US1101869A - Carbureter. - Google Patents

Description

T. P. MCGUIRE.

GARBURETBR.

APPLICATION FILED PEB.14,1912.

Patented June 30, 1914 3 SHEETS-SHBET 1.

T. F: MCGUIRE.

CARBURETER,

APPLIGATIOL? FILED E22, 14. 19:2.

SSHBET SHEET 2.

QXMMQW.

Patented June 30, 1914.

T. F. MCGUIRE.

CARBURETBR. APPLICATION FILED IEB.14,1912,

1, 1 O\,869, Patented June so, 1914.

3 SHEETS--SHEET 3. I

\ y? m g qua wtoz UNITED STATES PATENT OFFICE.

THOMAS F. MOGUIRE, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, T INTERNATIONAL ACCESSORIES MANUFACTURING COM- PANY, 0F WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

CARBURETER.

Specification of Letters Iatcnt.

Patented J une 30, 1914.

T aZZ whom it may concern Be it. known that I, THOMAS F. MCGUIRE,

a citizen of the United States, and residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Carbureters for Hydrocarbon-Enginesmf which the following is a full and clear specification, illustrated in the accompanying drawings, the novel features of my invention being more fully pointed out 1n the annexed claims.

My invention relates in general to carburetors for mixing liquid fuel with air to )roduce a combustible mixture for use in hydrocarbon engines.

In particular my invention relates to the type of carburetors in which with the increased admission of mixture to the engine the air supply and fuel supply is increased in such proportion that the mixture admitted to the engine always is made of such quality as the engine requires at the particular speed and power intended by such increased admission of mixture.

In particular-my invention relates also to. the form of carburetors illustrated in a copending application of Elmer S. Smith for carburetors, Serial'No. 626,678, filed May 12th, 1911, my inventionbein an improvement on the form illustrated t ierein.

The object of my improvement is to make the fuel supply throiwh the jets, which are mounted on the rotatable gasolene container, dependent on the operation of the engine, that is to say to cause the jets to yield fuel only when the engine is running, contrary to the arrangement in the aforesaid application where the jets yield the fuel so long as they are submerged below the gasolcne level in the container. By my improved construction I am also enabled to bring for any given angular position of the rotatable gasoleno container any desired number of nozzles into action and if the engine should require it to bring on further angularly moving the container, a smaller number of jets into action.

In the accompanying drawings, Figure 1 is a side elevation of my imiroved carburetor; Fig. 2 is a longitudina vertical section through the outer shell of the carbureter on the line 2-2 in Fig. 1; Fig. 3 is a similar longitudinal vertical section through the gasolene container within the shell as shown in Fig. 2 the container being shown m lar or scale- Fig. 4 is a plan view of the lower owl of the container; Fig.5isabottom view of the upper half of the container shown in Fig. 3; Fig. 6 is a longitudinal vertical section through the lower bowl on the line 66 in Fig. 4; Fig. 7 is an inside view of the two opened semi-sphericalshells of the carburetor which are shown closed in Figs. 1 and 2; Fig. 8 is a section through a modification of the lower bowl similar to the section shown in Fi 6; Fig. 9 is a vertical section at right ang es and on the line 9$) to the section shown in Fig. 8; Fig. 10 is a further modification of the bowl shown in Fig. 6.

he 'eneral form of the carburetor as shown in Figs. 1, 2 and 7 comprises substantially semi-spherical shells 1 and 2, which are hinged at one side together as shown at 3 in Fig. 2 and locked together at the other side by a suitable lock as shown at 4 in Figs. 1 and 2. The upper shell which is more closely semi-spherical than the lower shell is provided at its upper portion with a mixture outlet 5, whereas the lower shell 2 is formed b a cylindrical rim 6, which is hinged and ocked to the upper shell as previously described and which has attached to its open end a basket 7 preferably of wire auze, these two elements, the rim 6 and the 'asket 7 forming the air inlet of the shell. The upper and lower shells are provided at their a utting surfaces with diametricallv oppositely arranged trunnion bearings, each of the shells havm one half of the l'iearing integral with it w iich, when the shells are assembled, re isters with the corresponding half of the ot 101 shell. In Fig. 1 the trunnion bearings integral with the lower shell 2 are shown at 8 and those integral with the upper shell 1 are shown at 9 and 10. In these bearings is jonrnaled the fuel receptacle 11, by means of trnnnions 12 and 13, trunnion 12 being located in bearing 8, 10 and being provided with a transverse slot 14 in which a lever 15 is suitably fastened, the upper half 10 of the trunnion bearing being cut out as shown at 16 in Fig. 7 to permit arm 15 to ass to the outside. The cut out 16 has $11 cient angular extension in the wall of the bearing to permit lever 15 to rock through a certain angle and it thereby serves simultaneously as a limiting etc) which determines'the angle through whic the receptacle can be tilted in either direction from the normal position.

The fuel receptacle 11 is of the following construction: As will be noted from Fig. 3 it. consists of two halves joined in a horizontal plane, the lower half 17 being a substantially perfect semi-sphere, whereas the upper half 18 is cone shaped with a flat top and a recess 19 in the top. The two halves are joined together'by means of a screw bolt 20, which rests with its shoulder 21 in recess 19 of the upperhalf of the receptacle and which is threaded at its lower end into a central boss 22, provided at the lower portion of bowl 17. The upper portion of screw bolt 20 extends a suitable distance beyond shoulder 21 and serves as a guide for the mixture valve 22$,which is seated against the mixture outlet of the upper outer shell 1 of the carburetor as shown in Fig. 2. This valve is yieldingly held on its seat by means of a spring 2% seated'in recess 19 of the upper portion 18 of the receptacle and furthermore prevented from rotating on bolt 20 by a pin 25 fastened in the receptacle top and engaging in a corresponding recess 26, provided in the under side of the valve. There is also a radially-extending cam 27 provided on the upper side of the valve which when the reoeptacle is tilted to the right (Fig. 2) bears against the valve seat and de )resses the. valve sons to further increase t e opening through which themixture passes when the receptacle is tilted at acertaln angle. These features are described and claimed in detail in the aforesaid a )plication Serial No. (326,678, and are mere y mentioned and illustrated in my application to show the complete carbureter to which my improvement refers.

Inside of the fuel receptacle is located a float 30 which is attached to float arm 31, shown in Fig. 5, which arm in turn is pivoted at 33 in a suitable support 32, located in the hollow trunnion 13. As will be noted from the plan view of trunnion 13 shown in F ig. 7 the other end of arm 31 extends close to the outer end of trunnion 13 where it registers with a transverse slot 34-. provided in the trunnion wall, and the end of arm 31 is provided with a cam 35. This cam 00- o )crates with the lower end 38 of a asolene check valve 41 of the usual type cmp oyed in carlmrcters so that whenthe fuel level in the receptacle falls below a certain limit and the float with it, cam 35 rises and thereby lifts check valve which is located in valve casing 36, Fig. 1, to admit fuel. Valve casing 36 is seated in a boss 37 provided on the upper shell 1 as shown in Fig. 1 and the valve stem 38, as shown in Fig. 7, extends through an opening 39 in trunnion bearing wall 9'. This trunnion is likewise clearly indicated in the above named application and only shown in dotted lines in present Fig. 1.

The u per half 18 of the fuel receptacle is provi ed adjacent to the plane at which it joins the lower half with a rim which is of sufficient diameter to fit with its upper edge into a corresponding rim 16, provided in upper shell 1 as will be clearly seen from Fig. 2. Adjacent to this rim are provided a suitable number of fuel nozzles 47 which are suitably fastened in the receptacle, for instance, b threading as shown and which are provi ed with a small boring, which leads to the inside of the receptacle. The nozzles 47 are distributed over a certain zone adjacent to rim 45, the center of the zone being located substantially in the central vertical plane through the receptacle at right angles to the trunnion axis, on which the section through the receptacle shown in Fig. 3 is taken. As will be noted from Figs. 3 and 7 this zone extends on either side of said plane circumfercntially a suitable distance toward the trunnions and also as shown particularly in Figs. 2 and 3 to a certain height above the fuel level f-J shown in dotted lines in Fig. 3.

'In the structure 'of the fuel receptacle illustrated in the aforesaid application the nozzles 47 communicate directly with the interior of the receptacle such as is, for instance, indicated in present Fig. 3 with respect to the fuel nozzle 47. Thus when the receptacle is tilted or rotated clockwise in Fig. 3 the fuel nozzles' gradually dip below the gasolene level ff and thus are adapted to comeinto operation. In the present construction the bulk of the nozzles contained in the entire zone does not directly communicate with the interior of the receptacle but they are all threaded into a boss 48, which extends inside of the wall substantially over the entire zone of nozzles as shown in Fi 's. 3 and 5. This boss is flush with the surface of the upper half 18 of the receptacle at which it joins the lower bowl 1?, as will be also noted from these figures, andthe boss is provided with a. number of borin 's 49 (Figs. 3 and 5) which correspond with the number of nozzles which are tireaded into the boss and which extend upwardly into the boss a suf'licicnt distance to meet the lateral borings into which the nozzles are threaded. ()ne of these nozzles with its boring is shown in Fig. 3 in longitudinal vertical section. In the lower howl 17 are suitably disposed tubes 50, which are clearly illustrated in l igs. 3, -l and t), and which are suitably fastened to the inner wall of bowl 17, such as, for instance, by clamps 51. These tubes extend at the right hand ends (Fig. 3) slightly above the plan atwhich the upper and lower halves of the receptacle meet and the tubes at these ends moi eee ol'e sligl'ltly til-iyfil'iilll to fit into emzeepomt tapeietl moot of borings E9 so that when the two receptacle Lolves drawn together bolt 20 each tube will be thrust into the mom 1 of its boring 47-9 with which it in alinement aml thus conileet the nozzle communicating with this per- 5: Allan boring With the particular tube. The left mnclencls of tubes 5%) ez ztencl to the opposite side of the pivotal axis of the re ceptaele, prei" lily as indicated in Figs. 3, 4 and 6 along toe iijmer Wall of the lower bowl and upward, Where-by these tubes terminate near the rim of the lower loowl varying distances below the gosolenele'v'el f f when tlle .i'ee t, is in normal post xe nown. in 3. For instance it noted from the nozzle 4U! lo the as show. w thin a very evel when the peat-ion, shown in en ls of'tlie remeinmg tu oes note at graduated iooreasingdistances low the fuel level f--.7. However, 111 tz' n position of the receptaole'shown in Fig; o oft-lie tubes lL(%" l1ltGS below the fuel level. From Fig l will also notetl that the nozzle communicating with the tube 50 stands; thus nearest to the gesolene level of all the nozzles which the zone eontains which distance may be, for insta nce,

eutlieient for the alt ell" Wn past the nozzles when the engine is start-eel to draw fuel out of this noz le suction ancl thus enllcll the air with fuel to a suilieient extent to proluce mixture necessary to run the engina at a eel-lain soeetl "All the remaining nozzles, though the free ends of their tubes are all located below the gasolene level, are as yet elevated too-far above tze gosolene level to discharge thefuel theretlirougli by notions They Wll only 'eome successively into 7 'l as the reoeptaele tilted; clockwise (lli't wliei'elo g for instance, the nozzle e? lo-eetecl 'zdfeeent and above the lowermost nozzle previously referral to is lower d sufiieiently to eailse the fuel level to rlsetherein one; come within the proper istens-e oi the mouth of the nozzle to permil; fuel file charge by suction.

The free endol? each tubeislocated with resgieetjto the vertical position of its nozzle so that when its nozzle comes into, what shall be termed l'lereinefter operative posistill remains oelow the free eml the fuel Howevexg as 50011 as the receotaole is fill'ther rota-ted so that a certa'n nozzle wnieli has previously foeen in operative position wlleze fuel is tlieol'larged only lay sucn brought into a lHJSltlOTl Where fuel o might be sliscl argezl through its is V l and thus the 110212.

*eby, aside l 11: t 119 smell quit i 'y of fuel which might be contzunecl toe uppemnost portion 01" tree elow the fuel low which it discharge an Fuel by suction memes when the res ow s ghtl "*is end level 0* S in borizol Wlfl ieli may L 1 her come siniulimieously ii the tree 7 terminate at tl e s 1e l "rel or the L: be of one of two nozzles WlllCll are in horizontal olinemeiet such as, to]? in- .L g. which we approximately in horizontal alinement and only slightly oil'set vertically have their respective tube ends 50 at different levels as will be clearly seen from Fig, 6 By this zui'qngem nt I gain the aclvanto. that when the angle rotation of the ieoeptaole is grad telly ozoperation, whereas V into opesfetion Ten ns ooe rative aft the. l rst nozzle has ceased to operate. In t p .IQll'QLl form the relative positions oil? the nozzles and their free tube ends may be in orcler to discharge certain amount of tuel in a certain angular position of the reedothe size oi the opemngof such cent A J 1 e 1 w nozzles may oesuitznl'v moi-eased.

Thus or}- stance nozzles l and, 434' may be slightly 1- free end olu'n'e the otl e1 tube For stance the two nozzles and y. T? f lee dfaarily lent to have only two nozzles in e irafl'iou 1 any time since I lind that for the normal type of hydrocarbon engine two nqmzles operzbingtog? the-r may be pro-- ruled r i s-ail'licici ,ly hn e openings to supply the proper ainouin, 1 f :l and still per-- mit this an'iounh to be sulli'rieutly atomized by t re air rushi cg past the nozzles.

llhe advantage whichl' gain by this construction described over that descriliied in the aforementioned application Serial No. ($26,678 is that, should the receptacle be left in any tilledv position in which any of its nozzles may be in operative position and the ei'ip ine be stopped. no fuel will emanate run the nozzles since as previously described the suction of the engine is necessary to draw it therefrom, wher 1s otherwise iny structi'lrohas the same advantages which are allowed by the ceiu ttriuztion shown in the aforesaid application with aid to the gradual increin-e of f el supply with the 1: creased angle of rotation of the receptacle.

Front Figs. 3. and 5 it will be noted that there are two nozzles 4-7, which are located farthestabove the fuel level in Fig. 3 and which have a direct conin'iunication with the interior of the receptacle. These nozzles are at such height that they come into operation only when the receptacle is tilted through the inaxinnun angle which it is perrnitted to rotate, and should the receptacle be left in this position when the engine is stopped-fuel can not emanate therefrom by gravity on account of their. outer ends being still located slightly above the gasolene level. when. they are in operative position, so that also in this case the suction of the engine is necesaary to draw the fuel therefrom. Of course also these nozzles 1l'll l]l1l)0 slightly ol'l'set to each other in vertical direction so that first one and the other comes into operation.

As previously explained the lowcrn'iost nozzle which rose: tube end shown in llig. is Sllillrliil'lll to run the engine idle at low spelt; l the receptacle in the Lion shown n i 2 and 3. ilullicient is the eby (-tflillil ed it the rarbureting inambor in which the nozz s are located bro an Ultillllllgff willed between rim do of upper shell 1 and rini 4:5 of the receptacle, as shown in l ig. L, whereas these two rims meet in this position at the opposite de of he pivoial axis of the receptacle in the posi 7.2 which is shown in leig. 2. Un y a very ll amount of mixture being necessary to rn over the engine idle, the mixture valve which in this position of the receptacle is fully sea ed in the mixture outlet ".5; provided with a small V-shaped notch 52-3, which indicated in lligs. 3 and '7.

The form in which I have shown and described heretofore the means which connect the fuel nozzles with the fuel contained in the receptacle the preferred. form. It is obvious that the. manner in which. these con nections may be made is merely matter of constructive skill and may be varied considerably within the scope of: my invention. For instance, instead of using tubes 50 which. run along the inner wall of bowl 17 and are attached thereto I may provide these tubes within the wall as shown at fid inFig. 8, where they are arranged within the integral wall 17 of the lower bowl or they may be formed by a double Wall, as shown in Fig. 1.0, the two portions 55 and of which are pro vidcd with. channels of semi-circular cross section so that two of such channels of the two walls registering will form a tube 57. The two walls may be held. together in any suitable manner, for instance, by screws 58. To produce the graduated distance correspending to the free ends 50* and 50 of tubes 50, previously described, I provide a boss 0 on the inside of the lower receptacle half, shown in Figs. 8 to 10, in which. the several tubes 54. or 57 terminate at graduated distances from the fuel level. At the other end these tubes may be flush with the bowl rim and directly lead into borings 49 of the upper receptacle half.

Aside from the advantages as to perfect mixture gained by the above described. fuel discharge device I also gain the advantage of effectively separating any impurities heavier than fuel tl'ierefroln before the fuel enters the tubes. For instance, it is obvious that water which frequently forms an undesirable admixture to gasolcne will collect at the bottom. of the receptacle bowl 17 where it ca never reach the nozzle tubes.

What I claim is:

1. is a device of the character described,105 the combination with a rotatable fuel receptaele, means for maintaining the fuel there in on a predetermined level, means for discharging fuel through the wall of said receptalcle when the fuel level is brought within a prede mined distance of said means by rotating said receptacle through a predetermined angle, and means for eonnectin said discharging means with the fuel in said rc-" ceptacle and for preventing said discharging means 'flOll'l o iierating when the receptacle is rotated beyond said n'edetermined angle.

ln a device of the cl'iaraeter described, the combination with a rotatable fuel rccep- 12 taole, means for maintaining the fuel therein on av predetermined level, means for discharging fuel through the wall of said receptacle when the fuel level is brought within a plOtlOlOlllllllcd distance of said means by rotation of said receptacle through a predetermined angle, and means for connecting said discharging means with the fuel in said reoe 'itacle so long'as the receptacle: is rotated within said predetermined angle and for the fuel when one i.

erating at a certain angular position of receptacle, and each of said nozzles havin the communication of its tubular. extension will "the fuel interruplecl when the recepiielcle is rotated beyoncl said angular position.

oepta-cle, means for maintaining in,

in the Wall of seicl receptacle and normal looated'eloove the iuel level to prevent foe-l 2 of soul receptacle l1 the fuel" lhercin, lo come successively receptacle is roem 1 nozzle op- 1' pi ition of ihe id nozzles having tubular (-Zi'ullSlOfl 1 t rruprcd when lho recepi l zmgulur position. llmracler describecl, a rotatable fuel 1- ;lor maintaining the fuel re lelermine l level, and a pluclinr 'e nozzles disposed lo and normally V to prevent fuel eicl nozzles having of suirl receptacle therein,

clisoouneolingg sol yoml soicl angle,

o. lo device of 'lhe char mole, means for me a-inn. .no The in at o predetermined level, and a plure oil fiel discharge means disposed in c. wall of said, rec pmcle liming their enrls nor-null disposed above the l? and their inner ends cmmnuni u the fuel, said discharging means hen oclegtecl he come successively iolo operation when the receptacle is rolatecl from norr 'l lherein at o position, ouch means operating at iiehi y f a lllfil' pr 1611 Di he 1''" LELClE earl 11 the Willi oi szicl income having tl: oounuunio of ils inner curl \VliJll the fuel i when the reccplocle is refilled he angel-1n. posill 1-. ln 1 device of suitable prrmcution which their wspcclire w se the fuel level when normal posilion, Silli'l.

receplzzroe liar-f w -ly (lisp sod above I level and their inner ends conimunicet Wllll the fuel, sari-{l (lie-char" l. means he F1 @5118 SUSCQ Holy iuli :ulapleil to come successively into one at 0}) I receptacle 15 related when the recepijeclc rotated fr position, eoch meens ooeroting a cerr angular position of the receptacle noel of suicl means having the cormnunic? of its inner enl Wich the fuel intei L wh th cepegwl is mi ted, beyond o} or POSlelOll to pre'vene I'llllllEl' operation of angular position and each *uccessive me e lf- 18 I -1 mfg pQrafi n bgfore 1,11,; precgdr o 8. in It device olme character (lOSClll)(l,

tucle is rotated heyoncl soul angumeans goe out, of operation, {he combination Willi a rotatable fuel recep- 5. In a device of the character described, ilcle meons for mainlmnlng the fuel thereat predetermined level, and a plurality ruel discharge nozzles disposed in the wall saial receptacle and normally located ,ie toe foe el to prevent fuel .rischurgc .,.'cfilurough, nozzles having tubular Jerri-onerous insit f recepl'nclo \\'l1icl1 muoiei'lie s fuel therein, and the free encls of whlel extend to the opposite sicleef ihe pi'vocol receptacle axis from terminating at varying distances below the fuel level in suitable proportion to the discanoes at which their respective nozzles are located above the fuel level Whenthe recepmole is in normal position, said nozzles adapted lo come successively into operation when the receptacle is rolatecl from normal In a device of she char" cter ileseribeol, position, each nozzle operating at a certain the combination Wit-h a rotatable :licl 'ingulm' position of the receptacle, the free 3 e fuel Lbe end of each nozzle being elevated above therein at apredetermined level, ano a 1 relity of. fuel discharge nozzles disposed lischar e therethr ue'h seicl nozzles bovine v I L. 9 on where the nozzles are located, said free encls 1r 1 :rlhed,

tion, eaeh xioz'ale operating at a certain anguposl the receptacle, the tree tube d of taeh nozzle being ele ated above the eel level when the receptacle rotated heyoud said a n gular position. to prevent further operation of the nozzle, and each successive nozule coming inlo operetion before the preceding nozzle goes out oil? operation, said receptacle also having at suitable nurnher of nozzles located the highest of all nozzles above the fuel level, which communicate directly with the interior of the receptacle permitting discharge of fuel therethrough when the receptacle is rotated into its ex- :15 trelne angular position.

10. in a device of the character deeeribed, the combination with a rotatable fuel reeeptaeleof a plumlity means [for discharging l'iuel therefrom end meant; for gearing said discharging means progress-- i l y into and out of operation, when the mole eontinuee to rotate 1n the same di- .lLlUlL 11. In a device of the character des rilmd,

* combination with a rotatable fuel. recepol pluralit p' in ans for dischargel therefrom, said nea-ns normally nieating with the it o", and means for she :recepltrmlo rotated from normal posithrowing said l aging nieauu srs'ely into 0 ration and l e! pro llieemlneetirlgg the inn r earlsfrom l progl eirely throw the lllrwlnwf, out o o 'ieration,

when the moat charging means s l erel,

1 device of the l fllill'illlt'l lltb'h'lllitwl, the eoinh u 'on will a rotatable fuel retro "aele, me: for maintaining the fuel tlm'ein at predetermined level, and a plurality of fuel discharge means; illm weed 3n the wall olf said rec 'gaele having; lheiroutmends normally d. posed, above the fuel level and their inner enrL: eomnluuiraling with the fuel, Said rliechar ing nit-arm being adapted, to come euce .r. M a .A. l

errely and gradually into operation 1hr thereceptaeh:1erotated lrmn now ma! p: (non, each means operating al a verlam llar posallou ol' the ree-ephwle and hell o l irl'meane having, the communication of its inner end with the Fuel inter; :inp'l'ed when the receptacle is rotated lwyond said angular poeition.

13. In a rleviee of the charm-tor deel-rilaed, the combination with a rotatahle .lfuzil reuep taele, means for maintaining the tool therein at a predetermined level, and a plurality of fuel discharge nozzles disposed in the vall of Mid receptacle and normally located above the fuel level to prevent fuel discharge therethrough, said nozzles having tuhular extensions inside of said receptacle which connnuni rates with the fuel therein, said nozzles adapted to come successively and gradually into ope :ationavhen the receptacle is rotated from normal position, iaeh nozzle operating at a certain angular position (If the receptacle, and. each of said nozzles having the Q0]1]1111l1'1lC2ltl )1l of its tubular extension with the fuel interrupted when the re ceplaele rotated beyond said angular posi; tion.

Tl'llfllllkl S F. Moll lll, l-llv Witnesses: w

ll i'lllrnnu J aim-1n, M. G. Unawrorzn.

Ill)

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