US1044245A - Carbureter. - Google Patents

Description

I. R. RIBEDY. CARBURETER.

APPLICATION FILED SEPT. 9, 1910.

1,044,245. Patented N0v.12, 1912 2 sHBBTssHBBT 1.

.3mm/Mofo L R. REEDY.

v ZS/ C@ K el tto/1MM,

inviiir n. REEDY, or DAYTON, c1110.

CARBURETER.

Specification of Letters Patent.

Application 1ed September 9, 1910. Serial No. 581,270.

To all 'inkom t may concew.'

`Be it known that I, IRvnN' R. REEDY, a

citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Carbureteis; and I do declare the following to be a full, clear, and exact description of the inven-A tion, such as will enable others skilled in theart to which it appertains to make andA use the same, reference being had to .the

' accompanying drawings, and to the letters provide means for obtaining and iiguresof reference marked`thereon, .which form a partof this specifica-tion.

Th'is invention relates to new and usepl improvements in carbureters for explosive engines adaptedespecially for automobiles.

The object of the invention ia, tiret, to a homogeneous mixture of the fuell product in the carbu# reter, and before it passes the throttle, and second, to provide means for protecting-the needle valve from undue pressure when said valve closes the gasolene orifice.v taining the first -of these.resi`ilts,-I submerge the lower portion of the tube in `which the throttle valve is placed,` and which I willterm the fuel mixing tube, in an air chamber which extends up around a substantial. portion of said tube. A valve-contifolled side passage enters this chamber, and the submerged'end of the tube acts as a battle to break the current of air coming through this passage and to disperse it in said chamber around the sides of Asaid tube. In addition to this air chamber, an air tube extends through said air chamber upon anA incline andA delivers a constant supply of air directly to the lower endrof the -fuel mixing tube and across the path of a jet of gasolene delivered into the lower end of said mixing tube. -A more particular description of the above means follow as well as of the means through which the second object'named' above is accomplished.v

Referring to the drawings, Figure 1 is a side elevation of my improved carburetor;

Fig. 2 is a longitudinal vertical sectional" elevation; Fig. 3 isa top plan view; Fig. 4 is a section on the line ae-a of F}g. 2;.Fig. 5 is a modification showing adiil'erent form of auxiliary chamber; 'and Figs. 6 and 7 are detail `views of portions of the needle valve controlling mechanism.

In the detail description ofthe invention similar-f reference )characters indicate the uniform diameter with InwolyA structed. c

.The tube 11 for the constant. air supply 1s entering the mixing s ame parts as shown in the drawings and as described.

Patented N0v.12,1e12.

In the drawings, 1' indicates a tube of its lower end crimpedinwardly and which provides thel mixing chamber. tube is provided with screw threads 2 by means of which it'is connected with the manifold of the engine, (not shown). l The explosive `mixture is formed in this tube -below the vthrottle 'valve 3, which controls its passage therethrough. The said valve is The exposed end of this i mounted on a rock shaft 4 journaled in the I walls of the tubev and provided with a lever 5 by which the valve is manipulated. The l opening movement `oir' said valve is con trolled by a projection 6 engaging the lever 5 and the closing' movement thereof is controlled by an adjustable stop 7 engagingthe projecting. end 8 of the lever. The lowerl end of the mixing tube 1 is projected into and surrounded by a pocket 9 in which is located a jet 10 immediately bejlow said tube. .Also opening into. .said pocket, 9 is an airv inlet tube 11, whih furnishes a constant supply of air, and aninlet 12whicli furnishes a variable, supply ofair. The pocket 9 provides. an air chamber for the quick` relief of any over supply of gasolene. The communication between the mixing tube 1 and the air arranged "upon a suitable angle with refe ence to the mixing tube l1 and the gasolene jet, to direct the air across the path of the gasolene as it enters below said mixing tube and to` throw said gasolene together with the air against -tlie walls of the mixing tube, and to thereby cause a thorough `dispersing an mixing or vapoiization. The said air tube 11 is united to the lower end of the mixin tube 1 on that side nearest the variable air inlet 12 and together with the lower end of the mixing tube 1 provides a baille to the air entering said inlet 12. The air pocket 9 isv supplied mainly through the inlet 12 and at' all times furnishes suliicient alito relieve any over supply of gasolene p `tube. j The suction created at the lower end of the mixing tube pocket 9-'is free and unobioo draws into'said mixing tube any additional air fromsaid pocket,I depending upon the with apacling 14 and a nut 15, which pre` The valve 16 is made of fiber so that ,the

closing thereof lis accom lished without noise. The gasolene jet- A 1s supplied from V the chamber 13 and is controlled by a needle silient arm 24. The

" valve 21, which is slidingly mounted in an inclined boss 22 on the wall of the mixing tube l.. The said need-le" valve 21 projects out thropgh the -top offthe carbureter, and is attached to a boss 23, mounted on a reortion of said needle 'valve which enters t e boss 23 is provided with threads, andthe upper end is provided with a thumb piece 25 byv means vof which it is adjusted to control the inlet of gasolene at the lower cnil, of the `mixing tube. The resilient arm 24 is en ageld at the middleby 'a cam 26 on the shaft 4 of the throttle valve. The extreme end of said resilient arm is heldl xed by a pin 27` When the throttle valve 3 isopened, the needle valve is also Aopened by the resiliency of the arm 24, and when said throttle valve is closed, said needle valve is closed by the cam 26 pressing said arm 24. The closing operation ofsaidvalve is therefore accomplished through the positiveaction of the cam. This avoids any uncertainty in such operation of said valve which might be due .to a tendency to clog, and any needless 'admission of gasolene is prevented. In initially adjusting said needle valve, any extendedmovement thereof calculated to jam the needle on its seat or unduly'strain the same, isavoded owin to the resilient character of the arm 24. Vtghen the engine is started and the throttle valve4 3 is partially opened, gasolene will enter through the jet 10 and will be intercepted by the air entering through the tube 11, as

before stated; If the throttle valve 3 is opened to a greater extent, thereby increasing the demand of theengine, the elevation j the needle valve 21 will allow a greater pply of j gasolene, and the automatic valve 16 will supplyj the vair pocket 9, and thus the miXt'uIje/is maintained 'in the same proportions ,irrespective of the speed of the engine. The pocket 9 acts as alreservoir for .the air.' when the throttle valve is opened quickly and the demand' of the engine is inhreased. ,M l

. Thefgasolehe chamber 13from which the jet is supplied, receives the gasolene from lan auxiliary chamber 29 through a valve boss30 controlled by a valve 31. The valve 31 is attached to a iioat 32 in the' chamber 13 and which may be attached to a lever 33 the ioat 32 will beelevated asu cient extent to close the valve 31 and t maintain a ber13.

In order to prime the'carbureter, tlje champroper level of oil in the chamber V13- is provided with a tubular e tension 45 which receives a spring-control ed pin 46. The lower end of said pin engages-a lever 33, and the upper end is adapted to be engaged by a lever 48. en said pin is Apressed downward by the lever 48,.'the float 32 and valve 31 are also depressed, and thus the valve 31 allows the gasolene to fiow from the chamber 29 to thechamber 13. 'lhe chamber 29 receives the gasolene from the thereby main tank through a tubev(not shown) at- I' tached to an elbow 47, which is in turn attached toa valve housing 34L mounted in a casing" 35 and communicating ith. said chambcrL 29 through a passagelvway 36. IVithin Ahe housing 34 is a valve 37, the upper end ofwhich is attached to the end of .a lever 38 projecting {through the passage way 36 into the chamber 29, and which is pivoted at 39. The end of the lever 38 lying within the chamber 29, may be attached to a yiioat 40 which, in connection with the valve 37, maintains a constant level in the chamber 29. As the chamber 29 tlies between the main tank and the chamber 13, the inflow of gasolene to the chamber 13 will not be subjected to th'e great iiuctuations 'in pressure due to the varying height of oil in the main tank, ybut will receive its supply of ,gasolene from the auxiliary chamber, which will be constant, owing to the presence o'f the float 40 and valve 37. The level ofthe gasolene in the chamber 13 will,there fore, always be constant, which insures an unvarying stream of oil through the jet 10 under all conditions. y

In automobiles as usually constructed, the main tank is placed in the rear. This prevents the gasolene owing forward when the machine is ascendili a hill, especially if the supply is low. Under these conditions, the capacity of the reservoir 29 will be suiiicient to meet the demands of the engine until the machine reaches the level and the gasolene vilows forward.

`The extreme bottom of the chamber-29` may be provided with"`a division .wall or plate 41, forming a compartment 42 provided with an inlet 43 and a similar outlet, see Fig. 5. In this case the valve boss 30 extends upwardly into the plate 41. The compartment 42 may be connected with the circulating system of the engine,.and the hot water passing therethrough elevates the ized.

- Means are temperature ofthe 'gasolene, thereby allow- I ing the gasolene be more 'easily vaporu rovided for relieving chamber 13 of vapor. ormed above the gasolene and .to thereby allow a freeientrance of gasolene into s aid chamber to maintain a proper level. j/therein. This means consists o a tube44 which extends from the .top of chamber '13,

`to the upper portion'of the passageway 1. l

Having described my invention, I claim 1. In a carbureter, the combination with a casing providing a asolene chamber, and an air chamber lihereaove, of a mixing tube having its .receiving1 end Vprojected into said air chamber and? 'having' an lunobstructed v communication therewith, a asolene jet projected into .said air chamber elovr said mixmg tube, a tube for the constantsupply of gair projected into said air chamber on an .angle-tothe' plane of said mixing tube and adapted lSto m-teicept the gas0lei1e"at the mouth of said mixing tube and to direct the air and the gasolene against the interior wall of saidV mixing tube, a tube 'forming- 9.,

. lateral pas'sage'f'or a varlable suppl of air to said air chamber, and a throtte valve located v in the upper portionof saidv mixing 'ain a1 carburetor, the' cambiata@ with catin with said air chamber above tli`epro, jecte 'end 'of said mixing tube and providmg a passage for an intermittent sup ly cg air to said chamber, a tube project saidair chamber on an incline to theplane of "the mixing tube and stant supply ofair, a -gaso ene jet rojected, intov said ai'r chamber'b'elow, sai -m1xmg tube and adapted to deliver gasolene to said roviding4 a cony mixing tube across the path of the constant` air suppl ,a valve member controlling said 'et,' a resi ient arm engaging said valve memerV to momentarily control the supply of4 gasolene to said .mixing tube', and a so, `Operated from the throttle valve and acting 'upon said arm to control sald valve.

In testimoni whereof I aflilxmysignature,

in presence o two witnesses.' y -IRVEN/B. BEEDY. Witnesses: 'f

MA'rrHEW Smnnun,

A HOWARD S. Sm'rfn,

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