US2481679A - Road building machine - Google Patents

Description

Sept. 13, 1949. A. E. MILLER ET AL ROAD BUILDING MACHINE 4 Sheets-Sheet l Filed June 26, 1945 Sept. 13, 1949. A. E. MILLER ET AL ROAD BUILDING MACHINE Filed Juney 26, 1945 Sept. 13, 1949. A. E. MILLER ET AL ROAD BUILDING MACHINE Filed June 26, 1945 4 Shets-Sheet 1 l. *LII A. E. MILLER ET AL ROAD BUILDING MACHINE sept. 13, 1949.

4 Sheets-Sheet 4 Filed June 26, 1945 da o u Patented sept. 13, 1949 'y l 2 Claims.

,The invention relatesl to road building machines,.'and` h`as 4for vits principal object the iproi have.-.loeen a ..en1 ployed,` in ygervleral the preparation of Vya .stabilizedVL ,soil, r 'oad "basef hasV involved the loosening' flandes'ubst-an'tialf plllverization of the iatlllS/lasolgof ,the ioAlfl'!ed,` the" thorough n-v coi'poration,'tlierewith of'aj' binder such as Portlandy in'nl, .an asphaltieor petroleum oil, etc., and the hsuloseo luet 'cipmpacting Aand '1 smoothing ofthe mixture; the: entireoperation 'being Vcarried out `While ;the.t soil, althoughN loosened, remains theroadbed jSQmey, off the 'soil indicates y itable'fforf thisA type of Work; d'diti'onsin thaforni gfzsandand/ or gravel, etc .ai'enade @tolli 1-1jeviousl :to4 or 'simultaneously with the "introdutiong of jthe hinder. Occasionally` lli the mat'eri'aglsjllisel4I instabilizing--are hauled lx1-and'depostedontheroad lied.r

When. thebinder einployed is' Portland cement, this-,is"usual ly"distributed in itsdry state Vas 'a substantially yuniform layer ,"orblanket on the soil, 'eit'herbeforef or subsequent t'o'its loosening frorn.-,the." roatl fbed,` after which Vas thorougha inixturieaspossibleof the soil', nement, land the Water necessaryfiorfthe hydration of' the latter, issecuredinjvario "inlays, Likewise, where an oil binder us ed;f it.may [be sprayed or otherwise dcpositedgas uniformly Sjpossi-lole j .over vthe surface of jt il',4 aridi thendispersed throughout the letten@ v mechenibalfmixine; or 'the binder may 'loe suppliecltoftheV s oil substantially simultan'eouslyv4 With ,the excavation ofthe latter. fIn this `case;"as'jvvellas` when either-type of'binder isisuppiied to thesoiifprier te) the loosening rtl1`e reof at leas'tjajportion o fvthe mixing of :the ,Soil aiidgbinder is ac complishedlas anincident to the 'exavatiom Anypf the .procedures 'just outlined may also be followedgwhenit is 'considered necessary Vor desirableV to add constituents such as sand, l gravel andthe likelto the natural soil. lnthese cases, the additional rn'atexjials arejusually pla-ced upon the s oi'lls ur faejloef;ore the binder 'is supplied.

vROAD BUILDING M AClI'IN '-ygArthur E. Miller and Edwin A. C. Eicksta n Y' Vy: "7' m"Milwaukee,`Wvis., acorporaton of Wisconsin y1 )Application Jene 2,6,1945,V-seriaiNbgepi,`694f' (ci. :i4-44) as pl-ovvs, narrows dlslg ultivl dded i' 'constituents "Orl lthe' f other; hand, en esfor" r'ryinggi'outfone lia foils-have een l' developed prememsineidntto the insitu silro'ad for? pavement e'shtfrachine -:Ialls in sevralshecialiid in or :both of these with the-parti" """Of tblli The carries @ammi e911. ity of pairs of longit around-the; ril? me@ cagelise stru wie,

each. 9L/which is IDIadeJH.` lheperi as rotors permits ih e; met@ theirinteriorfwheleby:the ars blades v66 may perform a j hyreasonof thsirfanaulari with planeof -rotatiqn,the'b f1a chineiisfreversed so th l materialin oppositezaxialdirection lwardrotor 1.59, l'the bladerangle ar axial componentof mov 'each end r,of `:theroto`r;towau3 1ine,.'aSindlcatedbythezarl.WS

on the reanwardirotor, 6l he b ade. ;s

f .etti such as zto :tend toi/ move @the material, outwardly 6l. 1 nl '.1 al :T Ieends` M ;I'Otcrshas 2 a 'Qlllilalld 11.1 .bearing blocks; ,10W fcarriedllloyfyth side. lwalls or plates 11| oifzanrotorf .boxcrflframe; which l:blocks are slidably mounted ngudes;f'l2f0a1lied'1b3ifthe main frame oretunnelplates 2,0 'The rotor @box plates 'hl are bracedff transverselypby.- cross meme bers :13 and 14,' rand; the ;boxyrandits rotors 6 0 and Stare vertically adjustable in thenguidesaflz by, .means of :.hydrau1ic ,jaoks'il; wherebyfthe positionpffthe rotors relative tozthefcutgrade may be varied. within thenlimits. indicated by ;thedot tedl and broken :linesjmEigA.'fThe shaft Blof the forward? ,rotor.: `lill drven; from 1 theltransverse shafitrlizby achainandesprocket drive 1-6,: while the rear rotomi: driventfromnthe, forward one, preferably at-fa slightly:lfiigheruspeed',` by a chain and sprocket idrlvefil 1 l e'Ih .mixing-,rotors 60 and 4lil, as wellasthe excavatingirotor-AS, all turn' in a clockwise .directionpasv viewedV in Figs.- et` v.and 5. l For, supplying dzheV `dilater rnecessary `for :hydration of the cementvfwhenwthe :latter is.` used as the binden: a centriiugalxpump-c 80 is provided, see Fig. 1.;. A `hosedlj leading'A from `any;:availabley source of supply, i S` connectedtmthe inlet sidefof this pump, 4while.. a.. pipe 82 leads from the dis,-v charge side thereof `atojaA/olume Ameter 3183. From this meter`r the Wateris conducted byi` ,a pipe A8! hai/ ingoiaJ control valve. y 8. 5 gt o a;;header;-or ,manifold :86 .disposed 4adjaccriiithe front: mixingrotor 6 0 ,(see EiesqB; and 'f 5f).,rwhich,;1 1eader isprovidd with a; pluralitvof iets on spray nozzles l8l which discharge the water against the isadfrotor.: @The machineis equippedfwith a- ;eear pump 8S whifzhmw bea .sed.fdne1ieu ,ofstlie vxifaier system iustdesrhed when 0,11 is employedgasthebinder.

A Vpump aiv (See Fi directlyfrom the mwa isfprovifi @fio ,enligne .-iliiidimcler pressure ,for oneratingthef okay and 15, The wrmeiionsbewn this puiiirii andnthesiacks, and the valvesicf ce i lliiigihe, 'ammore not Shown, as fthenare 0 .pari .0f the @ventise- Hewevee ,the Qontrol wielrenner-Lb@manually mated-hy levers an ate by thelarrows s lhis mixture, temere@ fromme rarfpf the tunnel in more or lessiofa windrow-and in order that it vmay be Spread i9 ihaiullw'fih o. the cut ,made bythev :rotor 45,-

1ireaien com ris: .ieg @n #frame i? attached iQ ,the rear. .ii-the machine- This spreader is Supperted by were alle lplink arrangement 93 ihrouehwhion it `m y be. rraied and .lowered as desired by means 0 f an operating Alever 94 and linkage .95.: Ordinarily the spreader gwiu occupy substantially. the fposif 519D VSimili/nain Fig. ;2,fbut if forfany reasonlfit should lbe desired to leave :the mixture, in windrow form, the spreadingY tramefmayfbe raised. by the leven tto clear ,fthe material leavingithe tu'nneLv lThe spreader .-of Icourse will alsof :bei-raised when 59 the machine Yistraveling ,-toior from la Jobst l" 'Ilhe depth towhch'the cutter 45 worksfand consequently -tlfiey volume lofi `material' V`passed through the machine, may'fbevaried"-atr- Will -t-hrough the tilting-of the mainframe vand. super# structure about #tlie axle 2.9 fbyxnean's- -ff-th jacks 31, whereby the Afront` end yofthe VAmachine together with' -therotorlS may be' raised and lowered.- 'Ihis"""'may lbe a'ccompl-ishedfftlirougsli manipulation ofthe valve controlling the'slaid jacks'v by the operator, -but"'since "lie-may have numerous Yother duties to perforar;Vv it fis de'sir.'v 'able to provide an vautomatic control Vvin'addition to' the manuabcon'trol for"the .jacks 3l. *Such additional con-trol' is of irnportance'falso i In the standpoint' o f 'maintaining 'La Substantially constant 'volume oif mate/rilpassig through' the machine, which is usually'dsirabl :'-Thalt d'0 say,` the ground surface Tin`ad Vance,off the machine lmay be quite uneven; with" alternating elevations and depressionsgand since vthe crawler units .are .disposed adjacent the 'narrowerfpor tion .o f the .tunnel 1struotuie,1they' trav-e1. on che ,Substantially leven Siliae 0I ilhe Padel cui', 5r

both mixing rotors in the same direction, the rearward one at; a. speed higher than that of the forward one.

ARTHUR E. MILLER. EDWIN A. C. EICKS'IAEDT.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,205,948 Popkess Nov. 21, 1916 1,225,547 Willson May 8, 1917 Number

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