US1050059A - Carbureter. - Google Patents

Description

J. H. GOULD.

' GARBURETBR.

APPLICATION FILED MAY Z6, 1.909.`

Patented Jan 7,1913

2 SHEETS-SHEET 1.

J. H. GOULD.

GARBURBTBR. APPLIAT-ION FILED MAY 26, 1909. 1,050,959, Patented Jan?, 1913.

I 2 SHEETS-SH-EBT 2.

Pny. 4. Fay. J.

Witness es. Innen/n' 5.6i y om segg.

UNITEDv` STAIFS PATENT GFFICE.`

JOH H. GOULI), OF PLYMOUTH, ILLINOIS, ASSIGNOR T0 ALFREDO. STEWART, OF LOS ANGELES, CALIFORNIA.'

CARBURETER.

Specification of Letters Patent.

Patented Jan. '7, 1913.

To all whom 'it may concern.'

Be it known that I, JOHN H. GOULD, a citizen of the United States, 'residing at Plymouth, in the county of Hancock and State of Illinois, have invented a new and useful Improvement in Carbureters, of which the following'is a specification.

This invention 'relates more particularly to that type of carbureters for internal combustion 'engines in which'the supply of the explosive mixture to the engine is automatically regulated in accordance with the needs ofthe engine by a device which is operated by the suction of the engine. v

The. object s .,of the invention are to produce an efficient carbureter of very simple and practical construction, in which the feed of both the air and theofuel or hydrocarbon are automatically regulated in accordance with the speed of the engine, whereby a mixture of the proper proportion of air and the volatilized fuel is supplied to the engine at all speeds thereof ;4 also to so construct the carbureter that t-he air and fuel- 'regulatingvalves ordevices are combinedin a single movable unit or part without intermediate joints or connections, thereby greatly simplifying the construction of the carbureter and reducing the number of its working parts; also to provide an air-regulating valve which is operated automatically bythe suction of the engine and has a fuel supply passage through which the fuel is drawn by the suction of the air past the valve; and Aalso to improve carbureters of this type in the respects hereinafter described and set forth in the claims.

In the accompanying drawings, consisting of two sheets :cV Figure 1 is a sectional elevation of a carbureter embodying the invention. Fig. 2 is a plan view thereof. Fig.-3 isa sectional plan thereof in line 3 3, Fig. 1. Fig.4 is a side elevation thereof. Fig. 5 is a fragmentary sectional elevation of a carbureter of slightly modified construction. Like reference characters refer to like parts in the several figures.

Gasolene is the fuel ordinarily used in the carburetor and the term gasolene alone will be employed in this, specification for the sake of brevity, without, however,l

intending thereby to restrict' the use of the carburetor to thisparticular'fuel.

A representsa'gasolene chamber, B an Vairl and gasolene vmixing chamber, and C air ;v

inlet openings in the carbureter casing between gasol'ene and mixing chambers. The casing conveniently consists of a lower sec-v tion a which forms the gasolene chamber A,

an intermediate section a .which has a de- 60 tachable screw connection with the `top of thelower section, and an upper section a2V -which is corinected by a screw coupling as to the intermediate section. Theintermediate section c has a' reduced waist portion 65 which forms a seat a4 for the air admission anducharge regulating valve, the air inlet openings- C being provided in this section below the valve seat at. The portion of this section above the valve seat a4 flares or-in- 70 creases in diameter upwardly and together with the upper section a2 of the casingl forms v the mixing ,chamber B.. 'The described con-l struction of the casing is desirable, but the casing could'be'of any other suitable con- 75 struction. The pipe leading to the engine is attachedv to the upper end of the casing and communicates with the mixing chamber through a discharge'or outlet' passage D,

which is controlled by a throttle valve@ of any usual or suitable construction. Q

E represents the combined air admission and charge regulating valve which is ar# ranged to move vertically "in the mixing chamber and, wheninactivefto rest on the seat a4 formed by the reduced waist of the intermediate section of the casing. This seat and the coperating faceofthe valve are preferably tapered or frusto-conical in shape. pends into the gasolenechamber A',through a guide bearing e" in the latter, andl is hollow or is providedwith a passage (iz-Which connects with one or more disehargeducts c leading through the body ofthe valve to i the periphery thereof, preferably tothe face thereof which rests on theva ve seat. When the valve is seated it cuts o the admission of air through the inlet openings C to the,

' mixing chamber andalso closes the gasolene 100 ducts es so as to cut off the mixing-chamber from 'the' gasolene chamber. The valve E 1s lifted 0E of' its seat bythe suction of the 'engine .when the latter is working,l and air is thus admitted into the mixing chamber. .105

The gasolene is -sucked up from the gasolene chamber throughthe passage e2 and discharge ducts e3 by the flow of the air around the valve past the ducts e", and is commingled with the air in the mixingchamber The valve has a stem ev which de- 90 I to produce the explosive mixture.Y The valve times, a relatively stationary needle valve `F is arranged in the passage@2 of the gasolene nozzle and this passage is made taperf ing. This gasolene valve F obstructs the nozzle less or more and consequently admits Vmore or less gasolene to the mixing chamber accordingly as the automaticvalve is moved -arther from or nearer to its seat to increase or decrease the supply oit air. The gasolene valve F has a screw-threaded shank f which' passes through a nut f in the bottom of the gasolene chamber A and is provided at its outer end with a handle for turning it to initially adjust the valve as may be necessary to properly regulate the feed of the gasolene. If desired, the gasolene valve F can be connected to its shank f by a universal joint f2, as shown in Fig. 5, to 'make the valve self-centering in the nozzle.

By the described construction and arrangement of the automatic valve, the air l is drawn pastthe valve, immediately around the gasolene discharge orifices thereof, regardless of the position of the valve, which insures an adequate supply of the gasolene to the air under the varying suctions produced by the engine.

The automatic valve is preferably made of such weight that it will maintain a suitable velocity of airpast it and past the fuel ducts to insure a uniform mixture and steady action of the engine and to seat itself without the use of a spring. In operation, for any given demand of the engine, the valve will automatically lift sutilciently to give the engine the requisite charge, z'. e., until the pressure above it plus.

its own weight, will approximately equal the atmospheric pressure below it.

In the construction shown in Figs. l and 3, the valve stem e is provided withy external helical threads G and the guide'bearing e lin which it works is correspondingly threaded, which causes the valve to rotate in its up and down movements, thus mall:- ing its movements steady and gradual and preventing a jerky action thereof. If preferred, however, the valve stem and its guide can be made smooth., as shown in Fig. 5, and any suitable means for dampening or checking the movements of the valve can be ernployed.

I-I represents a valve operated by a oat I and controlling the supply of gasolene to the carburetor for keeping it at a constant level in the gasolene chamber A. In

intente the construction shown, the float is annular and located in the gasolene chamber A sur- Y rounding'the gasolene nozzle, but this c0nstruct-ion is not essential and the float could be arranged in 'a separate float chamber communicating with the chamber containing the nozzle, as in son/1e makes of carbureters. l

I claim as my invention:

l. In a carburetor for internal combustion engines, the combination of a casing having an air inlet, an automat-ic valve whose position is dependent upon the demands of the engine and which controls the admission .of all air to the carbureter, said valve having a ixed stem provided with a gasolene supply passage, and a valve j which coperates with said passage for regu# lating the supply of gasolene in proportion tothe supply of airfor mixture with the air, substantially as set forth. A

2. In a carbureter for internal ,combus- Ation engines, the combination of a casingl having an air inlet and a valve seat, a valve which is operated automatically by the suction'of the engine and coperates with said seat to control the admission of air to the carbureter, said valve having a Xed hollow stem provided with a passage for the gasolene and one or more ducts leading from Said passage to the periphery of the valve adjacent to the -valve seat, and a valve which cooperates with said hollow stem ot the automatic valve to regulate the supply of gasolene in proportion to the supply of air for mixture with the air, Ysubstantially as set'forth.

3. In a `carbureter vfor internal combustion engines, the combina-tion of .a casing having an air inlet' and a valve seat, a weighted valve which is operated automatically by the suction of the engine nd cooperates withl said seat to control the -adi stem oit' the automatic valve to regulate the supply ot gasolene for mixture with the air, substantially as set fort-h.

4. In a carbureter for internal combustion engines, the combination of a casing having a valve seat, an air inlet opening in the wall of the casing at one side ot said seat, and a carbureting chamber at the opposite side of said valve seat having-walls which diverge away from said v alve seat, anautoniatic valve Whose position is dependent upon the demands ot the engine and which cooperates with said seat to control the admission of air to the carburetor, gasolene supply ducts being provided which have d1ssaid tapering charge openings in immediate proximity to the peripheral portion of said valve seat which coperates with said valve, a valve which controls the supply of gasolene to said ducts and comprises a part having a passage and a needle located in said passage, one of which parts is tapered, one part of said gasolene supply valve being fixed to and moving with said air valve for maintaining the supply of gasolene through said ducts proportional to the :supply of air throughout the movement of said valve for mixture with the air, substantially as set forth.

5. In a carbureter for internal combustion engines, the combination of a mixing chamber, a gasolene chamber, a valve which is operated automatically by the engine suction and controls the admission of air to the mixing chamber, said valve having a stem with a tapering gasolene passage entering the gasolene chamber anda connecting discharge duct, and an adjustable stationary valve cooperating with the walls of passage, whereby the opening between sai passage and said valve increases -with the suction on said automaticl said seat to control the passage vof airto said carbureting chamber, said valve having a ixedstem with a gasolene. passage depending into the gasolene chamber and a connecting discharge duct lea-ding to the periphery of said valve adjacent to said `valve seat, and-a relatively stationary valve in said passage in the valve stem and coperating with the walls thereof for regulating the feed of the 'gasolene, `substantially as set forth.

Wit-ness my hand, this 22d day of May,

JOHN H. GOULD. Witnesses:

C. W. PARKER, E. C. HARD.

Images