US1260980A - Carbureter. - Google Patents

Description

' 6.1. KENNEDY.

CARBURETF-R.v Aerumou msn umn. ms.

PatenedMar. 26, 1918.

EEE

*mitm-mnt UNITED STATES PATENT OFFICE.

GUY L. F LOS ANGELES. CALIFORNIA, ASSIGNOR, BY HESNEASBIG T0 AUTQ BETTEBHBNT COBPDRATIONfOF NEWARK, NEW JERSEY, A COBPDRLIIDI GABBU'BETEB.

0F DELAWARE Specicntion of Letters Patent.

Patented Mar. 26,1918.

j lL llllitlliitm met! Hitch 29, 1018. Serial I0. 87,592;

State of California, have invented a new and useful Carburcter,l of which thefollowing j a ecicatiom his 'invention' relates tov devices of the character desi ted to 'produce gas from liquid h vdrocaivons and mixsaid'gas and a suitable volume of air together to make an ignitible mixture for producing-heat,ligl1`t or power, the volume of the mixture beine proportional to the draft of air thro'ugh t e device, said draft being produced for-power purposes, for instance, by suction of the 4en e to which the device may be. attached. nobject of this invention is to produce a device of this character which is simpleto manufacture and reliable in operation.

Another object is to )reduce a device of this character in which t ie throttle valve and fuel valve are simultaneously controlled..

Another object is to make provision for ver) delicate adjustment of the degree of openingof the fuel valve.

Another object is to so construct the cam for limiting the movement of the needle valve as to permit of adjustment of the cam at ditlerent portions thereoso as to enable the operator to malte the proper gaseous mixture for all s needs of the engine to which the device may be attached and so as to obtain maximum speed and power with a minimum consumption of fuel.

Other objects and advantages may appear in the subjoined detail description.

The accompanying drawings illustrate .the invention:

Figure 1 is an elevatiii of a carbureter built in accordance with this invention. the arcuate cam member beingi partlyshown' in section for clearness of illustration.

Pi :2 is a vertical sectional elevation'on linemdicated b v :eL-?, Fig. 1.

Fig. 3 is a plan section on line indicated by .r3-:113, Figs. 1 and :2.

Fig. -i is an enlarged elevation of the valve plug and cam parts and their adjusting means. the parts being in thefpartly open position.

There is prvidedan L-shaped passage i having a contracted cylindrical throat 2 and terminating above the contracted throat in an upwardly expandin circular mouth 3. Thevpassa 1 extends t rou h' the peripheralwall o a cylindrical car uretin 'chamb er -l `with which it may be integra j if. desi-redf-as shown in the drawings. i'

The `Lsshalned passage 1 1sv provided in axial alinement with the mouth 3 with a nipple 5 through which 'passes a vertical .fuel sulpplj` tube 1 3 terminatingy at its top in a nozz e of somewhat greater inside diameter than the inside diameter of that! portion ot' the tube below the nozzle, said tube being provided at the lower end of the nozzle with a valve seat T adapted to be engaged by a needle valve S so that.l the passage of fuel through the tube 6 from asuitable source of supply, not shown. may be controlled by appropriate operation of said needle valve. The upper end of the stem 9 of the needle valve S projects above the rim of the mouth 3 and is provided with a semispherical or saucer-shaped fuel spreading air valve 10 of substuntiallv the same vcurvature as thel curvature of the' inner'. surface of ,the mouth 3. The valve 10 rests close to but is slightlvspaced from the mouth 3 when the needle valve is on its seat T. Thus there is always an annular passage of comparatively small cross sectional area between the valvelO and mouth the cross sectional area of said passage being increased and diminished. by raising and lowering ofthe valve 10. The upper end of the valve stern if is adjustablv limited b v a adjustable abutment formed bv the inner end of a lever 11 lwhich is pivoted at 12 toy a bracket 13 fastened to the top of the carbureting chamber l. T he lever .11 has its outer e'nd )rejecting through a' simil] slot 14 in the wa lof the carbureting chamber 4 'and the outer projecting end of said lever is adjustablv limited in its downward movementb v an adjustable cam face 15 formedA of spring. strip metal. The ends of the cam face l'are loosely bent around the ends ofl an' arcuate 4cani-'conveying member 16 which is provided with aV number of adjustingscrews 1i'- from end to end thereof, said screws bearing against the under side of the cam strip so that b v adjusting said screws the contour or curvature of the cam strip may be changed from en to end or at points intermediate of ai# ends.

The arcuate member 16 is at one end of ico v is

'one arm 1840i a lever, the other arm of said lever forming a platevalve 19 at the inlet end of the'air passage 1 adapted to ch'iitrolV the passage of air from the-atmosphere into" said ai-r passage, there being an airport 19' opening through the valve 19 so. that 'even when saidA valve is closed a small volumeof air can pass into the passage 1. Thelever 18, 19 ispivoted at 20 to the carburetling 'chamber 4 and said lever is operated by any suitable means, there being provided foifthis lpurpose a bossl 21 on the va ve 19 and an operatmg rod'22J engagingfsaid boss.-v

, 'The tube 6 is screw-thrcaded through a bushing 23`which in turn is screw-tl'ireaded -in'tothe head 240i a homogeni'zing chamber "which comprises besides said head a vcylin- "a1-ical body 25 that is screwfthreaded at its lower end into said head2-1 and is screw- V11101110gniin -portion of t e tube 6 extending from the threaded'at its upper end into the carbureting chamber -4' be ow the air passage 1, .said 4chamber surrounding that ni le 5 to the head 24. l

e homogenizing chamber is provided with a tube 26 having its lower end -spaced apart from the head 24 and having its upper end expanded to'form a conical mixture inlet. 27 which has its rim fitting against .the

inside of thecylindrical body 25. '1" he tube 26 is provided inside and outsidevwith a woven lfabri" mantle 28,wh ich Ymav1 be 'of lcloth or other, suitable material. The tube l 6 .is rovided ionl itsfoutside ,with a mantle 29o woven fabric the same as themantle A 28, said mantlesserving to catch any unble to any gas consuming device as, for instance,

an internalcombustion engine, the suction .of'said engine producing the draft necessary -tolift the valves `Sand 1Q.A Thenecessary draft may be producedby a blower as dis- ,closed in my copending application for pat,...y

ent for apparatus for producing a combusti- Serial No. 79,313.

In practice, assuming that the-outlet pipe as consuming device,

30 is attached to a such, for instance, as t e intake of an internal combustionv engine, ancbassuniing that the tube 6 is connected to a suitable source of liquid hydrocarbon supply, the suction produced by the operation ofsaid engine will operate to lift the valve .10 as `high asthe strength of said suction will lift it or as high A as the lever 11 will permit ,and air will pass through the port 19 into the air passage 1,

thence through the neck 2 andv annular pasaseous mixture, fi ed' February 19,1916,

sage q and out of the mouth 3 into the carburetmg chamber' 4; Lifting vof the valve 10' raises the Avalve. 8 from its seat to admit.

liquidhydrocarbon from the tube 6 and bubbles of s are formed around the .rim ofthe valve 1 g'but a large proportion of the fue] admitted by the va ve 8 is still in the form of a vapor or fog. The hydrocarbons, whether us or liquid, pass from theI mouth 3 ilownward throu h the tube to the lower end thereof and t ence u ward bctween the tuber 26 and cylndrica member 25 to the outlet tube 30 through which the) ow to the 4gas consuming device not shown.

I It is noted Vthat vin the downward` passa e of the hydrocarbon and airV through t ie carbureting chamber 4 to the up er lend of the cylindrical member :25uj any, iqiiid particles of hydrocarbon in the mixture will inipn on the mautles Q8 and 29, and owing to t e attenuating effect of the mantles on 'the liquid partc1e`s,sad liquid particles will be gasied so that themixture passing from the gasifyng chamber will be nothing but a mixture containing hydrocarbon gas and atmosphericgases which vtogether form an ignitible gaseous mixture capable of being urne'd or' exploded in the gas-consuming evice.

port 19. `and with the cam strip 1T adjusted .so tllatbut a minute quantitv of liquidhv- `dro'carbon will be admitted by the valve S ,to tlic nozzle, only a smallvolunie of gaseous mixture of aV constant or uniform quality will be produced by the device and will pass .to the engine thus causing said engine to run at comparatively low speed. lVlien higher speed of the engine is desired, the operating A'rod will be moved to open the valv'e 19 and swing the aren-ate member 1G so as to move the' cani strip l5 into sucli posigion as y:to bring a lower point thereof at jac nt the outer end of the lever 1'1, thus permitting more liquid hydrocarbon to be sucked from tlie tube 6.v The increased volume of gaseous mixture thereupon ,resulting will` pass to the engine and of course, as is readily understood, will produce greater rotative speed thereof in amanner Vwell understood in the art..`

thereof for the most economical use of the Ah vdrocarbon fuel c-.isilv eiected because. `with the valve 19 closed, the appropriate screw 1i' will be adjusted to reduce the quantity ofliydrocai-boii admitted to the nozzle to the minimum capable of maintaining idling speed of the engine.A Then the valve- 19 will be opened to the maximum or to any desired extent and the screw 17 a-dacent-tlie outer end of the lever 11 will be adjusted so Then the device is first installed in connection with an engine, perfect adjustments.

Vith the valve 19 closed so that the only p air `admitted to the device is through the Itis noted that the arcuate member 16 and lever arm 18 form Va member that is. in adjustable relation tothe valve 19 and that the pivot 20 is in the form of a shouldered thumb screw4 or stud. The arm 18 and valve 19 are held .against relative rotative movement by a lspring member 31 through which the thumb screw 20 passes, one end of said spring member being bent 'into engagement with .a hole 32 in the arm 18 and the other end of said spring member being lient into engagement with any one of a series of holes 33. When the thumb screw 2l) is tightened up itholds the spring member 31 in engagement with tlie'hole 32 and with 'one of the holes To change the proportions of air and hyldroearbon without changing the contour of theeam strip 15 all that is necessary is to move the spring member 31 to the right or left relative to the valve 19 in Fig. 4 so as to bring a different poi-tion of the cam strip adjacent the outer end of the lever 11 for any given position of said valve relative to the inlet end of the air passage 1.

- The foregoing will enable those skilled in the art to which this invention appertains to make and` use said invention.

I claim:

1. In combination, a carbureting chamber, an airpassage in the earbui'eting chamber, a fuelsupply tube terminating in the air passage, a draft-operated valve for the air passage, a needle valve for the fuel supply tube operative by,` movement `of said draftoperated valve, another valve for the air passa e, an arm pivoted to the third named va ve, means controlled by movement of said arm to adjustablv limit the lift of the air valve, a member for operating said arm, and

means adjustably fastening the operating member to the third named valve.

2'. In combination,l a carbureting chamber, an air passage in the carbureting chamber,

-afuel supply tube terminating in the air passage, a draft-operated valve for the air passage, a needle valve for the fuel supply tube operative by movement of said draftoperatled valve, another valve for the air passage having holes therein, a spring member having one end bent, means to pivotally hold said spring member with its bent end in en.- gagement with any one of said holes, and means operative by adjustment of the spring member for engaging another of said holes to adjustably limit the lift ofthe air valve.

3. In combination, a carburetin chamber, an. air passage extending into tie mixing chamber, a fuel supply tube having its discharge end in the air passage, a lionu'igcniv.- ing chamber fastened to the lower end of the cai-bureting chamber and surrounding the `lower end of the fuel supply tube, a second tube surroundinfr the lower end of the fuel supply tube and terii'iinating at its upper end in a'conieal portion extending to the wall of the gasifying chamber, a mantle of woven fabric on the outside of the first named tube,'a mantle of woven fabric onthe inside of the second tube, and a mantle of vvcven fabric on the outside of the second tu e.

l. In combination, a carbureting chamber,

an air passage opening through the wall of the raibureting chamber, a valve to control air entering the inlet end of the air passage, a draft-operated valve to control the passage of air from the air passage to the carbureting chamber, a filel supply tube having its discharge end in the air passage, a valve in the fuel supply tube operated movement of the draft-operated valve, a cam operative by movement of the first ,named valve and a lever having one end arranged to limit the lift of the draft-operated valve and having its other end extending adjacent the face of the cam.

5. In combination, a carburetinr chamber, an air passage opening through tlie wall of the carbureting chamber, a draft-operated valve to control the passage of air from the air passage to the carbureting chamber, a fuel supply tube having its discharge end in the air passage, a, valve in the fuel. supply lube operated by movement -of the draft-o erated valve, means tollimit the lift of tllie draft-operated valve, and a cam operative to adjust the limiting means, said cam having an adjustable face whereby the lift of the l draft-operated valve may be varied.

6. In combination, a carbureting chamber, a homogenizing chamber fastened to the lower end of the carbui'eting chamber, and

tube, a second tube surrounding the fuel supply tube and terminating at its upper end 'a tube inside of the homogenizing chamber ina conical portion extending-to the `wall of the homoenizingchamber, and a mantle of woven fa ric on the outsidevof therst namedtube.

8. In combination, a carburetin chamber, an air passage extending into -t e mixing chamber, a fuel supply tube having its discha'r end inthe air passage', a homogeniz- .ing c amber fastened to the lower end of the carbureting chamber and surrounding the vlower end ofy the fuel supply tube, a second tube. surroundin the lower end of the fuely supply tube am? terminating at its upper end in a conical portion extending to the -wall of the gasifymg chamber, amantle'of woven fabric on the qutsde of the first named tube.'and a mantle of woven fabric on the inside of the second tube.

9. In combination, a carbureting chamber, an air passage in the carbnreting chamber, a fuel supply tube terminating in the air passage, a draft-operated valve for the air passage, a needle valve tube operative by movementof operated valve, another valve-for the air passage, a cam-ca member adjustable relativeto the last named' valve, a ealn momber adjustably 'mounted on the cam-carrying member, and means cam to the draftfoperated valve to; limit the lift of-said valve. y l l 10. In combination,v a carbureting ber, a homoge chambela tube' in the homogenizing ehamiie r commlim'cating with the carburetmg chamber, and a mantle of woven fabric supported by said tube.

Signed atvLosl Angeles, California, this 21st day of Marelaim.- e

t GUY L. KENNEDY.

Witnesses:

Gnomi: H. Huss, Alexa F. Scmmmmin.

for the fuel supply' draft-

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