US1620925A - Carburetor - Google Patents

Description

March 15 1927.

R. M. TANGYE cARBUk R Filed Dec. 9. 1924 2. Sheets-Sheet 1 INVENTOR- R0? M, TANG-YE ATTORNEY.

March 15 1.927.

R. M. TANGYE CARBURETOR 2 heets-Sheet 2 Filed Dec. 9, 1924 INVENTOR ROY M. TANG-YE ATTORNEY.

' in entering will. be'caused to whirl rapidly.

Patented Mar. 15, 1927.

PATENT CARBURETOR.

Application filed December 9, 1924. Serial No. 754,739.

' This invention relates to carbureting devices.

The general object of the invention is to provide an improved carburetor which will produce a highly efiicient mixture for ad-;

mission to the cylinders of gasoline engines.

. One of the specific objects of the invention is to provide a carburetor including a body part having a tubular extension thereon which is provided with tangential aperturesand wherein means is provided whereby air.

entering the mixing chamber of the carburetor will pass through the tangential apertures and will be caused to revolve rapidly.

will enter thefmixing chamber laterally and to effect. complete atomization of the particles of the fueL: j

' A further object of the invention is to provide a carburetor having radially arranged ports thereon and having a capfitted over the ported portion of the carburetor to cause air to enter the carburetor from all sides. 7

Other objects of the invention will be apparent from the following description taken in connection with thejaccompanying drawings wherein Fig. 1 is a central sectional view. through acarburetorshowing my ivention; Fig. 2 is a central section on line 2--2,'Fig. 1 Fig. 3 is a section on line 33,

Fig. 1; Fig. 4 is a detail in elevation showing the method of adjusting thethrottle; F1 g.f5 is a section on line 5-5, Fig. 1; and Fig. 6 is a central. sectional view of a modified form of my invention.

,Referring to 1 the drawing by reference characters, I' have shown a carburetor em-,

bodying thefeatures of my invention at 10. Asillustrated, the carburetor comprises a body. portion or casing having afloat chamber llthereon. The float chamber may ac conimodate a float 14. which may be mounted on pivots'15 for controlling the flow of gasoline through the supply pipe 16. The float chamberispreferab-ly a cylindrical chamber or well as shown at 17. Adjacentthe float chamber 17 I show the casing as provided with a longitudinal bore 18. j The axis of this: longitudinal bore is preferably arranged at right angles to the axis of the chamber 17. ,The longitudinal bore 18is indicated as provided at one end with athrottledevice 19 T Another object of theinvention is to provide a carburetor with means whereby air mixing chamber 4 chamber.

shown as a butterfly valve. The bore 18 is FEE. A

ROY MORTIMER TANG YE, or DENVER, COLORADO.

constricted as'at 20 and in this constricted 1 part .I arrange a needle valve 21/ This defining. the bore 18 is provided with a wall 31 of substantial thickness. The walll31 at .the end is fitted with a closure plate 32'as clearly shown in Fig.1.

The wall 31 is shown as provided a plurality of elongated slots 35, the wallsof which, as shownat 3'6, aretangentially..arranged to cause air enteringthe walls to be deflected to produce a whirling action. l

The portion 31 of the carburetor is'adapted to be surrounded by, a cap member 40. The cap member is shown as provided with an end flange 41 which may. fitupon a shoulder/12 on the casing and maybe secured thereto by fastening members 43. The capv {i0 is spaced from the wall 31 so as to.pro-. vide a passage entirelyv around this wall. The cap 40 is provided with a restricted portion 15 in which I mount a choke Valve" 46 adapted to be operated by means of-a lever 47. The choke valve controls the. amount of air passing throughthe mixing A passageway 50 7 ing and servesto connectthe float chamber or well 17 with the needle'valve chamber 51. The gasoline in, the needle valve chamber 51 will bedrawn therefrom by the partial vvacuum' produced in the engine and will be, atomized in the usual manner.

In order to. provide fa' by-pass from the chamber 51 to the'intakemani-fold and. to provide .fuel for idling when the valve 1 9 is entirely closed I show. a passage 52 which I extends through the casextends from a point adjacent the top of the chamber 51 laterally in a protuberance 53." The protuberance 53' is provided with a vertically threaded well 54 in which 'I arrangea threaded seat 55 and a threaded valve 56. The valve 56-is, provided; with a is provided with a conduit 60 which leads tothe-intake 18'. The valve v19 is shown (in dotted'lines) in closed position and it will screw driver engaging'slot 57 and with a central aperture 58. Thevalve chamber 59 be noted that when it is closed thepassage- 1 way 60 remains unobstructed so that. a mixture of air and gasolinewill be drawn directlyv to the intake 'manifold. Tlie' relative amount of air and gasoline drawn may be adjusted by inserting a screwdriver in the well 54 and turning the threaded valve 56. The needle valve seat 22 may be arranged in the well 51 which is in a protuberance 61 as shown in Fig. 2. This valve seat 22 may be threaded as at 63 and the well 60 may 7 be closed by the threaded cap 64 as shown.

' will be drawntl rough the needle valve 22 7 into the restricted portion20.

As the gasoline enters the mixing chamber containing the needle-valve it will meet the whirling air entering therein and the fluid droplets or unvaporized gasoline will be broken up and thoroughly atomized so that a uniformmixture will be fed to the engine The reduced bore '30 provides a shoulder 65. This shoulder serves to constrict the advancing column of whirling air in the chamber and sets up what might be termed a miniature whirl wind in this chamber thus'virtually tearing to pieces the unvaporized fuel. 7

It is well recognized that a large amount of the knocking in engines, the deposit of carbon, the heating of the engine, etc, is

'7 brought about by the fact that the carburetorsheretofore in use have delivered a mixture composed partly of atomized gasoline and partly of gasoline in the form of minute droplets. In order to secure good results within the engine cylinder, it is essential that the mixturetherein not detonate but rather that it beignited by the spark plug and burn.

' When themixture comprises atomized gasoline and thesefuel droplets the latter do not burn but explode thus causing a loss in energy,'knocking and many other objections. With my invention the droplets are broken up and a superior mixture results.

In Fig. 6 I have shown a slight modification of my'invention wherein the casing 70 V is provided with a float chamber 71 and a mixing chamber 72. The float chamber may contain a needle valve 73 and a passageway 74 may serve to connect the float chamber with the lower portion of the jet forming a chamber containing the needle valve 75. This needle valve device includes a spraying member 76 which is secured on a body 77. This body 77 is provided with acincumferentially slotted recess and a diametrical recess 7 8 which forms a passageway for gasoline from the conduit 74:. The body 71 has a longitudinally extending recess 80 therein which communicates with a transverse recess 81 on the tubular member '81 therein. The

inner end of the transverse recess is provided with a needle valve member which is adapted to co-act with a threaded plug 83. This threaded plug is hollow having a cavity 84 therein and having at the end a valve seat for co-actingwith the valve member. The hollow cavity 8 x communicates by means of a lateral recess 85 with the longitudinally extendingcavity 86. 1

The longitudinal cavity 86 in turn is connected with the discharge opening 87 shown 7 body of air about the spraying nozzle 76.-

The carburetor is shownas provided'with an intake passage '92having achoke valve 93 therein. i 7

From the foregoing description it will be apparent that air drawn into the carburetor will enter through the tangential recesses 91where it will .be caused to whirlrapidly, thus breaking up and atomizing the fuel which passes the needle valve.

Both forms of carburetor described may be provided with the valve control mecha nism 95 shown in Fig. 4. This control valve comprises a body 97 having a} projecting lug 98. This projecting lug is shown as provided with a threaded member 99 and with a lock nut 100 for holding the threaded member in adjustedposition. The threaded member is adapted to have its end portion 101 engage a stopmember 102 conveniently arranged so that the maximum amount the throttle may move will be limited.

Having thus described my invention, I claim: i

1. A carburetor comprising a casing hav ing a float chamber and having a transverse member at one side thereof, said transverse member having an' axial bore therethrough, one end of saidtransver'se member comprising a tubular body having a closure at its outer end and tangentially arranged slots in the peripheral wall of said tubular body. g

I 2. A'carburetor comprising acasing' having a float chamber and having a transverse member at one side thereof, said transverse member having an axial bore therethrough,

a nozzle in said axial bore, one end of said transverse member comprising a tubular projection having a closure on its outer end, tangentially arranged slots in the peripheral wall of said tubular projection and a cap fitted about said tubular projection and spaced therefrom whereby air may be directed to said slots.

3. A carburetor comprisinga casing having a float chamber therein, -a transverse member having a central bore arranged adjacent said float chamber, a nozzle in said bore,'a connection between the nozzle and the float chamber, a passageway for air to the nozzle, an end closure plate for said passage, the walls defining said passagehaving tangential slots therein, a cap for closing said tangential slots, said cap having a side wall spaced from said slots and a choke valve for controlling the flow of gasoline to said cap. 1

4. A carburetor comprising a casing having a float chamber and having a transverse member at one side thereof, said transverse member having an axialboretherethrough provided with a reduced central portion, a nozzle in said reduced central portion, a

passageway leading from said float valveclosure at its outer end, tangentially arranged slots in the peripheral wall of said tubular projection and a cap fitted about said tubular projection and spaced therefrom, whereby air may enter said slots'and avalve for controlling the admission of air= to the transverse member.

In testimony whereof, I hereunto signature.

ROY MORTIMER TANGYE.

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