US2011894A - Distributor for asphalt and like liquids - Google Patents

Description

Aug. Z, i935, M. ETNYRE 25011.1@94

- DIsTRBUToR FOR ASPHALT AND LIKE LIQUIDS Filed Feb. 25, 1935 4 sheets-smet 1 L-.L L..

71 4 6j I fr @2 Q 6? In f@ y f5 l 1 i umm f4 Lew: e5 H I Aug. 20, 1935. G. M. 'ETNYRE 2,011,894

I DISTRIBUTOR FOR ASPHALT AND LIKE LIQUIDS Filed Feb. 25, .1953 4 Sheets-Sheet 2 Irv/@MEW Aug., 2Q, E935. G. M. ETNYRE DISTRIBUTOR FOR ASPHALT AND'LIKE LIQUIDS Filed Feb. 25, 1935 4 Sheets-Sheet 3 n 9 v n Aug, Z? i935. G. M. ETNYRE Zmg@ DISTRIBUTOR FOR ASPHALT AND LIKE LIQUIDS Filed Feb. 25, 1935 4 sheets-sheet 4 Paienfednug. zo, 1935v Y v rieures George M. Etnyre, Oregon, Ill., assigno Etnyre di Company, Inc.,

,poration of Illinois 2,011,894 p vDrs'rismtn'roie Fon ASPHALT .AND

LIKE

r yto E. I).1y Oregon, Ill., a cor-A Applica'ltion February 25, 1933,.,Se1r1ia1V No. 658,511` 19 Yclaims. (cime- 34) f The inventionv pertains generally to apparatus for applying liquid.- bituminous material, such as asphalt and similar products, to roadways, and particularly has reference to the distributingvsys- ,tem thereof. l f

The general object ofthe invention is to prof.- vide, in a machine of this character, a nevi/'land' improved distributing system of high efficiency and simple and practical tonstru,ction.I`

i Asphalt and similar bituminous materials are vdiflicult'to distribute since at ordinaryltemperaturesthese materials are' solid or extremely viscous.V Consequently, they aredistributed or ap; plied while in a hefated"condition. Difficulty is l encountered in. maintaining the distributng sys-Y tems, and in particular4 the control devices or.

valves therein, in operative ,condition since during any period of idleness the material freezes or partially solidies intoa sticky,` gummi mass which clogs thesystem and preventsfmovement of the control devices. l

An importantobject of the invention", therefore, is to provide lasystem for the distribution .of

asphalt and like materials which includes a ,circulatory system so arranged that everyl control devicein the system may be subjected to the heatl of the material to be distributed'preparatory to actual distribution, whereby control devices which have become stuck or clogged by the material are freed therefrom. r l

in conjunction with vthe foregoing object, said novel circulatory system is arrangedy to maintain all of the control devices in operative condition duringfperiods of Atemporary idleness in thel actual distributing operation. 'Y Y Y Another object of the. invention resides in the.v provision of a novel distributing system which -intribution, or to circulate material 'therethroughl during intervening periods.

. Another object is to provide,

charge of material therefrom, and a circulatory.

system invvhich material may be caused to flow 1 either to or past said devices and embodyingconrol means .operable -in synchronism with said,

devices. f

AAriotlfier object system may beentirely .cleansedcftmaterial re` .maining in the` system, when. operation thereofV Y means in combination with the distributor bar venlarged scale and the viewis v.taken on vvthe g ni va-inademing apparatus, a distributor bar having control de-v vices associatedv therewithfor governing the dis tributor bar. f

of the invention is to `provide a novel material distributing system whereinf the is discontinued, and all such material returned tothe source of` supply. i 4 .f "Another objectisto provide a distributor system embodying adistributor bar anda plurality of valvecontrolled ycirculatory systems in one of which the distributor bar forms a part of the flow path and in another of which the flow pathisV independent of said bar. Y l Another object resides in the provision of a novel control forr the distributor mechanism proper wherein tall ofthe operative'steps may be properly performed in sequence byma'nipulationY of a single control member.

. A further Objectis to provide a distributor, the eifective lengthof which may be varied and in which the over-all length may be reduced toless than the width of the machine to condition the machinefor idle traveling.

A Another object is to provide aldistributor bar in sections which are relativelyr detachable to vfaryVV the over-,all length of lthe bar and which embody end sectionsfashioned to increasethe inherent stability ofv the assembly'and to enhancethe effectiveness of the bar as a whole.

-. `Another object resides, in the provision of novel for vertically or transversely adjusting the bar to meet the varying conditions. encountered' in operation. n y Y Other objects and advantages Will become ap, o parent in the, following descriptionand. from the accompanying drawings, in which?. Figure 1- isa fragmentaryview showing in side elevation the rear end ,of a machine embodying the features of the invention.

Fig. 2'is-a perspective view of 35 n the operators control mechanism. Y l 'l s Fig. 3 illustrates a detail of construction on'an line 3-3 of;Fig.1. .f

= Fig. 4 kis a fragmentary perspectivezview showing the materialdistributing and .circulating sys- Atem of the machine, certain structural vparts be-V ing omitted or broken away for clarity. .:iig. 5 isla fragmentary perspectivegview of a part of thecirculatory system not seen in Fig: 4.

Fig. 6 is aperspectiveview-of a part 'of the distributor or spray bargp.; .v f Fig. 7 is a` transverse'section.through the dis# f 1- 50` Fig. 8y isa fragmentary vview in perspective showing a modiedform of distributor bar. Y Fig. 9'is anrenlarged fragmentaryview in perspective .illustrating adetail of the distributor bar. shown in Fig.,8. i

Fig. l is an enlarged fragmentary View. partially in perspective of a detail of the operators control mechanism shown in Fig. 2.

Figs-ll, 12 and 13 are schematic illustrations showing the distributing system under various conditions of operation.

The present invention, as shown in the draw- Y The general machine organization, as illustrated in the drawings,v comprises a frame I0 adapted to be mounted on a motor truckof any suitable character.' The frame supports a main reservoir or tank II which serves as a' source of supply for. material to be distributed. For convenience this material will `be Yhereinafter referred to as asphalt. A pump I2 located beneath and kat the rear endof the tank II is arranged to be operated from a, suitable source of motive power such as an internal combustion engine I3 mounted on the rear end of the frame I0. The independent engine is preferably employed so that the speed of the pump maybe separately controlled. Y l

`The tank I I, which is of conventional constructionyhas means associated therewith for heating asphalt within the tank. As herein shownmthis means includes heating flues I4 located within the tank and extending between an end chamber I5 at one end of the tank and a similar chamber (not shown) at the other end of the tank. Heating devices (not shown) are located within a housing I 6 forsupplying hotgases to theend chamber I5 and ilues I4. The pump I2 communicates with the interior of the tank through a conduit I'I which may be fashioned as thecasing for a valve I8 (Figs. 11, 12 and 13). lSaid valve is of the three-way type and is' arranged with one port in the-casing in communication with the tank, a second port in communication with the pump, and a third port communicating with an intake lpipe I9 (Figs. land 4)'1 The intake pipe extends laterally of the framel I and is arranged to be coupled with a conduit fromcany suitable source of supply.- Thus, the

valve IS inV one position thereof controls the ow of asphalt from the tank to theY pump .and in another position directs the flowv of asphalt located within a housing 22 and gears disposed within a gear casing 23,

The pressure or. discharge side ofthe pump i2 communicates through the medium of a downwardly and rearwardly extending conduit" 24,wit`h header 25, 26 (Figs. 1 andfl) which is rigidlyV secured tosaid conduit and extends transversely jof the frame in opposite directions from the conduit. At eachrouter end-of the header 25,l 26 a rearwardly and horizontally. disposed pipel21, 28 is attached. VThe pipes12l and 28-communicate with valve housings 29 and 30 for three-way valves i3I and 32. The valve housings29 `and 3|lhave conduits.

rearwardly extending pipes 33and 34 communicating therewith and a third port in each housing is connected with the lower ends 35 and Y36 of a lU-shaped circulating pipe 31 which extends upwardly into the interior of the tank II. VThe top of the U-shaped pipe is located near the top of the container and the central portion of the bend is cutaway as at 38 (lig. 5) vso that the legs of the U-pipe form` substantially independent The outer ends of the pipes 33 and 34 are connected with exible conduits 39, 4i) respectively which, in turn, lead to spaced points on a distributor orA spray bar, generally designated 4I. In `the construction shown in Figs. l

`and 4, the connections between the pipes 33, 34

and the flexible conduits 39, 4I! are preferably such that the flexible conduits may be readily detached and, inthe present instance, clamps 42 are employed. `As illustrated in Fig. 8, the connectionsY are not necessarily vdetachable Vand are a well-known type of swivel connection 42a.v

The distributor bar 4Iis for the purpose of delivering an even film or'layer of asphalt and the like upon the roadbed and comprises an elongated tubular casing 43 which -is supported from the frame by means to be presently described. Longitudinally alined along the lower portion of the casing are a pluralityA of spray nozzles 44, of any suitable construction, having communication through suitable vorifices with the interior of the casing. In the present instance, flow ofV material through each ofthe'spray nozzles is individually controlled by a valve located within the central portion of the casing and regulated by a valve operator 45 extending through the top of the casing. l

The valves are 'of such size that they do not materially impedethe Vflow of asphalt through the casing. A preferred arrangement is shown in Fig. '7 wherein tubular valve housings 43@ extend from top to bottom through the4 casing 43. The' spray nozzles are suitably mounted in the Ylower ends of the housings 43a and the valve operators extend through plugs 431D in the-upper l nozzles 44. Springs 45c within the housings vhold the valves'against their seats.

The Valves are arranged to lbe actuated simultaneouslyandto this end each operator 45 has a laterally extending arm 46 (Figs. 4, 6 and 7) rigid therewith. The outer end of each arm 46 is pivotally connected to a bar 4l. One of the valve operators, herein the one designated 48, is elongated and at its outer end has a 'second arm 49 extending radially therefrom. AV link 5B connects this arm v49 with-one end of a bell crank lever 5 I the other end of which is connected with the link 52 constituting a connection with the after described.

The distributor is arranged normally to extend transversely from one side of the machine to the other and may be 'fashioned as a single unit, but

' operators control mechanism, as will be herein- .since'occasionsimay arise where it will be desir'- able to apply a strip of material of greater or less Ywidth the present embodiment makes provision for adjusting the over-all length of the distributor. Thus, the distributor is formed in sections, three of such sections being herein shown. The

central or intermediate section is permanently aangeeft replaced by other" sections of similar construction, but of diierent lengths.

As shown in Figs. l, 4 and 6,'the distributoris in Ythe formv of a straight tubular pipe, the endsections `being straight continuationsotthe middle sections.ALsuitab1e means for detachably securing these sections together comprises collars 53, 54 (Fig. 6) mountedfonthe endsof vthe sections to be joined, which collars'are arranged to be" drawn into' close abutment by means of hooks 55' eccentrically mounted on the arms of a lever action yoke56 pivoted'to one collar, said .hooks being iengageableror disengageable, in the swinging movement of said yoke, withstuds 57j carried by theV other collar. The elongated bar il for' operating the spray nozzle control valves is Vdivided betweenvalves on different sections and any convenient and readily'detachable-means may be provided for operatively connecting these bar sections together. The flexible conduits 39, Il() are, in this arrangement, detachably secured to opposite ends of the distributor casing by'swivel connections 58. In consequence of the above construction',` when ,it is desirable to increase or diminish the width of the strip of asphalt to be applied, it is only necessary to uncouple one or the other or vboth outer sections oi the casing, disconnect `the adja-y cent sections of the valve operating bar 41, une couple thek swivel connections 59, replace the outer'section with another section of proper' length, and reestablish the connections. Another inherent advantage in the sectional disltributor casing is that the end sections, together with theirvrespective vflexible conduits, maybe entirely removed when the machine is 'travelingy from one vplace to anotherthereby eliminatingv the possibility that the'distributor bar 'might be damaged by passing objects. f,

As shown in Figs. 8 and 9, the distributor may have a somewhat modifiedconstruction. ,-Each `end section 99 comprises a tubular member hav-' ing a return-bent part 9i forrningaV U-shaped structure.' The arms ofthe U are closely adjacent and are ofsubstantially equal length. Only one arm 92 of these end sections is provided with' spraying outlets and these arms are secured to the'middle section. The exible conduits 39,v 40 v are connected with the corresponding ends of the arms 9 l.

carries a laterally extending support 93 for a yshort nipple 94 to which the corresponding'flexible conduit 39er 40is'connected. 'Ihe support 93 is recessed about the ends oithemiddle sec- The ad-' jacent ends of .the end sections are connected byf a generally similar support 96 but the ends of tion and nippleto receive gaskets 95'.

the'section extendbeyond the face oi thesupport to t into the recesses and against' the gaskets; A sealed connection is formed in this man- For connecting the partsrigidly together, one support, in this instance the support 93 on the middle section, has a pair of upstanding lugsl 91 on the upper side thereof which support therebetween a' pin 9 8' for rengagement byan upstandin g'hook 99 on theother'support.` Such'engagement positions theV conduitends in the recesses and disposes the flatfaces of ,the two supports in opposition. "At spacedpoints on onesupportfare- To facilitate the assembly of the struc'- tur-e, it is preferred to employ such means thatV the connection of the end section with themiddie section and the flexible conduit mayY beac-v complished in a single operation. To this vend (see Fig. 9) the middle section, adjacent its ends,V

sturdy'and'the'outer ends of the'complete distributor` cannot sagheven` thoughthe end sections are of considerable length. Moreover, the connections may .be Vquickly and easily made or brokenf.` As a further advantage', the flexible conduits; .are disposed Ain a protected position entirely within' the confinesof the `frame;Y are of a constant minimum length, and are alwayssupported out ofpossible contact-with the road. r,T he rend Ysectionsf'mayv be provided in standardizedv lengths with the shortest beingfsubstantially a1 U-sha'pedcap'employedto minimize thevover-n all lengthyet permit circulation through the .dis-` tributor While 'the machine is4 being transferred. The control mechanism for the'distributing sys= ,tem will` now be described. The valves''l' and 32 are each provided with an upwardly extending" valve operating rod 59 and 60 (Figs.` 1 Vand 4),l

respectively. One of the operatorsfin this em-v bodiment the operator 59, has the manually rnanipulable control elements associated therewith.

' With--reference'-to'Figs. 2 and 10, the valveloperator 59 vhas a'hand lever 6I rigidlyaixed to its upper end.` Immediately below the handlever -ol is a second'lever 62 journaled on the valve op# er'atorz 59 for relative rocking movementand sup- V ported in place byabracket 62a. The lever 62 is inthe natureo'f a bell crank lever, the short arm 63 ofwhich is pivotally .connected With a rod 64 1 which Lextends transversely of the frame of the machine to engage a'lateral arm 65 (Fig. 4) rigid with the upper endof the valve operator 60.

" An intermediateportion of the valve operator-- 59 carries anelongated, relative rotatable sleeve',

f ES. The upper end of the sleevev 66 has a later? ally extendingr lever 61- rigid therewithl and the lower end ci the sleeve carries' a lateralnger 68. The linkf52 (Fig. 4),-Which forms a part ofthe mechanism for-'actuating the-spray nozzle control valves,v is pivo-tallyv connected with the nger 98. The sleeve GS ,rotatably rests onl a collar y(59 rigid withthe Vvalve operator 59'. A spring 19 isinterposed between a` second collarl 69a at the upperend of the sleeveand the bracket f `62a tomaintain the partsin operative lm lstion'..`

While each lever 6 i, $2v and 61 may be arranged u for independent manipulation, itis preferredto provide an.` interconnection therebetween .where ,by Vall of theA several operative movements may be obtained in proper sequence by asingle control lever.` One form of such control mechanism, "designated 1|, is best seen in Figs. l, Zand 10.

For convenience, the mechanism may betermed a control quadrant andr embodies a frame4 having three arcuate segments 12, 13 and 14 which are rigidly secured together in vertical spaced reof the valvefoperaton Silas` a center. The hand i lever 61 is intermediately'oiset toplace'the outer end thereof Lbetween `the two lower Vsegments 'i3'y and 14. Thelever 62 projects between'the/ upper Vand vmiddle"segments 12 and13 and the lever 6I overlies theupper segment 12. Y

InA the present arrangement oi parts/when the various valves arefinl their normal position -or,'

in Yother words', Y`arein that vposition from' which al1 operations-start f (se'e Fig. 8) ',1 the controllevers s l; e; and i-l-(seegsigfz) have the following re lation'ship to each other'and to the quadrant seg-j ments. lThe levers 6|, 6.2 are vertically alinedand )oVVK lationship. Thesegmentsfa'resuitably secured to the frame of the vehicle about thefupper end Vdownwardly,` v The outer ends ofthe levers 62 and A6'! are longitudinally recessed or notched,as indicated at as at theleft-hand end .of the quadrant.. There-V maining lever E1 is located atthe other jextreme.

or at the right-handend of'the quadrant.A In this position, the., distributor valves are closed and the valves 3 I, 32 are positioned'to. connect the header 26 withthereturn pipes'l.v 'V f The levers 62 and 6l are'arrangedfonproper` actuation in sequence byftheleverGI. ;-Thus, the lever 6 I; as best shown in Fi'g10',extends lbeyond the frame VWhile-the othenleversxerminate ad jacent thereto.` The projeotingwend-,II fgof thel lever 6I is fashionedfasa handpiece andfharriesy a pair gofdepending bosses VIII between-which a nger I I21is` pivofted to extendahoriaontally to-` ward the frame and partially into overlying relation` to the rniddle,,segment` 13. Agvertical rod II3 slidab-ly mounted in-theyoutenend oftheV levergfj, has its lowerY end pivotally conne ct ed .with the finger I-I2 and .nits-.upper end carries a manipulating member I. I A spring II 5 is.in. terposed between thefinger H2 andleverend I "or swinging said iinger,

I.II and exerts a force I I 6 and I I'I, respectively, to receive the end of the iinger IIZ whereby to latch either lever 52 `or 6l' to the lever 6I for-actuation thereby. At that end of the frame atwhich the lever 61 is normally located (the right-hand end in Fig.- 2), the middle segment 'I3 is notched, as, at IIB (Fig. l0), to allow the end oi the iinger to move-between the levers 62 and 61.

In the normal position Hence, movementoffthe lever E I out of normal position alsof-moves` the lever 62.

substantially 180 of movementuntil the end of the finger `i I2 is `opposite the notch. I I8 in the segment 73,at which pointthe spring IIS forces the ringer downwardly through'the notch IIB into engagement with thenotchI I'I rin the lower lever El to latch the levers 6I and 6l together, An. intermediate stop 'I la (Fig.- 2) between the two lower segments 13.14 limits'movement of` 1 the lower lever 6l to approximately 90.y It will be seen,vthereiore, that the levers 6I vand 6 2 may bem-ovedout of their normal position through an arc of 1803 while the levers'iand lfhavelconjoint movement vof only 90 in a reverse direction in moving the lever Si ,out of the'normal position thereof.

As has been mentioned, lever 8i is directly con?.

nectedwith three-way vvalve -3I so that said valve tated in. a clockwise direct' a suitable lostI motion, ccnnectionis provided which, inthis instance, comprises arranging theVV short arm V63er the'lcver 62and theV connecting rod 611 ,(seeFig. 22 so that-the rod is swung lat- `erally in the first vmovernent of, the'lever 62- throughV` approximately. .90,1without movingv the; valve 32 toanyextentw:Theilever'iuissovconv nected with thedistributorvalves that clockwise opnsthe. valves! a of the parts, the finger II2 is engaged with the n otch'I I6 in the lever-62V and is restrainedqagainst movement out of suchl engagement .by ,the underlying; segment 'I3'.`

The lawhed.; relationship of saidlevers is maintained throughl e 2,011,894"V are disposedat one extreme limitlof `movemeiiiz:`

The relationshipjof theparts and theopcrad tion of the distributing system, under various operating conditions, l is as follows, it being presuinedthat the supply tank IIy is empty.; in order tojflll the supply tank, the intake. pipe vi9 is connected with a source oi supply, the control elementsfare intheir previously described normal positions, and Athevalve I8 is turned to connect the intake Vpipe i9 with the inlet side of the pumpv I2. Whenthe pump is in operation, as phalt' will be drawnlfrcm the vsourcefoi supply through the intakefpipe IB, valve i3 to the pump I2, and thence rforced in a'iiow paththrough the header 25,26; pipes 2 7, 28; valves 3|, 32; lower ends 35, 3Sof the U-shapjed pipe 3l, to discharge through the recess .38 into the` tank ii (Fig. 1l). This ilow path, it will be observed, isfindependent of ,the vdistributor bar e8.; Y f' After the tank II hasbeen filled, the valve I8 is turned to establish communication between the tank andl the pump through the conduit Il. This is the normal-position of the valve I8. If the position lof the other control valvesremain unchanged, the yresulting rrelationship is that which `the parts occupy while Athe machine is traveling `frombthe filling station to `the place where actual rdistribution is vtotaireplace. It will be `seen that circulation of the. iiuid .through the supply tank! I iszthereby effected, wherebya uniform `ternpei'amire of the asphalt isproduced and maintained without danger of overheating the asphalt. l' f f To condition the systenrfor a distributing operation, asphalt is caused t'o circulateirom-the tank throughand past all of the valves in theJ tablish communication between. one end ofthe;

distribut0r,-through the rearwardly extending pipe133, and the lower end 35. of the circulating pipe 3f'I. The; lever is simultaneously moved through 180 andthe last 90 of such movement is Veiective to rotate thegvalve 32 clockwise through 9 O,..there`cy connectingthe header 25 with the other Vend of the distributor. The cir- 'culating ilow' of asphalt isjtherefore, from the tankv I I through the conduit il, valve i8, pump I2, conduit 24, header section 26, pipe 28, valve 32, pipe 35, flexible conduitl, distributor cas ing,v 43,:fiexible conduit 39, pipe 33, valve 3|, end of U-shaped circulating pipe .'-i'I todis'charge through recess into the tank.

: The heat of the, asphalt as lit'passes .through this circulatory system liquefies. everyLparticle of material which might have remained therein .from a previous Operation and, in particular,

cleans allv of the .spray controlvalves 35a and places them in conditi-on for immediate operation. AshasV been mentioned, this 4circulatory system is employedprior to starting any distributing operation, but it may also be employed parison of the valve positions as shown in Figs. 11,

1 2l and 13. V`The valvel, in moving from the position Vshown in .Eigi vil through thatshown in Fig. 13to that of Fig. l2, passesV intermediate positions wherein the passageways through i the valve overlap and connect the three portscon- The relationshipof both valves in operation is such that said intermediate connections occur at the same time. 'As a result, it is impossible to position the valves in such manner that av ow vthrough the conduits is entirely prevented, thus eliminating all chance of destructive pressure being built up'within the system.

The direction of `flow of asphalt through the system during distribution V`is illustrated in Fig. `1 3. lAs the lever 62 moves over the notch H8 inV the middle segment, the finger H2 vmoves downwardly through said notch into engagement with the 'lever Gl. Hencafmovementoi the 'lever B lnow carries lever 6l therewith andthe extent of movement4 of both `levers. is limited to 90C by thestop ille. If` distribution ofl asphalt is to be made, the operator swings the hand lever Bl clockwise and theaccompanying movement of the'lever-l is translatedthrough the sleeve 66,

ngerii, link i52, bell crank lever V5| link 50,- arm` AS, Vvalve operator 48, bar- 41 and the lateral arms 46 on'the valve operators 45 to open'the spraynozzle control valves simultaneouslyE ,Y

The clockwise movement of hand lever `El through 90 returns the valve 3| into theposition shown in Fig...1'3 in which.` the valve connects. the associated lend of the distributor with the pump through `the header section 25. The fluid ow is, therefore, from the tank li .through conduit ll, valve i8, pump l2, conduit 24, through both header sections -25 rand 26, pipes 21, 28; valvesi, .32; pipes 33, 311; flexible conduits 39, 4Q intoVV both ends vof the distributor casing 43 tor discharge therefrom through the spray .noz-

zles V1M. y y An important feature of this distributor system vresides in the delivery of asphalt to both ends of the .distributori since smallery fittings, vconnections andvalves maybe used vthan would otherwise: be

possible. Moreover, such delivery to "thedise tributor assures Vdelivery of asphalt'to every spray Y nozzle at relatively unif-ormpressure.

untilthe operator moves: both Y, to the 'right-hand end'of the `quadrant (thereby closing the distributor valves and conditioning the system for circulation through 'the distributor), manually raises the lnger I i2 by manipulationv of member.

il!! into engagement with the notch H6 in lever 62, and vmoves lever 62 slightly to'carry the finger out of. registration 'with the notch H8.'

Consequently, the operator'rnay change the system from distribution to circulation through theV distrilzutorr by the movement ofa single lever.

yThis is advantageous since, when the machine is. in operation, these v*two control positions are'ethe onesf'most frequently employed.

hi returning theV systernl to normal, the ger l l2 is caused to engage the lever B2 andflevers tl and 62 aretheh moved clockwise tothe starting position, f

When it becomesnecessary to discontinuethe all of thisdrainage returnedtothe supply tank.v Thus, itis `presumed that distributionhasbeen stopped and that the operator has returned the system'to the condition 4 shown in 12 wherein a .circulatory flow through the distributor bar is produced. A.short auxiliary section of flexible conduit lila is conneotedat one end with the intake pipe I9v and at its other end with a source f of air or gaswhichmay be, if desired, heated.

If lthe air or gas is heated, tl1e source may be --a heatingvcasing ila (Fig. 4) which encloses the operative parts of the system. Reference`to-my aforesaidpatents may be had for amore particular disclosure -'of a casing of this nature.`

After this connection has been established, the valve i8 is turned to thepositlon thereof shown in Fig. 11 .whereby heated air from the casing will be drawn intothe pump and thence'forced through the system. In consequence, the residual asphalt is returned, by the force of the heated air, Iinto the supply'tank I l. When the distribu-v tor bar has been drained, movement of the valves 3l, ,32 int-o the position shownin Fig. l1 will practically complete the process of draining the asphalt intothetank The amount of material remainingv in theisystemy is inconsequential and may be drained upon the road when operation is stopped for anylength of time.

While it is preferredtorutilize hot air or gas to cleanse the system, in order to preventsolidifi-` cation lor 'materialY by the air, under favorablev circumstances `a part of the system may be opened directlyrto atmosphere, asby connecting the in take pipe withgthe` pump, and `airunder abnormal atmospheric'pressure employed to effect drainage j of the system. I t-willbe evident that all of the asphalt in the'vcirculating systemwill be with.

drawn from lthecirculatory system and returned to the supply tank;` thus preventing solidification ofV asphalt* whichwould result Vif the system were' notdrained, orjwasteif all of the'asphalt remaining in the system were allowed to drain upon the roadbed. Q

Preferably (seeFig'. 4), the connections` atthe inlet and outlet ends' of the distributor are turned v l upwardly and downwardly respectively to eliminate pockets which vwould vhinder a complete .draining of the system.'l For the same purpose (see Fig. 8)', the return' portion of the U-shaped section attheinlet end of the distributor islevel with orgabovetheplane of the rdistributor while the'return portion Vat the outlet endis below Saidv r Means isprovidedfor adjusting the distributor bar vertically and laterally with respect to the roadbecland such adjustments are controlledV from a'position convenientv to the operator. To

this end, a hanger 'l5 (Figs. 1 and Ll) is securedk tofeach sde'o the 4frame Ill andthe ends 'it thereof supporta transverseishaft -l'l which is rigidly `connectedcwithvbracketsfl at each Vend to mountthe brackets for pivotal movement on a horizontal axis. rEnlarged arms-19 have one end fashioned as a yoke 18a to straddle the brack-v ets 18 and thearms are pivo-tally secured thereto by apin'lb for movement onvertical axes. v

v The arms 19 extend rearwardly of the' machine' lars V80e. "on the-distributor bar for engagement' by the armsof thevyoke 80. A lever v82, pivoted bar vwherejthe lever is` connected by a horizontal link 84 with one of the collarsy a. tributorfbar is, by this construction, supported- The, dis- 70 l as lat 8 3`to the frame 'of the-machine; extends downwardly to a( point adjacent the distributor'- traveling.

for lateral adjustment from sideto ideV under the control ofthe lever 82. 'l f The shaft Tl has one end of an elongated bar 85 (Figs. 1 and 3) rigidly Secured thereto. The other end of the'bar 85 is pivoted to a link 85 which, in turn, is pivoted to the short arm of a bell'crank lever 8l. 'I'he bell crank leverV is pivoted to the framevof the machine and the long arm'thereof is formed as a handle. Movement of the bell crank lever in one direction or the other is operable to rock the shaft 'l1 and thereuponadjustthe distributor bar vertically with respect to the roadbed. Moreover, by thisV vertical "adjustment the distributor bar may be elevated 15o-facilitate the operation of draining the system, as well as to prevent injury thereto while with reference to Fig. 4, it win-be seen 'that Vthe bell crank lever 5|, which'forms a part of the spray nozzle valve actuating connection, yis

pivoted for movement on the pivotal connection between the yoke- 'I8a and bracket 18. The pivallows the valves in the distributor bar to be actuated in any position of lateral-*adjustment of the distributor bar. Y

From'the foregoing, it will'be evident that av novel distributing system has been provided which embodies a circulatory systernby which all of the control elements may be subjected to the heat of the material to be distributed in order to condition the system for efcient operation. Moreover, the circulatory ysystem.isrcapable of being completely drained of all material remainingtherein after distribution `'has ceased, withincluding discharge valves and means for operat-v ing Vsaid valves, a circulatory system connecting-7 said tank and bar for producinga flow of-materialfrom andVv to said tank through saiclban'l means for selectively directing a ilowof materialv from or to'said tank adapted for concurrent operation with said operating meansapump interposed in said system for` eiecting such 110W of material, and `means for delivering air to the intake side of said pump-,toiexhaust Asaid sys- I discharge of material from said'bar.

tem of .material land deliver the 'material to the tank when said valves are closedto charge of Vmaterial fromsaid bar. v

2. In a distributor'system, the combination of arsupply tank for material, a distributor. barlincluding discharge valves and means `for operating said valves, a circulatory'system connecting said tank 'and bar` for producing a flow Vof Inaterial from and to said tank through said bar,-

means for selectively directing a fiowjof material from or to said tank adapted rfor concurrent operation with( said operating means, a pump interposed in saidsystem for effecting such ow of material, a source Vof heated gas, and

means-for delivering heatedA gas from saidsource to thev intake side of said pump to exhaust' said system of material and deliver the material to the tank when said Valves are closed tojprevent prevent dis- 3."In adistributing device of the character described, the combination of a frame, a distributor bar` arrangedV in horizontal transversely eX- tending relation to said frame, and means for `relative movement on a vertical axis, means secured -to said shaft for rockingV the same to adjust the`distributor bar vertically, and means for moving-said arms to shift said distributor bar transversely, v

4. In a liquid distributor system., the combination of Va tank, acirculatory system leading from said tankA and having two branches returning theretoja distributorbar, conduits connecting said'branches with said bar near Vopposite ends thereof, valves interposedfbetween said branches and each of said conduits, said vvalves having one control position f wherein a owffrom the:

tank is-returned thereto through said branches independently of said distributor bar and having another' control position wherein-a flow from fthe tank 4is gdirectedfrom one conduit to the other through said distributor'barand returned to the tank throughV oneA branch, and a single operating `means for moving said valves `from Yone tothe-*other of said controlpositions.

5. In aliquid distributor system, the combination' of'a tank, a'circulatory system leading from said tank andhaving two branches vreturning thereto, a distributor bar having valve controlled discharge 'outlets therein, conduits connecting said branches with said bar near opposite ends thereof, valves interposed between said branches and said, conduits, 'said valves having one ilow controlling relation wherein a iiowfrom the tank is returned thereto 'through said branches, a

second Yflow controlling relation wherein ay now from the tank yis vdirected Vfrom one conduit to thev other through said distributor bar and returned to the tank through one branclnand having athird flow controlling relation used When the distributor bar'outlets are open in which a flow from the tank isdirected to the distributor bar through both conduits, operators'for said valves, anda -isinglezcontrolmember connected with saidop-V eratorsy and movable tol actuate said voperators and valves inpropersequence.`

6. In a fluid distributing syste-mbt the character described, the combination of a reservoir for fluid, a pump, a hollow distributor bar through which iiuid may' owsaid bar having a number of discharge orifices therein, valves controllably associatedV withv said oriices,l conduits connecting said vreservoir with the opposite ends Vof said bar, flow directing valvesfinterposed in said conduits operable todirect a flow of iiuid throughsaid conduits and from one end of said barto-thefother when the orificecontrol `valves are closedor to 'direct a'fl'ow into both ends ofthe bar'vvhen the orifice control valves are.QlQ&I1.,fand a single contro-lling member connectedwith"all of said valves and operable to substantially simultaneously actuate said orifice control Yvalves and rsaid flow directing valves to directlthe corresponding ilow to the bar;

7. In a Vliquid .distributing system having a sourcel of Vsupplyand a'distributor, the combination of :intermediate connecting Aconduits provid'ing a circulatingfow path independent of the distributor-or a second circulating now path which includes the distributor or a distributing circulatory flow 'flow"path through" the .`distributor, means 'for forcing .a circulation of liquid through theV system, .valves icrdirectingfthe liquid ow through yeither circulatory pathor thefdistributing path,

other valves controlling a flow from'the distributor, and a single control member connected with y said Valves for operation thereof.

8. In ar uid distributing system having.. a source of supply Yand a distributor, thecombination. of intermediate connecting conduits pro-V viding :a circulatingfiow independent of the dis'- tributor or a second circulating flow which` includes the distributor or a distributing owv `valves. i

r`acter described comprising, inV combination, a

40 .tubular casing formed of a plurality .ofvaxially V9. A :distributor bar for a machine of the character described comprising, in combination, a tubularcasing formed ci a plurality of axially alinedrsections, each of said sections havingfa series of discharge orifices therein, the end sections of said casing having return bends'therein for disposing the opposite endiaces of said sections substantially side by side in approximately Y the Ysame plane, and means for detachably securing all of said sections together.

l0. A distributor bar for a machine of the charalined intermediate and 'end sections, each of said sections having a series of discharge orifices therein, the end sections of said casing being generally il-shaped in form, means for securing vone armV of each end section to an adjoining end of the intermediate section, and conduits for conf nection with the other arms of the end sections.

-' il. in a liquid distributor systemthe combination oi a tank having a conduit leading therefrom, one circulating system leading from said conduit and returning to said tank and including a distributor bar as an intermediate partthereof, a second'circulating `system including Va. part-of rsaid one-system and leading from saidl rconiiluit and returning to said tank independently of said distributor bar, and control valves operable to direct a dow of liquid through one or the other of said systems. l n .Y

l2. In a liquid distributor system, the combination oi a tank, a circulating system leading from` said tank and returning thereto, a second circulating system including asa part thereof a substantial portionoi vsaid iirstV mentioned system and leading from said tank and returningthereto but including a distributor bar as an intermedi- "ate par.J thereof, spaced controlV valves operable to direct a now of liquid through one or theother of said systems, anda single manipulable member for actuating said valves together. i

13. In a liquid distributor system, the combination or ,a tank and liquid conveying means leading therefrom, a circulatory system leading from said means and having two branches returning to said tank, a distributor bar, conduits connecting said branches with said bar near opposite distributing flow, valves controlling `a ilow .from ther memberv ends thereoand .valves insai'd circulating system. interposed betweenzsaid branches and said conduits, saidA valves having one control fpositionwherein a flow from said means is returned to said'tankfthrough saidjbranches independently C" ci. said distributor bar and havingpanother cond trol'position wherein a new from said means-:s

Vdirected from onefcon'duitito theother through said",distributor-*bar and returnedito; the tank throughone branch i j 1 f g' '714.11m a liquddistributor' system, theY combinationrof a tank, .liquid conveying means leading iro-m said tank, a circulatory system leading from said means and having. two branches returning to said tank, a distributorbar having Valveconnecting said brancheswithV said bar near opposite. ends thereof,` and `valves in said circulatory Y system interposedbetween said branches and said Y conduits, said valves having onel ilow, controlling relationwherein a flow from said means is returned to said tank through said branches independently of said distributor bar, a second iiowV controlling relation wherein a flow fromthe tank is directed from one conduit to the other through said distributor bar andy returned tothe tank 4through one branch, and having a third flow controlling relation used when the distributor bar outlets lare open inwhicha ilow from the tank ,isj

directed to the distributor bar through both conduits.

the character described, of a reservoir for-macluding a 'plurality of discharge valves and positioned in a plane below the lower part of said reservoir, means for creatingan abnormal atmospheric pressure in the system, and connections betweensaid'distributor and said reservoir for draining `residual material in said distributor into said reservoir under the force of said pressure.

16. A distributor Adevice comprising, incombination, a' tank for liquid material to be distributed, a system of circulating and distributing conduits including a distributor member including discharge Valves operable to permit said material to flow therefrom, said member being in a plane below the lower part of the tank, and means ior forcing substantially all of the residual rma-r terial in said system into the tank when discontinuing operation of the device.

l'l. A Vdistributor device comprising, in combinaticn, a tank, a circulating system for filling said tank, a second circulatory system including l5. The combination, in adistributor system of a part of said first mentioned system anda distributing bar `as ai separate part thereof and adapted for maintaining a circulating iiow of material while the device is not distributing material,V andcommon control valves interposedv in said'systerns and operableto direct a flow of material through one or the other of said systems or from said systems to said tank for drainingmaterial from all parts ofk the systems to the tank. distributor, the combination of' i8. in a iluid a supply tank; and a circulatory system connected thereto comprising adpipe line from the tank having a pump interposed therein for` effecting a now of material from the tank; an intake pipe communicating with the inlet side of said pump; branch conduits communicating with said pump and leading directly to said tank; a distributor bar; connections extendingfirom said branch conduitsV to. opposite "ends of said- Vdistributor bar; Vvalves operable to direct-the iiow` l5V trolled discharge outlets therein, conduits con-z, Y

from said tank'through said line and to said tank through said branch conduits, connections, and distributor bar or through said .branch conduits independently of said connections and dis# tributor bar; and means for admitting fluid to v said pump through said intake pipe whereby said fluidmay be passed through said system to force the material therein into the tank.

19. In a distributing device of the character described, the combination of a frame, a distributor bar arranged in transversely extending relation to said frame, means for supporting said distributor barv from said frame including a shaft mounted for rocking movement, spaced brackets secured to said Shaft, arms'pivotally connected at their ends adjacent said distributor bar and pivotally connected at their opposite ends With said brackets, means secured to said shaft for 'rocking the same to adjust the distributor bar,

andY means for moving said distributor bar and 'arms to shift the distributorbar transversely.

GEORGE M. ETNYRE..

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