US980668A - Carbureter. - Google Patents

Description

J. A. PAULL.

cAmsUnETLB.. x

` APPLICATION FILED JULY 20. 1909.

Patented Jan. 3, y1911.

UNITED lsTATEs PATENT oEEIoE.I

JOHN ALPHEAUS/PAULL, O IPSWICH, ENGLAND, ASSIGNOR 0F GNE-HALF T0 DIXON HEPWORTH, 0F MARINE VILLA, ENGLAND.

CABBURETEB.

Specification o! Letters Patent.

Bamm-.ed Jan. 3,- 1911.

Application led .Tuly 20, 1909. Serial lo. 508,608.

ain and Ireland, and residing at '745 Woodbridge road, Ipswich, inthe county of Suffolk, England, have invented cert-ain new and useful Improvements in Carbureters for Internal-Combustion Engines, of which the following is a specification.

This invention relates to improvements in carbureters, its obiect being to provide a carbureter adapted for use with pressure feed either from an elevated tank by gravity or by spring means.

A. further object of the invention is to arranfe the device so that it may operate in any positioninverted if desired.

The invention consists in a carbureter in which a body portion is provided withan oi] retaining chamber fed directly by oil under pressure, said chamber communieating with curved grooves in the face of the body portion and in which a rotary valve is provided with very tine perforations adapted to be moved successively over the groovesA so that oil'lodged in the grooves may be sprayed directly into the interior of the carbureter and with air ports adapted to open correspondingly with the oilperforations.

' Referring now to the accompanying drawings, Figure 1 is a sectional elevation of a carbureter according to one form of my invention; Fig. 2 is a section on the line Ae-A of Fig. 1; Fig. 3 is a plan of the top of the body portion with the valve and other parts removed in order that the curved grooves may be clearly seen. Fig. 4 represents another construction of carburetor embodying my invention. A

In carrying the invention into eiect according to the forni illustrated in the Figs.

1, 2 and 3,'I provide a body portion, a, in

which I form an oil retaining chamber, e.

To this chamber oil is led through a hole, b,

from a petroltank situated at a convenientl height above the level of the carbureter so as to provide a pressure head for feeding fuel to the chamber, e. The oil chamber, e, communicates with two curved grooves, f, extending to the turned face on the body part.' 'Each curved groove extends less than a quarter of acircle. A ainst the face of the body part a correspon ingly turned face of a valve, c, is heldvby suitable means such for example as a spring, d, act-ing on a collar, g on the valve stem, h. This s ring must be of suilicient strength to hol the valve against the face notwithstanding the suction of the engine. At the circumference of the valve there is provided an upwardly extending flange, i, which ts within a sleeve, j, secured between the fixed body portion, a., and the cap, k, to which theinduction pipe, l, is connected.l The parts, k,

j and a, may be secured together by any suitable means such for example as two or more long studs (not shown) extending from the top of the body, a, through holes vin the flange of the cap, lc, and having nuts whereby the cap is irmly clamped to the body part, the sleeve, j, acting as a distance piece. In the valve face adjacent to the body portion a number of holes, n, of a diameter corresponding to the width of the grooves, f, are drilled, these holes being arranged on arcs of a clrcle corresponding to the curved grooves. The holes, n, however are only extended about half way through the valve of the same diameter as at the under face, the remaining part of the metal being perforated by a very tine. hole, o, say about 1/80th of an inch in diameter. The sleeve, y', has formed in it two ports, m, m, the positions of which correspond with those of the grooves, f. In the ange, z', similar ports, p, are formed. In the normal inoperative or closed position of the carbureter the valve is situated so that its holes, n, o, are opposite a plain portion of the turned face, g, so that no oil can passthrough them into the carbureter, similarly the air ports, p, are closed. If now the valve be given a slight rotary movement one of the oil holes will come opposite one of the rooves, f, and the air port, p, will open sligtly. The eii'ect of'this is to produce a small quantity of -combustible mixture the oil being forced by gravity and by the suction of the engine as a Eme spray into the incoming air. If the valve be moved slightly farther still another jet will come into play by the 'passage of a hole over the other oil groove and the air port will open a little more. This operation may be repeated until the maximum delivery of oil and the 'maximum admission of air takes place. It will be understood that there are as many intermediate ported in ball bearings, 7' an any convement manner.

tary movements of the valve may be engine with greatprecision.. The cap,l lc,

is preferably provided with'4 an inwardly extending tubular part, s, against whlch the incomingi airis deiiected across the path of the jets the whole mixture being then preferably guided toward the induction pipe by a conical head, t on .the valve. port, p, is preferably of such alength (see Fig. 2) that after all the jets have been put into operation. further movement of the spindle shall aduall close olf the -jetsln succession wit outre ucing the area of the air port. f' By thisarrangement the whole of the jets may be cut o' but the maximum area of air inlet will still be maintained; This enables the richness of the mixture to be varied. The spindle is preferably supu, mounted in The carbureter may be situated in lany position or at any angle, the spindle of theavalve being supported in a manner which prevents it from tilting and the-joint at the rotary valve face may be kept petrol tight without undue spring pressure being employed. The. r0-

ven by a lever, w, or any other suitable devlce. 11n the modification of 'the invention shown in Fig. 4 of the drawings the liquid fuel, such as oil, is drawn through the eduction pipe, 7, bythe suction of the engine andpasses preferably through a strainer, 8,

. of cotton wool or the like placed within the body member, a. The oil then passes to the grooves, f, in the body member'to the holes, n, and perforations, o, in the rotary valve, c,

, which is similar to that already described feo . with reference to Fig. l; On emerging from vthe perforations o as a fine s ray the oil is carried into the chamber 10 ormed within the shell, 1, by the air admitted from the air inlet chamber, 9, through the space between the shell, l, and the upper surfaceof the rotary valve, c. The air and fuel being then thoroughly 'mixedin the chamber, 10,`

pass through openings m in the shell, 1', to an outer-chamber, 11, from whence the mixturej passes through holes p in the carbureter casing, to the pipe, 12, which leads to the combustion engine. The amount of air passing from the chamber, 9, to the mlxin chamber, 10, is regulated by they perforate shell, l, which moves vertically within the cylindrical part, of the carbureter casing,

lso as to vary the annular opening between the shell, 1, and the upper surfacey of the rotary valve, c, and thus cause the air to flow directly overA the fuel or oil inlets, o, at a high velocity. By this means the sprayed fuel 'is thoroughly mixedl withair and all .possibility of' fuel in' the solid state being The air carried over to the4 engine is eliminated. The vertical movements of the shell', 1, are effected simultaneously with the rotation of the rotary valve, c, by o erating, preferably, a singlelever, uy. This ever is provided on its 'under side with several tongue pieces, 2, which engage between similar pieces, 14, carried by a sleeve, 3, which is concentric with the spindle, le, by which the'rotary valve c is connected tothe lever, w.- The outer surface of the sleeve, 3, is formed with Va square threaded screw'of large pitch engaging with 'a corresponding screw formed internally in the cover, k, of the carbureter casing, this cover being screwed on to the casing part, By moving the lever fw in a horizontal plane when in engagement' with the spindle h, Yand sleeve, 3, the latter is caused to move vertically and when descending pushes the shell, 1, downward and thus shuts off the air supply. A s ring, 4, placed between the valve, c, and she 1,'presses. the -former on the valve face of thebody member, a, and at the same time holds the shell in contact with the sleeve, 3, or cover, k, or preferably in contact with a number of rings 6 separated by ball bearings, 5, and placed between the art, lc, and the shell, 1, so as to reduce the iction.l It Awill thus be seen that when t-he sleeve, 3, is moved upward by rotation ofthel lever, w, the-s ring 4, will cause'the shell, 1,- 'to follow the eeve and increase the air inlet openin On a 'further rotation of the sleeve, 3, an valve, c, the maximumnumber of fuel inlets, o, are opened, the shell, 1, being then at the upper limit of'its movement z'. e. the air inlet opening is at its maximum, and on further rotating the lever, w, the valve c only is moved to reduce the number of fuel inlets open while the air admission remains at its maximum. This continues as the sleeve, 3, is withdrawn from the cover, c, until the tongue pieces, 14', come into contact with the under side of the lever, w, when any further rotation of the valve, c, is prevented. It will be seen that the incoming air in the chamber, 9, warms 'the petrol in the strainer,'8, and thus assists the vaporization. The rate of flow of etrol through the-strainer can be regulated y the4 amount of compression put on the -cottonwool or other substance of which the strainer is made.l The details of the construction are evident from the illustration and need not be further described in detail.

Although in the drawings two series of fine perforations are shown, three'or more series equidistantly spaced may be'used lif,

desired according to the rate of spraying re uired.

. n important feature of the invention "is ceases I taking place directly from a tank by gravity or by pressure produced by a spring, compressed air or the'like.

It will' be seen that by the invention not only may the operator regulate accurately the quantity of mixture passing tothe engine but he may also vary the proportion of fuel to air and if desired may stop the oil flowlentirely although permitting a maximum iow of air to the engine at each of 'its suction strokes. l

Having now described my invention what I claim as new and desire to secure by Letters Patent is 1. Carbureter comprising in combination a body member, having one face thereof grooved, means for feeding oil under pressure to said grooved face, a valve in contact with said face, fine perforat-ions through said valve arranged to be brought successively over the grooved part of said body member as the valve is moved whereby a definite quantity of oil is sprayed directly into the carbureter and means for admitting air into the carbureter, these means being controlled by the movements of said valve to open correspondingly with the oil perforations.

Q. Carbureter comprising in combination a body member, having one face thereof grooved, means for feeding oil under pressure to said grooved face, a rotary valve in contact with said face, fine perforations through said valve arranged to be brought successively over the grooved part of said 'body member as the valve is moved whereby a definite quantity of oil is sprayed directly into the carbureter and means for adniit-ting air into the carbureter, these means being controlled by the movements of said valve to open correspondingly with t-he oil perforations, said controlling means after the maximum'number of oil perforations have been opened allowing said ,perforations to be closed successively while maintaining maxivmum flow of air.

3. A carbureter comprising in combination a body member having an oil retaining chamber therein fed directly with oil under pressure, grooves in a face of said body member communicating with said oil retaining chamber, a rotary valve in contact with said face said valve having fine .perforations therein arranged to be brought successively over the grooves in the face o'f said body member as the valve is rotated whereby a definite quantity of oil is sprayedv directly into the carbureter, air admission means and operating means controlling both the air admission means and rotary valve, whereby on actuating said operating means the air admission means are caused to open correspondingly with the oilfperforations.

4. A carbureter comprising in combination a body member having an oil retaining chamber therein fed directly with oil under pressure, grooves in a face of said. body member communicating with said oil retaining chamber, a rotary valve in contact with said face, an operating spindle therefor, fine perforations through said valve arranged so as to be brought successively over the grooves onthe face ofsaid body member as the valve is moved by means of said valve operating spindle, whereby a definite quantit-y of oil is sprayed direct-ly into the carbureter, air admission means and means for controlling and givingl said air admission means a vertical movement simultaneously with the rotation of said rotary valve whereby said air admission means open correspondingly with the oil perforations, and means whereby on the' maximum number of oil perforations being opened, said air admission means remain stationary with a i5 maximum opening and allow a further rotation of the valve spindle to close only the oil perforations.

5. A carbureter comprising in combination a body member having an oil retaining chamber therein fed directly with oil under pressure and grooves in a face of said body member communicating with said oil retaining chamber, a rotary valve in cont-act with said face and a valve operating spindle for said rotary valve, said valve having holes therein of a width substantially equal to that of the grooves in the body member and opening into thercarbureter in fine perforations, the holes being arranged to be brought successively over the grooves in the body member as the valve is moved whereby a definite' quantity of oil is sprayed into the carbureter, and means moving vertically on said spindle to yadmit air to the 'carbureter and change 105 the velocity -of the air as it passes over the ne oil perforations in said rotary valve, whereby on rotating said valve the air admission means move vertically on said spindle to admit an amount of air corresponding to the number of oil perforations open and on the maximum number ofA the latter being open said air admission means allow amaximum flow of air while a further movement of the rotary valve reduces only the number of oil perforations open.

6. A carbureter comprising in combina'- tion a body n ieinber, an oil retaining chamber in said body member fed directly by oil underV pressure, a strainer in said chamber, grooves in a face of said body member com municating with said oil retaining chamber,

a rotary valve in contact with said face, fine perforations through said valveV arranged so as to be brought successively over the grooves in the face of said body member as the valve is moved whereby the quantity of oil sprayed can be controlled, an a-ir chamber surrounding said oil retaining chamber, a chamber in said body member into which screw threaded spin the oil is sprayed, aV spindle for operating said rotary va ve, means admitting air to the carbureter com rising an externally e concentric with said rotary valve spindle and a valve part normally moving with lsaid screwed spindle lever means adapted to engage with both of said spindles whereby on rotating said spindles by-meas` of the lever means said valve part is moved vertically to admit an amount of air corresponding to the number of oil perforations open and on the maximum number of the latterbein open said valve part no longer moves wit said concentric l spindle whereby a maximum air admission 15 with a decreas' g number of oil perforations open is maintained.

In testimony whereof I have hereunto signed my name in the presence of two witnesses.

JOHN ALPHEAUS PAULLJ Witnesses: f

SIDNEY B. W. VINNELL, D. GARLAND.

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