REF ID:A272917 

I claim 1 -

a ctpher-tq t:ramrmittor; and me ns ooordinated with '\be trantaittttr w erteot 

peramtati"f8, atepriee diaplacementB of the Ccmll\lt&tOl"Se 

'Un eleatrical conneo'tiion wi 1;h oorreeponding signaling a1 ... n·bs •ftll• oomprlsing a aet of .)uxtapo•ed, rotatable C019111.Lta~or• tor -.al'Ji:ng the oonnactlan• 

'MWtlen the k87'board ele1:ients ·and ea1d •1gnallng •l••11ta1 a ciphar-ke7 traual tter •ohani•a and mean• ooortU.na·Ung •14 achani• w1'11 the o-.tatori 

to etteot pel"ll'.la.W..tlw, •'b'PW1H diaplaceranta of the oanm.a ..... .. ·· 

3. In P. csrypt0t:rn.t>h, ,., :·.o;.tboci.r•l CO!'l!lTlirhlf~ c!1111.rf\Oter ulerumts in operaprillng a. 1et of Juxta.poeed., rot&:table oOllll!IU.tator• tor Tar~i.ng the conneot iou 

between the kaiboard elewnta and mid airm.J.ing elelllHntaa a alphar-by tran .. 

altter •ohantm; And a aeries ot co-.tator atepplnc •chRn1••• the ciphering ~ eat ot ,JuxtApoeed, rotat~ble oommutatora for Taryf.Dg the aonnactton1 'betwen the k9¥board ele1118nts and said signaling eleraenta1 a plurall'tT ot cipherke7 tranmaitters; P.Jt<1 muan• coordinating aa1d tran.llllllttere to et"teo'l ptt!SlU.tlw, 

1tepwi•• dill}:>ln.cemm·tfl ot the 0011111Ntatora. 

@'pproved for Release by NSA on 09-13-2013 pursuantto E.O. 1352e 
REF ID:A272917 

opera,iw al•o'•iaal comwction •i'h oorr4HJM>n~ing 11gna.l.tng eleMn,e; mean• 

ooaprf.•1118' a .. , ot Jutapoee41 1'0•'\able o~•tor• tor "fU71nfr h o..,. 

neoUon• be'9een '\he IPA•lloard elel"lf.ln'\s 11.nd 1v.1 !4 tJir.n&llnr elemn'\•1 "' plur- ft4."'"' ... .., '.t 

..' all'1 ot ctpher-k97 tr&11811llttur•1 a series ot oa..atator •t8PPlftl'.ll80b&n1 ... , I ..... ~ ..,... -----·~" ~. ,, .. ~.~ .. -;;.,....,,,J,~-4"' ~V· (If.<'~ '·"1'·~,,.. ,_. ct-...t 1,t..P.~ jJ.a --

(,, eaoh OOM!>1"1 dtlft' ·a lllllftJltl\· Nl4 ,.•••oc ia'\11d. ratohe't end »&•1111- 'Ule PIO'. Of o_.__ 

\or •'te"PP1n« lll8Chan.181le bainf'-' nontrolled b7 .the •Aid 01pi.r-te1 trtUllll11ter• 

&HoaS.ated As a grOtJp and ooord1no.1:ttd. oollect1Yel.7 w efteot JarmtatlW1 

•~_,.1 .. dimpla08Jll9nt• ot tn. OOlllU.tatora. 

op1rattw •l•otr1cal Com18CUon wt-.JJ OOJ"Nll>OUding -~..gnalilllJ' •l8118U1Ull ..... 

• 

oomprh inB a •' of Jwc'\apoaed.. ro'\P1.tal)le OOll!ftl't&"o:r• tor •r.vtn« tm oonuo111 one lttlween the ke:,.board. eler.19n'\e nnd. P.•' 14 s~llng · elel!lent11s a. c ipller-

'1. In " or;;vptograph, n. ft1board. OOPIPl'1einfr oharanter elemnt• la 

op•ra'\1'" el.,tr ical oonneo\1on with norN.,ondiJW a&cnallrag •lt1Mn1ia1 _.. 

compr1•batr a "' ot JuxapoMd. ro\a:ta'ble ,,_.tator• tor ftl7Slrs \he oon-

:naoUon• laewMn ,._ keJbol!L\"4 •l ... nt1 an4 aaicl •iSn&l11?B' •1-nt•a a pl.-

•11 '1' ot oipber-a1 tran•l "ti'9r•1 Uld .._. aoorclinatlnc tba tranmt "'8r• to 

etteat perrm:taUvu, e'Mpw1H 41irpluemante of 'tbe o~ttator•. -U. tran911'9 

ter• bei1lf; controlled "b7 .-parn.te DyiltB elMttnt• which ar• nwrml to an4 
REF ID:A272917 

operati"VW electrical oonnect1on w1'1l correapond.1.ng eignalln« eleaen~•I 

a ciphe~key 'transmitter B•·,chani111; and •&11• ooord.1na'1ng eaid aeohan1• 

commte,tore, 'he cipher-ke1 trAn&m1. tter J!SeChf\111• 'batng controlled. by. a 

"11• 

ke7tng eleaen• which ie ex,ernal to and inde:pendcmt ct'/a17J>tograph, and. 

which in.elude• a pertorated '"'P8 bea.ril'lff perforA+-iona -pert11Uted tn accor4aao• 

9. In n. cryptofrTn.ph, "' keyboard comp~ili 1ng character element• in 

a 'Plural1t1 of oipber-k•J trl'\llmdt._ers1 &nd. •nne coordinating '\he tranmi'i• 

ter• to etfeat pel"lll\1";at1 ,.., •t8P"iH 4iaplaceman'• of tho 009lllta1lor1, "1le 

said tra.n•Utera being controlled ~ separate keying el~ment• whioh aN 

external to and b.clependent ot the orm>tograph,, Rmi which inolwle pertor&ted. 

tap .. Maring perto:ra.Uone penP:ltad in l!l.Ooordanoe wUh a plu~l-vn1t code to 

10. ln a oryp'\Of,'raph, k ke1laon.rd OOlllJ>r1e inc oharacwr el81ll8nt1 1a 

e>pel'aUw elea'\rical oonneailon with oorreeponding 91gnall:n« ele•nte1 .an• 

&111~ ot c1pher-ke1 "ranmitters1 and l!ll8M8 CO()rdina.ting the tJ•a.n•dtter• 

\o effect penmtaUve, etepwhe diepla.ee:'lonte of 'ihe COIBU'tn.tore, 'h• aa14 
REF ID:A272917 

external to and 1ndepe1\lient of '\he C17P'toSra:ph1 and which inolude pertorate4 tap ea beal"1ng perf'oratioue permuted in accordance with a pluralunit code to represen'\ character• 1n '\hat ooda, the mabere ot 8UOh charactere in t!·,o reepec:U ve trtpes being print.a to one another. 

'!;/' 11. ln a OJ'7PtoB!"aph of' the cbaract•r 4eeori bed, the 0011bbiation ot a 

12. In a cr,JPtograph ot \he charaoter described, the ooabination ot 

a Ht ot Juxtapoaed. rota.ta·na o011111UutorsJ a nt of o C1111JJ11tator et•pping 

.'~ 13. In a orntograpb ot the character de9Cr1bed, the ooab1nation .. · ~-·· ~ ~·. ·;.· 

ot a Ht of juxtapoaed, rotat&ble aonmm.tatore1 a .. , of commutator 1tepping 

14-. In a oryptograph or the ohArRcter detiler:!.bed, tho cot1bintt.'Uon 

of a eet of JuxtapoHd, rotRtable conwu.tatorss e. Bet of cOll'llU.ta. tor steppilllf 

me0Mlli•a1 and a pluralit)· of plural-untt-ood.e cipher-ke)' tranrnUtera 

·.?--··· 

ping mechaniame to affect p1u•mutR.'U -.e, stepwS..e diisplnouaenile ot 'the oomntator•• 

16. !n a oryptograph ot the character descrilJed. 1 the combination Of. 

tetboarcl element• and etgna.11ng elemen1ut1 & ••" of J1uc":.apoaed, rotata'ltl• 

c~atore tor vn..r~:ing the oonnectione between the two sets of' el&MT•t•; 

a Hriea ot 001111utator Rteppi11f: raeeha.ni!We for dieplactns the reapeoUw 

tor con'\rollt:n,~ the aonamutt\tor stepp1r1r mechan1811la to et'tect '\he a'8pw1•• 

displacement• Of '\he commuta:'lore in .. permu'ta·U" •mwr. 
, ... .• .. r . 

. . • '~· . '. . . 

REF ID :A272» 7 

• 

,"/ • i • ' 

. '. '_16. .. Ii 

.-

__ .-~~-~ .. :. ··:J. ,· ·• ·.<·:. \. -~~:·· - . ::-4'·' ... --~:.~~--"'~~···~··~·~- '\·:' . . . ' . ·. . ·/, ./ ·:.. •·. ' · .. , 

•f·IHQ•_.,a,l 

- . . 

..... . . tl ·~:·,' ..C;••••lf.118:.'11-at .·-:-·.·~··· ;_ ""·. ·,~· .. .. a •'·Of 

. 

Ja .... 

, ,,, ~;_·~::;-,""· 

111.-~ ... ·- ,' .... ~ 

• '": .• , . . . ' ~;·,. ,• .. ':.:. ·... •• ' • _... '.- • ,, . •.•. '' • : ' :.;· t -'.""' • 

:.:.-.. ·--·'-'· fO.., .-.,lJW .... Oomato~i'8a ..... 1111 .•. .,.,., ..,._ 

·-·-~t·-····.-,·.01'·· ,f;:~•'-r·•*•1lac•·-1 .. te.~lbJ>.~~:'~~ .. ~ .. --~ 

1 .. I '· 

f 

~ 

'. ' .· ···< .-·~· .:. __ :· ·~ ·;:;..' ''·• ;. i -~ :·;··:··~ '>, , : ··~ , . '.t~:. . ·~··:··· ~ · .. ·:;~:: -:;"·· . .:: ' \, 

•• 7 r•t,;w• .... • ..... 1 .. ~i .• a 11'"'11.tJ '"'" ~ ......... ~ .... ····~ , ·.' ,,,_~ .... '\ :~~ ' 'E ' ,~ ' ,~·,.,.•' ~., '• ~t~l ,_'', 'J,~s,: ', :; ,.._ ,•~ "~· 

........... , .... t•·•li.•-.~ o.WOlllaif· t11iilt11rllrl.llwr'.' ....... .... 

. <·~.i;~ ..,,.., ......... 41•1*1•••••••1 .,·, .. iJ·,,._ ... ~' .. S. ..... ; ....... \:. \ l • •. •' . . .· .·• • . • . .· • ' "' !• • ' .. ~' :::, .. •. . :· . < • • \ -··; ''• . 

i.' . 

;.' ,_ 
REF ID:A272917 

20. A mecball1• of the chvao\ar da•crtbed, ooi11Prhing a eat ot 

•1~1:1'•, o~n.nl"1Un«, ~ ke7b~~ •. eet. ~t ~~·1~t.• c~ntt11'ln« ·a •18'-

'~~~.'.."~.~·;.u;:~=:~:~;,~~(::;(;:;"dm.na ror ._ 

1• • eo1111ee,1one l>e..,tten .,. 1ln •ii• rW el-.ntsa llMn• fflr etteouns 

. ..,.IM: «ll!Pl&ee>ment8 of tbe Di tchl:ng 4e'Wicee ii'l M a'J)ertod!G l!INDtfl!'9 tbl 

etepwtte 41-~lae_.,. of the •t of •t'ahln« ctnten be1118' Perll\ita'ttw bl 

oha't9.&tel', 'the pttl'llftlta:Uone ot sn.td dhpl&O..,ma lMinr, d.etel"ldntf4 .,,, ·.n 

21. A meohanlm ot tbe charaohr described, compr.idng a set of 

ele~n~• ooneU t~ttng a keybo~rd.) 'llftCl a set of el«men ts conflti tuU.llfr a 9'.r,-

; ~~ \.M.h• :\. ... ",. " .. xr,~~ ~"'""·~*" .,. ..... ~ )>0-wu..,.. p.-c..ue\. p.J..l.. ~ e .. 4 ... ~ .... ~ n&liJ'IP' lMt.nk:J .. it •t Of' .,,1Xtl\'J'Oll9411 !'Dt@t.ta1>1e ftitchi\llg de'fi.cee foi- ~~izl« 

I\ 

tlle eomtantonw "be"'"8n t!Mt two •t• of e1enent•J •art• :tor er:reo111ng •tep-

•1• ·419'1~·'8 ot the nt~l!'!r,' de-Yf.eee in n.n R.}>ertodin MN\ftr, the diePlli.e9"11tnttt of' ,,_ M't ot ewttehing dencee 'being pe:rrctr.tl.,. tn charae•;err 

af\4 ~•· ~OMT»r! !!1'.nf~ "'"- extel'ftal key· for 411tflralnf.ng th• pel'ldUt&tiona of 

. p. .. 0 .( t ... ,,, ~.~ .. ·. : Q-4it, . l·::" ~· ... 'l . 

e&tt· 411!11'1fllC9ften~•. said ke~ eomprt l"tnr; a11 non-repen.Unr !'tile<fnenoe'> ot Ci"Pl!er'-

1 lBB o'haru'9n arl'ft.ftr,94 tn randm, unintallift!bl~ n?"d~·\ ! -._~-) ··~"":;:~ __ ;:'.,..~ ~:~~· 4IL $..•.;1.f-':"l'iL•·······... ....'>'\·'-v..,"t- . . .. " • ... .. -u .·· t~l'i~ ~- ._, ... .,,..A 

2?.. .~. •1eC?.'vmitt:"l of the cr.£..racter desartbed, co;1prisi11e· a eet oi' 

•l•JD}m'\• .~in~~ititting, s~ k~y'bofl.~d ~~ a"~-~~ ~r .. ~1,~~~'-~ ~on11t1tuttng a •i«- t1.lo...r;. ...... '· ,I!-.... •· lll~ ~- ~ \ ...... μ._ •.• 'l.d_~ •• '·' ' . ,•y. . • 

al.in« ba.nlq" a Ht of Juxt~poeed, rotatable aiw1 tohinr devices tor var)'ing 

the oonnettUona lMttween the two 1et11 of elententfl; MMB tor eftecttna etep.. 

wJ• •tlP1MMft!ltt ot the ewttchi~ devtc•s tn an aperio41c manner, the a1 ... 

pla.,....rrt• ot the ·"t ()f ""~tchtne dev~.oee bdng permuta'\ive 1n oh"n.cterr· ~ i;.". 

mean• e~l"i•ittp,." n.n ntern~l key tor detom1ning the perrm.taUoiil of" ea14 41 ... 

S:.J.-.i.i:..;.;. .. 14.) ~c.1·.j._~ .... 

b plaearnen,•, nitl k•1 co!'!J)ridng a,.,non-rapen.t1ng(eeqttenca\ot ctphertnr cliarao1ier• 

&l'l'&ft«84 ta t"an4or1, .,.aintelllgf.ble order, And the eatd olphering charaoter1 lie-
l , • REF' ID :A272fi7 

' ' ' 

.· II. A ..... ,. ot the tl)aaraoter d91ftllte4. ~~l•tnc a Dt . ot 

. . ~. . ' . . . ' '·--.. el ... n\• oonnltuttJ:tB a kq"8.r4 and a••• or •1_.'9 ._'1tdln8 • 

' ·~~cK~~~ ~~·~tA,,:.Ja,~;. ' 

•4-l&w.1'a*1f\a -' °'' ~-• .-.-•~ ~~- !leY!•• row 

ftl71DC e.. -.n•tlqn1 ... -. • .-· \he - •t•. of e~t•f ....... tn et• 

,....., ...,.,, ... u•1u••-'• ot ti. lritDMnC ... ~ •. ~ • euloU• · . ·. ~ .. -· -. ·. . . , •' ' . . ' . ·, . ' - ,, " . 

, " 

,w, •. ._ cU.•1•-·•·· ot . ._ .... t ot. awl'tcih1n. •nae• 1'11SIW~-.. 

. - tt.w lll ~r1 an4 --· ocmpr~•ias • --, •. ·.r··1 .... ~ .,· '; .· ~ ' "··'' ·. 

'f ldll'd1Jll -~l~•) , .... cte .. J!dd.l,.-.·......:-.~1,.._..- ~ •. 41 .. -~ .,_ ,, ·>;.f..i•:p:.)_~~. 

-· ', ··.;·.-·,, __ , \~ < 

. '-~-;· . 

-· .. - -~· , -·_,, ~ 

.. ... - . . ,. : . ' - ·. . ..· --~ .-_ .. ~~,_~·:\~t·: ''1: ' ., . . 

· ·•·· A ••Ntu:ma ot \bl. ~lum¥Jteit te•111~, ~1.s• • •• or _r •. '. ~· ·, -·.. _' "I!-~--- .1'. .>. i ,' _,,_ ' . _: . .'. - : ' , - .. · . • . -.-· ' . . · ... ' . ' ; . ·. ; .. ': . . ' ; ". 

a~~t~i-:u.s::· .. · :,· .. .;.- ; . . . . ....... - \ .... 

---,._ .... ,\ ........ ,.... .,.. - •t- ot .~ .......... ,.t ., .. - . '~. ": . ·' "' ·. ~ ·] . . ;· . . . . " . ' . . :'~ - . . 

t~ts··-~..,,,. tlt.1Plao~'· ot,.tlMl:·-.tt.tng·u•i.-; 1'1 •·--~o 

•' . ,-...~~·.; ~l~l-~t• ot .-. nt oi ~1,~bW···~•• )e~ ~l"m~~- ·. ~. . ~l '~ ~ J" l v ~ . ~ ' . .. . • 

s.~.••nt-.,'9•1 w ..... ...,.l•lne a pbraUtJ ot ~nc1eft't llllt latttilw ·_:.. . '_ :~<· .:-··,~-- ·!. • '_J·;·· .... _:· ' - . ·. _.· ' ., \ ··~~\:·:f: ~: ,. . . -.· ·.. -_ -

-aetbt -~ kep to~ ·4e,el'll11llitr the plft,lllta'1~'0(.,·•l•.4f~a••• ·:. ;:· : : .:, . ~ -._. .. - . . . ·-. . . . '·"( - . ~~~"r:_ :.. (· ~;_.· ---~"-·~ -._ . .:~ .. _... - --.. ! . . , 

... , ot •ltl _,.. ~t•lnc a aon-..,..u.a, ..._.. .- oJ.~ .. o--..t.1"9 . . - .. - ' ' - . ' - ' . ~ . ;·:' ·. .--·-;.~~~.;:-1·- "·_ • ' - ·. ..: . "), ·: . · •. • . • 

: '·· .::, 

··~ '.1, ........ o~ • o~•r Ae91q#.b11j~ ....... t•$nf)l·'.et·ot ·' . '\ • ••• • .- .• "' i.- . • • ,' ·:· ~--;~· • ._> .. .,>.._, .. ~·-~'::·~ r _,_ :·-°'··; ·. ~ ~--~'. :'.~ _.::·.,~ '. .:: 

·.•· ··~~~~~~~:~··-·~··.·' .• 1 ...... , ......... 1h"tlng • .. ..,.-.... • ..• _, '•t.·~.' .. ~· ... ~ ... ·,.t.g .. .... ,· 

•. ' . .:lSitf,'-*i~• : " .· ~ . " - . •t 

·, 

Of~,· ., ' ro'••ltl•·~,O~:·•~• ,· .. : . : -' ·'' .. ·fr '",: .. ~ :~·"'- : •':i:: ',•, . ; ;: . f~.~- : . ,,.. .... · - . ' 

:-.-• ....,,,._ • ._.. tm t.a ut• or eiem.n,., ~· to~ «fM~Siw • .,_ ' .·• I . _· • . • ' ,' -'. '._ .' c<,"';I.-·: _;~~;~~>- '~.... "'<:·· ·~...: .. '·: .·· .. - . 

.. ·"" ... ti•laol,tnt• of, - •ltolalJtC 4ttYS.0.I ·:'- ;~~-;·~--~ .......... &'•~ ~-

41Ql-....a'9 'ot ti..•\ or •1~1ns dnMe,a .. .;1..(~,._til~t~ ··~1 

· ·· _. •••• ~•l•Jnr a plura,lit1 ~t ~~-~1~.~tl• •'-~ . .P' • . •. ' ·• '· '' . . - . . .. '· ·•.·:· ·!-~ _, _:.;_. : ' ·-, . • . ' • ' • 

>_,;':· _·:·.:· .• •· 

~· ,, 

.:- ' 

,/ 
REF ID:A272917 

tor cletendning thf:J perrmta:Uon• of unid dieplacemente, eaoh ot said ke7e 

compritirig a no1i-repea.ting eequence ot ciphving nlu1.n1.cters arranged. S.n 

random, unintalliglble ordor, rs.n4 the lnteraot1on of the sa~d ~y• prod'\XS• 

ing a resu.l t!'IJ\t eingle key oone1ating ot an unintt1tll16'1ble seq,~ of 

oharactere which aerfil as the cipher. key to enoiphor th<~ 9uocerndv.e oharof em~~nhering which ooneiats in cont:tnuo1tsly "rnryinf" the cipher re8'tl 1Nlt 

ot e gi v~n plRin-t<.txt nharn.c ·•ttr by externally and nperiorlic8ll7 con11rol11JJS 

the di1:Plf\ce1oonte ;)f said ,.~ne devices parr.Altnt.1 wly Md in a. utttP- · 

•i•~r. 

aoter i• eaU.bliehed and a ae'\ ot Juxtapoaad. rotatable IWi "°hillB d.eTice• 

operati"8l7 interpo .. 4 be~een 11&1d elemente, all coordin&~ed tor operation 

.-., ..the control of a ctpher-1te1 tni.nem1,ter; the method ot enoipherinc 

which con•if!ltrt in continuously w.eying '\he cipher reeultant ot a ttiwn plain . 

:f 

test cbaraoter 111 ax'Sernally Nl4 apertoalcally oontrolling the 4i8Plau•Jll8ntl• 

ot eaicl ni 'tehlne deTio•• peniu•u ftl)' "'nd in a. s'8pwiae manner, tlle 11tep 

according to an unintelligible, ra11dona · Hqwmce ot k4t'¥1n« ohlt.rMJWl'le 
REF ID:A272917 

28. In a cryptO£ra'Ph1c 91t11tea ..-plo7ing an •l-nt 11POl.l wh1oh a 

plala-"•x' character 1• ••\alJllehed, an •1-l'li U)'>on whloh a o tphar cbaraater 

i• ••talal1•he4, And ,. eat or Jux-.apoaed., ro'\atabl• •1 :tohlltl' ••ta•• opera.-

ti wl7 iaterpo11ed. 'be..,,.•n eald eleMB11e, all ooor41naud tor OP9rf. tion un4er 

the oon,rol or a pluraU'ty or elecvlaallj' tnteraou.nc clpber-ke1 tren•lt-

·'8r•1 ~he JMthod or eno1pher1nt~ which oon111st111 1n nonU.nuoual7 'ft.eying tha 

cipher resul -taat of n. e;i ven plaiu-text ChRracter, b~ e.rternal'.11' and. apar1od1oall1 oontrolling the displacenente ot Mid IWt•ohllll deTtoea, penm'MUwl1 and in a step-wi• mnner • tile •'81> or external. control in't'Ol•lac 

the operaUon of the ind1T1d•l alpher-k•J tran•nd.ttera acaord.tng to napeettw, 

111d1delllB1lal• rAIMl• •qunoea ot keylns abaraoter•• 

2'. In a orntQSTaphto qa'\a e.plo71ng an •1-m upon •hloh a 

plain-text o.baraater 1• eeta'bli•bed., an el8118n11 upon whioh a ctp)aer ohuaoter 

ii eeta'bltahed anct a ee'\ ol" Junapoaed, rotatable nitahln« de•1ne ope~ 

U ftlJ 1nWrpoM4 lleW.en. fla1d alemente, all coord1na"•4 tor open'Uon. unAer 

tlae oon11rol of a ctpher-kq 'ran•Uter through wbloh 11 }>1t111M4 a perforate& 

tape 1 the method or enoiphertng whtoh ooad•·h bl aonU1'\louel7 T11L17inff the 

oipher rallltl tant or a gi Ten plain-tat chl!\racter bJ etemaU1 and. apert04-

l•a117 oontrolUns tJle 41eplacwaen•• ot •&id •1tohlng 4e•l•• perMU'h.t1wl7 

an4 1• a ate,...lM llMlllll'e the •WJ ot external aon'\rol ln•olniw tile operation of th• otpher-te7 t'Nn•ltur aooordlnc to an utnt•lll811'1e, ran4cm 

91qMaoe ot k•7ina oharaoter•, ·•14 oharaotere 1Mt1ng rttpre•nW lty pertor.,. 

tiona lR ea1d t&pe. 

· 30. In a orntoen.phlo 11s'•• eaplo7tng an elOMn' upon whloh a 

plain-tex't chft.l"&CMr 1• estabU•h•d• an •l .. ut upon which a cipher oharao'Mri 

1• ••V.ltllehed, and a ••i ot Ju;l:'tapoM4, rotau'bl• ewUohlng deTir.e• opera-

'1"MlJ ln'\erpo•ecl ltetween aaid •loaen:'•• all ooor41na'84 tor operaUon '81Ur 
REF ID:A272917 

j the control of ~ plurnlity of eleci:ric1Lll;1 int.eracUng cipller-ke7 transttUter91 

throwth e~1.ch of \fhioh is pl\a1Jed perforated tt4JM18 ' tho netbod 01" tmoiμheric 

wh~.ch .,oneistn i.n continuo·.u1l~' v1>.r;pir1G thP. cipher re8Ultan't or & gt'Mn plaintat ohe.n\Cter, by externally ti.nd aperiodicall.7 ·oontro111J1f: 'th• cUeplacemen'\• 

ot external control invulvi•16' the operAtion of the individual ciphor-ke7 tr1111.,_ 

m1'tere acoordill6' to respuoti'fe 11 uninwlli.sible random Hquence• of keyinc 

chara..c ·,arn, 11Rid oha.ractera being respec'ti vt11J' represented b)· perfora'Uona 

ir& said ta.}>9•• 

:u. In a crypto~phic ez.,ntem rnnployinc~ M elemient vpon which a 

1• estal)Uahed., and A. !.'let ot jmrte.poeed,. rotf\table awttchtng device• operatl'fel7 

interpoNtd boween l'ald alam~nt!'I, q,11 coordinated for operation under the 

. throup ea.oh ot whioh 18 paePd !\ peJ!'torn.ted upe: '\ha method of' enciphering 

text character. by externall,Y IUld aperiodioally oontrollil16 the diaplacer-JE1nt1 

or tald 9Wi tohirtB devio•• perrinitnti vely nnd in " 1tepw1H l'l'lfLMer, the step ot 

acoordlng to rtt9J>8C'1 Ye, im1ntell 1e1ble rnndoaa Hquenaee of lr:e,yi:ng charactere, 

taid izaa.tliltr OhP.rtl\Cter• be tng represented by perforation• in w..id tape• tor 

oontrOlling snid tran1mitters and oauetng intorAction between oharnctere pasaina 

32. In n ory13togrl!lphin s;n•tem &l'!lllloyinc M elcw1e11t upon which a plainta". cb&rnotar 19 e111t11.bl hlled, An ele:•mnt 'J.yon which a cipher clmracter i8 eetablilhed, and a eet ot Juxt~ix>sed, ro'bl.tfible 8Witohing d•~iaee operat1-..17 

1nterpoeed between aa1d eleMen'\a, all coordinated tor apera Uon under the 
REF ID:A272917 

through eMb ot which 1• paesed a per1'ora,ed tA.pe; t ·c1! aathod ot enotpher1DS which oon•i~~e 1n cont1nuousby ~1ng the otpher rtttniltant of a gi191l 

plata-text character, 'b7 external.11 and aperlo41caU7 c«m.tl"OlliDB "be 41._ 

plao-n:l• ot 1&1d •1tohlng di9Yloe• 1 permuta11YeJ.7 and ln a e"8pw1• lllN'lller, 

the •1'ep ot external control 1nwl'Ylng the operation of the incUn4ual alpherk•71DC oharao\.er•• eaid oharactera being represen'\e4 'b~.1 pertorationa in 

tnnsnitter ua1ng a cipher-key coneieUng ot keying charMJ'Mr• composed ot 

8ignal1ng unUa peniuted in accordance wi'\h a plurnl-unit codes the aie'ihod 

ot ellm1nf\t1ng 1'rom the tinal crypto1rrM thoee penm.'8.t1on• of said. ooa which 

haft no 1ta.m1aJ!'d equi Tn.lenta in the cou1'8n'Uona.l twenty-six le'\ter 1-Jorse code, 

... 14 aaethod oon•1et1~ ln oauaing aald oipher•ke~ tranllllitter to oontrol 'the 

eharacter•• 

and employing "" 1te71nr elamen·h a plunU ty ot oiphar-key trtuuwi t\ers, eaid 

.. , 

tranemitters ueing cipher keya oone1•~1ng of keying aharaoter• comr>oae4 ~r 
REF ID:A272917 

sipaling units l)Q?'lllU'\ed in nccordanoe with a plurnl•uni'\ codec the .method 

ot elbd.nating from "the final oryptOb~M\ thoA"e }Jflrmutfdi ions of tm.id code 

which ha'N no standl\rd equ.1 vr.lenh in the conventional '1rent:r"'"B1x letter 

to control collectively the p'mmi.tn.tive, stepwise diST>l&eemeuta of '\he cipher-

' .. 
REF ID:A272917 

fbA. ,_J • ~-~ .•.. " 

~ ~.... In comblnatlon a aet of' chai-actt,r element• 

conat1 t;ut1ng a key board.; a 3wi ···ch 1nd1 vidual to each 

alc-m1~mt and l>perable ther~b'!fl s corr~nJpond1ng n11mbor of' 

ti-ami1at~.~:·; clev1cea o,,;r.;rablt:l ~Y ••lfd alamonts; e "1?'1.ng 

syster~ 1. n 1~;1r )osed between said sw i tohes tind se1d trane1at.i.ne; devices render1:lt;; avrdlablo • 111'11 t1pllc1 ty ot 

eleot:rical .1:n1thR between said a>i tchea and aaid device.; 

and r-;:ett.e.s o .. os-ahlu 1n reeponee to each ktr.' Ot>e:ratlon. frv 

aelect.1.nii:; e ;·;ouiJ ot aa1d ;.;atha, •aid la•t named mean• 

comp:r1 !:! Jng a var~ably opera!·la aena1ng meohan1am. 

~~>-I& In cor.b1uatlon a set or c:1a!9acter elel!J.9nts 

cons t1 tut1n5 a k97boa:rdi a S\T1 toh 1nd1 vidual to eaeh 

eJ.ement and 01>erablo t.1'\e:rel>J'i El. oorros,t1ond1nr; number ot 

tran•lat1n13 dertcea operable t'··· said elanonta; a w1r1nB 

Ay•t.am 1ntorpoead between aaid awltchoa and aa!d t:ranelat1nt; dov!.cea ronderin:,5 avsl lablt; a mul~;ip11c1~·:y 01· 

eltJctrical .,....atha between sa1ci nw.i ·-,;c t4'8 and !!&id device• 

wh~1 .. e~~:.' eaeh aw1 l;ch rnoy becm::c aa :~ocl ated w1 th any one 

ot o }l;;Zoe. l.1 ty of' ~" .1cl translatint; dev1cea, aald system 

compr1 ;: . .lr.(~ ati .. 1usta'.- ly mova~·le conr:ectoz-a whereby tbe 

wlr1n~~ ayat1.1m may bo &1ven a11 initial settine, prov1d.lng 

one eleet..t .. .:.cal .·nth for eacl:1 awltoh;snd meane ovarable 

111 resio)CJnae to each key o,.;ei-a+:1on t'or chan&J.ng such setting. 

~-·-
REF ID:A272917 

~""!. &:. 'i"'he comb:l 1-1at1on aet t~orth in ~la1m ~' I. ln 

which the laet named r..eans comprises a sene int; ~1oohan.: am 

OpeJlable by a perforated element. 

~<:, 3·t,~ 'l'he oomb1nat1on aet forth in Claim & 1n 

w'l10h t~he la•t named means cur.-'lpri•e• a !o)lura11ty of 

relays Oe>rl'Csponding 1n number to the number or movahle 

con!1eotora; and a aena1ng meohan1am operahle by an alement ~errorated in accordance W1 th a plm-al un1 t 

~1. ~ In c1)mb1l'lat1un a aet ot c 'haracte1• element• 

conet1 ~u~:;;ing 11 keyboard; a ~l tch imil vidual to each 

element and OIJt'1•able therel>y; & oo·proe;>r>ndlng number of . tra11alat!ng devices Oj,)Et:rable :'.";.- said elements; a wiring 

eystom 1nte:rpoaod between said switohea nnd tmid tranelat1ng device• _rendering available a nilt1p11e1ty o~ 

eleotrloal path• between ;;a1d aw1to!·tee and al:dd <levlcea 

i;;horeby each aw1tob -Y bec~me aaaoc1e.ted with any one 

of a plura11 ty of said trari slat 1n1?.; devices, ad.ti s: at.em 

COl'lprialni; a plura·i 1 ty oi' atat.1onary annular cotmRJ.tator 

elements n.iici. rotat~hla annular co~tAtor membe~• intermamb~1tt~ having a set 01· contacts on each face theroot, 

cooperat1nc with the oont~ctR ot the adjacent atatlona1'7 

element , :mid mernbo.r• aleo lu1T1ng random oro•a conraoc :;1 one 

between the contaota on the oppoe1ng taoea thereof, 

whereb7 the w11'1ng •Y•tem may be g1Ten an ln1t1al ••ttlng 

at wt11; and mean• operable in re1"on11e to eaoh key 

operation tor ohan61ns auoh setting. 

·-··· _ _,,.-.. . __,,.