US958897A - Carbureter. - Google Patents

Description

J. W. SNEDEKER.

GARBURETER.

APPLICATION FILED JUNE 6, 1907. 958,897. Patented May 24, 1910.

2 SHEETS-$151331 l.

inventor J. W. SNBDEKER.

UARBUEETEB.

APPLICATION FILED JUNE 6, 1907.

Inventor 2 SHEETS-SHEET 2.

Patented May 24, 1910.

witnesses I M w 5 V e n t o t t R.

' UNITED STATES PATENT OFFICE.

JAMES W. SNEDEKER, OF ADRIAN, MICHIGAN.

CARBURETER.

Specification of Letters Patent. Patented May 24 1910, Application filed June 6, 1907.

Serial No. 377,532.

To all whom it may concern: I

Be it known that I, J Aims \V. SNEDEKER,

'Michigan, have invented certain new and useful Improvements in Carbureters; and I do declare the following to be a full, clear,

. and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of'reference marked thereon, which form a part of this specification.

This invention relates to carbureters for internal combustion engines, and consists in the construction and arrangement of partsv hereinafter fully set forth and claimed.

The object of the invention is to produce a constant level carbureter of simple and compact construction, wherein the arrange ment is such as to enable a proper mixture to be obtained at all times, and wherein provision is made for concentrating the current around ;the gasolene nozzle in the air passage way and directing the air blast forcibly by said nozzle to produce the proper :atomizing efi'ect as required when starting,

especiallyin a low temperature. Provision is also made in my improved carbureter for exposing a large surface of gasolene to the action of the air, thereby insuring proper vaporization.

The above object is attained by the structure illustrated in the accompanying drawings, in which Figure 1 is an elevation of a carbureter involving my invention. Fig. 2 is a plan view thereof. Fig. 3 is a horizontal section as on line 3-3 of Fig. 1. Fig. 4 is a central vertical section through'the float and carbureting chambers and through the throttle and regulating valves as on line 4-4.- of Fig. 2'. Fig. 5 is a sectional View through the lower portion of the carbureting chamber forming the air intake port, the stand pipe or gasolene supply nozzle being in vertica section. Fig. 6 is a plan view of the structure shown in Fig. 5. Fig. 7 an elevation of the perforated evaporatzng cone down which the gasolene is adapted to flow. Fig. 8 is a lan view of Fig. 7. Fig. 9 is an elevation o the adjustable sleeve, and of the Strangle tube at the lower end thereof which embraces the upper end of the gasolene supply nozzle.

Referring to the characters of reference, 1 designates the body of the carbureter which is tapering in form and in which is located' the carbureting chamber 2. At the bottom of the body of the carbureter is the air intake port 3 and crossing said port within the carbureting chamber is a bar 4; from which rises the centrally disposed gasolene supply nozzle 5 having a passageway therethrough which communicates with a horizontal passage-way 6 in .one end of the cross bar 4. Communicating at one end with the passage-way 6 is a pipe coupling 7 to the outer end'of which is connected an elbow 8 which is in turn connected to the bottom of the gasolene reservoir 9, in which is formed a passageway 10 that communicates with the elbow and with the coupling 7, thereby establishing communication between the reservoir and the 'gasolene feed nozzle.

Within the reservoir is a suitable float 11 carrying at its upper end a stem 12 to which is attached a ball valve 13 which lies in a chamber 14 in the fitting 15 screwed into the top ofsaid reservoir. Formed through said fitting and communicating with the chamber 11 is the gasolene supply passage-way 16. lVithin the upper end of the chamber 14: is a valve seat 17 against which the valve is carried as the float is raised by the inflowing gasolene, thereby cutting off said flow until the float falls sufiiciently to open said valve. By this arrangement the gasolene in the reservoir is maintained at a constant level which level is about on a plane with the upper end of the feed nozzle within the carbureting chamber. I

Formed upon the cross bar 4 is anintegral ring 18 which is threaded and onto which is screwed the base of the cone 19 which stands centrally within the carbureting chamber and the taper of whose wall coincides with the tapered wall of said chamber. The cone 19 is truncated and is seated over the feed nozzle 5, the upper end of which passes through the upper end of said cone. The

position of the cone within the carbureting chamber is such that a portion of the air which enters through the port will pass into said cone and a portion will pass around it, as shown by the arrows in Fig. Formed through the wall of the cone are a number of. apertures 20 which are not straight through thewall of the cone, but are inclined as shown, the outer ends of said apertures being lower than the inner tends thereof. Encircling the cone from the top to the bottom is a spiral flange 21 which serves to prevent the gasolene flowing down one side ofthe cone under conditions where the carbureter may for some time be standing at an angle, said flange'serving to form a spiral way down which the gasolene may pass in its travel from the top of the cone to the base thereof. At the base of the cone is a saucer 22 into. which the gasolene flows and from which any excess or gasolene may be .vaporized by, the current of air passing through the carbureting chamber. The up per end of the feed nozzle is concave'd, as shown at 23, forming a seat for the point of the regulating valve 24 which passes downwardly througha sleeve 25' screwed through the top 26 of the carbureter, said valve being threaded in said sleeve for the purpose of.

adjustment. Formed upon the lower end of the sleeve 25 is a flaring tube 27 of greater diameter than the upper end of the feed nozzle and surrounding said nozzle below the upper end thereof, the lower end of said tube standing adjacent to the upper end of the cone. By adjusting said sleeve through the medium of the screw threads 28 thereon, the tube 27 may be raised or loweredto vary the area of the opening 29 between its lower end and the upper end of the cone.

Above the carbureting chamber is a cham ber 30 into which the explosive mixture passes and with which the pipe 31 communicates that leads to the engine cylinder, not

shown. Dividing the chamber '30 from the carburetin chamber is a disk 32 havinga number 0 1 apertures 33 therethrough, said disk 32 closely embracing the tube 27 Mounted upon the disk 32 and also embracing the tube 27 is a rotary throttle 34: having apertures 35 therein adapted to be made to register with the apertures 33 in the disk 32 by arotation of said throttle. A movedisk may be partially rotated for the purposebefore described. To cover the 37 through which said lever. passes, the throttle 1sk is provided with abircular flpiige 38 which: lies against the inner wall 0 I e chamber 30 over the slot 37 andis of such length as to always cover said slotted opening no matter in what position the throttle disk may be laced.

For the purpose'o regulating the feed of.

p n g.

the gasolene in accordance with the area of bar 43 to which may be attached a rod leading to any desired point. By a movement of the bar 43, the lever 36 may be swung to vary the opening through the throttle, which operation will at the same time*swing the lever 40 to turn the regulating valve 24 and thereby adjust the flow of gasolcne in accordance with the volume of air passing through the throttle so that the mixture may be maintained uniform.

It will be noted that the upper end of the tube 27 is provided with openings 44 above the throttle disk, the purpose of which is to allow a limited flow of air through the tube 27 when the throttle is closed.

In the operation of this device at each inspiration of the engine, a strong current of 'air will be created through the carbureting chamber, the chamber 30 and through the pipe 31 to the engine. This rush of air through the carbureting chamber will create a partial vacuum therein which will cause the gasolene to flow from theupper end of the feed nozzle and trickle down upon the cone, being directed by the flange 21 in a spiral path around the cone and being subjected in its downward course to the action of the small currents of air which pass outwardly at a downward angle through the apertures 30, whereby the gasolene is readily vaporized and carried with the air current in the form of an explosive mixture into the engine cylinder. 7 Any excess of gasolene not va orized during its passage down the cone, wi l be retained in the saucer 22.

When starting an engine on a cold day, it

' is often diificult to vaporize. a sufiicient quantity of gasolene to fi l the cylinder with an exlosive mixture. To overcome that diflicuft the throttle is closed so that the only pass for the air from the carbureting cham r is through the lower end of the tube 27 around the -topof the cone, and out the apertures 44 in said tube above the throttle disl'ny adjusting said tube the ogn ng 29 between its'endand' the cone ma ulatedso thaton an inspiration 0 the en gine,-. the air will be drawn throu h sa d opening,with great. velocity, where, at 13 caused to'take up the gasolene from e and of the nozzle and atomize it, insurm the entrance into the cylinder of a 'su cient charge of explosive mixture zto'give the-en gi-ne the requiredpimpulse. After the engine shall have attained some speed, the throttleis-opened such distance as may be required to supply the en 'ne with a ful charge. I Having thus y set forth my invention,

what I claim as new and desire to secure by Letters Patent, is a 1. In a carbureter for explosive engines, the combination of a carbureting chamber, a gasolene feed nozzle extending vertically into said chamber, means for maintaining the gasolene in said nozzle at a uniform level, a hollow, perforated cone through which air may pass, said cone extending into the carbureting chamber free from the wall thereof and around which the air is adapted to pass, said cone surrounding said feed nozzle from the apex of which said nozzle projects and onto which gasolene from the nozzle is adapted to flow, a receptacle at the base of the cone for the surplus gasolcne and means for regulating the flow of gasolene through the nozzle.

2. In a carburetor, the combination of the carbureting chamber, a feed nozzle standing therein, means for maintaining the asolene at a uniform level in said nozz e, a truncated cone surrounding the nozzle through the apex of which the nozzle projects, means for regulating the flow of gasolene through the nozzle, and means for directing gasolene in a spiral path around said cone. V

3. In a carbureter, the combination of a carbureting chamber, an air intake passa e below said chamber, a gasolene nozz e standing in the carbureting chamber and connected with a source of gasolene supply, a hollow cone within the carbureting chamber surrounding said nozzle and from the apex of which the nozzle projects, said cone having apertures therethrough which communicate with the air passage and with the carbureting chamber, an adjustable tube embracing the upper end of the gasolene nozzle, and means for directing the air passing through the carbureting chamber wholly through said tube.

4. In a carbureter, the combination of the carbureting chamber, a gasolene nozzle standing therein, a done within said chamber embracing the nozzle and onto which the gasolene is adapted to flow, means for regulating the flow of gasolene through the nozzle, a tube embracing the upper end only of said nozzle and standing adjacent to the wall of the cone at the upper end thereof, and means for directing the air current passing through the carburetor exterior to the cone upwardly along the surface of said cone and wholly through said tube.

5. Ina carburetor, the combination of the carbureting chamber, a gasolene feed nozzle standing therein, a cone embracing said nozzle onto which thegasolene is adapted to flow, an educt pipe communicating with the carbureter through which the explosive mixture is adapted to pass, means for regulating the passage of air from the carbureting chamber to said pipe, a tube above said cone freely embracing the gasolene nozzle atits lowerend and communicating at all times at its upper end with said educt pipe.

6. In a carbureter for explosive engines, the combination of the carbureting chamber, a gasolene feed nozzle standing therein, a cone embracing said nozzle onto which the gasolene is adapted to flow, means for regulating the flow of gasolene through said nozzle, a throttle for controllingthe passage of the carbureted air from the carbureting chamber, a tube passing through the throttle open at its upper end and at'its lower end embracing'the gasolene feed nozzle adjacent to said cone.

7. In a carbureter, the combination of a carburet'ing chamber whose walls are tapered, a gasolene feed nozzle standing therein, a coneembracin said nozzle and onto which the gasolene is adapted to flow, said cone being spaced from the wall of the carbureting chamber and having its surface substantially parallel with said wall, said cone being hollow and perforated and so positioned as to permit of the passage of air around said cone as well as through it, a

tube freely embracing the upper end only of the gasolene nozzle, the lower end of said tube standing adjacent the apex of said cone.

In testimony whereof, I sign this specification in the presence of two witnesses.

JAMES W. SNEDEKER. Witnesses:

GEO. K. BENNETT, F. E. Ossooo.

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