US1715183A

US1715183A - Cakbttbetor

Info

Publication number: US1715183A
Authority: US
Publication date: 1929-05-28
Anticipated expiration: 1946-05-28

Description

J. AUDINC CARBURETOR May 2s, 1929.

Filed Deo. 2l, 1925 j, @w l.

yPatented May 28, l19.29.,

c v.rosriri ANDINO, or EAs'r BRADY, PENNSYLVANIA;

f iriaia WHC@ Partnr l' cAnBUnE'roii. A

Appiieauonniea recenter 21,1925. 'serial No. 76,789.

This invention relates to improvements in carburetors pertaining more particularly to a carburetor'of the type having no float but *feeding a directvflow of gasoline to the car buretor and controlling said flow by an auto.n matic feed which in reality, takes theplace of the float in the common and well known type of carburetor nowon the market.

The primary object of the invention is the provision of means Afor feeding gasoline di- .rectly'to the carburetor.

" Another object of the invention the ypro-V vision of a carburetor in which gasoline is feddirectly to the carburetor and the feed of said 'gasoline is controlled automatically through the medium of the engine speed;

Another obj ect ofthe invention is the provision of a carburetor Y of the character described which will in operation, increase gasoline mileage andlprev'ent engine knocking.

A; still further object of the invention is the provision of a carburetor of the .character described which is constructed in a manner to prevent ire in case the engine backfires vrAnother and further object of "the invention vis the provision .of a carburetor of the character described Vwhich is cheap and simple of manufacture and readily adaptable as a replacement to the common Aform` of carburetor .usuallvfound in useon hydrocarbonmotors.V

` provision of Lacarbu'retor which is practically automatic in operation thus vavoiding the necessity of adjustmentforuse withdiiferent types of motors.

Other further objects and novel features Y f of construction andimproved results ofthe invention .will appear in the following description and accompanying drawing:

In the drawing: l j .Fgure 1 is a verticalsectional viewy of a carburetor made in accordance with this invention. Y Y

Figure 2 is an end Aview of the carburetor. a In describing the invention in detail, refer- I fence being had to the .drawings in which: like parts I have designated'by .similar reference ward its open end 9 so that this end of the body portion is slightly larger than the inner end. The open end 9 is closed by a door 10which is preferably mounted on a hinge 11 and normally held in-closed position by a suitable spring catch 12. YThe door is provided with an opening 13 to permit the pas sage of air into the carburetor and intake manifold. 1 y

The' air control comprises a pivotally mounted shutter 111, the end 1570f whichV engages suitable depressions 16 in theface of the door so that the shutter will remain in any position set when. operated by the handle 17. It is readily apparent Vthat by rotatingthe Ashutter 17, the size of the orifice can be varied at will.

Adjacent the inner end of the main carburetor housing or. casting there is mounted a commonpform of butterfiythrottle valve 18. The construction ofthis valve is conventional and comprises the Valve 18 which iscarried by a rotatably mounted shaft 19,-the upper end of which extends through the carburetor casting and carries a bell crank 20, one end 21 Vof which is adapted to be connectedwith yan operating member, which is usually lead for the sake of convenience to the dashboard of thejvehicle or to such other convenient position as to be readily operatedat will. As is com mon in this construction, there is ,pro-

vided a stop 22 which is adapted to be engagedbythe stop member 23 which forms a part of the bell crank.

' Positioned Within ythe carburetor, preferably at a point approximately intermediate its length, there is a regulator comprising a washer shaped member 24 and a flap valve 25.Y .Due to the-tapered walls ofthe casting 5, this member is held rigidly in place, although in the preferred form a set screw is provided vwhich penetrates the outer wall of the carburetor and engages this member for further locking itin place.`l The Hap valve 25 is pivotallymounted on the washer member as at `26 and 4closes the opening 27 in the washer.'

Rigidly` attached to the valve so as to move therewith, there is an outwardly extending arm 28, this lever extending through 'the `washer' opening 27 to a Vpoint well in front vof the washer.

Gasoline is fed to the carburetor by means of thesupply pipe 29 which is iny communiwhich carries the needle valve 32. The plug 31 is a close lit in the opening/'33 in the casiting 5, being vheld in place by tension of the spring 844r which exerts an upward pressure upon the L-shaped bracket 35 which bracket is in turn heldin any -desired position'- through the medium of the bolt 86 and nut 37 which form a part of the bracket 39- which is rigidly attached to the casting as at 40.

The needle valve 32 operates on a tapered seat 41 and is provided with an extending portion or rod 42 which extends downwardly into the carburetor body at a pointabove thek flap valve operating lever 28. The upward movement o1 the needle valve is controlled by the ad]ustmg screw 43 `which extends downwardly through the chamber whereby this extending end 44 is positioned at a point adjacent the upper face of the needle valve.

ySuitably mounted on coil springs 45 posiv tioned on the upper face vof the control llever 28, there is a plate 46 which is normally in engagement with the lower end of the needle valve stem or pin 42. f

A manual control for the flap valve 25 is provided in the form of a bell crank 47 which is adapted to operate the shaft 48 which in turn operates the forwardly extending lever 49 which is provided with a cup-shaped outer lend 50 which engages the rod 51. The. rod

5l extends through the carburetor body 5 and upon 'the operation of the bell crank lever will engage the lever 28 so as to raise this lever and open the needle valve. The rod 51 is normally in the positionv shown in Figure 1 of the drawings, by reason of the coil spring 52.

Connection is -led from the bell crank 47 to a point of Vconvenience for operation, this connection being made with the arm 53 of the bell crank. f

Operation.

IVith the parts in the positions shown in Figure 1, the 'gasoline feed to the carburetor is closed. To enable the starting of the motor, it is necessary to actuate the primer Awhich comprises .the operating arm 49, and

rod 51, soas to raise the flap valve lever 28 ywhich will cause the plate 46 to lift thencedle valve and permit the passage of gasoline of the carburetor is automatic.

to the motor, it being understood when the ,arm 28 is elevated, the flap valve 25 is carried to an open position. In starting the motor, the throttle control is always opened and for this reason the butteriy valve, which is actuated through the throttle control, will p permit the this valve further open and in so doing will elevate the outer end of the iap valve lever 28 which will in turn lift the needlevalve' to passage of a. greater amount of fuel. ,l

The automatic operationof the carburetor can be rcontrolled to a large degree by the position of the shutter 14 as the engine can suck a volume of air through the carburetor in amounts only in proportion to the size of the oriiice or opening l1V f -v f The movement of the needlevalvecan be controlled by the regulating screw 'or stem 43. i` f g From the foregoing it willbe: seen that I have provided a carburetor for feeding'fuel directly to the hydrocarbon carburetor and have eliminated the use'of a loat valve.

Furthermore it will be seen that theV operation of the carburetor after they motor has once started, is automatic,"and.that fuel in proportion to the speed of the motor will be furnished for the reason that the speed of the motor controls the suction and velocity of the air through the'carburetor housing or casting 5. As the motor speeds up, a greater amount of fuel is drawn into the intake manifold and likewise .a diminishing amount of fuel is drawn in as the speedy of the motor decreases. y l Y l Furthermore, it will be seen. that the con-A struction of the carburetor is simple and that further opening'of the ilap valve Yafter the"Y needle valve has reached its limit of movement.' Until the needle valvej engages Vits stop 32 the springs-below the plate 46 vhave Vnot been compressed. If, after the needle valve has reached its stop and limit of movement, the throttle valve is opened wider,the

flap valve is accomplished through the compression of the plate springs`45. v In other i words, theV limit of movement of the needle valve and flap valve is not the same nor is'it reached at the same time. Vhen the needle valve reaches itsV extreme open position enough gasoline can pass to the mixing cham- 1 -ber to supply the engine at any speed, provided sun'icientl air is supplied. The connecs tion between the flap valve and need-le valve is such as to permit a continued movement of the flap valve after the needle valve has A reached its extreme limit `of movement.

Having thus described my invention what I claim and desire to secure by Letters Patent 1s: f v

1. A carburetor comprising a mixing chamber having an air-intake and affuel supply,

1'10 flap valve will be caused to open to agreater extent and this additional movement of the a needle valve in said fuel supply, saidneedle valve being normally closed and having an extending 'portion kprojecting into said mix-vV ing chamber, and an air-operated valve pivotj ally mounted in said mixing chamber and beextending portion projecting into said mixing chamber, anl air operated valve pivotally mounted in said mixing chamber and being provided with an extending member carrying a'plate resiliently mounted thereabove and having engagement with the extending portion of the needle valve, and adjustable meansto control the opening of the needle valve, for the purpose described. i

3. A`v carburetor comprising a housing forming` a mixing chamber having an air-intake and a. fuel supply, said fuel supply comprising a conduit extending into the mixing chamber and being adjustably mounted in respect thereto, a needle valve extending .through said conduit having a portion projecting into the mixing chamber, and an airoperated valve pivotally mounted in the mixing chamber and being provided with'a-n extending member carrying upon its top a resiliently mounted plate having engagement with the projecting portion of the needle valve, whereby said needle valve is opened and fuel supplied in amounts in proportion to the volume of air admitted.

4. A carburetor comprising .a mix-ing chamber having'an air-intake and a fuel supply, a needle valve in said fuel supply, said needle valve being normally closed and having a projection into said chamber, an air-operated valve mounted in said chamber and positioned therein .at a point intermediate the fuel supply inlet and outletside of the chamber, and said air-operated valve being provided'with an extending member carrying a resiliently mounted plate having engagement with the projecting kportion kof the needle v5. Acarlouretor comprising a mixing chamber having an air-intake and a fuel supply, means at the inlet end of said chamber to control the inlet of air to the same, a needle valve in said fuel supply,` said needle valve beinfrinormall closed and havinoa ortion .a n b project-ing into the mlxing chamber, an airoperated valve pivotally mounted 1n the mixl ing chamber and positioned therein at a point intermediate the fuel supply inlet and outlet side of the chamber, said air-operated A valve being provided with an extending member carrying a resiliently mounted plate having engagement vwith the projecting portion of the needle valve for actuating the same,fan adjustable stop for the needle valve and said resiliently mounted plate acting as a resilient stop for the air-operated valve, for the purpose described.

6. A carburetor comprising a mixing cham-V ber having an air intake and a fuel supply, a needle valve in said fuel supply, said needle valve being normally closed and having a projection into said" chamber, a washer mounted in (said chamberV and positioned therein at a point intermediate the fuel supply inlet and the outlet side of the chamber, an air operated valve pivotally mounted upon said washer and having an integral arm extending to a point beneath the needle valve and a plate resiliently mounted upon said arm and havingengagement with the proating the same.

7. A carburetor comprising a mixing chamber having an air intake and a fuel supply, a needle ,valve in said fuel supply, said needle valve being normally closed and having its lower end projecting into said mixing chamber, an air operated valve pivotally mounted in said mixing chamber and positioned therein at a point intermediate the fuel supply inlet and the outlet side of the chamber, said air operated valve having an integral arm extending to a position beneath the projecting end of the vneedle valve, and aplate resiliently supported upon said arm and having engagement withthe extending Vend of the needle valve, whereby said needle valve is opened and fuel is supplied in amounts in proportion to thev volume of .air admitted.

, 8. A carburetor comprising a tubular mixing'` chamber having an air intake and fuel supply, a needle valve controlling said fuel supply, said needle valve being normally closed and having an end proj eeting into said mixing chamber, an air operated valve pivotally mounted in said mixing chamber and positioned thereinV at a point intermediate the fuel supply inlet and the outlet side of the chamber, said air-operated valve norvmally closing said tubular chamber against the passage of air or fuel therethrough and provided with an arm extending lengthwise the said chamber to a position beneath the.

projecting end ofthe needle valve, and said Varm having operative engagement with the extending end of the needle valve, whereby said needle valve is opened and fuel is sup- JOSEPH AUDINO.

jecting portion of the needle valve for actu- 4