US976692A - Carbureter. - Google Patents

Description

H. M. REIGHENBAGH; OARBURETER.

#PPLIGATIOH FILED APR. 1. 1910.

Patented Nov. 22, 1910.

A 2 SHBBTSSHEET 1.

N fitter/megs H. M. REIGHENBAGH.

OARBUBETER.

QPLIQATION nun APR.1 1910.

UNITED sTArEs PATENT OFFICE.

HENRY M. REICHENBACH,.OF CHICAGO, ILLINOIS.

oannunn'rnn.

T all 'uihom' it may concern:

Be it known that I, HENRY M. Ruler-imp" BACI-I, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certainnew and useful Improvements in Carburetors;

and I do hereby declare the following to be i a full, clear, and LXtl'tli'tlSCIlP'tlOIl of the invention, such as will enable others skilled in the art to Which'it appertains tomakeand use the same. i

My invention relates to improvements in carburetors for supplying volatilized liquid fuel to internal combustion motors.

The objectsof my invention are to provide an improved 'carbureter with means for effecting an improved control of the auxiliary air supply, an improved volatilization of the fuel, having removable nozzles controlling the initial. air supply, making it possible with one apparatus to i'neet varying motor conditions, and having a tangential auxiliary air current and means for pro-.

ducing a vortex around the fuel nozzle to sub-divide the fuel and bring it into 111M inate contact with a he-at supplying surface.

VViththese objects in View, my invention consists in the construction and combina- .tions of parts as hereinafter described and olainied.

In the accompanying drawingsFigure 1 is a side elevation, partly in section, of my improved carburetor. Fig. 2 IS a cross-section thereof on the line 22 ofFi 1. Fig. 3 is a side elevation,showing part of the means for controllingthe auxiliary air current. Fig.4 is across-section on a larger scale of the upper part of. the volatilizing apparatus, Fig. 5 is a view, partly in elevation, showing the removable nozzle for the initial supply of air,

surrounding the fuel jet. Fig. (5 is a cross section through the initial air nozzle, showing the inlets arranged tangentially. I

. 1,..represents the inlet supply for the fuel,

'ivhidh delivers into a large casing 2, having a float 3 therein. This casing 2 is fastened to the body of the carburetor by long bolts 3*. The top 'of the casing 2 is open, and in it is screwed a ring 4, into which is screwed a downwardly projecting cylinder 5, the upper end of. which is open. In a central ,perfoiat-ionin thelower head 6 of the cylindcr 5, crewed a tube 7, communicating .with the inside of the casing 2 said tube fleeing beveled at its upper end.

Within this Specification of Letters Patent. Application filed April 1, 1910. Serial No. 552,913.

Patented 'Nov. 22, 1910.

tubeworks freely a needle valve 8. This needle valve is provided with a screw-threaded shank 9, operated by a: head 10 and passing through a screw-threaded projection 11 in the bottoin'of the casing 2. v v

12 represents a nut, which is screwed onto the lower end of the projection 11 and holds in place apacking 13 to prevent leaking.

14.- represents the initial air nozzle, which is open at the bottom and provided with a cone-shaped upwardly projecting portion 15, located above the end of the tube 7. The tube lt is provided with. a number of iiicliiied tangentially arranged inlets 16, so

" arranged that as the air and fuel are sucked in, a vortex will-be formed, thus aiding in the thorough volatilization of the fuel. The

part l t-is screwed into," or OtlIQIWlSQIGIDOV 4 ably secured to, the tube 17, which is formed integral with and a part of a casting 18.

The tube 17 has a flaring opening 19 at its top. The casting 18 is circular in form-and is provided with an upwardly extending annular flange 20, screw-threaded on its intenor and engaging the lower endof a cyl inder 21, in which the volatilization takes place. This cylinder 21 isprovided with an I inlet tum 22 aiid an outlet tube 23, through which pass the products of combustion from the engine, or, f desired, any other suitable means may be employedfor heating the iiiterior of the cylinder 21.

24 represents an extension on-the side of the cylinder 21, which open to the air, and a spire casting makes a spiral passage leading from, the part2a upwardly into the large tube 26, whichcommunicates directly with the engine, this spiral passage being shown in Figs. 2 and at.

28 the part closing the upper part .of the cylinder 21, it being made in one piece with face )late'33.. )rovided with an ooenin 34- which may he closed by a flap valve .5,

27 represents one wall of the passage, and

which valve works inwaf dly, as indicated in dotted lines in Fig; 2.

36 represents a projecting arm firmly fastened to the valve 35, to which is pivoted the curved operating lever 37, which is monntother arm 45. On a pin 46 on the outer end of the arm 45 is mounted an arm 47, having pin 48 on its inner end, the end of the arm 47 contacting with the lever or arm 40. The arm 44 of the bellcrank lever has 0nd end i upturned, as shown at 49, and through this passes a screw.rod 50, whose posit-ion canbe adjusted by a screw 51. To the end of the screw rod 50 and to the pin 48, is attached aspiral spring 52, which opposes the inward motion of the flap valve 35 and tends to keep it normally closed. The arm 44 has upon it a projecting car, through which I passes a screw 54, provided with a nut 55,

said screw working in the slot 42. By this construction, the bell crank lever can be adjusted, as indicated in dotted lines in Fig. 2, and fixed in any desired position.

56 represents an ear carried by the arm 7 47 ofthe bell crank lever, and to this ear is fixed a' cord or rod 57, leading up to some point near the operator.

It is obvious that by the construction shown, the spring 52 normally tends to keep the flap valve 35 in a closed, position, the

suction. caused by the movement of the en gine piston being great enough to overcome the tension of the spring 52, admitting, through the auxiliary air opening 34, an additional supply of air, which is mixed with the already vaporized'charge of fuel mixed with air, in the tube 26.

To vary the tension of the spring 52, it is merely necessary to move the bell crank lever and fasten it, by means of the screw' 55, in any desired position on the quadrant 41; This will bring the end of the lever or arm 47 into. a different position relatively to the arm 40, thus increasing the effective tension of the spring, which, acts on the arm 40 farther away from its pivot pin 38.

v In Fig. 5, a modified form of removable air'no zzle is shown, consisting of a cylinder 14?, screwing into the lower end of a tube 17. Through the perforated end of the cylinder 14 passes a fuel inlet tube 7 for the fuel, similar to the tube 7. lfi -represents inclined, tangentially arranged air inlets,

but the part corresponding to the part- 15, in I Fig. 1, is omitted.

' The operation is as follows The engine being in motion and the throttle valve 31 being open, a charge of air is drawn in through the inclined tangential inlet, 16 in the form of a vortex, which at the same time I tube 30, and the heavier parts being thrown outward by centrifugal force, strike thetube 30 and are immediately vaporized. The carbureted air then passes up through the tube 26 to the engine, an additional sup ply of air, if needed, being drawn in through the opening 34. In starting the engine, during the cranking operation, the'valve 35 is kept closed by pulling upon the cord or rod 57.

By the construction described, the auxiliary air supply is completely under control; the volatilization of the fuel is completely effected, and the drops of unvaporized particles being thrown out against the cylindrical tube 30.

Providing the carbureter with removable nozzles controlling the initial air supply, it is possible with one apparatus to meet all sorts of varying conditionsof the motor.

The arrangement whereby a vortex is caused during the volatilization of the fuel, 1

throwing the heavier parts to the outside by centrifugal force, is an especial advantage, especially when considered with a tangential auxiliary air inlet.

The arrangement of the tension spring and parts connected thereto is also of especial importance. By the construction shown, the improved adjustment of the auxiliary air supply permits an adjustment of the tension on the valve for both high and low speeds, at the same time making itcorrect for all intermediate speeds.

The difficulty heretofore met with in connection with automatic carbureters is due to the fact that it has been difficult and almost impossible to produce a spring correctly proportioned to the various speeds. An increasing spiral spring is commonly used. While this might be (:01 ct for some motors, it is not adjustable in the true sense of the word. Great difliculty is experienced in properly calibrating a spring of the increasing spiral type, whereas with the plain spiral type this is a simple matter, the tension being directly proportional to the distension.

Various spring devices have been .used' in connection with carbureters, but I believe 1 that mine 15 the first to produce the increasing tension in any and practically, of the adjuster.

I claim 1. In a carbureter, the combination of a fixed ratio, mechanically and within the observation casing provided with a fuel inlet and with tangential air inlets,

casin said casing being provided with an means for heating said.

opening forming a secondary air inlet, a valve for closing said opening, a spring DOL' mally holding said valve closed, and conned tions acting. to mechanically produce any desiredinerease in thetension of the spring ,controlling the movement that is at all times limited or fixed in. magnitude, substantially described.

2. In a carbureter, the combination ofa fuel tank, a casing throu h which a heating fluid is passed, a pipe lea ing from said tank into said casing, and a removable nozzle provided with inclined tan entially. arranged inlet openings, said nozz e being secured to 4 asdescribcd.

the lowenend of said casing, substantially crease in the tension of said spring controldaily as described.

ling a movement that is at all times limited or fixed in" magnitude, andnieans for positively closing said valve when desired, substan- 4. In a'carbureter, the combination of a casing composed of two parts, through one of which the. fuel charged air passes, and

through the other of which a heating agent passes, a removable dir nozzle provided with inclined tangentially arranged inlet. openings, said nozzle being secured to one (if said parts, a fuel tank having a discl'iarge pipe in proximity to said inlet openings, partilions forming a spirally arranged air passage for furnishing an additional. supply or air, a valve normally closing one end of said passage, :1 spring, connections between said spring and said valve whereby the spring holdssaid valve normally closed, said. con

nections being adjustable and ca able of be in fastened in several possib e positions,

su stantially as described.

5; In a carburetor, the combination of a casing, a tube centrally arranged therein, inlet and outletpipes connected to said casing for the conduction of a heatin fluid therethrough, anair' nozzle provide inclined, tangentially arranged inlet openings, said air nozzle being connectedto said casing, fuel tank, and a tube delivering. from said tank into said air nozzle, a tubecentrally passing through said casing, partiwith 1 tions forming a spiral inclined passage for the admission of an auxiliary air current,

a valve for closing said passage, a sprin normally tending to holdsaid valve clos and connections for varying the intensity 'of said spring, including a bell crank lever, an arm pivoted on said lever, to which arm 'one'end of said spring is attached, a lever said lever is rigidly fixed, and a curved lever attached to said pin and to said valve, substantially as described.

tl/In a carbureter, the combination of a.

central casing with a tube centrally arranged therein, inlet and outlet pipes for theconduction of a heating fluid through said casing, around said tube, an air nozzle centrally and removably connected to the lower end of said casing, a fuel. tank, a pipe deagainst which said arm bears, a pin to which livering from-said tank into said air nozzle,

partitions f0III11Il a spirally inclined pas sage for an auxi iary air'supply, a valve adapted to close said passage, :1 spring, and

connections between said valve and said spring, whereby said spring normally tends to close said passage, said connections bein provided with means for adjusting the ten-' .sion ofsaid spring in a regular ratio, and a pipe provided with a throttle valve connected to said casing, substantially as described,

In testimony whereof, I' aiiix my signature, in presence of two witnesses.

HENRY M. REICHENBACH.

Witnesses: I l a Y Louis Fnninnne.

7 Don Conn.

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