[1]P-,@te.,c.ited Jari. 1924, 11480@692 UNITED' STATES 'PATENT OFFI,CE 6L,ORGE iOHN-RACKHAYT, OF.CHI(,.8,GO, ILTINOIS, ASSIGNOT-,, TO ROADLE@SS PAT@ENTS 1-16:LT N 6'C'OXP@A Y, OF -V7. LS-,rIINC--TOI@,'' b.E,9@P.RTCT 0 .N F COLU1\IBIA. ENDLESS-TRACK VEI -IICLE. Application filed Taniiary 16,,1923@ S6rial No@ 613@004. thereto ancl,the fixed axle al,v@tys mtiiiitains Be it@ that T,, JOHN li,ACI@l- a fixed relation @-",ith the driiting mechonism. 55 (,t @,,,iil)jeet o-f. ti@i(., Xiyig o'i:' Bri.tain, The iieiglat of the i-eilicle is iraDsi-i-iitted. to ,I@@("Siding iii Cbicagg; coi@Li-Li-,y of- (',ool@, tnd, the lo,",oi-,i,uns of (,lie traetqr belts-throiig@. of liljyioi.s@, certain iieiv, I)ody supportino- cl-,vices of i-iovel coiistrii(.@- el nts@ In Impvovelile, Enclloss-Track, tion,@etrred,by,the@ siib-frai-ties., These d(, V(,,hicles, oi. T,@,hich tbe.follo-winsy@is a speci.-, vices are of such, codstructi.on anci are so 60 coniiected @vith the sub7fi.-ames-and ivitli tlie Tliis- i3i@i,,entioji relates to veliieles. of,tl-io eliss iia -vvbieb @enclles,-, ti.-@icks,or tra@ctor be.Its al@e - OMpIO17ed i@o stis,t,@tiii the -vehicle,@ ti@a,Arerse, th@, -groiii-id and p.,i,r'bictilarly to of'siicli vehicl(@s ii-no-,.vii@,,is."pilot lialf tr,,tck ina(,,Iiiiies" or tliog,@, iii -wli'leb the -front, oi-, wb(,,,-Is o.f tlie. are of tl-ie @()].@(Iiiia.ry kiiict wliile@ the ile,,tr portioti of the vi@liicle@, i@, siipported I)y eiiclless@ tr@ucks or trt--tor belts@,, @ I . : . I ... I @@@ 20 Ftriiet tjie eii(II.ess track iiiav,l)epf(il'i'l -'Irt@s Tlie@'object ii-iveiition is to so, con-. 1 - Tlie@accompaiiying dr,,twings,-,how the prevelii,@le body tl-lat they may iiiove, vertieallv to ,i limited extent relltively to -the chassi @l iiiay have, a, shoi,t fore and aft rocli:ing@moA@emeiit in, -thc@,gtib-frames, in(I-also a, short lat- 65 er,.tl or transverse moveme-ut in said frtlnes. Tn. this @Nvay tl-ie, ine(@baiiism. aiitomatically accomi-iiodates, itsolf tocoiiditions -,tnd- eire-Limstances and assli@es @@the,,great(,st ease,, of oper,,ttion and freedoi-ii @ froiii slio(@k.s 70 9.ncl stra@ins. th,,@t it. ferred way of amboclyiia,- my invention in @@ro,,,ttest, i@i-iaeliines of thp, kind bef--ore mentioned, oase ' i iid - Nvitliotit, undi:i e str al'ii oii tl-ie Fil(-tire I is a, si(le, elevatioii of tlie tractoi, 75 bu abi-i-,@)i.,, iiil si-io(@lKs tb,the i,ehicle., -i@ieeg@iiisrf! at the rear end,of the i7-ehicl(, (v', oiit my,, iiiventiont I provide. cliassis. 25 (,,Iia8sS, o@'@, a,-ly sliitable l@ind ancl @T siipport ,, I ..@t,b.e@ froiit Liid'of the chas,,@@is in "tn):@ suit,,tble wgy,, eithei.,,@,by fr6iit@,@s[6eri@iig Nvheel@ of oi,di-nai-, )7 constr-Lictioii's-Lic@h a s -ite comiiiionly iii', half tra6l@.c iiiachines@ , or I i-nay '30@ ii'c 'ndless tr"k. m6chai-iisin @Lt'botb ends of the cli,,i,ssis, or the entiro chassis iiiay be stipI)ortecl oh the tr,,ictor For con%,onieh(@e of, ilIListrEttion',qnc.1 (les@eripti6n i[ @'n@ay be a@sstimecl, tl-iat the f tont' end of - tl-ie cli,,tssis @is sLippoi'@i-ecl@ in aiiyl suit,,tl)le way, the reir porl-tioii@ howevei-, beiiig - stipported by IUIT iiiiproved tra,etor mochaiiisiii. -@-Fho ebassis has I)Ivotally coniiected to its 're,tr po@rtioi@ at e@ieli side a stib-frai-iie-'wl-iich is m6iinted'to,roclc'ab6Lit 'a horizontal. hxis Figtire'2, is. a I)Ian itiew of this mechanisii,). on botli sicles of tl-ie, chas8is, th(@, top run o'L tbo ttactoi, b6@lt on''on:e @--.ide of the vehicle 80 be,iiig 6mitted in order to @honv cer,tain mech-i' ,tnisn4 ivhich -@A7ould otherwise bo hiclclen. The,.Iremaiiiii-ig fii@tives'a-re on aiii enl,%rged scale. Fi(,Lire, '3 is :i detail view in sectioii on 85 the line'3-3 of Fio@tire 15 @howing IDartiou-@' 1,,irly,l)arts of one 6;.f- the i-)ody supportiiig device,'s, a'hd th@,means employed'for pol@mitti-fig lateral moveiiiehl t.,Iiereof. Fio-tre'4 i8 'a @ d6ta-il -@iew in sectibiri of 90 6ne of the tr@,clc - wl-ieelp, foriniiig p,,trt, of t'hd bo'cly supportiiig de@@Tices and illu@trat6s the, tri,,t'nne@ in -@,7hicli it is mouiit6cl and I)ref6r6bly -,itti@ited - i-ni'dway,' betn@,een its hoiv it elio-a(,e8 tho t:@acl@. fi.@ont,,tnd rear chds' of the sub-f-r'hiiies -. F-igtirb '5 is t side 6levdtion '6f 6ne of 95 slippo@tg at'its front 6ncl@ @@ I)ulley'ov6@ -,vhich aii end.lcss t@a@tor belt 6.r siiitable, COU tTU.@45' tion @ p a,sses and by -,@ihi ch'the froiit - portion o-rtlie@beltissi,ipportecl.. i-\iiothertr,@ictor's-Lipportiiig plille@ oii (,,a6h side of'tl-i& )@ehi6le is fTxedtoarear-sl-iaft,oraxle,'Mountecliiibe,,tri.iigs,c,,trried @by the chissis@ ctiicl,@p6-wer from 60 the hiotor is ,ipplied to,said @eat a:i,,Io. @ ThLis @Nihile'ther T@ront rpoftion of the tr'ack or belt M,g,y i,,ise, tii d f@ll relativel' t,) the el-iassis, the l?oi@tiop th(@keof hq,S, rel9,tiOD the stib-fr,@mes@,v@ith patt of- certaill: bra@ck6ts @a@ridd thereby. Figu-re 6 is ,t view in silde elev,,ttion'sl@iowiiig 1,):Irtictil@rly th6'ebnstrLiction and manner of iiiounting oT I ie o,f tliel body support- 100 ii-i(rclovices. Figtire, @ is t det:iil vie%v iii 's6ctioii on f tli.,6 liii,e i of 'FigL!re 2 and sh6Ws par@ti6@iltrly a'part'of'ihe ,tdjustable flexible @s spensio,.n membars o7-j- -whioh the body I'D,5 u reStS..
[2]1,480,692 r,io,ure 8 is a vie-,v of another part of the @@ispending member shown in Fio-ure 7. FigtLre 9 is a cletail vieii, iii -.ection oi-i the li e 9-9 of Figure I shoivin(, tl-ie ren n of n latio o e of tli@ driving ptill.eys witli the tractor belt.. The ebassis of the vehicle as shown is in the forril of a frame I whiol-i comprises longitudin,,tl side members connectecl by transverse members disposed at stiitabl@ intervals. Bracl@:ets 2 bolted to @ the chissis stipport,,l shaft 3 from which is stispended.on each side of tlie -vehi,,-@l,(, a, slib-frgn@e which is riGo.-Lintecl to sivina or turn abqllt the axis 15 of sqid shaft. E,,t@l-i of 't@es-e siib-frtmes comprises t-,vo side plates 5 cojiiiected to a to @late 7 and spteed by interve@ning plates p 6. Aii,-Ie irons 8 (ire secured to the top plate a4d the side plates tQ stre@igtl-ien the 20 frame ,is shoivn in Fio-ure 3. E,,teli frame is ope,-i at the bottonii aiid the tol) pl,,tte extends 0-ver a I)ortioii oi-ily of the frame, tlius le,.tving opeii spaces at the e-ids of th@e frame to ,tecominoda,fle i),,ti-ts of -Ciie trltetor 25 p-tilleis in th@e niaiai-ier sho-wn. The, oonnect;,on betive(,ii e,,teli stil)-frame and@ the shaft 3 is m-@de by iiie,@iiis of ,t :;O br,qcket 9 bol.teci to the sub-frame ,,i-id pii,otally connected witl-i the txle. The brackets 9 is shown in Fi(ytire @) are (-!- @s),)os 'ii vertlc,,tl p@an6s bevond or on opposite sicles of the@ brack,.,ts tl-ie sb,,tft 3 is proIon-p-cl b@e@,ond the briel@@ets 2 to enga,-e, the br@ickets 9. 35 Tn oper,,ttion the front@ en(] of the tr,,ictor n,iech,-ti-iism tei-icls to rise. and iii orciel., to preserire a i)roi)e,r -ioi-mal positio-n of the siib-frimes @'rel@t'tiveli, to the ch,,tssis I -provi(:Ie oi eael-i sicle of tl-ie vehiclo sprin(y@'12 40 an(-l 1-3 si-irroundiiig ,t ,@od 10 sectired to ti-ie, ,issociated sub-fratne ,tT-id (,x@teiiding tl-ir,oii,gh ,11 bracket It projectin(-, 1-,-),.terallv from the ch,@i,ssis. The sprinf@s 13 are in@@,rposed be,tweep. the subframes and the I)ra@,kets 11 45 ,Lnd ,vhile @,ieldinu to ]i@ , @mit the fronf, ejidg of the tractor belts to ris(,, wbon e-nootintlerin,- ol)structions serve to orclinarill, hold the fr,,tmes in norni,,ll positioti. T,l@e fronf portion of eg,cb tra-tor belt en50 @zl a piillelr 15 Tn,)-Linte(,l i-n be,,irinffs in ,-es br@gel@etq 14 cirriecl bv tll(, front (,P-d' of the c -frame a,sso i,,)te(l siib Tlies(, br,,ickets are slottef-1. ,is i--Q(-I.icited -tt 16 .ind ,tre pro)7id(@,d ith djiizting clevices 17 by mea-.qs w 55 of@which the position of tl-ic I)lflleyqbe ebanqe,cl to v,,try the tep.sioii of the beli,3 in -@,,ell kno"Tn - ways. Tt -",ill be o'@,ser)red t]-i,,it each front I)-LillpIT 15 is moilnted oi i, stib-frame w'hich r(,c'ks 60 itidepeiiclo--ntly of the siib-fram(,, on t.he, opposite Fide of tlie vehicle ,iboiit ,tn ,txis i-,n-e, -icls. ecliqte it,,@ front at)cl i gr el The piillei, 20 on e,,t-li sicle of the vehi(,Ie I'@ qeclirecl t'Oi@,t cl"iving, -,t-.Oe 19 mounted 11"5 ip beAri.-@igs iii. br,,i,eket-@, 18 attn,(@@@,@ t,(@ tbe side members of the cliassis. PoN,,,er is lpplied to the ,txle 19 in aii.), suit-lible ,is iii,,Iicated at P in Figura 2. Eaeb tractor I)elt @)l in,,ii,, I)e of tti@ iisiial f _,I si,,Itible coiistiltictioii _L, I)reS7@) oi In y eit i,,-Liei-it@,oii is conceriiell. I'lle ],*Its sli(@)WIl e,,icli co-D.,@ists of sb@)es '-)2 coiii e(-ted b I @ ), linl@s 2t'@ in stich ni,,.iniier is to permit sii(,Ii free,- doin of ni-oi-(,me,'It that the I)e bent when passincr the l@)tilleys ,Iiid m@)7 I)C 7,-) also bejit l@tt4C@raliv to iceommo(late, (!(,rtaiii conditions. Tlies@ lin],@s -)3 m,,-ty 1-te, tiibill@iias indicated iii Fi(,tii.-,e, 9. @iii4 tl iev ,ire i)refertblv of the (Teijei-,tl 1,7iiid shown in niv P,,itejit No. 1,434.,630 of Noir. 7, 1920- III(-] also iii my Paten.t 1,440,243 of Deceiiil)er 26, 1922. The rear oi@ (iri@,in- 1)1.illey,-, 20 ai-e I)referably sprocket beiilg I)rovided ivitl-i toetl-i -whicli en(r@i-e Iii-,,; 24 oii the shoes 22 ts iiidie,,ited ill Fi(riii,e 9. Ti-,t tilis w,,ty the ),ehicle ;- sill)l)oi-ted oii the loiver riins of tl-ie bells. Pl-(@l,iFion is mll,(le, for a vertic-,il moi,eiiien.t of eacli I)o(li7 siij)pqrting deviee, in tbe siil)-ff,itme. flll(i foi- :1 transi,erse or laterql inoi,eineiit tliei,eiii. Afore specific-,i,lly, ci(-Ii bodn@ stipl)ortiii!@ (lei,ice coinprises i-vheels 49 iiioiini@ed iii tllel inverted U-sh,,tl)e frtme ilicinbers 42 coiinected by cross ),)ars 4,3. TA,',,icll wlieel is mouiitecl iD s,,iitil)le I)e,,ii,in(,,s iii the loivei, 95 ends of tlie irms o? ,i frqm(, i@ slioii7ii iii Fi27iire 1. Tb(, fr,-,mes 42 ire .i-ry-@iiigecl 1,)ct-Niecii tli(@, sicle pl,,ttes 5 of the :i,.i(i the tol) of eieli si-ib-frame is eqilipl)ed I)raclc- 100 ets 25 li,,tN,ing centt,al ol.,)enin!Zs iliroii(rii ivl-ticli exteiid -Iliie sleeves 28 iihicli "ir(l@ fixed to said br,,tel@@ets- ,t,-id exten(I -i consi(lei,able (.Iistaiiee ,iboi,-e tlieni. ancl also extend doivn-Nv,,trdlv into the -frames 42. Tliese, 105 sleei,es sei-ve fis atii(les foi- tlie vertic,@il I)osts 29 @vbi@h mo-%,PTnelit, in the sleel@es@ The, posts 29 ,ii,e 're(-ess(,d on t)-ieii, lowei, elidp, aiid rest o-I tliriift 30 in I)ost ]I( siil:)poi@ts 31. Ti-ie I-)o,,@ts ,ii-c coniiecte(i ivitli. ftio 1)ost-, siil)ports, t)@, I)iiis 12 exteii(Iiiig froni the supj)oi@ts iiito ,iiipillii, ffrool7e- , ill tlle I)OSts. The post, siip!)oi@ts 31 -ti-e stist)eii(i(,,(l fi-oin tile I)i- li@qnffe@i-s r)o lylliell @ll-C I-)il'Otinecte, '.o tli ii-nes 42, I)A@ 1)ins .45 ally co, cl i e, f r, exteii,-Ii-l(,f tlii,oii(rli Iticvs 4,t of ,i,iid tbi-oii(-h tl)e iil)pei- i)oi,ti<)i)s of t@I)e hiin-- ers. The I)eariiiy-, I)c liil)i,ic,,ited in tli(@ ni,,iniiei, ;it t)2 :iiid the 4.5 n,,av bQ, to tl,,e fi-Riii(,@ is pt 46. At tlieii@ loii,ei- the ext(,ii(I ii,)clei- @li,mg of flie iios( 11-5 ti)ei,eto 34@ oii the en(l.,; of pliigs 3@ft fittc(l in the 1, ost siil)l)oi@tq. At i@ s e,,icli I)ost 29 is slotted It 3-P@@ The 28 is sii-.nilarlv sloted at il6 i,nd iii the -,lotted portigp of eafb -pg-t aiid sleene, is 130
