' . : :~, 

", ' 

. __ :REF' ID iA4r6l63B · 

. _, . ( 

- : eracuiTs i1ND ~oP?&\TION G' E. il. c. wcAi. mmGLAii ALARM 3YsTFH -. AS PROPOSED FOR mnTED ST/:.'l'ES «7AR DEI';\i\T'r.fil!,JT SIGNAL ·coRPS _ _ ,. . ~. >: '' •' ,_ 

ti:.,·'c •. operat.100: . __._. • '. > 

···1 '"', ', 

e6or.utiqn, fro!n· A. Q. porrer llnoo is ~btained by. the use of a . _ 

tranaf()tmer _ood cepper oxide rectifier~· 'fherectifiar is connected_ across .the· dey cells with two resisters in series with -the · .positive lltW.; A 25?.tt'd 25 volt olectrol.ytio condenser is shunted 

acrbas the output ·of the reo_tti'ier to provide filtering- aotion for 

the x-ectified current. Th~ i'ldjuatnble resister (R-S) is ·provided 

- so that: the current required for .the system can ba vnrioo and tmould · 

· be a.~usted -ao that _no current is -flordnfl el ther ·into or out . ~t theb~tteries. ' . - --· - , '-

::.· Reslst~ RB_ is' ~~llizod to j,reverlt o ·gro.und on-t~e normally· un--

-·grounded loop from.ca.using· a. "short circuit" across· the 70 vOJ.t 

seconda17:of ~he transformer, eliminating the poaaibility of lnjuey 

·-to the transfomera·- . . : . ·- - '. __ · - - · - ,. ' ''. ' . '. 

- . , 

... In the- accempnnying ochematic drawings irsketch Bn, the A. C., p011er 

suppli amt tl"buble looatin,ff system1 _ Wirine is indioeted in red ·so 

·thnt it is rendlly identified from the system e.s cnlled for in the -·;,;. _ - . bneic bid. _The opero.t,.ion of the t~\Jhlo locating t)yste.m is readily 

,. i~ :. • -- apparent and in yiffil of the inherent oharaateriatica· of Neon gas 

··: 

'.r' 

._ · _,: , it :can be seen that. rtoronlly ths tr<mbla locatine Neon l&!lpa have. no 

-' effect on -the systeo, hm?ever, :upon operation Of the trouble a vtitch 

70.volt'A• c. lil;a.pplied. tO the-protection uiring al'ld. the Neon gas 

-_ b_eeoraes ao~ve !3,nd ·the lnmpo-9ill gloTT •.. : -. . · · -- - · 

.. ~ 

: The resister R-7 is -incl tided to provide a completed circuit through 

the protective wiring ~hen the tr0uble locating switch is oper~ted 

to its "on" ?Ps~tion. An 8ma A. C_. circuit is established through 

the oontacts,. mndoi7 contacts, wall panels, etc. _ Thia current is 

deoided-upon-iri order to burn-out any locating corrosive coating on 

snnll particles of. foreign matter that may accumulate on the contacts -durinS the protection "off" pliriodQ .-- · - .. .-- .- -_ _ . - . ·.. , _ - - ' " 1 • . • " • - ' '· , 

~Jormil nprotegtion Qnn Gondition: -- . 

The clrcuit--as shown on sketch.Bis _in·i~ normal "protc.ction on11 . 

'pooitione 'It con::iists of 1-_1. convontional -single circuit that may be 

· tr~ced, from the positive terminal of the b~ttery to the al.arm magnet • . then through-Resister R31 the housing lining and tampers, continuing 

through-control pryoff tamper, contact 3113 and contact Tal to the 

ungrounded-side or the premises rd.ring. Tho circuit maY be further 

traced thr.ough· contact· Ta21 resister Rl to the milllamriteter, the control 

unit _door .tooper, contact srn., to the magnGt ot the alarm relay A, .. -tqroueh 'oontaot s~ and grounded loop of tho prot_eotive premise ID.ring, -

to groundca The circuit continues thro\lffh contact Al of the alarm relay 

·to. the_ nega~ive side. of the battery. · 'I,'he relay L is connected_ parall.el 

With the alarm bell by a circuit establiohed t~ugh the f'use:- contacts 

Cl and sw4. - . _ · . 

. @'pproved for Release by NSA on 12-08~2014 pursuant to E.o_ 1352\3-

1-1'' 
\ 

\ 

REF ID:A416163B 

·-2-

. The Current in the night protective ci~Uit is adjusted to .. OlOA by mearis' of the ndjustable resist~r !il. - . 

:Alnrm Condition: 

The opening of ru\Y attachmentj a break or c::rws 1n the prem.16ea wiring 

will cnuse the magrnrt, of the alarm relay to become de-energized.., Upon · ~energization, the contflct Ill of the ·al.arm·. relay will open and . contact 

A2 will close. Contact A2 cpnnGCts tha ale.rm device and locking re~ 

· ·d.1.rectly across the ·dry cell batteries and output of tho rectifier, 

causing- the alarm device to sound continuously and the locking relay to 

become energized." The back contact L{U) of the locking relay opens, 

·making it impossible to restore the circuit by merely closing the attachment;, or opening or removing the: cross in the proteotive uiring1 : and the · 

front 'conte.Ot L (U) closes, creating a holding circuit through the 

I:W.gnet. or the locking relay and maintaining the circuit ·through the al.am 

dovioec. The parallel connection· of contacts t\l and :.2 of the alarm relay 

·and L, (U) of the. locking relay. ie utili~ed to rninind ze the possibility 

of false alerrns. from· extrooeoUE.i (building) vibrations~ stc., and to . . eliminate the uae ·of a wirin,g suspension method of mountine the alam relay~ . . .,. ' - - ' . 

· The iocking relay, is ·also. arl"anged to· perform the f ollomng functions: 

contact t (a.-3) opertltesthe hoad~rters annunciators. Contact L (IU) 

shunts OU.t the adjust.'ible (rectifier) resister R5 ao th.'lt the greater portion of the current required for .the operation of the ball is ta..lten from 

tho rectifier and only a minor portion is taken from.tho dry coils. This 

feature is included to obtain dry oell eocnonw and eliminate frequent replacements. _. · · · 

l!DAY" ;OR "PRQTPnTIOM OFF" cormrrior!!,: 

VJhen the prem:ts~ is to be opened»· tho shunt switch is first operated to 

"off'' (contact elo!led) position~ This places n shunt nround the contacts · on the en.in entranc~ door, 0nd other removable attqohments, all<mine entcy 

mthout sounding the al.am.. The· control cabinet is than opened :md the key 

Switch returned tO its "off" positiono The circuit through the protective 

(premises wirine) i~. opened by contaote SL7l, S~72 arid s~ of ·tho st11teh. 

A holding circtiit for.the alarm. relay is establishod from the battery and 

output .or the rectifier through the resister us, the key switch,· alum 

reley"JD.agnat. and closed contact of s:~. ~e current 1n this circuit cill 

be ~010 amperas<D 

Test Procedures 

When the key .switch in the. control. unit ia operated .to its 11 test" position 

a. test circuit is establlahcd from the positive side of the battery and 

· . rectifier, throueh the, al.arm bell mechanism, RJ, the housing lining .and · 

tamper cont.nets, to the protective (premises) wirlng (live side), continu- ·. ing through resister Rl, the milliammeter,., tho back contact of the control · 

..... ·: 
,,_,- ·•,' ,., ' . 

. '~. 

: _."',1•" 

., ... · 

REF <ID ;A4161638-' 

-3 ... 

cabinet· door tampeif.I .resist~~ R4, the ·grounded protective loop1 ·retul-ning . ~ ,, .through, tho, ground .oonduotOr to the ·outer housing nnd contact Al to .the .. ·· 

:·.. · .. negative aid.e of. the battorya'. .. With ·tho~ cHrcuit in this condition ·the meter · shoU:ld rqad' .• 010 amperes. If no ·randing is obtained on the mater~: it 

. \". 

· ·indicntes:an' im~operly .closed ·nttua~ent. or a defect :or trouble. in the 

mM.ne. The tr<,>ublo can generally bs loco.tod by use of the ?Jeon trouble locat~ i'aeture1 .p~viohs1y descrl.bed. · · · · · 

The operation' as. i~~ic6.ted bore is for one . control,' controlling one area . RlI1d tha rilnm unit in both the Llossage room. and· gunrd · roOille The procedure: 

for the :ot.Jlo:I:"~ area. is identical and ia independent of the f irat areac. ' ' 

. ', ~ 

~ :. , ' .I • , 

. -' ~' ' - '." ·. 

. ~! 

. . ' . ' ' 

... ''·-

·' . ; .. · ,' .· 

'- ,· 

. 

.. ' ... --~ .. 

' l . -

. ' . . . 

' ~ • I 

~ ~ " . 

·"'' •• '1 .. ·._,1_ 

/' 

.. ·. ,, 

.. 

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-· ''.,-

. ; 

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', ... 

·. ·i: 

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, .. •1 

... ..... . > 

'. y ,, 

, .. 

. ,. 

REF· ID :A4.16163B 

· Itf.SCRIPT!ON OF E •. P2 • 0 ~ ·LOCAL BURGIJW. ALARM SYSTEM 

. The E •. P~ c. Grade "A" M~rc~tile Burgl.G.r Alarm. System ia· the aost 

modern Bild ·erricient available on: the American market. Iri it, features . 

are incorporated which take advantage of modern d~elopments in electri-, · eel. science. '· Basically 1 E. · P. C. systems exceed ·the ·rigid requix-enienta · of ~he Underwritors·Laboratories, Inc. for Orada "A" Burglar SyatemsD 

The ·systeo ~':'.a called for 1ri Signal: Corps . OUtl.ine 'Speoif'ieation1 . 

Cinvit.at.ion No •. (R-UJ75) YJ-1049-IJ)c.l, would not include man.v ot the 

. :·.features incorporated in the ED P~ ·c •. Grade »A'' system. However, an 

additional quotation .haa been made over and above ·our basic bid which 

. would ·be. the cost· of. adding theae footur~s to the system a.a apeeii'ied.. 

/,. description or tho sistam !.! specified followso ' . {' . 

· P;roteoticn · Methogs, .·· _.·J . 

' '" : '. ,..·· 'r :, 

Tho protection methods to be emploredare to follou standard practice . ns racornnended by the Underwriters' Laboratories, Ina. and in each . . 

· • ·. ddtail will comply rdth the speoifiaations; spac~caU.v, double. circuit . prote.etiva circuits· are to be Gin.ployed ·in,.sueh· a manner as tt> e.f'.ford the . . highest possible degree of immuility against attackD All screens are ,to 

· be of at3ndarct reoommcnded r:iaterial, di.Mansions, and circuit wiringo . 

A choice of tm typos of screen circtiit wiring is offered, ie-nl.ternato · 

bnra of th.e same pol~t~ ~ich ia knotm as 1-4 wiring or odJacent bars . of the aWM polarity which la kliown as.'l-3 t:1ir1n«a. Thia circuiting cannot 

be chlmged once . the screens nre c.ooot:ructe~~ . 

1 

All contact d.eViaes, door.shunt sm.tohes, connection and e1rcuitwiring 

shall be . .approv~d.atandtl.rd as·rocomnended forburglnr Blorm prnotiaea 

· (see· photograph)., . . . . . · . . . · ·. ' . · .. . · .. . . · 

'·, .. : •,'' 

' " ,. . .,,_.,-.. .· '. ' 

I.occl. ~ontrol units 1n eaeh protected area. shall consist ot E. P~ c. key .. operated control ca.binat~hich contains an "on"-"otf" lock std.tch1 super-. 

visory raeter, and necessary d.ring,· and devices for its proper funotioningg .. The aabinet. is .equipped with a hinged.dool". operated w a key, ~uah hinged . 

•· 'door. boing equipped 'with trunper contaota~ . One contr<>l unit is .to be 

provided .in each prote~ted area •. (See photograph~ ... · · · 

The E., ~~ c. key control hns cirCW.ta which are so :arranged thnt it 

requires the ope:ration of· the key md tah . in. tho control. cabinet m the' .. 

. . key amtch on' the out.side. Of the premises a:t. the time of setting the alarm~ 

· · .. If the switch in the. control cabinet ia left. in the "off! position and ... ·the operntor attempts ·'to operate the., door switoh upon leaving the. premisesg 

. an. ala.m t1Jill sound immediately notii'ying the subscriber of his neglect~ 

In other systems it is possible to eomplotel.y forget and o.cit the opera~ ·tion .of'. the "on".· and .noff" switches .in the control mrl.t cabinet ·and to 
~ . '' 

' ",' 

RE~" rn: A416l.63a · · ·' .·, 

· .leave the premises, operating the door Switch in the uauaJ. manner. 

In doina SO~ the Ope:3rat.or muld lk'1turnlly' J:\SSUI!l.0 protection on the, -

area a.a'• being established but innsmuch as the 1','on~ and "off" switch ,, in the control unit· '7ru3. -in the "off" J>oaition,. there oo~d be absol--

' utol.y no PrQtecticn on the area.·' __ :· - ' ' . - ' ' .· ' ' ' - • . I • ~ • • 

- ' 

_·It is this circumstance. which forces. some mrumfnaturera to employ _ 

the uso_ of an outaiqa system operation light in an attempt to overcome - the above described epeiration deficiency. · · The-ueakness of the lieht 

·, is apparent in·view ,or' the fact that it is somothing olae to operate 

and erui ·itself .b~ ·forgo,tten. - ' . ' ' . I ' ' •· . 

On the-average instellntion, it ia poseiblo'for an intruder to bide. 

in the_protected area_ during the open period and after the nroo i~ 

closed and protection applied, the intruder can eo to the control unit 

and ~'11.tb a knowledge of the location of the contrOl tamper contact, use 

_means_ to prevent its oper~tion .while prying open. tho ,cover on the local 

.. cont:rol unito Once" the cover ia open' the system can be turned off- at · -~he local control and all protoct.1on removed from that area• -

_This possibility does not exist uith the E. P. c. · ayatem inasmuch as 

both the door shunt switch and the st7itch in the control unit must be 

o;>erated to th6ir "off"· position befOX"e the alurm is inoperotiveo · 

mien .an attack of the type mentioned ~Jx>ve .is m:.1.de1 the intruder may .. . pry 'e>r.-otherwise succeed_ in opening t"'3e .E. P. Co control unit, horrevar 

the aiarm. will ring \1hen_·an attempt .is made to tum the system off ·even. . ' 

with the proper key because it is also rieces~nry to operate the door . 

switch before the system is inoparativeo •It is absolutely neoessal"1' thri~ the outside_ door ·swit..eh ol.so be· operated-before the 'nllmn .bell 

could be- silenced. The lock switch used on the outside door consists . 

of ·a cylindrical typ"'locking barrel Llttd this arrangement ha.a boon _ · appr.qved as pick~proor by the tmdor_uriters• _Laboratories, Inc. Furthcir-

·._ ·_. ~more ·the. }(eye furnished cannot- be d~licated exoept at. tho factory; dlie 

to their unique tY}.'le,. £U:td than onlJr t7hen a propw code. number is . aupplled 

to.the rnanufaoturer.. . - · · 

' This oodo nUmber does not appear on any of the keys nor can be ldenti,;,: 

-'.fied in any manner on the lock. E. Po_ Ce eontains no record of such· 

numbers and keys can be ordered only by authorized reprooentotivea of . the subDCriber. Many lock suitohes employing ordinary- Yale keys Or _ ·. _ 

' .other .OJ.at tumbler keys can easily be.duplicated at tho nearest hjrdwfnoe store~ · - · · · · · 

" 

· Al.arm Uni, ts: 

· Alarm Units are to· be of Eo P. c. manufacture and are to be connected 

·in acoordanoe ~th the specifications to tho local control unita by _ tul.ly euperviaad double circuit wiring in such a n:mner as to prGvant · 

. tampering without initiating proper Si8flals in the at.arm unite The .· : 

al.arm. unit shnll consist of a. steel cabinet equipped mth tamper contacts 

· which .will prevent_ access to tho arlarm equipment without sounding an 
REF ID:A416163B 

-)... 

"J.Z'-m. '2.'hu c:J)in8t :.ih,-:J.l. conLin Un n3cecur·'17 !'Dl:•yo8 ·.:ririnc~ bells, 

Pnunciuto:r clro~)s, otc. E f'o:..4 th:J ~rot•8!' C:.'i!d cfficioc1t opcl:".').tion .::.nd control 

of th:i u;crstc::i. Dry cell 1nttor:l.,:_,s ··:ill i)o lnclwiud eiti:0r 2,n thia 02.b-· 

inot O:L' in r~ t;',:1;-icr-proof c::;,binst Jdj:icent thc:rcto GG r..:c1uire.:1~ 

In tf>:} :~. > Q Go circu5.t d-c· :;i r,n, ti-:c ~ml.1 is 1m .. kr const'.·nt clu~tdc~i.l 

sunt:Fri.:;ion C\!',d Bhr!ulJ tl-.crc 'b:: 2.!Tr:k:l:'ar~c;r..·'.:',Gnt of 'i:.110 ::toll td.d.ll,'?~ it 

;:-ould bo ilz:;xJ:::dble to pl:~(;C' th·~: :.~.:1.stc,,-. in :i1C,rvico ::.t clo3il°'..f!• Thio fs'1turc 

olimin ,tee; tho r>.ee:d of ncrr-_;.:li. o;KJ.'.,'\:..iou of t)1~; (lbrn bell fm" t::::Jtin.c raupo:.;€:2 uhen unloc~~in.:_· t!:e :::/3tG!Jjl -;rhich pr-or.:ccluro iJ \;o:tthlo3ll in:::..imuch ;w 

tl:e tcot occ1n-:::i ~ftC'r th2 \LJG of F:··3 :J'l:Jte...~1 in'.Jto2d of b0fore~ (!":J(Juin:12nt 

3h0·::n L'1 phot<.1/J:"i::;}}'to bo r-,ociifiecl in ~lcr:o\~d~nco ' .. ii th the opocific<~.tiom) o 

For t.J;c nrot•:~ction of r::cll :rnrfacc::; ·,'e ~~ccc;:;;~end :;r,cl. :mopoc;o t[;e W3C of 

fcilod ;Y.n·)L1 '..hie~: ia con:;idc:rc:d i.:.hr~ r:iVit offcctive cs~th:-,d of protsotine 

~;ud; 3urf.1cc:;.. l'his r;;•jt!·wiJ con,-;ists c1f th;:: rrp:ilic 1tion of :'11 ''~pi:w:cd 

foil '1irectl:r on t11•~ :;clecte:d t.:rr::"' ,y;nob. Ir.:. foil :i'.3 ~-'P~<ccd r.P.d cir'= 

cuited in :;ccol:'\:ic1nco ·;Ii.th :J:)f::JC.i fi<nti on!;Q 

The con::itr0.ctlon of th,~se prmels L ~,G ft;.llo';.J; 

e P2n(;l.:; of ;:ire-dst~rrU.nccl di.J.c2ng:i.om tl2:.;i;;r1c;d to :.:ccurc:tol,y fit th0 Hj,ll 

op:.co <lre cut to :::~ z.o :.:.nd a.pp!'o\'i)d f~>il of not le JG tbn :.• 1 c::idth n.:lr r.:t0r.J 

U1·:.n 1 11 \lldth, i::i f ;;3tcnod to thi2l ::.urf ·.cc of e::.oh ~nnclp ·,fith hich-grnde 

n3phalt.un, on 511 cr~nter;J ~.nd ch-cuit.nd in !1 r::.nJUwr ;ndch provid·Js approved 

l-3 or 2~4 lirir..3 'lB JOl\..'Ctcd. The entire su1~r,,.ce of the ;i 0 »1al ia then 

coVC:i'Jd Pith '•£1plnlt® onJ the :foi15nc b t:OV\''rsd v"lth :1 cilwot of building 

pn,-iel"'~ Uru~; furn.in:; ::. i:wL;tu:re-procf cnvulop<0 f OI' th':: f0iL Tho p~;..nela aro 

tbon inst llod en th€. ., ,r:.lJ. to be ;.Jl";-Y~cct::::d ::'-.'1d pair.Led 3.3 re(1UirM, ri'he 

ndvn.nt.~tt;Cs 0f thJ::.; nctLod of protoction :ire .::.,s f :::illo::rn 

(1) r!t10 :.c!:•:wls c.ro noioturc-proof thtr:::by rod'Jcin[: f;il3c al 1r:r.. und trz:.ublo 

dif f:l.cul +, ic:;i duo to corrosion or cioisture oho:c-t circtli t3" 

(2) 1'Lc p::.nelo ::ire l0ss :rnsat=ptiblo to open c:ircuits bcc'}UJe of the 

nc:~blc n·~t tll."'e of th2 fc,il. 

(J) Tho rir'0t•:iction of :'·Jr-:.i tho ,:'r'>:''2t~:;;t rc::;ist;:nco to att::cik er tnr.:l.rY:tTine 

by 1t'trtuG of tiF: concccJ.ed n·:tul"'o of t\ic f cil :>.nd the inhGL'('nt. :JUEH..!O[Y~ 

t:i.bilit.~· of ".:,h:) fell to brt:!'.1.k·.go upon direct ,~,tt~cl:Q 

(4) icst blo&.~ ii."1 C[~eh pci.nol 2.ro provided 30 U1.-,t I'-::,:dy :1 CC6!.:iG to the 

circuits for tc1tine purponoo is .':\v~iiluble. 

( 5) Th:l::; is the orJ.:,r i:i:;thcd ~'tJf>T'OYed by the Undul'"'»rritoro' JA!bor.:ltorics 

for the' dir:Jct prot2ct:ion of ;:r:o.lJ.s 1 :1:'31."J the hiL'hust poJsiblc q\.u.lity 

of ;:rotcdicn io ncocsoo.ry. 
- '.< 

.. (,, 

: .... ·~. -., 

.'·• 

' .·· ,. 

··~F .ID:A41616_3B·- .· . 

'!. ,' 

',' • _ ',' ',., r ' • •• >.' ' ,.l ; •' ·. ''» • ~ • '': '' ' '• • ,, • 

Screens for Uindow & Doors:. 

"· ·. . Due tc:>: the l'act. t~ t electrical protection applied .to windows and doors is 

susceptible to rnechrurl.oal injury, it is reconmended and proposed that electrical wod·acroens,b~provided~ these screens to be constructed.as follows 

· ~ood ~· • wor~s ot. ,Gpp~telJr l" x l 0 'popl11~' are constructed to proper 

' ·-

•• ·, Wind~w size end support.ad ill the f'ramo .work arc 3/8" ·wood dot10la opaced on 

4" centers, sU:oh "dotJ'els to 00, slotted to' receive 24 B'BU/!G enameled Wire~ . . 

Ths circuiting of th0 screens is to bo ·aa detJcribod nbove under 11 Protection 

.t!ethods"ci .Applied to_e~ah eornar•of-each screen mJ.l be a removable contact ·- , ' ear thro~h' which th$ circuit is carried to the -vdndou frame by means of a 

·corresponding latch1 -in other uords,.there rrill.·be four-latehes on ·the .i'rlll?l9 

· .. :· 

.. for· eaoh screen end tho -~creen can be ~ily removed .for mshing windows, ate. · . The latches and ears ·aa well as carrying tho electrical. circuit to. the.screen 

provide. meoMriical supporli for each screen. till. such exposed screens are to 

be·· painted at Our factory. t.o .match the present colo:r of paint OD·thc t'dndow · frames. This .same type 'screen construction is proposed for the protection . of door stirfaeoo& ·. · .. . ·. 

·Contacts 09- Doors. ~d t1indooo 2 . 

Approve4 contacts (S~ phOtographs )17, )lB, ,319, 3201 '32l. am )22) are tO be 

uaed ,a·a· nindow cont~cta and door. contactso · · 

, E. P. · C. BURGLAR ALARM ~'YST.El! iJITH -ADDITIONAL FEl\TURES " 

.·Nor ·INCLUDED ··m TilE .sP:scr!l'~cATioNs 

'.T, 

~\ l" . ' ' '' -; 

.The f oll.ouing arc SOf\'.!,IO, of the inain fea.turec; which v.e strongly recommend to .·· · · .·· -· .-.be incorporated ,in .the syotexn to be inet8lled in ·order ·to proVido the high-.·· 

eat possible qualitf protedtion · obtain@loa _ - '-. ' . . . .. ' 

'· 

, (1) . It ·13 rooO.~ndad that·,the E.· ~~·.C• 'System which uaes both alternat~ · O\UTellt . .fran btdlding ~~vpr supply as .Well Gs dry cell.a for its oper-

&tion be used, J;.. special circuit arrangement provides for nomal. · operation t;)t the 63$.~ ~ the btiilding supp]¥·.and the .. drf 'cells 

. · . \ ' 

·: -... : 

, Ir•• 

_ are used as atand-by pouer to be· used only in· ec.ergenciea 1n case. . . ·. of' teUure ·in b\lilding power .supply or an attempt to defeat the system by disconnection 'of the bulldin8. p0wsr aupi>J3 to tho system. This 

circuit is so arraneed that there :is no norP...al. ·drain on the dey calla, 

this lteepa the' dry ~ell ta energy .at ita f'llll. operatfna capacity .at. 

·. _ all times• .There is no dallgor of' :the ayo~cmi tailil'lg to ·oparow1 due · to power t~ilure1 ·in _case· of an attack• - . ·.·. · · · 

Tho ndvantages~of: ·us~e two sourc~s ·of ,po.Wr~ supply- such as recO!!mellc!Gd . 

is app_artint uhen eomvnrison' is made to a oyst0m nhich us.es drt cells 

only as a p000r ·source. Dey ·eel.ls _suQh ._ aa. era- ordiilllrUy used, genernl.ly have the ®p~ei ty for· operating ·the system. tor npproxi.mtl tely one year.· · · 

when no sl.arrus ~ experianocdon.the syatGmo,Hornwor,. aa'tha batteries .-)le~,. their capacity 4(Jcreaaes and_ it is poss.ible ~hat evon though the .· 

· · · batteries maintain .the protection circuit in ~er- operating condition 

there ~ not be sufficient enorB'Y to. operat~ th_G al.arm bells upon attaoke .. ' . . ., . ' ' .... . . ' ' 

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Fai+ura ·of· tho. batteriQa ·from b3tt0ry. opa'r3tod syatarJS at t~ time· . . of clo~ne Would prewnt the use of . the. system until such bntteries . . . were replaced.·. Also failure of. the protective circuit batteries · . durine the protqcted period would°'causQ a false slam ilncl ttie system 

. WOuld 00 out. Of· service until. the b.'ltt~ri~ rrere. replaced.· · - . . . . . ' . ' . - ' . . 

. (2). SystooiS ·~perated from dry calla .alone uauall.1 do not aro.ploy moro 

'than 5 milliamperes drain\ in the protection circuit. 'l'hiS amount · of current -is nometimes iriautficient to braak dom oxides or amall · pZlrtielas of dust mrl.ch may· collect on \lindow mld. door contact . mirfaees1 ·thus'the preaeri-co of auch dust ·or oxide in aey one contact 

would, prev'ent the use -of tho syatem until tho tr.ouble we.a locnted 

and renedi~, ·The E.· ·p •. c, system;, because oi' ·the use of building 

power whioh dooa riot. reqtiire tha eonaervation of battery anergy, . ' ,. ell!l ·ez!lpl.oy up to ten milliamperes in. ~he protection circuit which . current is mach more effective in breaking down the oxides and small 

. dust .particles_ which normaU.v .collect on. the various contact- surfaces» 

thari .the sLmller eurrenta necassaril3 used. Vlhen . batteries al.One are 

used.. This. toature . alone tonds t.o r.educe the number. of times that . it ·maY be irn.Possible ·to pl.B.ce.' the 'system iti operation at. clo~ipg 

time and· tu~her pro'Vents ·false alarms after .. the· system ie set. - .. •. -, ', \ ' 

. e .· .· I (3). The E. ? .• c~·: ~ahgement 'of float1?lg the .dry. cell .b'.1tteries i.n the 

circuit. conoiata' of' .a si.Bnnl tra·narormer pm;er umt containing a · 

·.transformer: '11th :·12 volt and 70 volt. ta.pa and a copper oxide. tun - ,. · wevs. ~eotifier. with:fi.ltering resiritera nn4 condonaers. The l2 volt . roct.ifying supply is used t,o ·float . the· batteries and to supply normal , current to ·the s;-stern, while the 70 volts A. Co is used to operate trqUbl.e locatinB deVioea later described. . . .. '' ' 

,, . · · · (4) ' The·-. ~uble l~cation .featfu.a is· of. ext~ inportance 1n view· of the · ·. . ~act trot it makes, it. possible to operate the system in regular day-. 

. .. in end da:r-out .service with the min1nUm. of operating difficulty •. . ;. ''. · ~e tr¢uble locating f:eat\lre makes, it possible to it.Im.odiately lee.ate · · · Uiproi'erfy 010$.ed:windmm or doors and .other forms or trouble which · . preve.lrti rend,y and conv_enierit closing· ~ · setting of thO system. ' :. ' ' ' ' -; ' .. 

In .this ~i~'1.lar inSt~l.l~ti.ori'·uhe~ there will. be a comiderabl.a 

amount of wall protection mu.de irlWlediato]J' inaoceaeible_ due. to the ... wallboardaovering, it is obyioua th!lt a broken wire or other fault 

inthe,concenled wirina would· introduce unusual difficulty'in' locat-. 

ine the exnct point of the fault •. It ig our experience with regnrd · ·, · ' to the us o . of electrical· wall. protection that regardless of. manu- . ' · · faoture; operi cir-cuits somati;nes· occur. ~ are n serious conaiderat,_on- . , , in the . ma.intemmoe of tne syatem. i :· Those openings sometimes occur . ·· · '.: duo to .. the nortwl. set.tung, c building· vibration, . impaet or office · · · ·: 17Umitura, c:hairs, etc. · · · . ·~ 

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'':,'...'·.·. ·, 'REF ID: A416l 63S ·. 

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C5l ... , E.t P. c. ·provides a special circuit arrangenlGnt very Dim_ole but 

·effective trhidh makes it poseible to place Slllflll Neon llghta ·in 

the protective wiring nt vorio\W intervnla, suCh a8 at each group 

o~ w1ndat7s and in each section of h1Bl.l protection, so toot' when .an 

o.,rr. signal eo.nnot be obtained at the loeat. contn:-ol panel, a ' 

_trouble 10eat1ng si:?i.tch supplied in the local control panel ean be 

'·. · :.i.m!:iediate4r oparated and the Neon lights can be· observed throughout 

the~protect(?d.area. These lights can be arranged near the ceiling 

e.o'that it ie only necessary for. the operator to observe the lights . in proper seque?tco until a Point · is reached whero an unlighted lacip 

. . is found. Tho def active portion of' tho ayatem tmuld then be between . th~. lnat ligh~d larap · r.md. _the !'irat unlighted lamp, Shoul~ the defect .' 

··•·be found to ba · ~·.a · uall panel; .. that ··~nal · iS immedio.tel.y . idantif ied · 

·and the trwb+o is irrunedio.tely iaolntGfi for repirl.1'11 . . . . ·, :' 

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: -It ia obvihful. that this ~ethod of trouble lol'.<"ltion elind.nntea many · · aouroea of nnnoyunce and inconvenionae in. the operation of tha system ' am., .t"urt.her oasures a rni.iW:rum of time that the system might not be 

. · · ~vailable for use. As can be· seen from the nc.coJ2ipaD3'ing circuit , ' diagrafl, tho source oi supply fo~ the· Neon. leaps is obtained frott the 

·70 volt ta pa in the porrer supply tranaf orcer. , The Neon light method 

of locating o}'Jenines is the lntest .ri.rid most e.ffieient method designed 

·and utilizes reeont :scientific advances in electrical engineerlng9 

: ·.The Ueiori u«ht method of locating openings and trouble in connection , ;rlth the protective ,Cir¢uits .!o Sn axclusive .and patented feature used .' · in eonjunCt,ion with E. ? •. c~ syatcms only. : .' · · · . · · ,· ·. · 

E. P11 c. :,~£weea ~o rurrilsb and instill all ~coeseorires, davieea• aqui~ .: ment, Otc. for: the addition o~ the aoove:dascriOOd d<.mole power source · •. 'mid, Neor:Lt:roμbla locating system for the sum of 'i'\iO HUNDRED. DOlliutS 

: ($200.00),. irl addi~ion to ~he. basic bid. ·, ' ' ' ' ,· i ' ,' i .•, •..•.• •· ,, 

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"·I 
.. ---- - .. REF ID:A416163B 

February 8, 1940 

SIGNAL C_ORPS -ourLINE SPECI:F'ICA.'rIOHS 

(Cons ti tut:i.ng RESTRICTED DOCU1:ENT NO. 2, attachGd to and 

forming part of OCSIGO. INVITATION l~O. (R·-4875) 'w 1049-40-1.) 

RESTRICTED 

Notice. - This document contains information 

affecting the national defense of the United 

States within the meaning of the Espionage Act 

(u.s.c.' 50:31, 32). The transmission of this 

document or the revelation of its contents in 

any manner to any unauthorized person is pro- -

hi bi ted. 

Sectio_n I - ~neral Conditions: 

Description -----~~----~-·~ of Specifications; 

Drawings Required of the Contractor 

Instructions; 

Material and·Workmanship; 

Final Inspection and Test; 

Control of and Access to Work; 

Liability for Damages; 

Compensation Insurance; 

' Notice, 

Scci;:ion II - Special Cpndi tio~: r 

Federal Tax; 

and Installation and Maintenance · 

Certificate Reference Growth & Production United States; 

Patents; 

Eight-Hour Law - _Convict Labor; 

Bonds Required; 

Termination when Contractor not in Default; 

Descriptive Data with Bid;, 

Experience and Facilities; 

Statement of Facts; 

Prevailing Rates of Wages. 

Section I -.General Conditions: 

~ 

I - 1 - De'scription of Specifications: These specifications cover the 

requirements of the United States Signal Corps for the supply and installation of a complete local electric burglar alarm system in Rooms 

3335 to 3337 inclusive and Rooms 3341 to 3350 inclusive, Munitions ·Building, Washin_gton, D. _C., including the corridor within this area. This 

system shall be of the doubie-clo.sed circuit, fully supervised type 

(A.D.T. or equal). 

.. .WS'l'RIC'.17.1!;:0 

Deputy Associate Director for P1:nd ~ecords 

0n.?l>t~D~O ·' by _ Sheet l of s sheets. ' 

Oedass.ified by NSA/CSS 
J 

REF ID:A416163B 

REST"itICIED c ------·-

SIGNAL CORFS ·OUTLINE SPECIFICATIONS 

·(Cont.) 

Section I"'- Genez:al __ Co.ndi_t_:iqns: (Cont.) 

I - 1 - Description of Specific8.tions: {_Cont.) 

Scope: 

SHEET NO. 2 

\ 

The rooms designated shall be protected by means of :burglar alarm screcnE 

on all windows,, exterior doors and walls; - all to bo ins~alled as hereinafter described, so that when protection is established, any a.ttempt. tr 

enter the rooms th:r,ough protec.ted points or any unauthorized t8.!Jlpering · 

with the protective wiring Will automatically cause an alarm gong to rin~~ 

and an annunciator drop to operate in the alarm units in the Guard'Room, 

Munitions Building, on fi::rst floor and 'in the Messo.ge Center, !1luni tions 

Building, on thif'.'d floor. Operati9n of the drop will:.indicate the roo111 

into which entrance is being attempted or whose protective wiring is 

being tampered w1. th', before acc.ess to the room is obtainable. · J 

Each suite of rooms a·s U...".lderliried ubove shall be operated under one local 

control u.nit and shalJ.. go considered as one'protective area, a total of 

two areas to ·be coverud in this project. · 

All equipment and appar~tus shall constitute a unified system for the 

satisfactocy operation of which one manufDcturtir shalU:.. be rcspohsi ble. 

' 

Wires & Cables & Conduit: 

CJ 

i ' \ 

Wirings inside or the rooms ,specf:hed !;lhn.11 consist of iridi vi dually insulated conductors or cables of a ,,chnra.cter and size recommended by the 

mruiufo.cturers and approved by the contracting officer. Wiring from local 

control units to_ alarm units to be of double-c~osed circuit fully supervised type in lend-covered, non-coded ccbles. Wiring from room to room 

across cori-idor·s shall be ir.closed in1 galvanized or sherardized conduit. 

All ci~cuits shall be so arranged and instuJ.lod that the breaking or 

shorting of the protective circuit or cutting of the protective cnble 

will nutomaticul],.y initiate an alarm nnd indic~te fn the alanli uni ts the 

protective circuit or circuits in trouble. , 

Room Protection: 

All outside. windows shall be fully protected with remov(...blc double circuited screens and contacts. Tho w~~dow screens ure to be applied direct 

ly to the inside of the sash and m~t be so desisned-thqt the sash must 

be closed before the protection crui be established. The screens n~ust be , 

such as not to interfere with the opeuing and closing of the windows 

witho~t remov~ng screens. Tho circuit shall be so arranged that there- · 

after any, unauthorized opening of tho sash will initiate rui alarm. Walls 

and partitions, except b_e_ams and coJ,.umns, shall be fu.J,.ly protected with "-

permanent double circuited screens. All screens to provide continuous 

electric circuits not over 4" hpart ,' the breaking of any one of which 

will initiate an alarm. All circuits on walls shall be covered by suitable ~all board, unpainted. 

' RES.TRIO TED 

\ 

Sheet 2 of 8 sheets. 
-: ~ \ -

REF: ID :A416163B "-

': 

. . 

RESTRICTED 

SIGNAL CORFS OUTUNE SPECIFICA'.VIONS 

(Cont.) 

Section I - General Conditions: (Cont.) 

I_- 1 - Descri tion of S ecifications: (Cont.) 

Room Protecti ~: Cont. 

SHEET NO. 3 

Screens and contacts similar to those on· the windows sh.:i.11 be applied to 

the inside of the doors leading into the protected room, screens to cover 

entire surface of door. 'A light will be mounted in each of the two areas 

so that when the system is turned on n check as to the operative condition 

ot the system can be determined; A suitable switch is to be provided to 

turn this light off after check has been made. 

Local Control Equipment: 

I 

A single local control panel shall be installed within each of the two 

protected areas near entro.nce• Eac4 panel shall house switch, supervi-'· 

sory meter and other equipment necessary to control its respectiye protected area; all enclosed in cabinet. In addition> a lock switch shall 

be installed at each entry door to the prqtected·areas. Upon e~tering 

an area, lock switch at door must be operated, followed by operation of 

switch in loc~l control panel to disconnect protection in its respective 

are~. Alarm should be given whenever anyone enters even with proper key. 

Leaving the area, lock switch at door is operated nnd switch in control 

panel set for protection. Tamper springs must be provided on cabinets. 

AJ-arm Units: 

These units shall be located in~he Guard Room, Munitions Building, on 

first floor and in the ~essage Center, Munitions,Building, where desig- r - nated. They shall consist of necessary .control apparatus and a drop for 

each area as visual signals. In addition, a 6" alann bell and trouble 

bell shall be included at each. All cabinets shall be tampered and shall 

include necessary dry cells for the operation and supervision of the system. The alarm bells shall have tGlllper proof contacts so that signal 

will be given if attempt is made to disconnect t~e ,bell. This installation shall comply with The National Electrical Code and the Fire and 

Building Regulations, of the District of Columbia. · 

I 

I - .2 - Drawings Required of the Contractor and Installation and Main.tenance 

Instructions: At the time of completion of this installation, contractor 

shall submit for approval and in accordance with the general p~ovisions of 

these requirements, complete drawings ·in quadruplicate of the various items 

and units required for the installation, complete wiring diagrams_showing the 

manner of connecting and installing ~ach of the various units and general 

instructions for the regular mnintencnce and inspection and tests of the 

system. 

RESTRICTED 

Sheet 3 of 8 sheets •. 
• 

.. !1~ '. 

. REF ID:A416163B 

\ 

RESTRICTED 

SIGNAL CORFS OUTLn:JE SPECIFICATIONS 

·(Cont.) 

Sec.ti on I - General Conditions: (Cont. } 

SHEET NO. 4 

\j 

I - 3 ~ ~aterial and WorkmanshiE: All the m.~terial used in the construction of 

the npparatus'shall be selected ns the best evailable for the purpose for which 

used, considering strength, conductivity, durnbility, and the·best engineering 

practice. All work shall be done and completed in a thorough workmanlike man!'h~ 

and shall follow the best modern practice in the manufecture of high-grc.de muchinery notwithstanding any omissions from these specific~tions. All work sbQ} 

be done by mechanics skilled in their various trades. All parts shall be IllD.ae 

"accurately to standard gauge wh~re possible so as to facilitnte replacement np.c 

~epair. All equipment shall be of n type which is commercially s~andard and 

which h~s proved satisfactory in service over a period of yeG.rs. 

I - 4 - Final Inspection and Test: When the install~tion has been completed, 

the contractor shall furnish a responsible technical expert to give the installed system one thorough checking and complete testing c.nd adjustment. 'Ille 

system shall be guaranteed for a period of one year against me,chanicai defects. 

I - 5 - Control of and Access to Work: The work is entirely under the control 

of the contracting officer and he or his authorized representative shall have 

access to same at all times. 

I - '6_- Liability for Drunages: The contractor will be held respo~sible for all 

do.mage to -the-work under construction of ..whatever nnture. He will also be held 

responsible for all damages whic~ may occur to persons~ property, ~nimals or 

vehicles from, want of proper.safety precautions Qr ~rom any accidents arising 

from defective apparatus or any negligence on the part of himself or his em- ployees~ \ 

I, f 

I - 7 - Compensation Insurnnce: The contrActor, shall provide adequate work-

,' men's compensation insuri:mc'e i'or all labor emploJred on the project who may 

come within the protection of such lc.ws and shall -provide, ,where practicable, 

employers' general' liability insurance for the benefit of his employees not• 

protected by such c~mpensation lnws and proof of such ~nsur~nce shall be given 

to the contracting officer to his sntisfaction• 

' . I - 8 - Notice: These specifications are furnished with the explicit under-, 

standing that whan Government. drawings, specifications, or other data are used 

for any purpose oth~r than in connection'with a definitely related Government 

procurement operation,, the United States Government thereby incurs no responsibility or any obligation whatsoever; and the foct that the Government may have 

formulated, furnished, or in any way supplied the said drawings, specifications 

or other data is not to ·be regarded by implicntion or otherwise as in any manner licensing-the holder or-any other person or corporation, or conveying any ( 

rights or permission to manufacture, use or sell any patented invention that 

may in any way be related thereto • 

. RESTRICTED 

J 

Sheet 4 of 8 sheets. 
~Rii~JJA416163B 

SIGNAL CORPS OUTLINE SPECIFICATIONS 

(Cont.) ~, 

,...,. -. '··~ . "' .. Section II - Special Conditions: ,j ______ ......._ _ __, ________ _ 

/ 

SHEET NO. 5 

II ~ i ~ Federal Tax: Prices bid herein include any Federal tax heretofore 

imposed by the Congress which is applicable to the mnterial on this bid. If 

any sales tax, processing tax, adjustment charge, or other taxes or charges 

are,imposed or changed by the Congress after the date set for the opening of 

this bid e.nd ma.de applicable dire~tly upon t)le production, manufacture, or ~ ·-

sale of the supplies covered by this bid, and are paid to the Government by 

the contractor on the articles or supplies herein contracted for, then the 

prices ~amed in this b~d will be increased or decreased accordingly, and any 

amount due the contractor as a result of such change, will be -charged to the 

Government and ent,ered on vouchers (or invoices) as separate items. 

The prices herein do not include any Federal taxes from which exemption is 

granted, or as to which a credit or refund is.provided for under the provisions of Section 401 of the Revenue Act of 1935 (Act of August 30, 1935; 

(49 Stat. 1014, 1025-1026)) as amended; nor any tax imposed by a state, 

county or municipality upon the transaction of this procurement of these 

" materials. 

II - 2 - Certificate Reference Growth and Production in United States: It is 

hereby warranted that in the event award is made to the undersigned the unmanufactured articles, materials, gr sμpplies furnished the United States will 

have been mined· or produced in the :United States, and the manufactured articles, materials, and supplies will have been manufactured in the United States 

all from articles, materials, or supplies mined, produced, or manuf~ctured, as 

the case may be, in the United St~tes, except as noted below or otherwise indicated in this bid. 

Bidder's Signature ------------

II ··- 3 - J'~:t;e_nj;~: The contractor sb.a.11 hold and save the Government, its 

officers, agents, servants, and employees, harmless from liability of o.ny 

nature or kind, ' including costs and expenses, for or on account of any 

patented or unpatented invention, article, or. appliance manufactured or used 

in the performance of this contract, including their use by the Government. 

II - A-_~ Eight-Hour Law - Convi.ct Labor: (a) No laborer or mechanic doing 

any part of the work contemplated by this contract, in the employ of the· 

contractor or any subcontractor contracting for any part qf said work contemplated, shall be required or permitted to work more than eight hours.in 

any one calendar day upon such work nt the site thereof. For each violation 

of the requirements of this article n penalty of five dollars shall be imposed upon the' contractor for each laborer or mechanic for every calendar 

day in which such employee is required or permitted to labor more than eight 

hours upon said work. and all penalties thus imposed shall be withheld for 

, RESTRIC'l'ED 

Sheet 5 of 8 sheets. 
. \ 

REF ID:A416163B 

RESTRICTED 

SIGN.AL CORPS OUTLI:NE SP!t.:CIFICATI ONS 

(cont:}"-

Section II ~General Conditions: (Cont.} 

II - 4 - Eight-Hour Law - Convict Labor: (Cont.) 

SHEET NO. 6 

the use and benefit of the Government: Provided, Tho.t this stipulation sha.11 

be subject in all .re$pects to the exceptions .1mi provisions of the act of _ 

_ June 19, 1912 (37 Stat. 137), relating to hours of l~bor. 

( b) The contractor sho.11 not employ any person under30ing sentence of impri so.:-.-

ment nt hard labor. 

II - 5 - Bon\is Required: . . " , "-

Pc.yment Bond: Payment Bond, with a surety or sureties s~disf2ct6ry to the contrncting officer for the prote~tion of all persons stipplyi~g labor ~nd mut0rinl in the prosecution of the work provided for in this contr2ct for the use of 

each such persons shall be furnished herewith in the sum of fifty percent (500fe) · 

of the total considerntion of this contra:ct. 

- I 

Perfo_rmanc~ Bond: Bond, with surety satisfactory to the contracting officer, 

guarc.nte-eing the faithful performance of the provisions of this contl'C1Ct shall 

be furnished herewith in the sum of ten percent (10%) of the toto.l consideration of this contract, 

II - 6 - Termination when Contractor not in Default: If, in the opinion of 

the contracting officer upon the approv~l of tbe-Be'cret~ry of War, the best 

interests of the Government so require, this contr~ct mcy be terminated by 

the Government, even though the contr~ctor be not in default; by a notice in 

wr!ting relative there~o from the contracting officer to the contractor.· 

In case such notice be given the contractor this contract shall terminate, 

ipso ~ncto, upon the eiving of said notice. Upon such termination the contractor shall forthwith deliver to the Government- f .o. b. factory, in their 

then state of completion, '.lll' articles, spare parts, drawings, and o~her 

information and things called for herein, not previously dcl~vered, and all 

work in process, materials, and f~bricated parts ncquired'nnd/or produced 

by the contrnctor for the perforin<tnce of this contract, c.nd the Government 

shall then forthwith .pay the contractor all amount)s, if any, remaining due 

and unpaid under this contr~ct for completed ~rticlos, spare pnrts, drawings, 

and other information u.nd_ thin5s called for herein, therctofor completed, 

delivered, ~nd accepted by the Government_; nnd the Governm~nt shall also 

forthwith pay the contractor for all partially coriipleted ar~icles, spare · 

parts, work in process, materials, f::tbricnted parts, drnwi-pgs, and other 

information nnd things to be so delive~ed hereunder, an a.mount to be computed 

as follows: 

(a) There shall be determined by 11n ~:niui t conducted by or for the contracting 

Jofficer, the total,net emount of all. expenditures and obligations mo.de and/or 

incurred by the contractor under this contract in designing, manUfacturing, 

and delivering said partially completed articles, spare parts, work in process, 

mnteri~ls, fabricated parts, drawings, and other information and thin3s so 

delivered hereunder. 

' RESTRICTED 

J 

Sheet 6 of 8 sheets. 
.... REF.ID:A416163B 

SIGNAL·,;QQRPs OUTLINE SPECIFICATIONS 

(cont~r 

Section II - Ge_n\:l!'al Conditions: (Cont-) 

SHEET.NO. 7 

II - 6 ·· Terminction when Contracto:r. not i~ Default: (Cont.) 

(b) The contractor anci tho contro.cti'ng officer shii"ll agree upon an estimate, 

based on the foregoing audit and any other pertinent &~ta, of the net cost to 

the contractor. of fully compl'eting and delivering said parthlly completed 

articles, spare parts, drawin3s, and other information and thiDGS calJ,.ed for 

herein, ,_o.li in accordance with the requirements of tb is contract 'had it not 

been terminated, including in such estimate nll cost previously incurred under 

this contract in designing and manufacturing said partially completed articles 

spqre parts, drawings, nnd other information and things, as well as those 

costs which would be required in the future for the entire completion o.nd deli very thereof. In the event of the failure of the contractor and the contracting officer to arrive promptly at such an agreement, said estimate shall 

be determined in the manner provided in this contract for the adjustment of 

claims and· disputes. 

(c) The percentage which the foregoing item (a) is of item (b) shall then be 

determined and a SlJ.Ill of lmoney equal to that same percentage of the total contract price (plus or minus any additions or deductions for changes), of such 

partially completed articles, spare parts, drawings, and other informati~n 

and things, had they been completed, delivered, and accepted in accord.a.nee 

with the terms of this contract, shall then be cot1puted., 

(d) The total of all payments, if o.ny, previously made to the contractor on - ' account of such partially comp].eted articles, spare parts, drawings, and other 

information and, things, shall then be ascertained. 

( e) The contractor shall then be paid -the s'ame sum of money computed in accordance with (c) a_bove~ less the total of item ('d). 

Upon the moking of said payment all obligations of the Government to 

make further payments or to carry out other undertakings hereunder shall 

cease forthwith and fo~ever, except that all rights and obligations of the 

respective parties under the articles, if' Ellly, oi' this contract applicable 

to Patent Infringements and Reproduction Rights shall remain in full forceo.nd effect. 

II - 7 - Descriptive Data with Bid: Bidder shall submit with his bid the 

following data: 

(a.) Complete descriptive data of the equipment offered. 

(b.) A complete schematic diugra.m of th? proposed,circuits. 

(c.) Such theoretical and practical d~ta as may be necessary 

to determine fully, without further reference to the 

,bidder, the excellence of the equipment offered and 

the need for any unusual circuit or applio.nce. 

RESTRICTED 

Sheet ? of 8 sheets. 
JI 

. REF ID:A416163B 

RESTRICTED 

SIGNAL CORi?S OU".rLINE SPECIFICATIONS 

(Cont.) 

' 

Section II - General_Con_ditions: (Cont.) 

SHEET NO. 8 

II - e .- Experie'nce and Facilities: The bidder may be required to furnish 

satisfactory evidence of experience and facilities for handling the work and 

may also be required to furnish 0satisfactory evidence that he has adequate 

shops, plants, facilities,_ equipment, financial resources, business and technical org~nization~ and working capital to begin t~e work properly and prosecute it vi~orously in such ma,nner as to secure completion within the time 

specified. · 

It - 9 - Statement of Facts: The Signal Corps reserves the right to require, 

prior to the award of the contract, a statement of facts in detail of the 

business and technical organization of the bidder available for the contemplated work including financial res'ources for such part of the work to be 

used, and experience of organization in construction of comparable work. 

The Signal Corps reserves the right to reject any bid, respecting when the 

facts as to business and technical organizations, financial resources, or 

experience, compared with the project bid upon, justify such rejection. 

II - 10 - Prevail-l.ng Eate_s of Wages: ·The Act of Congress (Pub'lic #403, 74th 

Congress), approved August 30-,- 1935, "To amend the Act approved March 3, 1931, 

relating to the rates of wages for labore~s and mechanics employed by Contractors and Subcontractors on Public buildings," applies to this project and in 

accordance with the provisions of said Act, the following schedule of minimum 

hour wage rates has been determined by the Secretary of Labor to be the prevailing rates of wages for the crafts specified to be employed on the-installation of a Protective System at Washington, D. c.: 

CLASSIFIOATION OF LABOR: 

Carpenters, journeymen 

Electricians 

Laborers 

Painters 

- J 

RA'IES PER HOUR 

( $1.56-1/4 

1.80 

.75 

1.57-1/7 

Labor Classes Not List~d - Any class of laborers and mechanics not 

listed in the preceding paragraph, which will be employed on this contract, 

shall be classified or reclassified conformably to the foregoing schedule. 

In the event the interested parties cannot a3ree on the proper classification 

or reclassification of a particular class of laborers and mechanics to be used, 

the question, accompanied by the recommendation of the contracting officer, 

shall be referred to the Secretary of Labor for final determination. 

RESTRICTED 

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