US1321471A - Cabburetsb - Google Patents

Description

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i PATENT ermee.

'ERE EEiZTEST EHLLIPS. F ,NEWRK, NET JERSEY, ASSIGNCPE, 1:BY MESLQ'E ffl- MENTS. TO GTT@ BERNE, DE NEWARK, NEW JERSEY CARBUR'ETER.

'Applcatonled December 15, 1915.

:i less ifolume ol' nir to draw in nur vaporizee snmll ihnintity of gasolene when desired; to permit regulation of the mixture time ol)- tnined; lo allow the eerbureter to supply the mixture to sin engine es usuel for high speeds; lo secure simplicity ot' construction und operation, and to obtain other adventnges und results ns nm); he brought out in the following description.

Referring to the :weoinpnnying drawings. in Whirh like numerals ot reference indiyente the suine parte throughout the several Views.

Figure i. is zi longitudinal eeotion through :i rnrlnireter embodying my invention es upon linel A- of Fig. 3.

Fie". 2 is n siniilfir sertionel View showzxin movable pai its in shifted posi- 40 1 and showing :i modified Construct-ion, and

Fig. l is n transverse section on line C-C thereof.

In the spe. en'iliodiment of the invention illustrated in snid drawings. the reference numeral 1 indiceies the usual eylinn drivel Casing providing en interior finer chamber or reservoir 2 into which gnsolene may hek admitted through a Heuty valve 3 is nommen' in carbureisers. At one side Specicaton of Letters Patent.

Patented Nov. mi, 191%.

Serial No. 65,888.y

ofl the' cylindrical easing l and tainverse thereto is a tubular member L providing' e passage 5 for the air to enter and in the middle of this passage near 1the end inhereo'f toward the engine e. rali/ed nozzle G for Controllinq the admiseioirof Qusolene thereto from the lient chamber or reservoir 2. In the drawings the valve is shown es :L needle 'failve with :i threaded stem 7 Withfin :i sleeve F5 screw-threaded interior@T and exteriorly and providingr its inner end a squared or angular portion E) nonrot/atellfiT receiving a, throttle valve l0 upon itself. The sleeve 8 is threaded. transversely inte the tubular member, preferably pai-:diei to the cylindrical easing' l? und is provided with ineens l et its outer end hir turning the saine whereby the throttle vulve l() :may he turned to controi the supply et mixed vfuel and :iiit-o the engine. pposit-e the inner or pointed end ol: the needle valve end?,4 in axial alineinent therewith is n nozzle' proper 1 2 projecting intoiihe pnssegre 5 and 'i for thermore provides ineens to Comet with the squared end ot the sleeve for supporting' the throttle vulve. ln the (lm-wiege, the throttle vulve is shown as Comprising e. pair ot' sheet metal disks 14. 14 held lizitvii l to- `sfethrr and having dininetrienlly of .themselves at their facing: sides lined channels 15. preferfrhly stmnped in the sheet. metzii und so prliportioned es to rotatably receive ai; one end the squared portion o nozzle proper 12. The channel 15' of the disk :un the side ot' the 'vulve :rway from elle engine (when the ive eiosed) is eut away for its middle portion te mi iti so es eo expose 'the Jfuel nozzle, :is slum/n. in the drawings, `die other channel eind disk being! 'iniperforzite so that the vizir/e Wiil @lose the passage .5 between the fuel nozzle und the engine, when turned transverse to said passage. 'Y

ted end (it the e sleeve 8 and rotatably receive :it the other end the l me f i It Will be noted, that in this construction as so far described, when the throttle v alve is nearly closed or stands substantially across the passage the flow ol' air is adjacent the Wall of the passage so the hole 13 from Which the gasolene flows is not 1n the 4path thereof. Therefore uncertainty exists .as to how much gasolene, it' any, will be carried in with the air, and considerable in excess of that actually required "forI the p roper mixture has to be admitted into the A air passage to be sure of atleast enough ti0n. To obtain such supply, l. provide a bypass lthe inlet end of which is close tothe fuel nozzle outlet so a current of air entering CII the same will draw in a proper proportion of gasolene, andnot require any excess flow.

n carr ing out this feature of my invention a col ar 17 is formed integral-l y with the casing l and tubular member l, said collar being perpendicular' to said member and at 'the side' of and transverse to the casing. This collar is interiorly screw-threaded foi" receiving the threaded end 18 of an adjust- Aable by-pass member 19. a restricted' openingl 2() isprovided through the wall of the tubular 'member l in axial alinement with the collar, and through this opening extends a neck 21 into the air passage toward thecenter ot' the same. This neck is a part of the adjustable by-pass nieniberand -is in axial alinement with the threaded end thereof whereby as the threaded end Vis screwed in or. out the neck will` turn j. Within the restricted opening 2O andmove in or `)ut also. Furthermore, the parts are so related that the free end oi the neck 2l ymay be brought close to the hole 13 througl'i which the gasolene is admitted to the air passage, and upon the side of the throttle valve away 'from the engine, or side which has the portion 1G cut away, i It will he noted that the noch projects inward from lthe wall of the passage toward which the fue] inlet faces'as the throttle opens, and

`prelhrably the neck 21 is parallel and contiguous to the throttle when closed, as shown in Figc l, so that it serves as a stop for said throttle in closing;`

he neck 2l is longitudinally hollow, as at 22, and lat the `end of the passage thus formed Vis a transverse ho-le23 in ope-n coIn-, :munication with the interior' iol the collar,

Opening through the, Wall of the tubular' inen'iber 4 into the interior of the collar l17 is a second or outlet hole 24 at the side of the neck toward the engine and spaced. i'ar enough therefrom so Athat as the throttle valve is brought into closed or perpendicu- .lar posltion to the tubular member the-neck of the by-pass will be on one side thereof and the outlet hole 2l willA open upon the iene will be drawn in also. \Vith the throttle valve open somewhat, as in F1g. 4, so the outlet hole 24- is on lthe saine side thereof 4with the neck, a suction through the bypass is still effected, in that the rush of air hby the hole 24 will draw air therefrom'also and gasolne will therefore be drawn in. Obviously as the throttle valve is opened more 4and more, less air will be drawn through the by-pass, and with the throttlevalve well open, the gasolene is carried directly in by the air iu the passage at which p time the by-pass need not operate.

AIn order to obtain the proper proportion ofigasolene being carried through the byfarther from the fuel nozzle outlet which may be readily done by screwing the by-pass member 19 in or out, and a set screw shown threaded transversely through the justed position. Furthermore, it ma be than the threaded portion of thet Vity-pass gnexnber, a chamber is provided which will allow the passage of the u1! yand gasolene from the transverse hole 23 `of the member to the outlet 24, andpreferably a shoulder 26 is provided ,at the end of the stem next the threaded portion for preventing the threaded portion from being screwed entirely to the inner endot' the collar, and thus a. clear passage may always'be had fronfthe stem to the outlet. As free a supply of gasolene to the fuel nozzle is obtained as possible, and for this purpose, the longitudinal hole 13 provides the necessary restricted outlet toward the needle, but enlarged therebelow and-opens into an auxiliary reservoir 27 to lwhich gasolene is su-pplied from the float chamber. By this means an adequate supply of gasolene is. maintained very close to the needle valve so that the supply is positive-and etlicien't upon all occasions.

Referring to Figs. V(l and 7 a modied con-l noted'that with the neck smaller in, diameterpass, the neck has to lie-adjusted closer to or I collar for clamping the member 19 in adstruction of by-pass is shown in which some of the advantages of the preferred construction as above described may be secured. A

4o While I Coller Z8 provided at the side of the casing t and perpendicular to the tubular member 1 a5 in the preferred construction. ["roin the bottom of the collar through' the wall of 4 the tubular member open two holes 29, 3()

one of which, as 2U, toward the air inlet end af the member islarger than the other.

TM5; holes are separatixl longitudinally of L Said iiieinber and the throttle valve l when .111 dweil is arranged to stand betwi-.ei the holes. 'llius a suction created by the engine Causes air to enter the larger hole 2S) on the if inlet side ofthe throttle valve and escape inte the passare on the side of the throttle g valre'toward t ie engine through the smaller hole 30. This flow of air .will obviously curry with it gasolene from the fuel nozzle,

it beifig noted: that the outer end of the collar is closed: by a-threaded plug 3l, and

that a fixed tube 37 leads .from the larger hole 29 to a Apoint near the giisolene inlet of the throttle valve.

In order te regulate the proportion of'air and gasolene in the -iiiixture allowed to enter,'1 have provideda needle valve 32 in the collar' and `shown as transverse thereto.

"`his needle valve provides a threadml'stinn 2li. which is threaded into one side ofthe millar and terminates at its inner end in a 30 point ifi adapted to close or iartially close a lioe in the opposite si e'wall .ofthe collar. A set screw 3G in the wall of the collar transverse t1 thestem 85 tion. The hole 35 lis for admitting air and by regulating the quantity admitted tierethi'ough, the quantity iuhiiitted through the hole 29 will be varied and consequently more or less giisok-,ne may be drawnin es desired.

have referred to gasolene throughout. the specification, in invention can be ein iloyed with un fll commonly used iii car iin-eters to whic i it may be found `adapted, and obviously various detail moditieiuions and changes may be made in the hiaiiiil'aetiire ol' my im iroved carburcter without departing fiom t ie spirit and seo )c of the invention. so that I do not wish to understood :is limiting myself exce it as rc' quired by (he following claims when con'- strued in the light ofthe rior art.

llaving :thus deseribei the invention, whatl claim is,

1. ln a r( arbureter, the wmbination with a suction passage, and a throttle arranged to open and close seid paesage to the nori'nal flow of fuel, of a fuel inlet substantially'at rovides a. means of holding the stem in adiusted vposia suction passage aiul a throttle for said passa re having a fuel inlet at the middle of one si( e of itself,- of a.neck projecting into the suction )assage parallel and contiguous to the sai( throttle when closed, said neck forming a stop for the throttle when closed and providing n passage leading to a. point ofthe suction iassage iii front of the throttle when close( 3. In ajxirliurcter, the combination of a casing providing a suction passage and a chaiiibei' in the side wall thereof, a fuel nozzle in said passage, a throttle adapted to open and close said passage to the normal -low of fuel, and ii threaded iiiei'nbeil iulapted to screw in and out-nt one side of the passage aiid 'having a neck extending from. said chamber intothe suction passage adjiureiit 't'lie nozzle, whereby screwnig Vsaid nieinbeil in or out will position the neck eloserto or farther awa from said nozzle for obtaining gr'ciiter or ess flow of gasolene intxi'said chaudier, said. chamber having an outlet into thesuction passage upon the opposite side of the throttle when closed from said neck. 4. I n a. carburetor, the combination of a raising providing an air passage', a fuel nozzle dis'lxisixl transversely across Said air iassage, a throttle vulve iotatably mounte on said nozzle and adapted to open and close said passage to the normal flow of air and giwilene, a by-pass winprising a threaded member adapted to screw in and out at one .side of the casing and having'a reduced shoulder at the inner end of said threaded portion whereby a chamber is provided around sind shoulder, and a neck extending axiall ',froin said threaded portion and.

shouh er ntesaid. wir'ipassage iuljarent the nozzle wherebyl screwing said member in or out will position the neck closer to or farther away from said nozzie for obtaining greateror less flow of .gasolciie into said chamber, chamber having an outlet. into said air [nissage upon the opposite side ol" the 4throttle',"valve when closed from the neck,

, GEORGE ERNEST PHILLIPS.

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