US1171200A - Carbureter. - Google Patents

Description

G. Vi. HOLLEY. CARBURITER. APPLICATION FILED'JUNE r4, 1909.`

Wi@ y CARBURETYER. APP'uATloN flLED JUNE 14, 1909.

Pateutd Fab@ 8, 19M.

2 SHEETS-SHEET 2.

wruwr [75 073. Ammin ,1

g nu To all whom 'uit may' concern:

GEORGE MELvIN HOLLEY, or DE'rRoI'r, MICHIGAN.

Be it known that I, GEORGE M. HOLLEY, a citizen of the United States, residing at Detroit, in the county of Vayne, State of -Michigan, have `invented certain new and useful Improvements in lCarbureters; and I d'6 declare the following to be a full, clear, andfexa'cut description of the invention, such as4 will enable' others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and,to the figures of reference y i :'marked thereon, which form a part 0f this l specification.

This invention relatesto carbureters for internal combustion engines, and consists 1n the'` constructionanyd arrangement of parts L hereinafter 'more fullyset forth and pointed out particularly inthe claims.

The objectgof the invention is to provide simple and eflicient means for feeding into4 the carbureting chamber a plurality of hydrocarbon fuels of varying density' or specific gravity, enabling the operator to start the engine upon the ,lighter or more volatile fuel and then shift the carbureting device so as to feed the heavier fuel,'the arrangement being such-as to affordtwo independent fuel reservoirs -which may be made to communicate independently with a single fuel nozzle which extends into the carbureting chamber, and to provide for regulating the flow of fuel from said r'eservoirs at will.

The above object is attained by the structure illustrated in they accompanying drawings, in which-:#- I

f Figure 1 is a central vertical section through a carbureter involving my invention, the line of said ,section being indicated by dotted line 1-1 on Fig. 2. Fig. 2 is a top plan view of said carbureter with the cap or cover removed. Fig. 3 is an enlarged fragmentary` lview in .section through the upper endcf the fuel nozzle and the controlling valve therein, through the medium of which either of vtwo carbureting fuels horizontal vwhich the carbureter is adapted to supply,

may be fed to the carbureting chamber.

Fig. 4 is a' horizontal section as on line 4--4 of Fig. 3. tion, as on` Fig. is a central verticalv secline 5-5 of Fig.` 1.l Fig. 6 isa section as on line 6--6 of Fig. 5, he dotted'line'l in said figure showing the .l i tf.. uns..

Specification. of Lettersv Patent.

osition of the Zhandle of `the-controlling valvewhen the device isset to feed' from. oneratented Feb. s, 191e.

Application filed June 14, isos. serial No. 502,023.

of the fuel reservoirs. Fig. '7 is a view similar to Fig. 6, the dotted line indicating the position of the handle of the controlling4 valve when said valve is set to` feed from` the other of said' reservoirs. l Referring to the characters of reference, 1 designates the body of the carbureter which is preferably cylindrical in form and which is divided by a transverse partition 2 into two independent fuel reservoirs indicated at 3 and Il, respectively. Each reservoir is provided with a valve chamber 5 communicating therewith, and in each of said valve chambers is a valve seat 6 sur.-

each of the gravity valves 8 is an arm 9.

which is pivotally-mounted at 10 in the passage connecting each valve chamber with its reservoir, the inner end of each of the arms 9 being secured to a semicircular float 11 located in each of .the fuel reservoirs. The

upper end 12 ofeach yof the valves 8 is guided in a way 13 formed in the cap 14 .which covers'each of the valve chambers 5.

By this arrangement the fuelin each of the reservoirs may be maintained at a constant level, as will be well understood in the art. When the fuel in either of the reservoirs falls below apredetermined'level, the Avalve 8 will be lifted as the float descends, permitting the fuel to flow into the reservoir through the inta-ke opening 7. As the float is lifted by the inflowing fuel, the valve 8 .will be seated to cutoff a further inflow thereof. i

Extending vertically lof the body of the carbureter and located centrally therein is' a circular partition 15 which connects the transverse partitions 2 and within which is formed the carbureting chamber 16, 'the lower end of which communicates with `the air intake passage way 17 extending horizontally through the body of the carbureter.

projecting chamber 1s the fuel feed nozzle 18. In the v upper end of said nozzle'is rotatively seated the plug valve 19 whose stem 2,0 projects from the lower end of said nozzle and car- ,riesthe actuating handle 21. 'The valve 1 los is held to its seat .by packing` 22 retained in place Nby a ring 23 embracing. the stein ofsaid v'alve andurged against said packing by a coiled-spring "avhich also embracessaid valve stemand is confined in the lower .end of the nozzle by means of the `threaded plug 25 screwed therein' and through which thevalve stein passes freely. Leading from thereservoir t and communicating with the ",upper end, of the nozzle 18 1s a Jruel feed passage26 through which the flow of fuel is controlled by aneedle pointyalve 27 seated I therein. The stein of said valve projects' l y beyond the body and carries theknurled disk '20 the outer end of thestemof said valve car.- 1

QS-for actuating it. The .reservoir 3 also.

rying lthe actuating disk 3L .-Formed in the i .upper end yof the valve 19 is a= passage 32 .Whose terminals open through the wall of y i said valve at lright anglesto each other,.'as' 25 lclearly lshown in Figs; -6 and?. Communicating with the angular passage 32 in said,

. valve :is a verticaly passage33. The upper cateS.

end of -theyalvel 19 is reduced, as shown at 34, anderosslng said reduced portion is a transverse passage with which the upper end of the vertical v passage 33 communiofgsaid valve and the wallof the nozzle-at its upper end is an annular way 36,- into 35A which the opposite endspof the transfjerse 'passage 35 discharge, all of` which isclearly I fshownin Fig. 3. 4By rotating the 'valve 19 -thinugh the medium. ofy its handle,.`the terf- -minals ofl the angular passage 32 therein mayl be caused to register successively with the fuel .feed p assagesy and .29. When one' of. the: terminals ofsa'i'd angular passage inthe-valve is-made to register with one of i. the fuelffeed passages, fuel from the reser- 'nicateswill lflow into said angular passage in the valve,' thence throughv the vertioall Voir with which said feed passage commupassage 33 into the .transverse passage 35 :and 4fill the annular [spacev at the 'upper end ofthenozzle, being 1naintai-ned'therein at .the level'o'f'the fuel in the I/.SQ-rvoir with which the nozzle may be in commiuiication, whichjlevel'i's. normally slightlylbelow the upper end of said nozzle. The` fuelheld inf end of the nozzle is'drawnfintof the car-' bursting chamber bythe inspirations kof the` i `r'pafssing' therethrough to form an explosi'ye`charge`,`as will be well understood.A L

engine and. mixed with'the;

It will benoted that the feedpas'sages 26 andQQ communicate withv the nozzle'throug'h Qppositesides thereof, and thatfthe shape` ofthewangularpassage32 'in' the'- valve 1 9 Y is lsuch thatwhen one 'terminal-*of said passage is in .communication with one of the f www fuel feed passages, the other passage is closed by the wall of said valve, thereby insuring the feeding of fuel lfrom but one reservoir at a time. f

v"The `reservoirs are closed by a cover 37 secured' thereon having a centralopening therethrough from which' leads a hollow passagel is a throttle valv`e'40 adapted to be actuated through the medium of a handle or leverll on the end of the stern thereof.

It'has been found by: experiment that hy' drocarbon 'oils` offtherdensity of kerosene, can be successfullyused ininternal combustion engmes after the engine cylinder shall have become'he'ated so as to heat said oil to such-al degree as to render. it sufficiently volatileto. enable the "commingling of air therewith' tov` formI an .explosive mixture.

The chief difficulty in using kerosene and oilsof like densityl in explosive vengines is the inability of starting the engine with suoli` 'a fuel because 'of its low volatility under 'relatively low'temperatures. It has been found that kerosene and like oils can y l be used sucessfully in connection with gaso- Betweenthe reducedupperl end 3l len'e or'volatile oils, by employing the vola.-

then,`a'fter sufficient heat has been generated A to 'evaporate thel kerosene, cutting. off the Asupply of gasolene and feeding kerosene through the carbureter instead, the'presence `of heatk leXpandingthe particles of kerolsene 'to forma gasl which when mixed withi the air passing through the carbureting cha1nvber and-through the heated linduc't chamber of .the engine, `produces a. satisfactory explosive'm'ixture which may be successfully.. employed todrive vthe engine.; It will be understood that heat from the; exhaust is employed'in ay manner not shogwn, to heat the induct pipe through which the explosive mixture is conveyed from-'the darbureter to thevcylinder..

Because of the 'comparative cheapness of `kerosene-and analog-'ous hydrocarbon oils and their' vrelatively high 'heating qualities,

a material saving isvinade by using kerosene' .instead ofgasolene or'. the lighter volatile. foilsg' lt'lis important, however, that after running" upon kerosene provision be made the fuel nozzle so' that when it is desired Jto-'start `thejengine' upon gasolene, it will "for Vleaving'but va `small quantity thereof in due -aniou'nt of kerosene before the gasolene cany br l'brought .into use'. lTo Aaccomplish liso extreme'upper end of the fuel nozzle and that the residuary fuel which can be left therein after an operation is only the cornamount is insufficient to materially interfere withthe starting of the engine.

` In orde!` to 'render' practicable the opera- ,tionlof the engine upon two fuels of varying speclicgravity, 1t is necessary to provide for the' convenien'tsupply of said fuels to 4a .single ynozzle inthe carbureter so as to' enable'oneto be turned off and the other turned on at will. Such provision I have made byfeeding said fuels intothe carbu- A reter through a single valve, and forming said valve so that When it is actuated to .permit the flow of one fuel into the feed nozzle, the flow of the other fuel into said nozzle will be -automatically cut oii.

Having thus fully set forth my invention, what I claim as new anddesire to secure by Letters Patent, is:- A

l. In a carbureter, the combination of a casing having a plurality of independent reservoirs, a mixing chamber Within the casing, a nozzle extending Within the mixing chamber, a plurality of independent conduits leading respectively fromsai'd reservoirs to4 adjacent the upper end of said nozzle, and a valve Within the nozzle having a ported portion controlling said conduits and provided with an annular dischargel opening. i

2. In a carbureter the combina/clon of a casing having a plurality of independent reservoirs, a mixing chamber Within 'the casing, a nozzle extending Within the mixing chamber, a plurality of independent conduits leading respectively from said reservoir to 'adjacent the upper end` of said nozzle, a valve Within said nozzle providefd with a ported portion controlling sa-id conduits, l a vertical 'passage communicating with the ported portion and, having a trans verse passage communicating with said vertical passage, there being an annual discharge opening with which saidy transverse passage communicates.' i In testimony whereof, I sign this specification in the presence of two Witnesses.

GEORGE MELVIN HOLLEY. Witnesses:

E. S. VHEELER', L Gr. HoWLnT'r.

Images