US2304076A - Wheeled scraper - Google Patents

Description

Dec. 8, 1942. Tfo. DAVIDSN ETAL wHEELED scRAPER Filed Nov.A 9, 1940.-

4 Sheets-Sheet 3 ATTORNEYS;

Patented Dec. 8, i942 UNITED STATES l u 2,304,016 a wminLEn semina" s Trevor ofnnvidson, yiwiiwenitee,4 and Boxer Q Sherman Hoax, South Milwaukee, Wis.','assign ors 'to Bucyrus-Erie Company, South .Milwauk kee, Wis., a corporation o! Delaware l 'Annotation Npveniber s,V mitm A364,93 t is chime. .toigjsfjz -izimiy i Our invention relates to new and useful provementsliri wheeledscrapers of the general' posing dumping.. i type shownand described in 'U. S. Patent No.v l 2,152,899,Y granted April 4,A 1939, to Earl. B. Muloon, to which patent referenceis herebyj. made, inasmuch as this present invention represents an improvement;thereon.l

'tated, we have worked out a. number of novel *asftl'ief description progresses. f Y .l Our invention consists in the novel parts and and., i isefu1 details, which will befreadily evident n In Scrapers' of that type, the bowl fills. and in the `combination and' arrangement, thereof..

dumps at its front end. which are defined iiithe yappended claims, and- The main frame of such a scraper is -pivotedlo of Awhich three embodiments arelfexemplifled in' Y atveither its front end or rear end to a wheeled the accompanying drawings, whichare hereintruck and the digging:V and spreading depth after particularly described vfind eXPlaineii-l l determined by raising Vorqlowering the other end Throughout the description, the Ysame, referwith respect te afseeondtruek.. This is theiirstv ence number is applied to the same member or operating function. y l f 15 vtosirnilar members., s.

In Maloon and this present invention,`V Figures '1, 2 and 3 ere Vertical lcngitildinl f l oting is`,at the front end, and the raising` and` '-'S'e'CiQHSO 011e fcrln 0f Our Scraper, 1n digging.`

lowering takes place Yat the rear'end; but thispalthough very advantageous, is not essential.Y f* butY without showing the winch., g The digging binde -is .carriedk rigid with the t0"` Figure 4 1s a' plan View of this variant. takenicarryng, and dumping positions respectively,

main frame, though this is not essential. "aldng the lines 4--4 of Figure 2. and illcllltilllg'y Adjacent the digging blade is .pivoted -a dirtthe winch Awhichcontrols three of thefunctions.'v

extruding curved member, variousiy termed. "Figure isan enlarged plan View of the winch For conformity with the nomenclature of- .the Der Se.1n0re1n detallf. v v, A Maloon patent,'it willv here be called a. fbowl. 25 Figure 6' is a side elevation of this winch.

Swinging this bowl upward to dump is the` Sec'. Figure 7 is a vertical longitudinal section corond function.l Returning it to load-carrying posiresponding to a portion of Figure 2.-but showing tion is the third funetion,4 alternative bowl return means, i and` `showing There is also a front closure, known as thel Y dctied'ihe Semefin afDOSiliOn' cclrespcndingftc apronf Opening this apron (when-diggingfor 30 Fiel-1F61 dumping), and closing it again for carrying, isA `Figures 8. 9 and-10 ere AVertical longitudinal the fourth function.

sections of asecond form of our scraper, in dig-1 Maloon has two controls (ropes), one of which ging Carrying" and dumping positions' `1`o$peo l performs the first function (namely depth-cone liiVeilf- A trol), and the other of which successively per- 35 Figure 11 is a plan View' 0f this Varianti taken* forms the fourth function (apronopening) and along tho lines Il H of Figure 87 the second function (dumping). For the third Referrmg n owto Figures l to 4'.We soo 'that function (bowl return),Maloon depends on grav` the implement to Whloh We have. applledvour ity although in another. patnt. (No. 2,198,916' invention, includes aforward truck 2|,.and a s i0v rear truck '22, supportedrespectively on'two for-y granted April 30, 1940) he performs this funci tion. by a kikmack Cam-actuated by the fau of ward wheels 13, and four rear wheels 24. f The the apron. Y It is'the principal object of our present invention to employ two controls, one of which per- 45 forms the rst function (depth control) ,t and the other of which 'performs the fourth functionl (apron opening). A lag interlock between `apron opening and the second function (dumping) performs this'second function. l 50 A further object is to devise alternative novel means to perform the third Afunction,(lo'owl dre'- such truck, we could support one end of the mentioned in our claims. t

forward -truck- 2l is rigidly secured to twol side plates 25, preferably having substantially "the outline indicatedv in Figure 2. In placeof either scraper onl they propelling vehicle; such suIiDOrtl then constituting one of the'ground.. supports` These parts .constitutel parts ofthey frame of ythe implement, and in accordance with the in- Y Vention they are connected together in sucht a.` Way as to enable the shoe=.26, which is located.

turn) by Seme constant, teIiSiOii means (Such aS forward of Athe bowl 21, torkbe raisedl or lowered, the dead end of the first .listed control, 0r a at will with respectAv to ythe ground level.` In 5Prmg) so 'Comm/ed as to mltate the bowl re' 55 Orderv to accomplish this, `the rear truck -22 is spirit of our invention.

bowl. amiafconuntsfk.ma 'strangergimtisi'mpoint about midway between the two trucks, at which point the arms 28 are connected by pivot bolts or pins 28 to the side'plates.4 Rigidly secured to the side 'plates 25. we pro-- vide a transverselower bea 30,- and. an upper '27 f i a,`so 4,o7e" v preferably provided with rigid forwardly pro- Jocting side arms2l that extend forwardly to av beam-3|.' which latter beam may if 'desired be made of 'lighter' construction than the lower beam. The shoe 26 is preferably rigidly secured at its ends to the side plates 25, and preferably ,includes an inclined blade 32 that cuts intoL the earth when the bowl 21 is being filled. Adjacent the shoe and'preferably at itsrear edge, thev bowl 21 is pivotally mounted on a transverse pivotbar ain'g'bladeis, carried by the main frame, we do not intend to linit this to directfcarriage; The

blade might, for example,l be `carried by thebowl forward of its pivot,jwithout departinglfrom' .the

The rear end ofthe bottom yplate 3l -of lthe vbowl 21 is preferably bent upwardly to'form an intiem] disi'ied rear head 3510! thebovvLl f wnenthe bowl 21 is m the" posmun of restas 'I indicatedrin Figures 1 and 21, the stop bracket together, thus tntmgthebowir j ingposition as shownL in Figures 1 andf2, to its e i n. wnen, in the claims, we state that menig-Q er assists nor resists dumping, "This reach also serves somewhat the purpose ofa 'shock'r-absorber, after sheaves and I5 have been" drawn block toblock.

Rope 41 controls che second usted function', 3

namely dumping. It passes, from the winch, un-

der oneof fairlead sheaves, over one of fairlead sheaves 42, 'over one of sheaves I Laround sheave 48 on; the top of the bowl 21, and back to an anchorage 49 adjacent sh wes 43. Drawingfin on this rope l1 drawssh 'jc-its carrydumping positionas'shown in Figure 3. Y

ARope 50V controls. the fourth listed function, namely apron. opening. It passes, from` the winch, under one of Ythe fairlead sheaves ,over f one of the fairlead'sheaves 42, over one of theA sheavesy 0, and .thence down and aroundthe sheave Il on the apron 3 1, and back to an an-r i chorage adjacentsheaves I 'Drawing-in on )L -carried by the rear 'end of the'gbowl, rests i bOWl.

position so that as theldirt passes up `between the l ioweredgeanof thejapron a1 vand theshoe-zs;

fhedirt pilingup-jin the'bowll. can lravitatev intov the. apron,"after-. whichftheapron.I1 can be movedto a closed positionfsofas to retain the; load. *7 Iheapron is plvotally-supportedon pivot Pins Il. s

A rn. this mamar-variant ofjourinvenuon. we employ three control cables, `the reevina' of which will now be described,still with referencetoFlz-f ureslto4.

. Cabiella controls thefflrst':listedv functiom, .namely depth-c :ntrol. Itfpasses, from thewinch "(later tobe described; not shown in Figui-esl tor I 8). .under one of fairlead sheaves Il, over onefof f fsirlead vtheaves- 42 jover one nflwlves 43; and

- sn'd/orffby locating anch'oragelfilower,V part of the dumpmscycIe-thisreach 'passes-through dead center, andithus: neith-v veratimes around sheaves "M lon'rthe" fr truck 22, and sheaves jon the-i side plates 2l. v 'l'hencefitg.to'ananchoraae onlthefr'ear f Off ChmbQWl; T- DISWiPg-,nlmi 1'.0P

'-.`drawsfslieavesuf.andfli together, asfshown;

rand c thusf-msme theljdlssina majos'l '37oE f #uses desiree-the museos-ofthe nach -bsffincreasedg' locating sheaves* 4,413higherl` tastesbait other 0E ed as shown atf *on the-rear of'theftractor Mifwhich drawsfourfscrapen as 'own inl Figure 4. Ifjso mounted, itma'ybe vactuated by engine of-thejtractor in'gany convenient manner.

(J1-:it may be mounted elsewhere, as forexample is controlled-:byconefclutch58 and band-brake Il, inw'ell-understood manner; Drum Il: oper;

,uente drum-n, that-"stop el on drumu occuclutches ydr'tuxrllfwhich then .starts to r'evolvecloekwise, pullinginc'm rope and Samnaun@ um illlrlnlln its'two yurti-eine positional yIn' place o f f @rope'lllto raise the'digging edge byraislngr rear'en'dofthe main frame, vwe now'have ropel "a, reeved identically as vrope 4I. except thatL se 'gamasimi-'wd this une inzjin =on r9pe'j41, and-thereby. raisins the, bowl rope a is dead-ended at 68', adjacent sheaves that rope: s'.` rope, connectinzthe bowlto the' 4l. main frame, to dump the bowl; lost-motion We now come to the variant of Figures titoA 11. means, actuableby ,the apron opening. means,

- Identical parts bear the same reference-numbers after the apron has openeda predetermined d1s i s as in Figures 1 t0 4, and 7, and will not be lre- 5 tance, to cause delayed actuation of the dumping described hererope; and tension means, tending' toinitiatethe There is no rODe 41 t0 Control the bOWl 2 1. But return of the bowly from dumping to carrying the same lag-actioncontroi is eie'ctdvin another position, 'said tensionmegns being 4 applied to, 111211111811 which Will n QW be descrbed- A yIOP@ the bowl at suchuavpoint yand at such an angle s. extends fr Om a, dead end 10 0n apron. 31 t0 10 as to have atendepcy lwhen 'b hgzbow] 15111 carryl a dead end on oeting. sheave 1|, which slides ing pnsition, to` assist, ratherl than *oppose theinguide-ways 12. Around sheave 1I, there passdumping rope l M l and at 75 0n the top 0f bowl 21 main frame, supportedtherehy; a digging blade, y

` RPES, a and 5 extend t0 an Ordi-n Y-WO- 15" carried bythe main frame; a dumpinganddirtf, drum Wmch 16 preferably on the tracto Rope hoidingbowl, pvoted to the main-*frame adjacent 5159K m lading 905mm (Figure 8)- *eBu' Wh?? v by--the mainframe 'and-adapted,' when lowered,A 1 vthe apron 31 is fully opened-for dumphis (Fleto retaindirt withintherbowlythe*combination dump thelbowi 21.

v spring expedient of Figure 1, or neither;

- holding bowl, pivoted to the main frame di by the main frame, and stdapifreci';,'vvitie'nv ovverf therewith of: a vrope,connecting motion means,actua ure 101,1:1115 `rope `es tauns sumcienuyto pully 'go therewith of, a ropetc-nectmgfmmmm the 0n heavie 7| and hence 0n Tope' n Sumckntlyfw; lmein `frame, to. open the apron; :'aj-drivenfwinch v 4 vdrum toactuatethatrope; a rope,- Yconnecting i To return the bowl -21 fram .dumping 1205112103, the bowl 'to the' 1mmframefwf-uuinpv the bowl; te this variant of our invention can yempioyxeither awinch drumrtcmtetnat opetnd a last` I the deadend expedient o f Figures 1 t0 .4.01` m .25 motionv connection betvveenthesm :two I y l ,wne'reby therstdrum, aitervrotating toapre-f Having: 110W describe@ and illustrated three determined extent, 'fwxu11mpm-deiayedgrotation, L forms of our invention, we vvvish'itto be under-f 'to-thjseond j" stood that our invention is not to1be 1imited jto j 5;' in] a .scapen-h mundds-pborn- 9'. f the specic form or arrangement of parts hereinjmm fr'm Suppoted'tnerebyyagdiggig blade' described and Smmffit HDW-muy @Wi carriedbythe(mamifrieraafdlimpinz;andidnftf' ered bymllclims'- l "holding bow1pivoted'tothe--min-iraxheadiacent Weclaim: 1 m, fv 1.`In a scraper, having: groundsupport; a mainframe, supported thereby afdiggingb ade,

carried by the .main frame; "s vaumpuigfqui rt 1 -the biadei vand. a frontgaprongipvotaliy supported.

the blade; and` a front'aprongpivotallyte retain within thejbowip-th -cmbinatio 'IIS wine mainframe@ @umn by the main' framezand adapted; whnlcweed;

ein; fram i @Miet-fever to retain 'ditlwithinL the 'bowi'; the'combination O l therewith of: a rope, connecting the apron tothe f {elmentpto somek other portion oi the machine main frame, to open the apron; means to actuate v Whih other' portion the dumping the frame and adaptedfwnen lowered: "1'

opeiandthe apron, 'whereby fm1-1 atemeans' forresbeibivel'usins the dum-p'- gearwardiyziromthe' dumping and dirt-holdin: 1 v Y than oppose, the dumping y. l 10. A scraper according to claim 5, characand dirt-holding element is relatively moveable, 5nd tending t0 initllte the return of that element v8. A scraper, according to claim 7, characterized by the tact that said` tensionI means is a `spring'operatively connecting the dumping and dirt-holding element to some other parto! the v from dumping to dirt-holding position. i

scraper, with respectv to which other part said element is relatively movable during dumping., -9. A scraper, according to claim .7, charac terized by the fact that saidtension means isa spring operatively connecting the dumping and 'dirt-holding element to some other part of the scraper, with respect to which other part'said element is relatively movable during dumping;

and by the further Vfact that said spring is applied to said element at such a point and at such an angle as to have a tendency, when said 'element isin dirt-holding position, to assist, rather rope.

terized by the fact: that the lost-motion means,V

-which operatively connects the dumping rope and the apron, comprises the apron around a sheave fixed with respect 'to the main frame to anvactuating connection with a floating sheave, which oatin'g sheave 'engag 'the dumping rope.

11. A scraper accordingrto claim 5, charac" terized by the facts: that the lost-motion means,

- which operatively' connects the dumping rope and the apron, comprises a rope extending from the apron around asheave fixed with respect to the main frame to an actuating connection with a floating sheave, which iioating sheave engages the dumping rope; and that there are guides for theoating sheave.

tuate that rope;

12. In a scraper, having: ground n digging b1ade;'a dirt-extruding rear element, capablo of being shifted to extrude dirt: a dirt-retaining iront apron, capable ot being opened and V a main body capable. in conjunction with'the dirtextruding element-and the apron, ofserving as a dirt-holding container; the cox'nbinationv v therewith or: fa rope 'to open the apron: means I to actuate that rope; a rope. tov shiftjthe extrude dirt; neans to ac? andlost-,motion means, vactuextruding-V element to able by theapron opening means, vafter the apron has opened a predetermined distance,-tocause delayedactuation of the `dirt-extrudingv rope.' `f

13. I n a scraper, having: two ground supprtsi' p pivoted'to one of such supporta,

amain frame, andcapable of being raised' and loweredwith respect -to' the otheroi such blade, carried by the main frame; anda and dirtfholding bowl, pivoted to thetxnainr Yframe',.adjacent blade;v VtheLfcombination therewithof: a rope connecting thefmain frame pto the'second mentioned support to` raise" and a rope extending from lowefrgthedrame; means to actuate thatrope:` a ,y .A n bowl to the main vtrainato dump the bowl; means toactuate thatprope; ,and

anzoperative connectionbetween the frame-raisf' 1 Y bowLQtending to initiate the .refl Y turn of the bowl'froln dumping to carrying posifV tion, said operauve connection being appliedto, point and atsuchlan angle as to have a tendency, when the bowl is 'in carrying* position, to assist, rather than oppose, the

ropetfconnecting the ing| ropeand Vthe the bowl at such-,a

ingrope.y V

"rREvoR o. DAVIDSON.'`-4 Vj ROGER SHERMAN Horus.`

support: a

suppprts; a' digging,v

dump-y y

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