1,591,948 I,' arc@ attt,-I-iecl to the corier post 1-,I, then ,,t'L-ach the half -.ncl fiill section slabs A ancl C zespectiveIA7, it i-i-lit a,,,-Ies to tl-ie first s!al,s attached. Fro,.i-i these two st,,irtino1) poiiits. ftill sizeci slabs a-,-@e attacli,,,cl oi-i I)o4Lli iiiner a,,id outei, i'@ices ii-itil the ecplier'is i-eaclied ii-liere I't is ,t lialf @:ec'Lioii on oiie inner Piid outer ivalls ivhere ivith ,O "lie coi-iier post -,s it is reaclie-,I. Tl,e iiiipoi-ta@,.ce of the anale-el,.iiiip 7 I)ecoiiies :ipparent, it is coiiq-ideu(,,d that it jil"llies it I)Oss@1)1,e AVIL siiiole bolt to tl-ic iiincj, an,-I, oii togetber, @traia s @,,@s 15 ivlille, at tl)e saiiie tiiiie n(-iiig the ai)iittiii@-r elicls o'c the @,,djaceiit ilo-o firiiily to(@-@tlieitThe reiiiforceiiie-iits ]-,3 are iiii,,)ortaiit,. is they gli-e the required streiigtl-i a@ the poiiit s 20 ivlaere the CILlllp presstire coi-nes. TI-ie ed(res aiirl insicle faces o'l t@iie t iiiav be coateci Nv;ltli ,i, inoisture-proo-l@ mater;ai stiel-i ,,is asplialttim, @-vhene@-er deemect iiecess-@ry. 25 t The slabs iiia)- be iiiaOLe qtii-te laro-e. I)u ii-iienever it is iiecess-,rv to h,,ive more thaii oiie slab iii he,,ght, the s!Ltb is pro-@-ided -,Lits ends ivith flanges the sqiiie as the flaiiges 2 at its si-,-Ies, aiid these addition,.il flan,,)@es 30 -ilso li, ive seiiii-lioles Pi-id coiiiiter'@,,ores j@ist tl-ie saiiie is iii the side flai-i,yes; ,ind the ,oil-,is @ii,e st@i@-yLyerc,-,l liorizoiitally as ivell as i,e-,-,ticall@-. Special sizes aii(I sliapes of slal,)s iiiai- be ivli(@re Avl'ndoiv an(I cloor fr,,tiaies C(ille, I)ut in ai-iv ei-eiit, the saiiie metliod of connec,tin,()@ the i)arts 'Lo(_- retlier is emplo-ved. The projectiolis -), oi-i the iiiiier faces of (pposing slabs ,ibiit i-lie, flan(-Yes oii the oppot, .10 site Avtill. ancl tliiis stren,)@tlieii i@lie slabs it ceii,ti,es, A-viiile the chaTin(,.I' I iiig or cessii,g of the oii their ;niier sides foriiis aii- I)e'-IA7cc@n I-lie iiiiier ,iiid otiter ii-,ills, 4i5 aiid tliiis l,@c-@litei-i-, the Avlille nt 'u-Iie i@iiiie tjiaie it, i @ne iioi-i-'coii,-tiietor. T--I@117ill@4 (le-,cribed my iiii-e.-itlop-,Ai-liai-. 1 clatiii as ii(,i-v aii(I desire to s(,eiire I)v l,ettei-s Pateii'i is:-- 1. fn (levices of the clian,,ctei30 'Llie eojiibiiiation in i N-@-all, o-f ol)posln,(,r ',)uilding slits 1)1-ov'ded iii theii, ii-ieetiiig ecl(,,fS ivith tralisA-ers,? i,eceq-ses teriiiiiiatin(y @it, tlielr outer eiids in larger re(,esses in the face.- o-i' tile the recesses iii the ed(ye ol' i (-@Ial) Lr-eaiiged to Avi-tli those in the ecloe of the -@idjaceiit slab, an(I teiiig coi-i-ipleii,ieiit.trv tliereto, the I)oti-oiiis of the ti-,-o parts of eac@li coiiiplenieiit,,ii,,@, recess iii the slab f-aces beiiiy irrajic-,-ed t@ iii ans@le fac60 iiig outivardlv"-'from e@nleii o'l,lie,i,, ,t-claiiij)plate for eacli complementary face-recess, said pl@ite liciviii,,T its oncls disposed at an aii(Yle to eiortae said ai-icrlilar bottoi)--i )-arts of .11d I-Iolts p,-,sE nc,,-essarv to place, to en-eii ul) the the i,ecess, I 05 transi,erse recesses ;iiia, throtio-li said s,,tid f @ce-rece.@-ses ar@d 'i (,,il)'Led "-o press Falcl eliinps into en@-a<,-e.,iien'- i-vitli s,-,Id an@ylilar recess bottoms, to clraiy eich otlier the t-%Yo slabs contaii-iin@i coiiiplei-tie.,itari@ recess. T-11 d(@@@ices of 'Lhe cliaracter descril-@,c@d, 70 tl)e coiiibijia-lioii in a Avall, 0-9 opposin(- I)uildI -- iln-- sla'--s cl'sposed 'li ed--e to ed,)-e en-a,,,-c,- t, @n in Z-- iiie,,it AY;@ii eicli otlier ancl provicled in tlieir cd,)-es witli ti,aiisverse recesses teri)-L;nit'ji-- at opter encis in lai-(,er I-e- 7.5 cessec; iii the otits:(Ie faces of the slabs. the, r(,,(-esses in the ecl-e of a slab I)einy arra@(,,ed 'to re@);:Ister 1-viti-I 'Lhose iii the -Ldjacent ineetii),- ed-e of flie iidjolliiii(y slab, ind I)ein(-r tn n coiiip'lei..-@eiita-i@i@ thereto, the bot'l-oiiis of the 8() ',N@-o Ijarts of eieli (.,oiiapleiiieiitari- i-ecess iii t@-ie slal) i-',,ices b-,iiia ii@ran(yed at anrles f-,ic2n iiio- o-Litii-,irdly 'Lroii@eacli othei-; @i eliiylp I)ei@it, to eii@zaae each of s,,tid an(Ttilar bottoii-is, and L-,)It-s I)assii-@g @Llai-otiali the re(ristering t'rans- 5 verse reces@es of opposiii- slabs to draiv said t, slabs e,-,ch otlier, saict bolts being also -,Lclal)ted ,it the s,-tme tiliie to press the clamp's iii'Llo 1)indin(y eng,,.gement -v,,ith said angular @-;ott(-,liis: ivlierebv the bolts not onl3, I)iild 90 the ol)posing slal)s togetlier biit also simultaiieotisly, tliereii,itli pi@ess the meetlii(r ed(,es of -(Ijoliiii(y slabs into abiittin(y engaceiiieiit ivith eacli o'L-,her. '. In devices of the character descril)ed, -9 i5 0 the coiiibiliatioii ivitli slabs ,irraiiged to fit I'n edge to edge -ii-ageiiaeiit ivitli eacli otliei.- and pi-oi@ic-Led )-vitfi i,e(,isterinc, recesses teriiiiii.,ttin,)- ii- 1,-,l,-ei- recesses oli the outer ftees of the slat-s. said lar-(-,r re@,-esses liai-iii- in- 100 @@iiiied idottonis faciiix froli-i e,,Icli otlier It aii,-Ies, of claiiip-plates adapted to iiito said la,@-,Yer .,ecesses, .tild 11,117- in,,). t],@c,,ir eiids I)eiit ,,pproxi-mately at rlfflit ano-les to !-lie @iii(rtilar bottoms of .9@ild 10i) 4-. -7Lii cle@-ices of the cli@irict(,r desei-II)ed'. ,i i"lat face i)iiilcling slal) havin- registerin(" opeii,.no-s -'L'o" seciiriiig-]--)olts ancl cl@,iiiij)scooi--.ei,:ttlnF said pai,ts I)ein(, ti-- 110 to s'iiiiilt,,ineoilslv press t-lie III the di-(,,ctioii of tiie lon(,itti(Iiiial ex,@ent of tll(" [)oils @iiict also IL-o draiit, tlieiii toivaud ea(@li o't.iier iii a cilrectioii at rl(,-Iit iii(yles tliei-eto. 5. Iii dei,ices of tl)e cliai-ac4Ler J15 -,Ia'i)s liivi.lig t'tieli- .td'oiniiicy ed,,e@ i)lli, i i-ecesses at Llieii, outer eiids in eiilar-ed reces.@es coiill)leiiiei-it@t-i to each other and iiix-ii-ig inclined I)ottoli@s faciii(,r, out%A-,arcilill froiii eacli other. and claiiij),@ on -ai(I bolts i@al7in(y their faces correspondinaly incliiied toivard each ot,'iier. to cooperate ivitli saicl iiielined bo'Ltori-as of ti-ie registeriiig coilipleiiien"-,,irv i,ecesses to draiv the slal)s lia-%7ing 12,3 s,@icl coiiiplementary recesses into al)iitting en(yageiiient ivith elch other. 6. Iii devices of the character described, a ],,uildiiig wall coiistructed of similar slabs 'iield iii foc@ to face en-agei-nent with eacli 130

1,591,948 otl-ier, one to foriii the inner side of the ival'i, and tl-ie other tl-ie otiter side, saicl slabs beino,- also provided Avith nieans for edgewise clan-ipiiig eiigagement toivarcl each other; 5 and corner posts for uiii'Lting tivo wall sections disposed at ,ighl@- aiigles to each oth-'r,, the corner posts havino; secui-ip-g meaiis sin-iilap to the securiiig meaiis for the sftbz-zl Aihereby to draav each slab acljacent the coriier post toiv,,Lxd tl-ie post inclai-ilping en- 10 gagement thereivitli. l.ii testiii:iony -",Iiereof I afiix iiay signatlir e. JAMES F. ADAMS.

Pa;e.-ellted July 13, 1926. 1 5919943 UN@I'TED STATES PATEN'T OFFICE. JADIES F. ADAMS, OF WASI-IINGTON, DISTRICT OF COLU19BIA. DONCRETE-BUILDTNG SYSTEYJ FOR DWELLINGS. Ap@lic,,tti6n filed January 26, 1925. Serial No. 1,92-5. My iiii,,entioii relates to ,I systelil for formin_g concrete follii:datiOP-s and "Talls for buildings. Tlle object of tl-ie inventioii is to provide r) I system of this IKilid iii ivl-iieh t@lie -kvall inay be foriifed of ltrge slabs provicled with i-,@ieans@ for firi-iil-v liolding the saii-ie iii operqt-Lve relation to each otlier and i-nounted on a foiii@dafioii adapt6d to drain P.Avay aiii, 10 Nva@ter that iiii@@lit pe'@colate tlirotigh the slab q,nd inaIK:e its w-,iy into the cellar of th-e bti'ilding. other object is to provide for a constriietloft which, wbile being th6rougl-ily go6d. 15 Nv'll @',be ooiiiparativ'ely el-iea 1 yet p, -,tnd Nvill e,rmit @of the very rapid erection of the btiilding witl-i wliieh it is emplo@ed. .,'JiAor objects -vvill appe,.tr in the stibjoined description. 20 The ii@veiition 6oi-isi'sts in the ilovel constitictioii of the 1)aTts, and tl-ieir arraiigemeiit re@lativel)T to elch other wl-ten they are ,,isseiiiibled as i@7ill be hereiii:after clescribed er iiid cloiiiied, ref elice beiiig had to the ae25 0011-1pl@nyiiio- drawino-s, in -@vl-iieh:- Fi-a. I is ,L lioi@izolital section o-f a portioii of ,t 'wall forined in accorclance -witli iny iiiveiitio I n. . Fl-@c,. 9- is a persl)ective view of oiie forin 30 f tj@'e btiildid& sl@bs used. 0 @n Flo,@. 3 is a plan vie-v@, of the iiiiier side of o-ne- of these @4labs, with its i-eiiiforcements sh6ii,n in dotted lines. Fig. 4 is ,t p,-'rsp-ective i,ieiv, oii an ei-i35 IE,,rgod se@Lle, of the angle-clan-ip whiel-i foi,ms an important part of my iiiventioii; and, Fig@ 5 is a sp-etioiial view slionving the liletl-iod of iiiounting the slabs oii the found'a'tion in the formation of a w,tll. 40 @ T , ho ni-imeral I ii-idicates a slab used in tlio -f ,,t'on of the walls of the biii.lding@ orna iThis sl@ib is prefer-,Lbly recessed or chan-lioled longitticlinally @on its iiiiier side, tlierebi, -or6vidiiig it at opposite sides 'witli the 45 ff,,tnge 2, 'in which are formed t.1-ie sen-iieirelflar ' recesses 3, -kvl-lich latter opeii at their outer eiids into're'cesses 4 on th6 outer f (@e of tho slabs, aiid th6se r6c@sses are a a r-raiiged to r(@gister -@@ith the recesses;in other 50 slabs wliep- ilie slabs @are@ placed in position iD the wall, so thq@t the sc-,Mi-cireiilar recesses 3 when tliov reo-ister Nvith eael-i otl-ier in @a(ljgceiit slabs l@rm' c@li-lidrical openings b:ef@v,oen the slabs. T-1-ie r@gisterihg faceli r bot55 rece$$i@$ @4 on ad,] a,@ent blo@Rs hov@ t @i tona portions forn-ied in pl@ines incliiied at, rio- t a (y WR h n,les to each otl-ier as cleai-ly sh(,, iii Fig' 1. The slabs 1 are ,ilso pr6vided on their inner chaiiiieled sides ivith studs or proje6tions 5 ivhich terialin,,tte in the same 6o plaiie iiitli the inner edges of the sido flanges 2, ai-id are provided -with central openings 5'@' -Nvliieh extend out-wardly throligli tlie slab and opei@ at their outer ends into the face recesses 6 (see Fig. 1) ivhich are the saiiie 65 si7,6d recesses as tl-io-le formed -L't the meet- ing sides of adjaceiit blocks by the registerinorecesses-4. Sp ecial attentioli is call6cl to tlie, aiigle laiiip 7, coiis.ist;ng of tli6 iiiiddle p6rtion @ia 70 ai-id the end I)ortioiis 7b: disposed at right angles to etcl@ bther,, or 45 @ degrees to the iiaiddl e sectioii. Each claiiip is provided -Niith it epntral, bore 8. for thle reception of a stii'L-able bolt 9, as slio-",n ifl Fio,. 1. 75 . The foi-indation of the biiilding is providod oi-i its top, side -witli a longittidinpl recess 10 of a ividth to rec'(@ive the,slabs I on edge therein, ,iiad iii the bottom of this re cess exteiid iito, doll7nll, ardl)T ftiad oiitii7ardly frolii 50 the inner-si-do thereof ,ire a series of i-ecesses 11 opening at the outer side of the -t'ouiidation into t ditel-i 1.1),, ivl-iiel-i surrounds the fotiiida ti6ii, and is -fillect, with graltel. In dperltioi-i, the slabs aro sot up opposit-I lo 5 each other, one,,91,@Lb to forfn @l-io iiiner wall, aiid the 6ther the o-Liter -kvall; or the outer e -i, slab oiily iiiay I)e tised, in wliieh cas it ii Ly be attiched to any supporting frame or structu re, for the ptirpose of foiming a go buildiiig will. It is Nvben tised is ,t, basement @vall or as a ivall for the first floor abo-ve the fo-Liiidatioii,fo r a d-welliiig or siiiall st,.ruettire, th,@tt thegroov e or rece@-s 10 is eiiiployed. 95 In erectin @g a buildifi-,- it is best to begiii at oiie corner, setting iip the special corlier post 14 (-,ihicli is ,tlso provided in its edge and faces '%Yitl-i the recesses 3 and 4 respecti vely just as are the SlAbs 1), and at- 100 t,@ichi iig th@eret6 a regular slab I., (also indicated b F iii the dr@t-wincs to distingtlish y it fron-i ot'iier similar slabs iii the wall shonyn iii @Fig. 1) , ,ind @,t h,,llf-secti6i-i slab E, ,11.1 ivi-th the bolts 9 E@nci tl-ie cla'mps T. It -will 105 be seeii t-l-iat the inclined eilds 7b of tl-ie clanaps -fit the inclined bottoms o'L the recesges 4, in ,@tich a way,as to siinultaneously biiid :the slabs -E aiid F to.. the 6orlier-post 07 t' a--n o ea,@ii @t.1i'er. n tlio @labs E a@ d 110