Letters Patent is: 1. In; a coml:)ensating spriiio--hinger and shock-absorber for ieliieles, the coinblila- 85 tioii Nvith @ eh'cle frame, n-iain spring tnd I V I a-xle. Of a flolitinc, flexible lever - pivotally mouti-ited in ,tl rocli:ino, 1-itnger bet-,ween said fi-,ime and. main s:prrng, a,iicl means for se-; tl-ie in-.ner encl of stid lever to the 90 mai.ii sprjrig aforesaid. Iii a compeniating spring-han(-er and sliockabsorber for veliieles, the coinbination ii,,"tli @t vehicle frame main spring and -axle, of tn aiixiliary flotiting spring - pivotally 95 motintc@d iii a ro-,kii-ig hinger betiveen said fi@ame -nd maiii spring, and means for piir-I otally coiinecting one end of saicl auxiliai-y sprin- to the main spring aforesaid at a poiiit iiitermediate one ei-id of tl-ie mtin@ loo sprin@,)- and the vehicle Ixle. In a@ compensating spring-hanger and shoelK@-,,Lbsorber for vehicles, the - combiinatioii ivith ti @eliiele frime main sprin<y and ixle of an ,Luxiliary flo,,tting spriiig pivot- 105 alli, iiiouiited bet",een said frtme .ind main ,,,,)i-ing by t i-o,-king hanger, and means for pivotally coniiect;iig the inner end of said atlxiliary spriiag to the approximp@te centei- of stiid iiiain spring. 110 4. In ,,. compensatino- sprino,-htinger ,tnd sliock-a,b-,orber for veh-icles, the combination witli a vehicle frame. main spring and axle, of an @iLixiliLry flo,,iting spring pivotaify motiilted betweeii said frame a-nd 11.6 m,,,iii spi-iiig- bl, a, rocli:ino- lianoer, and t link for pii-ottlly connectil, the iiiner end of said auxili,,ti-y spring to the approximate center of said main spring. Iii a compensating spring-hanger qnd 120 shock-absorber for iteliicles, the combination witli a vehicle frame main sprino- and aile tl -111-@ of an auxili,,try floatino- leaf spring normaln Iy Linder tens'lon supported in a rocking hinger interposed between'said frame and 125 main spring, and ,t link for pivotally connectin(r inner end of said auxiliary sprino, to the main spring at its approximate center. 6. li-i a compensating spring-hanger and 130

1,441,766 shoek absorber for vehicles, the combination 8. In a compensatin(, sprino,- hanoer and witli a vehicle frame main spring and axle, sliock absorber for vehicles the COMEination 20 of an auxiliary floating spring lever nor- with a vehicle frame, ma-in sjl@ring and axle, mally under tension mounted at one end in of an auxiliary 'Iting cantilever spring flo' 5 t r.ocking lianger, between said frame and mounted at its b,.ise end in all adjustable niain spi-ing, ajid at its opposite end pivottio@Lting lianger intei-posed betweeii the inain ,illy ecured by a link to the main sprina at spi-ijl(, aiid frame of the vehicle, and a link 2 5 s a point ,tdjacent the vehicle axle. corin@cting the opposite end of said aux7. In a compe,nsating sprin hanger and iliai-y spri.ng to the main sprin of the ve9- 9 lo shockabsorber for vehicles, the combinatio'n hicle. witli a vehicle fr@Lme main spring and axle, , In testimony whereof I affix my signaof an auxiliary @leaf sprin(y mounted in it l@ngitudinally adjustable @ectional hantrer pivotally connected to said frame and maiii i 5 sprinc,, means for retaining said hanger in adj,usted positions, and means for securing tile opposite end of said auxiliary spring to the main spring. tiire, in presence of tA,@o stibscribiiiy wit- 30 riesses. WADE M. WIIL@CES. Witnesses: C. G. P.ICKAIID, C. L. Smi.TH.

Patented Jan. 9, 1923. 1 4419766 UNITED @S:TATES@ PATENT OFFIC@E. WADE X. WILKES, OF CHARLOTTE, NORTH CAROLINACOXFENSATING SPRING HANGER AND SHOCK ABSOP.BER. Application filed September 16, 1921. Serial No. 501,024. To allwho cogicem., ,Be,.it known I, IVADE M. IVILHXS, a citizen of the United States, i.-esidilig at Charlotte, in the couiit.y of Mecklenburg and State of North Carolii-ta, have invented certain new and useful Iinproveii:ients @ill Compp-nsati@ing Spriiig Haiigers ind Shock ikbsior@ers;; aild I do hereby ,declare the fololv 11@ de, to be a fiill, clear, ,t,nd:exact lo scription of@the invention, stieli,las will eiiable others skilled in the art to which: it appei-tains to inake aiid use t.he same. )4y invention, broadl @ y @st tited. relates to automobiles carriages wagoiis aiid spring, i5 vehicles geiierally, but n-ioreparticularly. to spring equi.pment of novel construction for use in connection with such vehicles. It ha,s for an object pi-imarily the production of practical, iiovel and.lefficient 20 meaiis for Ilessenino, or abso-,,b the shocks. t@ i'lg to which Nehicles are eqnstantly subjected by reason of roa-d obstructions and inequallties. It has for a further object the pi-oduction 25 of novel shock absorbing or compe:nsatin,,- leaf- suspension me anism, capabl[e spr"Ig of functioiiinl, moi-e flexibl),, than heretofore, without in the least detracting from, or roducinly that degree of rigidity so esp -i 30 sential in tfie resent day rapid transit n 0tor vehicles. 'For a further object my preseiit: system and arrangement of cotnpensating auxiliar3, springs are designed, arraiiged aiid adapted 35 to materiary reduce I the severe strains ancl stresses to which the rtinniiig gear of vehicles, particularly the ebassis of rnotor -vehicles including relativeIN, fixed parts aii@d wheels are colistantl),- subjected while ii-i 40 service more especialfy wh en heavily 1,,tdeii. With these and othei- objects and resulting advantages in view, the present invention will be hereiiiafter particul@rly described and then pointed out in the appelid45 ed claims. In the accoinpanyiiig draA-,,in(,Ys Avhich form part, of this application for Ietters Patent,,and whereon@corresporidin(y numei-als indicate,like parts in the several views: 50 Figure 1 is a side elevation shoi-,,i.iig on6 rear spring, and a fiagi-nent of a vehicle frame or chtissis, together with an auxiliat@ireciprocating or floating aiid sliock absor@ing@ spring element interposed betweeii@ said 55 main sprin and frame by agency of a ro6k9 ing hanger; ll'igure 2 is also a side elevation similar to Figtire 1, aiid includilig a modified form: of auxiliai-y sliock absoi-bing spriiig Avith its i-ocking hanger in an idj-Listed relatioii; and 60 rligui,e 3. is a etail detached and relad tivel,)- elil,,tro-ed N,iew sho-wii-ic, 'ii side elevaL., tioii pai-tly I)roikeii tiia)r, thzne Isplit aiid adjustable hting@,er for said auxiliary spring -s. meinbei 65 . Pefereiiee beilig had to the drawincrs and chtractei,s tliereon, I iiiclicates t he r6ar end of a stipportiiig fraiiie or chassis of an auton-iobile, the 9 saine, beiii of any a,pproved form of coiistructioii aiid material, to %ihich, 70 is sliackled at 2 in the usilal maiiner, an ordiiiai-y leaf spring 3, in the I)resent illus-, ti-atioiis being of semi-elliptical shape, and iii aiiy ei,ent secui-ely aild suitably bolted to the axle 4 as iiidieated at 5. 75 The nlimera,l 6 indicates an atixiliary, reciprocating, specially ai-r,,tnged and coiistructed, sliocli:-absoi-bing or r ebound-sprina introduced into the rear end suspeiision suitstantially as shoivii@ by agency of a novel 80 forn-i of split, adjtistable and rocking lian-er, piiotaII3, shackled:at 7 oii one side to tte 'extreli'lity of frame 1, and at 8@ upoii the opposite side to the, rear end of @ the ina ii hsprisii_ocl 3 as showii by. Figtires I and 85 ')@ c es - T _ a hanger compris upper: and lower members 9 aiid 10 tespectively, the forraer having surface serrations or notches 11, the latter having laterilly extending oppositely disposed perforated lugs 12- 12.an@d 90 13-13, and these m@mbers 9 and 10 being adjustably secured together b)Tmeans of Ubolts 14 @assing tl@rough saia perforttioils and OATer the ap ropriate notches 11 as p clearly showii. 95 The inneriii6st end of the auxiliai-v sprin(- @') is fii@st forcibl@, flexed dow-nwardly aiid is tlieii pi@,otally coiinec@ted under proper teii-,ion I)v a2@eiicy of a link 15, to L plate or sin-illar fasteniii- 16 rigidlv bolted in posi- 100 tioii 't)eiieath xle 4,,while, 'ii one @modified foi-ii:i ol' the present iiive.Titioii tis illiistrated I)A- T@'lgitre 2, the atixili,@ii@y spi-inelemedt is etirled upon itself aboi-e @ its i@ocl@:er liaiigoi! an(i is@ pi-%-ot@lly seciii@ed bi, 105 of @Ln iil)standing linl@-I 17 to tlie i-ip'ip(,r surface of frame or eh,,tssis 1 for ptirposes Aihicli )Aill later appear. The, fcrm of inveiitioji last set forth ttild il.lustrated by F, iytire 2 may be reg,,trded as a, modification iio of that showii by Figure,l of the@ drawin-s, in an(I it sliould be further Uflderstooc.1 that

1,441,766 iny iliveiition is not restricted to the forms of constriietion lierein shoiiii, but ma be y variotisly ii-iodified and rearran.ged Niithout departiiig froni the scope of tlie.,ippended claims, or iiiaterially affectil.19 the restilts ;iccoinl)lislie(,[ tliroii,-I-i a@),,enev of the or. (r,,Illize(,t ajid svstemati.ze(I ai-i-,in(,eiiient of the pai-ts lierein shoivn and (:Iescribed. Iii like iiiaiinei- it is ob,,-iouis th,,tt the I)re,,@- 10 (@iit .1n),eniton is equallit ad.-@ptc-(I, oi- a(l@tl)table to front springs a@ -@vell as rear. aiifl to I)otli front and rear sprin,(,,-s if desired. '1-'Iie coiistruction of my preseiit f@)rm:aiid ari-aii(,-ement of compensating atixiliary lei,1.5 ei-,tge leaf-spi-iii(, litn(-ei- aiid sliock absoi-ber being stibstantially as lierein slioin,ji and describecl, the operatioii iaill iio)v be )-)riefly set fortli as folloiis: Ul)on suddenlv enteriin- a (,huck li6le ot20 i-ut in the road bed, or UPOD meetin,), ivitb other roid obstr-uictions the xvheels of -t niov-. ina vehicle ivill be inoiiientarily ai-rested, aii(I in the al)sence of s-Liitable spiin(,, eqiiipii).ent, or o'Lher absorbin.(Y mech,,tnism, the 25 shock oc,@asionecl thet,p-bv is transinitted di.i-ectlv to the vehicle itself and its occtil,),,tnts. O;i the otlier haii(I wit;i-i a sprin- -t-ehicle, stieli foiexaii-iple as a i-fiodei@ii automboile eqtiipped. ii,ith niy improved si,,sten-i of ttix30 iliary shocl;c-absorl)ing ,ind rel;ound sprin(rs, the shoeli@s occasioiied by sucli stiddeii and ii-ion-ientary stoppin(y of the ii-lieels (iioti shoivn) is in a very lar(ye me,- Lsure absorbed or eliiiiinated i)rima-ril37 bv the automatic 35 functionin(y of the i-Lixiliary spriiig 6 aiid its rockin(Y split shackfe. lian"er 9-10, substanti,,tlly as follo-ws: Wheel sliocks trangmitted to axle 4 lift the latter verticallv ii,@ith relqtion to the 40 heai,ier i,ehicle bod),, thereb37 straigl-itenin(, the spring 3 iiiore oi- less accorclin(- to seAeriti, of the shock. Str,-.i,-I-itenin(y of the iniin spring 3 advances the rear end thereof by rocl@ing the han@-rer 9-10 on its shackle 45 7 as i, pivotal center, at the saiiie tiyne recipi-ocating to a limited degree the auxili-,,ii-@spring 6, mcvably seeiii-e(-,l at its inner eil@l bv pivotal lini.: 15. Upon the restiltinc)- reb@iind of spring il the acti6ii @iforegaitnd is. 50 of coui-se, reversed ,tnd in any e),-ent the lea-era(ye a etion set up in the auxiliary sprin,," C), throu(yh the action of n-iaid s))rin(r 3 and the roc-l@ing action of the special sLippoi'tin@@ haiiger 9-10 reglilate, ,tncl coritrols the re55 boiiiid effect of the mgin spi-ini)@. Moreoi,(-@r, tlie. saicl auxillarv sl)rin@), 6 beiii,u initially iiistalled under livera.(Ye tension has the efZ-- feet of partially loadin the ii@ain sprin" 3, 9 t@ as ivell as co-actin.- thei,envith. I)artictilarly 60 upon the reboun(T, to gr,,tcliialli, absorb shoel@s, reduce wear and telir tipo-n the vehicle, and insure e,,isier, sniootlier riding. It sometimes happens that there is a variance in main spring lengtlis, ivitl-i refer65 ence to that of the vebiele fraiiie, or that atixiiitry spi-ilio-s, 6 of' N,ai-yin slial,)e ai@-e 9 employed in carryino- out iii'y iiiaproved sys@n teiii. Wheii this ocetirs, Is inc[icated for eximple I)y, Fi(,"iii-e 2, stioli variitioii is CORLpensated for b-y th@- adj'usti,@,.@,,iit of hanger 70 sections 9--10, ai).d rea,i-raiigeillent of U-bolts 14 in their j.-espeetti-e I)olt hoies 12--13 aii(I notches 11. Iii the modification of this iiivei-ilton in(licited bv Figui-e of the drtt-Ni,-iiigs, thf,, 75 auxili,,ti-y spriii(y 6 is ciii,led upwti-dl LI y iipon itself and pivotalll, attaclied to the upper sui-face of fraii-ie I b.1, meaiis of tlie end link l@i-. this form of c6nstruction insiii,iii(@, a mor,, rizid tiic-l positive sus 80 perision. I-lai,ing iioii, desci-ibecl iny invention v@-liit I claim ind desire to sectire by