill operate the release magnets'tl.V lVhen the release magnets 41 operate, the stunt contacts will close, thus operating the corresponding relay suchas the one of the relays 22, 23, 24, 25, 25'and 27 in series with the clear out relay 40. IThe circuit-for relay 40 would be as follows: from ground, Winding of relay 40, conductors 102 and 101, upper Winding of one of the relays, such as 22,123, 24, 25er 26, through one set of the stunt contacts, such as 16, 17, 18, 19 or 20, to battery and rl`he circuit tor relay 40 might also be completed as follows: from ground, Windot relay 40, conductors 102 and 101, upper Winding or' relay 27, contacts 21, conductor 103, Contact 69 to battery and ground. |lhe clear out,V relay 40 will release the printing relay 39 and the release magnets 41 before the starting relay 42 and the start maglt would furthermore take a certain aiznount of time tor the type shaft 45 to complete this operation. The relay which was operated by one of the stunt contacts will lock itselt and light its corresponding lamp such as one of the lamps 28, 29, 30, 61, and 33 and this will also close a circuit" for operating the stunt relay 59.

VVhen the brush crosses segnien't 55 the tape transmitter magnets Will be operated. in the usual manner. When the brush crosses segment. 56 a. circuit will be closed `lrom ground through the brush, segment 56, lefthand Winding et the transx'nitter control relay 58, lett-handfront contact olf stunt relay 59 and right-hand Winding ot the keyboard relay 67 to battery and ground. This Will operate the transmitter control relay 5S and the keyboard relay 67. The operation or the keyboard relay 67 will have yno effect at this time. The transmitter control relay 58 will lock itself and disconnect battery from the distributor' starting magnet 57 and also from the stepping magnet-s ot the tape transmitters and trom the lett-hand bus-bar of ythe message transmitter .er andthe lront contacts ot the cipher relays 6, 7, 8, 9 and 10. Ilhis will release the distributor starting magnet 57and stop the brush arm from 30.

further rotation. lt will also prevent the operation ot the stepping n agnets otv the tape transmitters andv Will release the electing relays l, 2, 3, 4 and 5 and the selecting magnets l1, 12, 13, 14 and 15.

After this occurs the operator will depress the key lirst in the keyboard transmitter 'tor the letter t3 and will later depress the key on the keyboard transmitter 'for the letter indicated by the signal lamp lighted one of the stunt contacts. YWhen ot the keyboard transmitter is depressed by the operator, the corresponding combination will be selected and set up onthe keyboard selecting` contacts 6l, 62, 63, 64 and 65 and the common l-:eyboard contacts 66 vill be closed. The common keyboard contacts66 will close a contact for operating the keyboard magnets 68. Thekeyboard magnets 66 Will lociV in the combination set up on the selecti contacts 6l to 65 inclusive andy will vlock itsell. 't irough the locking contacts 69. rlhe selecting contacts will set up the corresponding eoi-nbination on the selecting relays l, 2, 3 4 and 5 and these in turn will op rate the coi-respondine,v selecting magnets ll, l2, lll, 14 andv l5 of the printer' l). il circuit will be closed 'from battery through the common keyboard contacts 66 and also trom battery through the looking contacts 69 and right-hand back Contact of the keyboard relay 67 and through the Winding of the start control relay to ground. This Will operate the start control relav 60, which in turn will operate the distributor starting magnet 57 and allow the brush arm of the diL trilaitor tne brush z' i relay 39 rt rotating again. lllhen ent the printboard rela y The'keyboard relay 6l' on "vil open the previously closed le start control relay 6() and Will release the reyboard magnets 68.

When the operator depresses the key ot ie keyboard transmitter Ytor the second of ietwe letters representing the stunt signal, 'iese operations Will be repeated and the printer will record the second letter.

The stunt contacts 2l which are operated by the letter S signal, are connected to battery through a back contact 69 in the keyboa d. lt has been previously pointed out that when a letter t5 signal is set up on the selecting magnets as a result ot a combina-- tion ot characters inthe three tape transn'ritters, the letter S will not be'recorded on the printer but the corresponding stunt signal lamp Will be lighted instead. This is due to the operation oi the clear-out relay 4l) over the ti contacts 21, over a circuit from ground and battery, Contact 69, conductor contacts 2l, Winding or relay 27, con- `uctors 101 and 162, Winding of relay 40 to round. The cl' tr-outvrelay 40 Will release 'ninting relay 69 and the release magnets l elio` e the starting relay 42 and the start net hare operated to release the type 4o, and therefore no character will be c However, When c ral is transmitted 'trom 4'the t feo E, the previously traced circuit tori-clay 40 will vbe opened at contact 69, and the clear-out relay will not operate to inter- 'e With the ordinary operation of the pr inter, which will accordingly print the letterl in the normal manner.

litter recording thel tivo letters representing the stunt signal, the release key K, is depressed by the operator. This opens the circuit for and thereby releases any one oic the stunt relays 22, 23, 24, 25, 26 and 2'4" which have been operated and this restores the circuit to normal. rThe printer Will then continueto record the code combinations set p on the selecting relays.

lWhen the carriage has reached the end of a line the margin contacts 88 will be closed thereby closing a circuit through the upper Winding of the margin relay 36 to battery and operating said relay. The operation of a... M N ,y

ted and this will' act et stint relay 59 to operate the lel relay 36 closes a circuit from ground, la ment or the signal lamp 37,- loWer Winding oi relay 36, contact-and armature of relay 35, Winding of stunt relay 59, to battery, thereby operating' lamp 37 and stunt relay 59. The operation of lamp 37 Will inform the operator tl at the carriage has reached the end of the line and accordingly lthe operator will depress the carriage return key KT This Will operate the carriage return agnet i9 and the line feed magnet 50 and thereby restore the carriage and feed up the pa per. The operation of relay 59 will cause relay 58 to operate when the brush of the distributor' crosses segment 56. The opera'- tion of relay 58 will in the same manner as preriously pointed out prevent the arrangements from operating While the operation of returning the carriage is taking place. The release lrey FQ, may then be operated and the signal lamp 37 extinguished and the circuit re red to normalagain.

lVhile the invention'has been disclosed in certain specific arrangements which have been deemed desirable, it is understood that it is capable of embodiment in many and widely varied terms Without departing from the scope of the invention as defined in the appended claims.

-`What is claimed is:V

l. AY plurality of selecting means upon which may he automatically set up code combinations representing Vmessage characters and stunt signals, a printer associated with said selecting means and adapted to give a printed indication of said message characters and a visual indication of said stunt signals, means operating Whenever said printer gives a visual indication of saidV stunt signalsior stopping the operation oit said printer, and manually operable meansY associated with said :printer for operating said printer.V e

2. A plurality of selecting means V-upon which may be set up' thefcode combinations of message tapes, said code combinations representing message characters and stunt signals, a printer associated with said selecting means and adapted to give a printed indication of said message characters and a visuall indication of said stunt signals,

Ameans operating Whenever said printer gives a visual indication of said stunt signals for stopping the operation of said printer and for releasing said selecting means, and manually operable means associated with 3. A plurality of selecting relays uponv which maybe automatically set up code ,combinations representing message charac ters and stunt signals, a printer associated with said selecting relays and adapted to give a printed indication of the code com binations representing message characters, a plurality of stunt contacts in said printer operating Whenever the code conibinations krepresent stunt signals, a plu` rality of relays and signal lamps controlled by said stunt contacts, means controlled by said last mentioned relays when operated for stopping the operation of said printer and for releasing said selecting relays, and manually operable means associated with said printer `for setting up code combinations on said selecting relays and operating said printer.

4; Y plurality of selecting means upon which may be automatically set up code combinations representing characters of a plurality of groups, a printer associated with said selecting means and adapted to Ygive a printed indication of the Vcharacters of one of said groups vand a visual indication of the characters of another of said groups, means operating Whenever said printer gives a visual indication of said characters for stop ping the operation o1 said printer, and manually operable means associated with said printer for setting up code combinations on said selecting means and itor starting said printer in operation.

5. ln a ciphering device in Which the codel combinations of amessage are combined in. effect with thecode combinations ol" aV key tape and thev resulting code combinations forming the ciphered message are' utilized Y to control a printer, the method of eliminating certain signals from the printed forni of thev ciphered message which consists in automatically stopping the operation of said printer. Whenever the resulting code combination represents one of said signals, manually substituting another code combination for said resulting codeV combination Which represents said signal, and starting said printer in operation again.

ln testimony whereof, l have signed my name to this specification this 9th day ot July, i920.

s LYMAN F. MonEHoUsF.

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