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I-•• 

8ICIAL CORPS ram BOdl> 

1. !.• The Board ••t at 2 P.I. tbia date, in li.o<'>11 34~5, flllaitlou 

l\lildJ.llc, p.,.enat.t Jll ••bers., 

ll• Ir. I. r. 7.ri.Wn was Qalled e.e a witaoss. 

t. The pur:pc>H of th.1~ •••tine wtla·to ta.ke action anJ·we r~dat1oa• w1th reference to the following 1Dvent1ons or Mr. 

w. '· Fried9af 

!.• Iadl•Unc t>erl.ae - Inventecl Much 20, 1936 • 

.!• Iaprov•at in OonTeJ"t.er f7pe M-lJ.4-T-1-

.tavente<l March 111 i9J6. · 

S• St7lu.-opented lqboard tor a Small Po>.'table 

02:7l>toppb - Invent*1 Aupst l, 19.'.35• 

:;. a. Th.e Board tbda that. the Indtoatl.ng Devices deacribed in 

drawina.ra.nd attached p&fer, dated. Karch 20, 1936, bar.s no "T&lu• to 

be .Govwnaent. · • . 

' 

. ll• The Board :reeouends that the 1nveat.1on c.overin1 th• Ind!. .. o..ting Deviett be retunted to Mr. ~1.edaan 'With.a. otatww:t to th• etteo\ 

that. such. deVic• bas Bf> milt tary ftlue, and that there is no obJection 

to Als ti<.pf>ly!ng for lette.rs patect on t.hi• device, if such applioatioa 

1• pJ>OMCUttd'wi~t apanse to th• Go•.._..nt. 

4, !.• The Board t!.nda that the Iapr<1Ye.aent. 1a Converter 11-13.4•'?-l 

a• .. meribed in .-orud.\a ot JPril 29, 19.36, ia or value to the Co•ernmeat. 

,k." (l) The- Board recOJ1tRende t.h&t Mr. FriedM.n be tnstruoted 

tct nbait epecitications t,o the ,a.tent Section for the nec••IU'f act.io•. 

w:i\la a •1• to ob't.a1111ng letters patent Wider the provision ot Section .4886 

ot t.be ledeecl statute•,. · 

. {t) The~ r•co•-4• that the invention be not oona:1.d.ere4 

&aportant 1.n the HaUC81 Detenee, and that a no11-oxcluaive lie•••• to the 

.,.,.._ent.,. 1n wrJ.tUrg, be i-ec4uired • 

. •' 
REF ID:A39181 

'\ ,, 

• . . ' 

' 

. 5. !.~ Tbe BOaN tiada that tbe •1t7~pe:r.W Keyboard ~or 

. a lull Portable .017~pll• aa descri'bM • }lilot.o•t&Uo capt of . ., ~ dat8' August 1,. 19,,, and· attaoh-4 .deecriptioa ot ~· 

b.W .. J.111'.~ 21, 1?36, 1• of value to the Oov•raaent. · , . . " 

~J!.. !he Board rac~di that• 

, (1) .~; f'rledllan be lbt"trtlct.ed t.o eubait apecitioatioaa ib ·'V. Patent Section tor th• . ueC.Mi!l17 a~tion, •1th a 'fiew 

to ob\&1-ing·letters pat~nt under. the provisions or s.ciion 4886 

or the Btnited Statutes., . ' . 

(a).n• 1n•ent1on b• not eon•14ePed iapor~nt·in th• . la\l~ ?Httenaep •ud that a non-excl.Ualn license to the · GoMJ"Nll;at-. in wr~t1nrr, be required.. . 

.. .r B •. Coltoa1 

IJ..-t •. Col·.;. Sipal Corpe, · .Pres:S.dent. 

I.. S. RU11bough,. llaJ()I', Sip.!l-1 Corpe, 

ll•ber. 

.. , 

, " 

· G•or1• I. Back,.· 

C.ptain, Signal Corps. 

Kember. 

•~lter c. nu., ' MaJo~, Si£ll~l Corp1, lleco~r. 

. J. n •. .Alliao~,· 

lltt.Jor,C.nwal, · . ChJ:e:t S~al 01"tic8J' ot th•· knJT • 
REF ID:A39181 

e CGiff:DENTiAL 

*"" 20, 1911 

l. 'l'he d1'vioe Lo ~ deaor:lbed may be wsacl for 11eY1tr•al pu11-·ooao, ot 

which tho tollowh1g ere o'bdoua: 

~· For lnterconnocting two ort1aee e.t a local headq•rten, so that 

a ko7'blard operated at a calling •tatlon rill indicate warda, 

lnt..-., mm'bera, or combiMtlona t.hereot at the aalled station. 

lL• For adwrt.lstng P\lrpoa•• aa a. «mu tor attl"flct.1.ng attention 

by spelling out in lettere e.nd tipr• tbe adftrti•anent• 

2. 'l''1.a ttn1.ee ia di••loafld 1n the acc&.:\prmylng Ft.g. 1. "l'he ~eotvud.n 

there •h!'JW'ft 1• &dapteil to lndl•t• the 24 18'ten or the alphabet and t.b• 

dig:t.ta 2, 3, ··'r, 51 61 f, alli s. (The letter 11I• aa.n •erw tor the digit 

•1 "1 the lettor "O• tor the digit "O" .) But, tor adftrtiD1ng purpoa .. , 

t~• form or ~o:rd:i, pietu:res, etc. "°" \hi• 1• po111ibla will beoome app&ren\ 

trD!".1 • oon1:1dora.t1on of tho a11tem. 

tor •9't1ng up pernut.atloa ill qcordaae with a l-11D1t cOCle is prodded. Let 
REF ID:A39181 ------ ~--

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(The penmltat.ions ualpecl t.o the llttera or the alplaN\ ao rre•pond in tboir 

nnnatlan pairs ot tho keJbOarcl ocmt.rol the a contaot 1"91"8 abown ai 1 of 11g. 1. 

Thoy each haft 2 eaat.ana. iLt 2 there la ehown a hoD.ologoua ad of 6 oont.aat 

lnere and uaosiated J,1d.ro ot •· ntaota. Tbeae cont.Mt lners are controlled 

by pina whioh proJeot tre the periphery ot • 1Ddloator whael 3• U.... a.re 

j; 

prod.de t.o keep the lndloator whMl ln '-'-~~ l"OUt.:lon. The perililery ot the 

1nd1aator Wbeel •• a transluaem or tramps.rent window running all aroum S.t 

and thle window la dld.d.ed up into 34 eq•l eegmente oa each of whloh la pu.111\ed 
REF ID:A39181 

9 CONFlfJEf'fi i:\t ( 

!Ider.I.or of the 1n11t•or 1lbee1 and oloae \o tb4a avt•e ,_..., ti. peW 

of obartatlon. It will be noted tbat t.hta )Mp will be 1Ulllinated only 

when the 2 "'' et oantael lnen at 1 alld I are la hacaologo- poa1t.1one 

vi\h Nepllft to their Maodated left and right eontaot•• A9 \be kep o orN8pond1ng to t.he auoe••l• abtU'Ut_.. to lte lndio&t-4 .,.. clePN»•ed at 

tbe keyboard of tile calling et.a\ton, t.hey are Ul..s.na•ec1 auoe•a1Y8l.J at 

the oalled •t.a'llon. .\n~her •t.bod ot operalan wwld M to oaw1e the. o--

i:ariaon oln\d.' t.o atop the lndlontor whMl in lt.• rot.at.ion from a a\arling 

poait10Dt u the aeleot..s poalt.ion determined at the keyboard. 

Iut.ead of a t.nnaparmt or t.ramluoent. 1dnclow la the perlpherr ot the lndioator n.1 19' thS.. be repluect by a band eontalniag ameoaeed ctaracter1. 

lnatead of tbe l•p 19' the oc:aparuon c1rG\11' &d11Ga a mpn which ...... 

a papor tape to • tllrud •1•\ the t.ne INmd. at the l•tant the oomPIU".:..on 

oS.rcuit 19 o«apl.Atrl alld at ~he•- time let the tape be uvancllll. 

In \he toreptng eyetm th ... are 34 ~•I'll but wit.h 11. 6-uld.t ooeie 

it. 1a pos•1bla to prodcle tor the ind1cra\1on or reooniing ot ci total at 64 

aharaoten. 

For oonneotlnG the oalllng nation With the oalllld atatloa a 13-ooncluator 

aabla will 0~1 be ntrtuirect. Sine• ihia ayatem 1e lnt-.tecl tor int.er-
REF ID:A39181e 

connecting loe~l offices the length or such cable is not a serious disadvantage. The simplicity or the system, which'requires no synchronization 

or complicated delicate mechanism, is to be counted in its favor as against 

the slight disadvantage of the 12-conductor cable necessitated by the method. 

For advertising purposes, there· is or course no objection in having 

the 12-conduetor cable. Moreover, instead of a keyboard manually operated, 

which would require the employment of an operator, it is possible to operate 

the device by means, of a perforated tape, passed through a transmitter, or 

by means of a rotating drum upon which pins can be set up to correspond to 

the successive characters to be indicated. Only the size of the drum will 

limit the length of the advertising data before repetition. The druni could 

be made with demountable pins, so that pin permutations corresponding to 

new data could be "set up" at will on the drum. 

The device can also be used as a means for showing "spot news" visually 

in newspaper offices. The ends of words could be indicated by a dash; "comma" 

and "period" might be added, as well as other necessary characters. 

(LA' 

w~ 

~nn . ~ ?;;:h;r(J)An <::t~ o;~w~~ 

William F. Friedman. 
REF ID:A39181 

9 - ------

April 21, 1936 

£ddendwl to Invention ot• Indlcatinf Dence. 

l. The syat• deacrlbed above can be UB£d for telegn~lhiC 

}Urpoaes bJ' more or leas simple extenaion of the princi~lea described, 

as noted below. 

2. Sup.t1ose tblSt the local and distant stations are provided 

with idanticRl rotatint; ~heela sync~.r?nized b.r start-stop ira~ulse, 

so that the rotating drwu start al.Jlultaneously and &ke- their revolutions 11.t l>l"acticalq the same rate o£ speed. 

). Let the comparison circuit then actu~te a line or s41nal 

tranaaitter roley' at the aaae instaat that it shows or records a 

local signal. Then at the distant stati,n, when the sieml arrives 

it will cause the aaa indiCRtion or record to be mde, since the 

two drua~ are in qnchronous operation. At the CAl.led '!tatlon, 

accord1Df to this .method or o.ieration, the com;ariaon circuit is 

not in o.i:J')rat1.,n tor receiTing pur:10ses1 the comil!lriaon circuit is 

1n operation ror tr1otnsaitt1ng Jur:?Oaes onq, and either station can 

o?ftrate in this respc.:ct, altttrnateIT• 

. fiilliam r. li'r1tJd:Un. 

.. J •• I , i : 1 I '.._ ,. • 

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REF ID:A39181 

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