US1190573A - Carbureter. - Google Patents

Description

C. L. NEDOMA. CARBURETER.

APPLICATION HLID JUNE 26.6955, A 1,190,573. mmm .my u, 1911,.

3 SHEETS-SHEE i' i,

C. L. NEDUMA.

CARBURETER.

APPLICATION mso lum 26, 19|5.

1 1 90,57 3 Patented July u, 1910 3 SHEETS--SHEET 2.

f//ar/e LA Nada/77a,

"1X" oo @muy C. L. NEDOMA. CARBURETER.

APPucATloN flLEu1uNEz6,1915.

Patented July 11, 1916.

3 SHEETS-SHEET 3.

NS ki CHARLES L. NiazDoMA',A or

UNITED 'STATES PATENT OFFICE.

T0 all w'lwm'it 'may c ocerf'n."

ABe it known thatI, CHARLESV L NEDCMA, a subject olf-the Emperor'o'f Austria-Hungary, residing at Detroit, inthe countyof Wayne and Stategof lllichigan7 have invented a, new and usefull Carbureter, of Whichthe following is a specification.

Y The present invention'consists' vin a 'carhureter, among the important features` 0f whichjare the following: a series of fuel ori-l fices located in the wallof the mixing chamber\,7together with amovable tubular fuel valve for vopening and .closing the orifices; means for simultaneously imparting mo ve-".

ment to the. tubular valveand to the throttle valve means w'herebythemovement' of the tubular' valve, in! respect to regulating` thesupply of fuel, isxrendered effectivein accordance-with the demands' of theengine at differentv stages of throttle opening; cam means for regulating the @movement of the tubular valve; and a throttle' valve, including asecondary air valve, whereby air alone mayhega-dmitted tothe engine for braking and cooling purposes.

. The invention also consists fin the details of construction shown7 described and particularlypointed out in the'subjoined claims.'

' ln the drawings, Figure 1 is a side elevation. parts being broken away, showing one embodimentof my invention. Fig. 2 .is a section on theline 2 2 of Fig. 1, the cam mechanism appearing in elevation and the throttle being .(as in Fig. 1) in position to admitair only for braking or cooling pur- )oses "Fi". 3 is an enlarf'ed fragmentary h C? C `section of the cam and cam carrier.

`same lfuel vul ve.

Fig. 4 is a vert-ical section through a modification. Fig. 5 is' a plan view of the jet-plate. Fig. is'a plan view of the fuelvalve shown in Fig. il. Fig. 7 is'a fragmentary vertical section thvou'gh'the lower portion of t e Fig. 9 is a vertical section through a1 second modification. Fig. 9 isa vertical section through athird modification. Fig. l() is a fragmentary sectiou'on .um un@ mein f Fig.

Similar reference characters refer to like parts throughout thc several views.

lu thc cmlmdimcnt of in v invention shown iu Figs l. "l and 2'. l indicates an ordinary u CARBURETER.

' 1 Specification of etters a nt.

Application fuga :une 2s, V1915. 'seriivna 36,465.v

DETROIT, MICHIGAN, AssICNoR Vor ONE-HALF To FRANK M. HAWLEY, oF DETROIT, MICHIGAN.

Patented July 1I, 1916.

float chamber, the supply .of fuelffor which i adjacent the face 6' the wall is threaded vto receive the ring 10 by .Which'the' annular jet plate 11 (Fig. 5), preferably'offthin copper, fis clamped in position. The-jet plate is provided in its inner edge-with a v"series of spacednotches 12, that :maybev lV-sh'aped A and have their pointed ends'-iinconum'inicaV tion with'the -duct '8 Vwhilefthirjopposite ends open into the 'carbureting chamber..

As shown, the' rin-g1() andcagsing' areciitj--.iv

to form a truste-conical valveseat'l- Bv above:

which the inner suifa'ceoff'tl1eg.ca'rb\1reting f, chamber is shaped to receiveflie.body"poii5 tion 14 of an axially` rotatable tilbularfuel :I valve, the upper edge ofwhichmay engage the shoulder 15. From the loweredge of.v Y

the body portion, the valve -fiare`s outwardly to form a lower-end I6 having notches IBL corresponding in numberv and angular spacing to the notches v12. in'the'jetf'platle. 'The wall of the mixing chamber is provided withv` the circumferential slot 20,:(F ig`.41)`, through l 3.5AV

which a pin 21, Arigid'vwith the fuel valve, projects, anda spring 22,'aIi-chored at23'.

tends to force the pin to the 'right end o f-A i 'I theslot., in which positionthe fuelforifices are closed by the valve. i. Y t f Mounted in ears 25 (but one of which ,is shown) onthe`casin 1r 3 isfa Vtransversely ex-,ij tending throttle sha tr26 to which ijs-secured n arm 28 mangas endowed t 29 for-.afg

purpose hereinafter indicated, and this arl-lu'v may haveformed integral therewith van acf tuating lever 30. The ls h'aft ZGalso' has-sev cured thereto at Aafpoint-in alinement witli'j the ax-isof the carluireting` chamber, a' throt. tlc arm 33 (Fig. 2), preferably a duplicate i of the arm 28, that projects into the cham-' l0(- ber through a'narrow slot in VVan obvious ina-nner. The arm 33 receives a crossfpin yas 34 upon which a-.throttle rod is susi pended, said rod having its lower end guided-in a boss 36 on a laterally openingl intake member 38 secured to the casing 3 in any desired manner. Upon the throttle rod is rigidly secured a substantially conical member or pure airvalve e0 having its lower edge 4l conforming to a seat l2 onanother f member with respect to whichthe rod is capable of relative movement and the last mentioned member is normally' held in cngagement with the member 40 by a compression spring 43, one Yend of which abuts a collar 44 on thev rod. rlhe member with respect to which the rod ismovable is made up of the cross wall /tand an upwardly taperingl conical lportion 48 with which Ythe cross Wall' merges, and isrperforated at 49 from which it'wllbe seen that the space between the cross wall and the member lt() is constantlyv in communication with the atmosphere. The members Il() and e15-48 to-v gether constitute a throttle valve; and, when the parts are in the position indicated in Fig. 2, air is admitted to the mixing chamber'through the perforations 49 without any flow of fuel from the notches 12. e

The ineans for rrotating the fuel valve aboutthe axis of the mixing chamber will 'now bedescribed-Suspended from a pin 5() that passes through the slot 29 in the arm 28 is a cam carrier support 5l having its lower endslottedv at 52 to inclose a headed screw 58' that projects from the casing, and

having its upper end :S4/guided in a per-orated lug 5,5 on the casing. The' support 5l i "includes two guides 56 and ar connecting plate 58 which mayv be detachably secured thereto byscreWs 59; and slidable in' the guides isa cam carrier GO that may be adjusted towardfand from the pin Ql'by means ofthe screw 61,threaded in the yoke 62, the .ends of which pass through the plate 58 and the cam carrier 60 and are riveted on the opposite side of the latter. Screws 64, that maybe accessible with a driver through the holesl in the plate 58, or which may have heads G6, extend through Vthe cam carrierandarerigidly secured to a 'flexible cam"67, preferably formed of il;;,S'trip of thin metal,l that'engages the pin 21 on the fuel val've.""Sincje` the screws may be .inde- 'pendetlyadjusted, it follows that the cam Y may be. given any desired contour.

When'the throttle is closed, the memberl i5-'A8' fits into the flaring lower `end of the fuel valve and the member-40 is held in en! gagement.- therewith by the spring 43. At `this ltirneVtlie notches 18 are maintained out of alinement with the notches liby the action of" the spring consequently', neither fuel norairis xifdmitted to the mixing chamber.A The throttle being opened and the camr ibeing 'properly adjusted, for ein ample, as shown inv Fig.' 3, the simultaneous Licorne vertical movement of the cam carrier support causes the pin 2l and fuel valve lo turn about a vertical axis,\\"i1ereby the` higher speeds to that consistent with econonly, a wide range of adjustment beingr provided for.V The curvature necessary to cause the required relative opening of the fuel orifices throughout t. e 1 various stages of speed having been imparted to the cam 67 by the screwsil, the screw 61 affords means whereby the cam may be moved 'bodily toward or from the pin 21t0 vary the amount of fuel delivered without disturbing the rate in which 1t is-fed at one ,time with respect to the rate of delivery ,at-ahylother period.

This, therefore, cons: .tutes a convenientmeans for securing a quantitative fuel Aadjustment suitable to conditions of weather or altitude. nd not only is a proper supply of 'fuel secured asconeerns quantity, but the fuel is applied to a thin sheet of air in such Imanner in all instances as to allow a2 maximum atomizing action to take place.

The engine may. be'used asa brake on motor vehicles while coasting or may be cooled by simply thrustingthe throttle lever (from initial or closed position) in a direcv tion opposite to that in which it is moved Vfor opening purposes,-whereupon the vsec 'ondary valve 40 assumes the relation to the member 15e-48indicated infFig. 2, and air only is admitted to the mixing chamber.

The embodiment shown in Fig. Lldill'ers from that previously described mainly in the arrangement of the float chamber and in the reversal. of the throttle and fuel valves,

with consequent reversal in the VIlow of all;

The fuel reserwr'firv 70 in this instance. is formed integrally with and surrounds the lcarlnireting chamber casing' 71, and the annular float 72 controls the lever of liquid.

The upper endlof thevcasinv' isfaeed at 73 and provided with the annular fuel duct 74x to which liquid passes through the passage 75, Threaded on theupper end of the casf ing Z1 is the intake member 76, to which air is admitted. through' a pipe 7 8 that may lead` to any desired source of warm air as, ,for example, a point adjacent the exhaust manifold. A plate ll clamped bet-Ween the face 73 and the member 76 performs the same function as the plate 11 .shown inFigl,

The casing 'z'l and 'the member 76 are' shaped to form a ralreseat T8 upon which rests the tapering lower end 79 of a fuel valve3 the tubular body portion 8l of which is provided with slots 82 for the admission of air from an annular passage 83 in the membei Q5; while a throttle valve, consisting of the members 85 and 30 that coi-respond in operation and differ but slightly m structure, respectively, from the members 40, 45-4, controls the flow of air. The throttle rod S8, guided in a spider 89 on the member 71 and in the plug 00 threaded into the upper end of the intake member, is surrounded by a spring 92 that tends to hold the throttle valve upon its seat. As shown,

the upper end of the rod has secured there to a grooved collar 91 into which is received the yoked end 02 of an arm 93 rigid with the throttle shaft 94.

VIt will be understood that a movement of the throttle shaft for the purpose of opening or closing the throttle valve imparts a simultaneous movement to the fuel valve, and for this purpose a cam and cam actuating means such as shown in Figs. 1 and 2 is provided (not shown, since these elements are on the side of the carbureter between the eye and the section plane 'in Fig. 4). The operation of the device is substantially the same as that of the form previously described. f

The modifications illustrated in Figs. 3 and 9 `differ from that shown in Fig. 4 primarily in that the fuel valve moves vertically rather than angularly.

Referring to Fig. 8, the mixing chamber casing 100 has its lower end of increased diametef to receive the ductA plate 101 (in ahich is formed the annular fuel duct 102 which receives its vfuel through the passage 103 from any suitable source), the jet plate 11, the annular clamping plate 104 and the threaded intake member 105. The latter is shaped to form a valve seat 100, and has a valve guide 103 threaded into its'lower end, through which the rod 109 carrying the tapering valve 110 isvertically slidable. Upon its lower end the rod rests upon an arm 112 secured to a connecting rod 113 that passes through a lug 114 on the casing 100 and has its upper end offset at 113 to aline with a throttle lever 114 to which it is connected by the pinand-slot 115'. The throttle lever is pivotally supported on the casing at 11G and has a lug or short arlu 11S that engages with one end of a lever 119 pivoted to the casing at 121): the opposite end of the lever 110 supportsv the tubular 'fuel valve 120 and imparls movement thereto through the pin 121 'and slot 122, the fuel valve being normally held in position to close the fuel orifices by a spring 123 secured to the pill 121 and anchored to the casing at 124. As the throttle lever is thrown countcrclockwise to depress the throttle valve, the pin 121 and valve 120 are elevated to open the fuel orifices; and in order to secure a progressive increase in the total free fuel opening. the lower edge of the valve 120 is provided with a series of notches leadinr inwardly through the wall thereof 124 (one for each notch 12 in the orifice plate) of diH'erent depths whereby the fuel orifices are opened one after another. By properly locating the notches, the range of mixtures may be varied to suit the demands of the engine under a wide range of conditions.

In Fig. 9, as in Fig. 4, the direction of flow of air is downward and the fuel reservoir 125 is formed with and surrounds the mixing chamber casing 126. The latter is, however, extended downward and laterally at 128 and provided with an ordinary butterfiy valve 129, the shaft 130 of which is secured to the operating lever 131. Slidablc vertically in the intake member 132 is a tubular valve 133, the counterpart of valve 120, from which a pin 134 projects through a slot 135 and a link 136 that is pivoted at 137 to the lever 131. A spring 138 attached to the pin 134 and anchored to the casing at 139 tends to hold the valve 133 in the position shown. The fuel passage 14-0, annular duct 141, jet-plate 142 and clamping plate 143 are the same as previously described; and the operation of the foregoing elements is substantially the Same as that of the modification shown in Fig. 8, except as concerns the reverse fiow of the air. Threaded into the end of the intake member is a spider 143 that, together with the threaded spider 144 on the casing 120, constitutes a guide for the air current controlling cone 145, adjustment of which is secured by manipulating the finger piece 140 in an obvious manner.

It is clear that many changes may he made in the details of construction without departing from the spirit of my invention; for example, the notches or passages for the fuel from the annular duct to the mixing chamber may be cut either in the wall of the mixing chamber casing or in the wall of the intake chamber. I do not, therefore, wish to be limited otherwise than as indicated by the subjoined claims.

I elaimz- 1. A carbureter comprising in combina tion a tubular casing forming an air passage, said casing including a fuel passage 7 a tubular fuel valve conforming to a portion of the wall of the air passage, a throttlel valve for controlling the flow of air through the air passage, and means for simultaneously operating the fuel valvc and the air valve. said fuel valve being movahlc in one direction in respect to the casing and said throttle valve being movable in another direction.

2. .f\ carburetcr com|')rising in combination a tubular casing forming an air passage, said casing including a fuel passagileading inwardly through the wall thcrcof. a tubular fuel valve conforming to a poi-lion of the wall of the air passage, and a throttle of air only, or to allow the flow of both air and fuel, resilient means tending to hold the members in the first named relation, means for applying force to the throttle rod to cause the members to assume either of the last named relations at will, anil means for connecting the foree-applyimy means to the fuel valve whereby when the throttle alve is in the position to allow the tlow of both fuel and aii', the fuel valve is in position also to allow the flow of fuel.

11. A carbureter comprising in combination a tubular easing forming an air passage, said easing including a series of fuel passages leading inwardly through the wall thereof, a tubular` fuel valve conforming to the wall of the air passage, said valve having a frusto-eonieal end arranged to control the flow of fuel, a throttle rod mo vable longitudinally of the air passage., a throttle valve earried by the rod, said valve ineluding two members one fixed to the rod and one movable in respect thereto, one of the members including a valve seat and the other constituting a pure air valve adapted to engage the seat, resilient means for normally holding the seeondary valve in engagement with the seat, means for moving the rod with the throttle valve members ir ne direetion away from the friisto-conical end of the throttle valve and for simultaneously moving the fuel valve to open the fuel passages, whereby both fuel and air are aivinitted to the air passage, said means also being adapted to move the secondary valve in the opposite direction away from they fru-sto-conieal end of thel fuel valve, wherebv air only is admitted to the air passage.

12. carbureter comprising in combination a tubular casing forming an air passage. a throttle valve'. for the air passage, a fuel jet leading to the air passage. a tubular valve t'onforming to the wall of the air passage for regulating the tlow of fuel from the jet. means for simultaneously moving the throttle valve and the fuel valve to admit air and fuel to the air passage, c am means for controlling the movement of one of the valves with referente to the other.

3. carbiireter comprising in combination a tubular casing forming an air passage. a throttle valve for the air passage, a fuel jet leading to the air passage. a tubulai' valve conforming to the wall of the air passage for regulating the flow of fuel from the jet, means for .simultaneously moving the throttle valve and the fuel valve to admit air and fuel to the air passage. cam means for controlling the movement ol' one ot' the valves with reference to the other, said cam means being adjustable to cause a :titl'erent ratio of movement of the val\es at one stage of operation than at another.

lvl. A carbureter comprising iii coml tion a tubular easing forming an air passage, a throttle valve for the air passage, a y'iie'l jet leading to the air passage, a tubular valve co'nforming to the wall of the air pas- `sage for regulating the flow of fuel from the jet, means for simultaneously moving the throttle valve and the fuel valve to admit air and fuel to the air passage, cam means for controlling the movement of one of the valves with referenee to tbe other, said cam mians being adjustable to cause a different ratio of movement of the valves at one stage of operation than at another, and additional means for adjusting the cam means without disturbing the first mentioned adjustment whereby the rithness of the fuel mixture may be varied to correspond to weather or altitude.

15. A earbureter comprising in combination a tubular casing forming an air passage. a throttle 'alve for the, air passage,'a fuel jet leading to the` air passage, a hollow cylindrical fuel valve conforming to theI wall of the air passage, means for moving the throttle valve to admit air to the air passage and for simultaneously turning the cylindrical fuel valve about its own axis to admit fuel, said last mentioned means in cluding a eain for regulating the rate of movement of the fuel valve with reference to the rate of movement of the throttle valve.

lt. A\ cai'buretei' comprising in eombination a tubular casing foi-ming an air passage,

a throttle valve for the air passage, a fuel jet leading to the air passage, a hollow cylindrieal fuel valve conforming to the wall of the air passage` means for moving the throtv tle valve to admit air to the air passage and for simultaneously turning the eylii'idrioal fuel valve about its own axis to admit fuel,

rsaid last mentioned means including a cam for regulating the rate of movement of the fuel valve with reference to the rate of movement of the throttle valve. and means fo' adjusting the cam to vary the ratio of the movements of the valves at different stages of throttle valve opening.

17. A earbureter comprising in eombination a tubular casing forming an air passage. a throttle valve for the air passage, a fuel jet leading to the air passage, a hollow cylindrical fuel valve conforming to the wall ol' the air passage. means for moving thc throttle valve to admit air to the air passage and for simultaneously turning the oylindrical fuel valve about its own axis to admit fuel, said last mentioned means ineluding a cam l'or regulating the rate of movenient of the fuel valve with reference to the rate of movement of the throttle valve., means for adjusting the cam to vary the ratio of the movements ot' the valves-at ditferng uw? siiuultmmuiely nu a Jug liao wille v; :imi liu: fue? mln; mim unfair im weuliiimg' film 'uiu nl@ ilu) n'ii enel; other :it uiimniug. inl uli in# i'ln um iun- V nieiiiuu richness; ui' lin furl mulini' iu vurrespi'uul 2u 1'. mi" lll. i'zinlmiifiiw forming :in :iir ml purliun. nui-ine. wege that lumi: tif iin" vulve fui' muilruiux' l; i ilu! :iii guuxuigjv. u liz-i tlm supply ui' fuel. une ilu: virile; iumulile luiwiiiuinzilly (v iin wir uml the mln". .uixilfiiie fixizillv ii. ilu 'Vliiuli will pmfiuu iliffiefii. :ur-uw :ilile lunpiiulliiwilju in regu' migre, for siinul:inrnnwly ment in ilu member nuffairlc l1: ing.. :i pin secured in *I iii-viering? lluug'l silinl :nimm lend K une enel mi' ilu 'n v l'lw lusl-fne :able inemlwr suifl Guin efieuilii casing, und 1in-.uw i of ihre @am 2f?. A ifziilnrelr' mmap-; forming" im r panini@ infiuili mi portion. .usesuiu im iifni sagetlui lewin *Liu le vulve fur through the ai," cuni'ulling lre supply ol' imei, une vulves lining Hinwil/.ile liu uinpzissuge unr lue mlm' in repect tu iilie igviiulliiew nnfii'le, inmuliif iungilui t() llu uil' p* 6. im" parting" nnn'.^nnu iu iin, vu including :x nn-Fiumi' muvnliie i 'f milj' of the, vii-sing. u pin Secured tu the ruuieile vulve and prujeeing tlirfuipjli zi :Jini in lie easing. resilient menu leuiliw tu urge iii@ pin toward one cnil uiv lle slut. :z flexible Cain supported liy the last nientiuiieil lungi u'flinfflly mumble i'ueinber unil..mnliufiing wii llie piu7 :laid emu extending longitudinally uf the-@velug and u Series of screws for marryingr 'the 10mi-,ur (nl the cam.

resi w fill 'L' allie munter winprisiig: u Casing g ge inrlu. ing :i Cylinauwnf, luy lurnnng :i fuel ilu; un' passage. :i

ruik

. :i fuel valve fur nl fuel., une of the d uugjiliuliunlly of the millar ruutulllc :iXlully .irivul pnrtiun tliereof, a i'uilinullxf in respect t0 fur sinuiltunwusly imparti iu ille when. mill means inu-.ifsnleif nur'mlile longitudinally 0f 'wguwwi tu the rotatable xi :im prugi'eiiniaj ilu'uugli u slot in the :il nun-ine lending to urge the l une ruil ui liu;- slut. i mun carrier Y f liil im? mentioned longitudie l ir-niiwr. wild mnu carrier beriinavmwely of the casing, .fun-.ing the cum Currier transli'uf img. zi flexible cum supeuri-ier. :unl means for wurfuur nl' ille (fain.

urrifsr minimising a Casing .5,f.i.-;;-n1ig;e including a cyliniun. nii-ins iur forming a fuel tu ille nir passage. a f`-fwrirulling the flow of puswige. :i fuel vulve for supply nl fuel, one of the uim'zilflv longitudinally of the vuil ilu) utlnr rotatable axially n ne frylinili'imil portion thereof, .1w-millieluugituilinully in respect t0 l* gainsuzigje. fur ein'ulltuneously impartmmeiuenl iu the vulves. :said means inj er. nuiulmr umvzilile longitudinally ul' ille raming. :i pin .secured tu the rotatable 'z *wir :nul uruiwgting through a slot in the ig. resiueul, menus lending to urge the pin @wird une @nfl oi' the slot. n cam carrier purified liv llie lessi mentioned longitudinally minable nieuiin-r. said vani Carrier be :num-urla Lrunm'ereeiy of the casing, a

fur unriug the Cain carrier transu the mining. :i iexible cam, and a serieu au? .sl-,reus :supported by the cam carrier 'u.' varying' lie runmu uf the cam.

if. euriuieer euniprieing in combinaiuu :i tniuim @mug ilu'niing an air passage, l easing; ifnfliiriling u serien of spaced fuel piiseziges leading inwardly thruugh the Wall rinfreof. nenne fur supplying fuel to the immuun. n 'ulvulnr fuel valvev conforming zu ilu welll if the :ur passage, means for mining; the rel vulve. Suid fuel ,valve hay; ing :i series in Yfuel passages corresponding iu the 'l'uel passages in -tlnl casing, the arrfing'exneizf being such that the fuel passages filip in the fuel valve ure. progressively broughtmilling illu flow of '.iizry sage, sa id casingl including a series of spaced.

fuel Vpassages leading inwardly through the wall thereof, means for supplying fuel toA the passages, a tlibular'fuel valve Aconforming to the wall (if the ai'r passage, means' for moving the fuel lval\ 'e,vsaid fuel valve having a' series of notches in its' end corresponding innuinber tothe fuel .passages in the easing, some of the notelies being of greater depth than others whereby the fuel passagesin the casing are progressively brought into free eomm'unieatioi'i with the ai-rpassage.

Q5. Aearhiujete'r comprising in eonibina tion, a -tiilii'ilai easiiig forming an air'passage, said easing ineliiding a series of spaced fuel passages leading inwardly through the wall thereof, means for supplying fuel to the passages, a tubular fii'el valve eonformiiigt-ov the wall of the air passage. a throttle valve for controlling the flow of air through the air passage, means for ysimiiltaneoiisly 'moving the throttle valve and tliefuel valve to admit air and fuel. and a member arranged eentrally ofv the fuel passage, said member being of .greater ei't'issfseetionat one point than at anotherand beingadjustable longitudinally of the air passage whereby the depth ofthe stream of air floiviiig'past ,the endsof llie-fiielpassages `may be regulated.

"2(3.v A earbureter comprising-in combinationx atubularA easing forming an airl passage. said easing including a series of spaced .fuel passages leading in\\ 'ardl v through the wallthei'efof, 'means for supply-ing fuel to' the passages, a tubular fuel'valve conforming tothe wall of .the air ,'passage. a throttle valve for controlling the flow of air through the air passage, means for sii'niiltaneously moving the ,throttle valve and tlie fuel valve to admit aiiaiid fiielfand a eonjieal member arranged eeiitrallvof the fuel passageQsaid membeebeing adjustable longitudinally of the aii passage f orvregiilatiiig the velority of the ali-. eiirreii't. past the rndsof the fuel passages.l

27. A carburetor eon'iprising a easing formingr an air passage, means -for supply- 'ing fuel to-the passage,l a fuel valve for controlling the rate. of fuel supply. a throttle valve. for controlling tligl flow of air through the air passage. said tlii'o'ttlevalve including Cri a p lii| 'alit vof members` meaiis for impartv ing` simultaneous niovement`to the throttle valve. as a whole and to the. fuel valve, the arrangement lieingAsueli' that when the throttle. valve is moved in`one direction from initial position both fuel'and aix" are `admitted to tlie air passage. and when a portion of the. throttle valve is' moved in the. opposite diret-tion air only is admitted. 28. A carbureter comprising a easing forming an air passage, means for supply'- 3 ing fuel to thepassage. a fuel valve for rontrollingtlie rate of fuel supply, a throttle valFe for controlling the How of air through the air passage and comprising apliIrali-tv of members. Athrottle valve control-ling 70'.,

means. a tlir-ottle 'i".il\'e. comprising a plurality ofnieiiib'eis. said members being"'iii ranged to forni a elosed wall a'crossth'e air passage. or'to allow the flow of air only,

or to allow the flow of both fue-l andii'ir, 75

Yresilient means tendingto hold the members in the' first named relation. and means for applying force to the throttle valve controlling means to cause the membersto assinner-either of the. will. y

29. A -earbureter comprising a easing forming an air passage.' ,and a throttle valve 'for controlling the flow'of airthiougli. the passage. a seat for the. throttle v-i ilve..said- 5 throttle valve comprising a plurality of members varranged to form a. closed vwall aeross the opening. means for.moviiig-the members simultaneously in one' direction to allow passagel o f airtliroiigh the space between the valve and thev seat. and -foif "mov- .ing one o f. the members in the oppositejdirection and in respect. to theA remainde'rn'of the valve toallowpassage ofair' between. it and tlieurest of the valve. i A 3Q. earhureter eonipri'siingdn combination a tnliiilaijveasing foiiiiiing an 'air passage. a throttlel va'lvefor theair passage. a. fuel jet-'leading to the air passage.' a tubular valve eoiiforming to the'ivall ofthe l air passage for regulating :the flow of. fuel from the jet. means for simultaneously mov ing the throttle valve andthe fuel valve toAV admit air and fuel toth'e Vair passage. and adjustable means for eontrolling the movel nient of one. of the valves with-reference to theother. j Y

31. A -earbureter eoniprising in combination a tubular easing forming an air passage,

a throttle valve for the 'air passageaa fuel 1 jet leading to' the air passage. aftiibular va'l've. eonformmg to the wall oft-he airpassage for regulating the oiv'of fuel-from the.

ljet'. means for,simultaneously moving the tion a tubular easing .forming an 'air passage.

a throttle valve for the air pa:'-sage.V a. fuel jet leading to the air passage. a liibiilai' valve eoiiforiiiiiig to the \vall of the air passage for regulating tlie. lw ofA fuel from the jet. means for simultaneously movlast nainedrelaftions at 50,

admit air and 'fuel ilo-the air pasage, and

n'leans fg;- contx'olix'lg the movement' of one ofthe Valves with Areference vto the other, said :Controlli-ng means being 'adjustable to '(:auSe'4 a different ratio ,of movement of the vali/'es at one4 Stage of oye-.ration than at zmothelf.'nn addtmnal means 'for adjusting to correspond to Weather or Aaltitude.

In testimony specification.

' e C miRLES L. NEDoML-fi.

whereof I have. signed this

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