claim: 1. Iii a sertpei-, i fraiiie, 'Urac'c-o,,i wheels joi@,,i-nale,,l tipon ILhe i-ear eiid Of said friiiie, 15 t pair oll! liftin- arli-is pivoluilly iiiotii,4Lecl n upon oppos:te sides of sa-Lcl fr,-,me iiieaiis 'iiI I cli,,(I;n@,y i slidin- draw-b-,tr 'Lor acuiiat-in(y t, S"Zici liftii(y ai-ins, a scrape,.@ bo-kvl rotatabl)'r iiioti@@i'Lecl upon saicl li--Ptiiag ariiis 20 the (,,iids tliereof, stop brackets carr;.ed by s,iicl bo",I, a.@id a movable stol) means oillerativeli, moiinted iipon s,,iid lift4iiio- ,trli-is aii,-l ])OS to enga(,-e the stop bi-acl@e'Ls. 2. 'Lii a scraper, a fraiiie, traction wliec@ls 25 joi-,@rna-',ed -Lipoii the repr ei@d of s@ii@,-! fraiiie, a - lift-'@n- arms pivol@ally iiioti-.iil-ed ul)on paii, o-'L t, opposite sicles of saicl frame. ii-ieiiis inc'ii-iciiiloa sl.id'In,-- draw-bar @'Lor acttiatijis@-,i-d arli-is, a scraper bowl ro'u-at-,tbly 30 ur)on saio, arins ,he c-i(is ,hei'eo,-". sl-op bl@ackets carr;e(i by sa;d ,i moi,,ible sl-op meaiis oper,,itvel-y iipoii sai-d li-Iltiiig arms and posit;.'oii-acl o eiiLhe boivi stop brackets, anci meaTIs 'Lor 35 actuatlii(y the iiiovable stop iiieaiis for remoi,- s,,iicl sl'ops enoa(yeinert ivi'L-,@i sai-,l zn @ ]@owl stop brackets to Tree the bowl fo.rotatioii. 0. in a scral,)er, a frai-iie, traction @vheels 40 ioiiriialed upon the rear end of said fra.,Tle, a i-)@iir of 1:-fil-ing arms I)i%,otally 1-",)o,i. opposi 'te sides of tlic,, frame, meaiis ineliid'ii!2: a slidin(r draiv-b,-,r or actii,,,tin,(),, sa;O arms, a releasable loci@iiome,,Ln-,, I "I 45 ti-ie aforesaid mears 'lor ,,c@uual'@i-.ig said lift,ln(,y armi,,, a s,@raper bowl rotttabl,)7 motip.'@c,cl tii)oii sc-,id 1:'ti,,io, arms 'IiiL-eriiied'!ate '@he ell(Is ttiereof, s4@op bracli:ets carriecl by saicl boiv], aii,,-! q, moval)le stop mears op.-i-ativel.y 50 iioi?-ite(I tipoii said li'ling ti-iiis ind -(,,osi-L t;o cd to eia(,-age t-lie boi-,,l stod brael-,ets. 4. In ,t scral)er, a 'Lr,,ime, traction ",heels joiirn,,i.led upon 'Lhe re,,tr end of said fr,,t3aie, a 1),_, j, I I .7 0 -1 14 ftiii@-Y ai@ms 1, ivotally 55 111)011 opl@,cs-.-te si@1'eq of tle fr,,iiiic,. ineaiis iiia slidin(y clraw-bai, for ic'Luat@p.,(v s,,,.id liT-'(iiiff ,trms, a releas,,tble loc]6ng means foi, tli(, ,i'! I oresaid ii-ieaiis for ac@Luatiig sgi@t ii@-tiri2- ai,iiis, a scraper bowl rc,'L,,tt-al,)Iy mouiit(,,d iii)on spid lif'Ling arms iiiteriiie@.,ipte the eii(Is tli,@i@eof, stop brackets cai,r,;@-,d by sa-l@L bo-wl, a iiiovable stop means oper,@,tl-.,-elv ii-ioiji-ited iil)oii said liftin,!2: Priiis ai-icl i,)osit,loii(,d to engage 'U-he bo-wl st(,p brackell-s, ,,tpO, 65 ineans for actuating the movable stol) means for removing said sto-Ds froin eiigagement -%vith saicl bo",l stop br@ekets to free the bowl f or rotation. 5. Iii a sci-aper, a :franic, traction iilieels 70 @III)porting the ejid of s,,tici i"r"tllle, (t pai@ of lift;iiy @-i-ins rilvo, ally mouiited upoi-i opposite si-Ci.es of the A'rame, means inclild'llg a slidiiif" cirpiv-bdir -for @ctuatin(y saicl liftijig ai-iiis. a si)i-i,.i(,- iiieais for )@ieldip,rly i-o-sist- I'@ -t! . ?@, 75 iiag 'Lhe ,IC-'u-io-I OT, L-1-le aiores,",;(,L inelins, scraper bo,,vi :otatabi-v iiiouiited upon sa'd ti-iiis .3t a point spaced froi-ii the ii-iotintliig of sa;-d arins upoii said fi-ame, stop bracl@ets carried by said boivl, and ,t movable ,@,oi) ii-ieaiis oprativel-y moun'ued upon s-aid - lif'-iiio- iriiis aiici ,)ositioneill to engage the - t @n 1-)oivl stop bi-acl@ets. 6. Iii a scrap,,@r, a -I'rame, tractioii ivlieels siii)port@ii- tile rear eiicl of said a pair o4l ari-ns 1)'vot,-@",'V mouiated iil)on ol)- 85 posite siclqs of the frame, meajis iieitidiiiy a Z, @;li-(Ii.n- clra-,i,-bai@ Tor ae'Luat@ln,(r said lifti-n(,- arpis. L, spi-iiig for yieldingly resisti--@ig the aci@ioii of-- the aforesa,d meins, a ,,c, aper boiv]. i-ot,,itably motinl-ed tipon said go a',,- a 1)oiiit spaced tjif-, n iliotii.,tiii(y of sai(i arms tipoi-i said f",me, stop carried by saict bowl, a movable stop opei-atively iiioiiiitecl ui)on s,,ii(i liftinoa,-ms and 1)ositioiied to eiao-,,,ge the I)oivl sto p 05 brackets. aiid i-ne,@ins for actuating 'Lhe iiioita-nov'ii(, s,'Ld stops fi:om I)le sto,,) n-ieaiis To-., rei Avith sa'd t7:ie boivl ,or s@-@op br,.iclcets to 7. In a scraper, a fr-@me, traction wheels 100 stipporting the rear eiid of said frime, a pair of liftinu arms pivotally moiinted upon opposite sides of the frame, means including a slidindra-",-bir for actuatiil,(,,- said liftilig Itriiis a spring i,-ieaiis for yeldiiigly resistin(y 105 the actioii of the atoresqi@ iiieans, a releas'- able lock-n(y means for the aforesaid lyieans for ,icttiatinsaicl lifting ai,ms a scraper bowl rotatably ino,,iiited upon stid liftina arms at a poin,@- spqced f ronl the mouiitilig o'f 110 said arms iil)oii s,,)id stop 'k)racl@cts carrif@d by s-,iid bowl alicl ,t movablie stop meaiis opera'Llively illoul@ted upon said liftin(-, arn-is in and pos'lt-ioiied to en-age the bowl s',op brickets. Z, 115 -F,-me, tr. 8. In a scraper. a fi qction wheels supportin(Y the rear end of said frame, a pair of liftiiig arill@- pivot',Llly inounted upon opposite sides of the frame, means incllicliii,,r -,), slidid.g dra-", bar for actuatliig -;ai,-,l lifting 100 arms, a spriilg iTleLi-is for yieldill-lv resistin(r the action of 'Lhe aforesaid meii-is, a rele.-,,sftble lockin- iiieaiis for the iiieans for ictuatip.(r s,).id liftin(, ai-mg, a se-2a@,)er bonvl rotat'ablv moLin'Led ii.T)on svid lif'U-il,,- ai,ins 125 at a point spteecl from th-e molintin- of arms -Lii)oii said frame, stop bracl@ets carr-@ei by sai(f bowl, a inovable stop means ol)eratively mounted -Lipon said li@ting ai-i-iis aiid positioned to enua- ge the bowl stop braelcets, 1010

1;8021907 and means for actuating the movable stop means for remov,.ng said stops from engagement witla said bowl s4uop bracliets to free the bowl for rotation@ 5 9. A scraper including a, frame, traction wheels supporting the rear end of said frame, a draw-bar slidably mounted iii tl-ie f6rward end of the frai)ae, a spriiig for yieldiiigly resisting outnvard movement of the dravv10 bar, a releasable locking means operable for locking said slidino- dra-vv-bar in eitlier its extended or retracted positions, a pair of lifting arms pivotally mounted at the;.r rear ends upon the frame, n-ieans for operatively 15 connectinu the forward eiads of said lifting arms with said draw-b,ar, a scraper bowl rotatably mounted upol'i saicl lifting arms, stop brackets carried by said bonvl, and a movable stop mcaiis operatively mou-nted upon said 20 lifting ariiis aiid posi.ti.oned to eno@age the ,@n bowl stop bracl@:ets. 10. A scraper includino, a frame, traction -wheels supporting the rear eiid of said frame, a dra@v-b,,,r slidably mounted iii tlie forward 25 end of the frame a spring for yieldin ly .9 resistin(r outward movement of the draw-bar, a releasable locking means operable for locking said sliding draw-bar in eitiler its extended or retracted positions, t pair of lift30 iiig Lrms pivottlly molinted at their rear encls upon the franie, meajis for -operatively cor@necting '.-Ile fornvard ends of said lifting arms ivith said draw-bar, a scraper boivl rot,,ttably inounted upon said lift@l-iig arms, stop 35 brackets carried by said bowl, a iiiovable stop means operatively mounted Lipoia said liftiiig arms and positioned to engage the bowl stop bracli@ets, aiad means for act-Liatin,g saici movable sto-I)s out of enzazement with said bowl 40 stops to-free the bo",l for rotation. 11. A scraper including a fr,,ime, tractioii wheels supporting the rear end of said frame, a, par of lifting arms pivotally mounted to said frame, means including a sliding draw45 bar for actuating said liftiiig arms, a scraper bowl rotatably niounted upon said lifu-ing arms at a point spaced from the pivotal mounting of said arms to said frime, stops carried by said bowl, ,t stop nieaits opera50 tively mounted u on said lifting arm and P positioned to en,o-,ace the bowl stop brackets, means includino, a tooole loel,: for retaininzn zn zn n said stop iiaeans in locking position, a-,id n,ieans for disrupting sai-d toao-le and for 55 t@ zn act-Liating said stop iueans out of engagement with saicl bowl stop brackets to free said scraper bowl for rotat ion. 12. A scraper including a frame, traction wheels sLipportin,g the rear end of said f rame, 60 a pa-,r of lifting arms pivotally mounted to said frame means iiicluding a, sliding draivbar f or actuating said lifting arms, a releasable locl@ing means f or the aforesaid means, a scraper bowl rotatably mounted 65 upon said lifting arms stops carried by said bowl, a stop means operatively mounted upon said, lifting arms and positioned to engaze the bowl stop brackets, and means includi@,ff a toggle lock for retaining said stop means in locking position, and means for disrul)tilily @70 said toggle and for actuating said stop i@leai@-s otit of eiigacremelit with said bowl stop brackets to free Cl-ie bowl for rotation. . 13. A scraper including a f ran-ie, traction wl-ioels suppottilig the rear end of said frame, @15 a pair of lif4Ling ariiis PIN70tally mounted to said frame, means includiiig a, sliding drawbar for actuating said lifting arnis, a scraper bowl rotatably niounted upon said lifting ariiis at a p,oint spaced flolll said pivotal moiiiitin,-, stops carried by said bo-wl, a s@vinging latch meins mounted upoil said 'i-iftiiig ai-ms and positioned to be engaged and rotated by said boivl sto means including ps@ a toc@ e lock for retpinll'l(,y said latch n-ieans 191 ag-ainst rotation and means for disi@uptin 9 said too,-gle to release said latel-i means - whereb,,, sai(.1 bo-wl stops wi@ll rotate said lateli meaiis out o'L lockinoengageiiient therewith. 14. iV scraper includinu ,t frame, tractio n -,v'reels sitpporting the rear end of said fraille, a I)air of liftii-ioariiis piirotall)Tmounted to j'i-aiiie ineans includilig t slidi -no, draivbar 'Lor actuatino- said lifting arms, P., releasable 1 ockino@ me,.tns for the draw-bar, a scrapzn er lo-vi rotatably m,ounted upon said lifting arms at a. point spaced from said Pivol.-al mounting, stops carried by said bo-wl, a, swingi-,ig latch means operatively motinted upon 100 I ; sa'(1 @-ftinc, arris, -,-,id positioned to be en(a.(,eO, and n swuiig i-Tito disengaging positioii by said bowl stops, iiieans includino- a toglylI-Oe'i.- for retaining said.s-wT-n,,ing lat-ch mea-iis i,.i lockiiig position, and n-ieans for disruptiilg said toggle to rel I ease said siiiiaging l@itei, @165 m-,a-ns so that s,,tid.la@'ucl-i ineaiis ma3, be swuiig into the disengagin(r position by said boivl zn stops. 15. A scraper in-luding a f raiue, traction whee.1s supporting tb e rear end of said f r,,Ime, '110 a pair of liftiilg arms pivot,,Ily mouiited to said 'irame, means @including a slidiiig di-awbar for actuatin(y said lifting arms, ,t rcleisab'.e locl@in(y means for the draw-bar, a scra er b p- 115 o-wl rot,,Ltably mounted Lipon said ariiis at a point spaced froin sa;@d pivotal mount'Ino, Stops carried by said bowl,,,i sw 1-@ I 9- ing lateli means opera'uively mounted upon said lifting ariiis and positioned to be en120 gaged ancl swuncr into disengaging position n by said bowl stops, meins includin- a togule lock for retaining said sivinoi g la@ch mea-ns , n P i in locking OS-tion, aiid means for disrupt, ing said toggle to release sa.id swinging latch means so that said,latch meairis may be s-,viing into the disengaging poslibioii by said bowl stops, a-nd meai-is @or returnin- s@id swinginotn latch meaiis into engaging position and for reestab, lishing said toggle lock. 16. A serltper ine',.uding a frame traction 130

6 1,892,907 wheels supporting the rear end of said frame, ft pair of lifting arms, pivotally mounted upon opposite sicles of said frame, a scraper bowl rotatably iuounted upon said liftina arms at .t point spaced from said pivotal mounting, stop bracl@ets carried by said bowl, a, movable stop iiieans operatively mo-Linted upon said li-'L't'lii(y .tri,.is and positioiled to e.-igage said bo-vjl stop brackets, means iiicludino@ ,t slid'10 i-ng draiv-bar for actuating said lifti@g arms, and ineaiis for releasably lockilig the stidindraw-bar to retain the scraper boivl in either a scrapincr, dragging or carryino- position. 17. A scraper including a frame, traction @is iiheels supportiiig the i-ear end of said frame, a pair of liftino@ arms 13ivotally mounted upon oppos;lte sides of s,,,,i(f frame, ,t scraper bo-wl rotatably mouiited upoii saicl liftii,(y arms at ,t ])oint spaced froiii said 1)ivotal mountiii(y tni '20 stop bracl@:eu-s carried by s,,iid boivl, a movable stop ineaiis operativel.y iii-ou@.ited upon said liftiii(y arms and i)ositioi-ied to enuage said boivl stop bracl@ets, a dr,,tft means operatii,ely mouiited iii sa;-d frame for actti,,ttinu 25 said liftin(y arms, ancl ,t co-,itrol. means opern able for loelii-ii- said draft means fo,. retaintn ing said sci,aper bonil in either t sci,,ipiiig or a dri (r(-in- position ancl also operable for rezn leasinff said draft iiieaiis for elevat'.n,(,r and 30 floatiii(yly retaiiiing saicl scraper bowl in a carl-Yill(r position. zn 118. A scraper includi.n(r i frame, wheels Z-1 suppoi,tii-ic;- the re,,tr eiad of said frame, a pai-, of liftiiig ariiis pivotally mouiited Lipon oppo35 ste sides of saicl frame. a scraper boivl rotata@ly mounted upon sa'id lifting grms at a p-oiiit spaced f-@@om said pivotal mounting, stop I)racl@@ets carried by said bowl, a movab'@e $4op meaiis opera'ivelv inounted upoji said 40 liftiii!-@ arms ancl positioned to en(rage said boi-vl stop braci@@ets, -, draft means operatively iriotinted iii sai(I frame for actuating said liftin@y arms, a sprin- means for resistliig the Z= tn action of siid draft ineans, and ,t controll 45 iiicaiis ol)erable for locl@in s I aid dr,,tft mcai-is 9 f or retainiii- said scraper bowl in either a n scrapiii(, or a d.-.i(r ing position and also opertn @,g able for releas;ng said draft means for -,-,'Iei,atin- and floatiiioly retaii-iii-i(y said scral)er 50 boii,l in a carryijig position. Sigiie-I at T@os Aii-eles, Ctlif., this 5th da-y of Jtilv, 1932. OSCAR W. SJOGREN. JE4 SSE A. ITAUGHN. 55 00 65

Patented Jan. 3, 1933 118929907 UNITED STATES PATENT OFFICE OSCAR W. STOGRFN, OF HUNTINGTON PARK, AND JESSE A. VAUGHN, OF LOS ANGELES, CALIFORNIA, ASSIGNOITS TO KILLEFER MANUFACTURTNG CORPORATION, LTD,., OF LOS ANGELES, CALIFORNIA, A CORPOP.ATION OF CALIFORNIA REVOLVING SCRAPER OF THE WHEEL TYPE Application filed.Tuly 20,1932. Serial No. 623,516. This invention relates to a revolving scraper of the wheel type, in which the scraper bowl is rotatably mounted upon a, pair of lifting arms, which arms are operatively connectea to i sliding draw bar for elevating and siniultaneously rearwardly tiltina the scraper bowl from the loading to the dragging or carrying positions when the desired load has been accumulated. io An object of this invention is to provide a revolving scraper of the wheel type, -with a pair c)f liftin- arms to which the scraper bowl is journalled at a point spaced froin the point at which the lifting arms are ,o pivotally connected to the frame of the implement, and also to provide a sliding draw bar mechanism operatively connected to the free ends of the lifting arms and operable for lifting and simultaneousl-.y rearwardly 20 tilting the bowl when the desired load has been accumi-ilated. A furt-her object is to provide the lifting ariiis with movable stop means for engag. g suitable stops carried by the scraper bowl In @5. ,tnd also for providin(y actuating means to clisengage the movabl@-stop means from engagemen,t with the bowl stops to free the bo-wl for rotation. A further object is to provide a releasable lockino, meatis for locking the sliding draw-bar to retain the scraper bowl in either a scrapiiig, draggiiig or carrying - Dosition. A further object is to provide @ releasable locking means o]:@erable for locking the slidin- araiv-bar for retaining the scraper bowl in eitber a scraping or a dragging pbsition, and also operable for releasing said sliding draw-bar f or elevatitig and floatingly retaining tl-ic scraper bowl in a carrying position. 4.0 A further object is to provide a scraper -which n-iay be drawn over levees or embankments witholit cutting through or breaking down such levees or embanknients. A further object is to provide a scraper 45@ whiel-i may be tised for the building of levees, breaks or embanki-nents. A further object is to provide a scraper in which the scraper bowl will be simultaneo'Lisly rearwardly rotated during the lifting 50 of the bowl. A futt-her obje,-t is to provide a scraper in which the bo-w! m,,ty be floatingly re@'Lained in a carrying position. A further object is to provide a scraper in which the ctitting blade will @e elevated 5t from a etittino, aT-I,ule to a non-cuttinly an,-le simtiltaneously -with 'Llie -levating of trie bowl. Other objects and advantages of the invention will becoi-ne apparent as the nature of the same is inore fully understood fron@ co the following description and accompanying drawings, Aerein is set f orth -what is now considered to be a, preferred embodiment. It sholild be understood, lio-wever, that this particular embodiment of the invention is 65 chosen principqlly for the purpose of exemplificatfon, ancl that variitions tl-ierefrom in details of construction or arrangement of parts m,.ty accordino-ly be effected and yet remain within the spirlu and scope of the inven- 70 tion as the sam-- is set f orth in the appended clainis. in the drawings: Figure I is a plan view oi' the invention; FigLire 2 is ft side elevation of Figure I and 75 illustrates the iMDleiiient in dragging position; Figure 3 is a view similar to FigLire 25 with the exceptio-,i thit the impleme-,it is ilIListrated in the scraping or loadin(y position; Figure 4 is a view si@-nilp,,@@'to'F'Lgures 2 and 3, excepting that the iinplement has been elevated to its full carrying po,-ition; Figure 5 is ,tn enlaro-ed fragmental view partially i-n sectiot-l of-the removable bowl i'5'@ sto p Figure 6 is ,t s-letional view taken substantially in the plane of lines 6-6 of Figure 5. A preferred construction of the inventio-@, as disclosed in the drawings, includes a main 90' frame 1 supported at the rear by traction wlieels 2 jolirnal@led u-no-.i the tr,,insverse axle shaft 3, w'hich shaft is's@ecured to the frame by bearings 4 and U-bolts 5. Across-member 6 is I)rovided for connectino-, the rear ends of 95 the frame, Lipon which member wl-i,-,el cleaners 7 are mou-nted f or removing mud or other deleterious matter from the tread of the wheels. A sliding dr,,lw 8 , slidably mounted in the front e-pd of the frame and an antiioo

2 1,892,907 friction roller 9 niay be prov;C@,.,d -,'or reclueing the slidiii(-- frlctioii of Lli--- draw-bar. The aiiti-'Lrictioi-i rollei- 9 iiily be ii,,)oii the fr-,i-ne as by the 10. A 5 pai-r of liftinc, ,)rms 1 i. aj:o iiiouiite,,l upo-.i the f-ran-ie, -,s it '-12, ,,jid -,ach ariil i--qav, beprov;- de0tivi',,Iia(lepe,i-iO,'ii-,bu,icl,c'L,13. Aii operat;iimeeliaiiism is -.v;.('Lc(l -floi- tr,-,nsMittiii,- the iiiotioii of the sl@.dtp.,c,, 10 8 to bracliel--s 13 of the mech,.tiiisiii may ]!OC',i: @l" 1 L'@.Paled ui)oii the frame by of beariiigs 15. Ai@ aetti,,tti.iig lev;--r l(i ii-ialt ],)e suitabl,)T sectirecl iipon shpf@Ll 14 by ivelding, ,-@s al@ 17. 15 A coiiiiectili- lir@k 18. wliiel-i lini@ i-s adj-.istal)le a@ to leiigth by 'Lhe ri-,ht arici ttirp@ b-Licl@le 19, operativeli@T'coi@iiects the reir eiici of the slidit-i(v dr,.i-v,,-bar 8 'to the fi-e(, ciid of lever 16, erebv the slidiii- i)iot;lon of the 20 clra-",-b,,.r A is transmil@-tecl '-o lever 16, v-,,b@@ch in ttirn ciiises si-iaft 14 to rock. A cranl@-arm 20 is provicled at each end of rocli-shaft 14, and eoch arm 20 is o-,)eratively coniiected to ihe eild bracket 13 of the adja25 ceiit liftincr ariii 11, -s by means of a pair oflinks 21. By me,,,.iis of 'Llie mc,,chanism jtist describe(l, it ivill be observed tbit -,is the slicling draw-bar is moi,e(@, iii or oii'u of the frame, the forward en,,Is of the I-'.Ifting ari-ns will be 30 10 ered or aisecl. i W r A scraper bowl 22 -Is rotatably -.q-io Linluecl b--tween the liftill- irms, ,).s bv meins ol' truniiions 23 and bearin-s 24, and the bo,,vl is provided at each end with a loidiiig stop bracl,- e'.- 35 25 and spreadin- stop bracket 26. The bowl t, is also providecl wi'li a cuttiiig blade 2T. In other respects the boivi is of ord-@'itary aesi(yn. A lockii, and releasiji o- meaiis mal, be provided. It is preferable @o arraii@@e ilie lock40 iiig and releasin(y meaiis 'tlo normally retain k-, the scraper boavl against rotation, but which may be actiia'Led to release the bowl i-P. order 'Lhat the bowl m,).y roll to spreacl or dtimp the accumulated load. The lockiiifr means ma), 45 'e, also be arraiiged to loci@ the bowl in t -1 spreadin- posit@on. The locking and releasipu meaiis may iiielude a release lever 28 suitably sectirecl to the control shaft 29, which sli,,,.'Lt may be joiir50 .ialed transversely of tl)-e lif@'uing irms il by iiieans of bracl@ets 30 -.nd jouri-ials 31. Craiik arms 32 may be-Foriiieci inteoral -vvi-h or sliit,lbly secured 'uo each end of s,iaft - 99. A bearing bracke'@ '3 iniy be s,,i;ltab'i,)7 ii-iounteci 55 I dj acent tl-ie f orwar(I Qii cl of each lii'uing arm 11, as by me,@ins of bol'us 34 aiid 35, ai-id iiiay be prov-lded with a b@- .aring 36. A sivinging latch 37 may be jouriialed ;-Ii. the bepring 36 of each, bracli:et 33 bv iiie,,tns of shaft 1918, - %Vhich 60 sha-ft maybe formed;nte-r,,tl -7,Titli or sliitablv sectired to the sivin(yiiig lat-,Ii i-nember 37. Any suitable mear,,s m-,y be provided for rotatably maintaii-i.,-,(y shaft 38 -w,.thin tl-ie bea,- in- 36, such as ivasher 39 apd i-iut 40. 65 -Each bearii)-g bracket 37 m,,Ly be provided with a projectin- stop 41 in order to limit the snvipging 1-noveii-ient of latch 37. Adjacent the lower enci of each swingin- latch 37 zn there is prov;lded ,t latf@rally projectiiig stop 'Ltig 42, adal)tcd v@,hen lateli 37 is snvun- into lockiiig posiL'io@,l to be en(yiged by ,tnd tlius hold the boavi stoj)s 25 or 26 to retain 'Uhe boivl iii either its loadincy or dtimpiii(, positions. It is pre-Lerable to so arraiire the stop li-igs 42 the tl-ii-ust of tli-I bo-NNTI stops 25 thereayains@' iv;11 tend to rot,,tte the s-vvingiii- lateli 9)7 to reiiiove stop lu(ys 42 from locking engagemeiit with the sai-d bo-wl stops 25 ivlierebv wheil the iiie,',Is for retainid- the' swin-- 8c ii (T latch in lock;-ijg positioll are released the @n locl@ iiill be self -releasing, thiis renderin(, the actio-.i of releasiiig - the locl@in- means easy and positive. The means for reta@ii-iino, t'iie swi-ngin- latch 8 t7l zn in locki-,qg posi'Lion niay prefei-abll, include a to-gle loelc 'Lormecl by p@votally connecting the tipper end o-l' each swinyiiig lateli 37 to zn the adjacent crank ,trm 32 by means of toggle 1;.iiks i-@- sto-i) bracket 44 may be stiitably 90 motintecl iipoii (,,c,ch bracket 30 and arrai)ged to stop the upward movement of the cranl@ arms 32 wh.@-@n said cronk arms have moved slightll, above the center Iiiie passill,(,T tb.],ougli the center of shaft 29 and the points of piv- 95 otal connection of the to" le linl@s and the t@g s-@viiigiiio.-Igtchm-Imbers37. Bvthisarrangem-2iit the of 'i)o-,vl sto,)s 25 stol) li,,gs 42 will 'uend lu-o ro'Late the sw;.ii(,in(y latch iiiembe,-s in a directio-ii to force, throu('h 100 zn 'u-o,-,gle links 4'0, the crank arms more secureIv 1,,-ainst the stop brackets 44. To releas-, the bowl stops fi-om stop lu(Ys 42 reqtiires only 11-he d;si-u-.,)tin- of +.I-ie tog-le locli@, -wliieh is e-,sily accomplished by snvingin(r forw,)-rd105 el ly the release lever 28 by meails of i-ope 45. As will be observed. as soon as the crank arms 32 are inoi-ecl beiow the center line above re-ferred to, the thriist of the Lolvl stops lipoll '-he stop lucrs -wi.11 ac' to swin(- the latch mem110 @ers 37 until ti-ic' bowl stops will ride clear of ti-io stop Iti-S 42; tliiis, the ilillocl@in- of the bo-wl, once 'Lhe torr(rle lock has been brtol@en, is substantially F,-,If-acting. It is clesi,-,,tble to s%i,-n(y the latcli ii-ieinbers 37 back into locl@- 115 iii- position and re-establish the tog(Tie locl@s @-I 17, ,is soon as the rrelTiOUSIY enu,,ige(I bowl stops hai7e passecl b'T tj .7 -le s'u-op lugs, and for tllis piiri)ose -, spriii(y 46 iiiay be, provided at any -,ppropriate locatio-Li. but preferably as illus- 120 tr,-,teCL as actinbetnveeq the release lever 28 q,iicl 'uhe p;votil moijnting for the liftin" Z-- arms 11. !-,it,ch ii-Leir,,s 47, niay be 1),,ovided to t'l.,@, slidir,@, 8 iii e-Ither i-ts - retract--,J 125 or extei-,I.ed posit@on, or both, A,71iieh iijcins i I-olt 48 sli-in.bltlr iiiounte0@ i-.-l bi,,tcket 49 adapted to e7it-ler e-t.Ller ot@ tli(, iiotelies 50 and V)i f oriiieci iii the upper of the sliding ctraw-bar. A control lever 52 i,@)0

is bifurcated at 53 to straddle bolt 48 and to be pivotally connected thei-eto by means of pivot pin 54, and the control handle is olieratively connected to the bracket 49 by means of a pair of pivoted lin'@,-s 55. A sprin 56 may 9 b@, provided for yieldingly urgijig bolt 48 into either of n6tches 50 and 61, whicli spring 56 may tct between the control lever 52 and a suitable bracliet 57 suitably mounted upon the 10 implement frame. pair of coil sprinos -8 may be provided for yieldingly retaiiiii@-o,, t@e sliding draw-bar in its re-racted position and t@.us the implemeiit in the diaging or loading positiop,. One 15 end of eacli spring iiiay be connected t6 the i-ear end of the sliding draw-bar by means of clevis 59, while the opposite end of each spring may be attached to the frame by means of suitable bracli:ets 60. 20 The operation of the scraper @s substantially as follows: A tractor or other silitable meaiis of draft (not shown) may be connected to the sliding dra-w-bar S. At the time of attachinv the draft means the implement:would 25 normally be ii-i the carrying position, as illustrated in F'g. 2, and is thus i-eacly to be drawn to the localitv at ",hich the loiding is to start. As the ser@per bowl is retaiiied elevated above the si,,rface of the uround and as so the wei(rht of the implement is carriecl by the traction wlieels, the scrat)er malr be rapidl37 trai,sported to the loading locality. Wben the loading locality is reached, the operator actuates the contro'L lever 52 by means Of 36 rope 61, Nvhere-LiT)on diie to t-l-le weio,'ht of bowl 22 and the action of springs 58 the bowl will be lowered into the scrapin(I or loading position,asillustra@'edinFig@3. Dtirinothe lo-wering of the bo-@il due to the mott"tip@g of 40 the movable stops upon the lifting arms, the ciitt,ing blade 27 of the bo-wl will be rotat-ed or tilted dow.,iwai@dJ-v in a, clo,-IKwise direction into Clitting angl@. As the -,craper ;.s drawn aloiig, a load i,s gradually accumulated in the 45 scraper bowl. After the scraper bowl has aectimiilated the desired load, the operator may cause the bowl to be elevated into tl-ie draggilig position, as illustrated in Fig. 2, or to tlie carrying posi50 tion, as illustrated in Fig. 4. To elevate the bowl iiito the dra(y ' zng'P-9 1)0sitio-Ti of Flig. 2, the control lever 52 b,- actiiated to witi-iO,,i-aw bolt 48 froin the sliding drluw-bar notch 51 aii(-l then immedi,,ttel.y 5 r), released in ordei- tbit the bolt may ei-iter not ch 50. The move-nent of the sliding draw-bar represented by the di--tance bcltween notches 50 and .51 will act through lir-lk 18,, leiters 16 and 20, and through link, 60 21 to lift tl-ie forivard end of lifting arms !I. By positioiiit)g the bowl latcliing meai-if, iii)(,ii the forward ends of the liftii-ig arms, the bowl Avill be rotated in a counter-clockwise directio-Ti, as viewed in the drawings, duriiily 65 the '@ifting operation. 0-ne of the principa' 1,892,907 3 adiantages' i@esultilig from elevating the bowl to the drtgging position instead of to the carrying position is that a -reater amou@.it of dii-t may be moved, beeause with the scrapei- in dra(y(yiiio@ positioii the large pile -10 of dirt wl-iiel-i h"-a"s'-'accumul-a-ted in front of the scraper boivl during the loading op6ration, as illustrated at 63 in F, ig. 2, will be retaii-ied aiid dragged glono; to the dumping locality. The scraper bo-@vl may be lifted directly to into cai-rying T)ositioii from the scraping position b3, actuatlng the control lever 52 to release bolt 48 fro@ii rotch 51 and retaining the control lever act-,iated Lintil the notch 50 has iiioved beyoiid bolt 48. Upon the re- 00 lease of the actiiatin- lever, the bolt may ride upon the upper ed-e of the slidino, draw-bar so ,ts to allolvv the"control, iilears to float, or a third notch, as ii-idicated at 62 in Fi(f. 41 may be provicled to positively lock the IY . o-wl 86 iT-i carryii-icr position. '@Vith the bo-wl elevtted to carrvin posi.1 9 tloij, the en'tire weight of the load is divided betvjeen ivheels 9, ancl the draft means and iiiay be more rapidly moved to the dump@ing go locality. AlThen long hatils are to b-- made, it is pre-L'erable to lift the scraper bowl into cirr ing position. As will be noted from rA ir y tD, 4, t'b-e cutting edge 27 of t-he bonvl has ,-Io'L, o.-ily beeii elevated coiisid.-rably above the ground, but has siinultaneously been ro-tlated ip,, a colinter-clock-wise direciion when vip--wed iii tl-iis figlii@e to incliiie tliie cutting edge tooetlier with the bottoi-.i of the bowl above tl-ie hori-zontal for two im")ortaiit reasons; the first being to retain the accuinulated load iv;.thiii the boivl, and the secoiad to enabl.e the scraper to float or ride over an embank meiit or levee ins'Lead of etittino, a path therethr(@tigh, as ivould be the case if 10" t,lie sci@aper were loc'i@ed in dra(,Yging position. Wheth er the scraper bowl is retained in the dragging or the carrying position, the oper@@ tor may cause the load to be spreacl 110 or diiiilped in ,t Pile tipon arrival at the dtimping locality. To spread the load, the operator %cttiates the release lever 29 by iiieans of rolde 45 to disrtipt the toggle I)ck, whereup on the thrust of the, bowl stops' 25 115 upoii the luys 42 of the sw,-In,-iiig I-,tteh 37 zm complet es the rele-,ising operation. As soon as 'Uhe bowl stops have cleared the lugs, the r latches are returned by the action 120 1 46 to their locl@iirig 1)osition, and s -vi" gi'-' of s)ring the to@),, ,,le locking ef-Fect is again set ul). The rot,,ition of the boivl br;lngs the spreading stops 26 into loclcing en(,ageiiiert with the stop lugs to retiin the bo-wl in spreadino- positioia. To d-Lim]) the lo-@id in I pile, tj@e re- 125 1--ase lever 28 is actuated and retained in its actuated position until after the sl)reading stops 26 have cleared the stop lugs 42 thiis permittii g the boivl to mali:e a com lete revop I lution. After the load is disposed Of, the im95 100

4 1,892,907 pleii'lent is returiied to the loadiilg locality ii-h-,re the coiitrol lever 59- is act-Liated @uo rele.,,se the )-vhich is Otraivn i-n "-o the t@)ii)le-o,ieiit diie to the ciTec4u- of si,)i,iii@,rs 58 aild U r tli(,, iveiglit of the eriap-,, bov@,l Pi)d becaiis,,, ii,;-tli ,i-n eii-ipt,T iiiachine i'@ie draf't-I is li@,,ht. Havinl- 'Ltillv (lescribecl the i)re-' (-,rr@,d eiiibodimeiit ol tl,,e inventl'.oii, it is to b-I s'Loo,-'L t'llat it, is jiot to L-c, I'-Iliited to the 10 t,@ils so' for-h, but tlic@ of the fti'll scope of the a,)peii(locl, cl,,iims. We