US973877A - Carbureter. - Google Patents

Description

B. N. PIERCE.

GAEBURETER.

APPLICATION FILED SEPT. 19, 1907.

L T E E E H. T E I B 2 WITNESSES:

INVENIZOR ATTORNEY.

B. N. PIERCE. GABBURETEB.

APPLIOATIOH FILED SEPT. 19 1.901. 973,877. Patented Oct.25, 1910.

2 BKEET8-BHEET 2.

WITNESSES: 11v vEN TOR.

ATTORNEY.

. UNITED STATES PATENT OFFICE...

BURT NEULON PIERCE, OF INDIANAPOLIS, INDIANA.

CABBURETER.

' of Indianapolis, county of Marion, and State of Indiana, have invented'a certain new and useful Carbui-eter; and I do hereby declare that the following is a. full, clear, and exact description thereof, reference being had to ltheaccompaiiying drawings, in which like letters refer to like parts.

' The object of this invention is to improve "fthe construction of carbureters for use in connection with gasolene engines and the like;

The chief feature of the invention consists i i-the provision of a wing valve within the mixingcha'mbcr', located in close proximity tothe fuel inlet and extending across said .mixing chamber, which valve is actuated automatieallybythe suction from the engine, and-when thus actuated, the generation 0f gas'will be increased in proportion to the movement of the wing valve from normal position, as such movement of the wing valve increases tliepassage-way and, therefore, the efie'ct of the suction of the engine in bringing air, and gasolene or other fuel into the mixing chamber. Therefore the volume of "gas created by theca-rbureter is immediately 'cordance with its needs.

controlled within reasonable limits by t e suction of the engine in ac- Vhen the wing 'val 've is actuated thus by the suction of the engine, the lower part nearest the fuel inlet.

is movedback of the fuel inlet so that the fuel inlet will be on the suction side of the valve and thus the fuel supply in thei'nixing chamber be proportionately increased. Like- .wise the upper and larger part. of the valve is swung open so. as to increase the passagecombination of 'the wing valve and the this combination is throttle valve whereby the person di'ivin (Y "the engine can modify, change or coi ti'dl largely the efiect of the suction of the en ne upon said wini valve. The' result of t at the speed of the engine, from the: highest speed to the very owest speed, can'be wholly controlled by these two valves. And this is true in the of automobiles and motor boats even when the transmission gearing is at its highest. a

Another in constructing the carbureter of two cylinzdrica-l parts that will keep them clamped toone side of said feature of the invention consists gether wheieby the carbureter can be easily combined with the engine and with the gasolene supply in whatever be located. '-It adapts t e carbureter for ready use in connection with any engine.

Another feature of the invention consists in counterbalancing the irregular actions of the float upon the gasolene supply valve by a spring, whereby the action of the valve will be rendered more uniform especially when the float is shaken or tilted suddenly.

These and the other features of the invention will beuiiderstood from' the accompanying drawings and the following description and claims.

In the drawings Figure 1 is a side elevation of thecarbureter. Fig. 2 is a'eentral vertical section tlieretlirough, the changed position of the wing valve being shown in dotted lines. Fig.3 is a central vertical section through the fuel inlet to mixing chamber, the same being shown upon an enlarged scale and parts broken away. Fig. 4-is a plan view "of the device. Fig. 5 is a side eleposition they may Specification of Letters Patent. Patented 0 1; 25 191() Application flied September 19, 1907. Serial No. 398,627.

vation of the u per removable portion of the device, parts eing broken away. Fig. 6 is a central vertical section of the device on a line at a right angle to the section shown in Fig. 2.

' This device consists essentially of two parts, a bowl 10 for the gasolene and float, and a shcll 11 forming the mixing chamber and carrying the adjacent parts. These two are separable and removable and one turns upon the other to any desired position. Thus the bowl 10 is substantially in the sha )e of a cup with a rim symmetrically and cy indrically formed and with a thickened portion 12 centrally located in the bottom thereof with a central vertical 0 eiiing therethrou' h. To

ody' 10, positioned what like the handle of a cup, a casing 13 is provided with a vertical gasolene inlet port 14' that is closed by a valve 15, somewhat somelike aneedlevalve,- that is mounted with a is fulcrumed on a pin 18, the long end of said lever being secured 'to an annular float 'pivot 16 on the short end of a lever 17 that controlled by a spring 20 on an extension 21 from the valve'15, the tensionof said spring tension 21. A cap 23 closes: an opening 20 being regulated by a .nut-22'on said ex;

reiiiovailofthe ca 23. The gasolene supply is brought ,to t e device through the niple 24. Thus-it is observed that the irreguarities in-the movements of the float 19 are controlled, steadied, and largely overcome by the action of the spring 20 'on the short end of the lever 17, said spring'tending to hold the valve in its normal position.

The shell 11 is semispherica-l on its undersideand provided with a cylindrical peripheral flange 25 that fits snugly upon the top of the bowl 10. Centrallyfrom the lower end of said bowl there is a downward tubular extension 26 that passesthrough the opening in the enlargement 12 in the bottom of the bowl. and said extension 26 1s threaded on its outer end for a nut 27 whereby said two parts 10 and 11 may be drawn and held tightly together after adjustment. The shell ll. which forms the mixing chamber has additional parts 'or members 30 and 31. secured by bolts 32. said parts being turned somewhat L-shaped and attached at an angle to said shell so that the position of said added members may be altered to assist in the fuel supply and then the shell 11 turned on said bowl 10 to any desired position to accommodate its connection with the engine, and when thus adjusted, the nut 27 will tighten and hold said parts in place. Likewise the air inlet can be turned towardthe engine so as to getwarm air.

The tubular extension :26 from the lower end of the. shell '11 is provided with a pair of oppositely located ports 35 for the admission of gasolene from the bowl 10. A tape?- ing fuel inlet nozzle 30 is screwed into the upper end of the tubular extension 26 so as to project. up into-the mixing chamber in the shell 10. The port thercthrough closed by a needle valve 37 that at its lower end is screw-threaded to fit and screw through an internally threaded nut 38. There is also 'a waste tube 39 extending down'through the extension 26 and parallel with the valve St9llt'37. the upper end of said waste tube 2''!) extending above the bottom of the shell 1t to a point slightl below the up )er end of the nozzle so as to form a puddle chamber about the fuel inlet in which there will be fluid standing up almost to the upper end of the nozzle. This is a matter of considerable importance inthe etlectivc operation of the device that lea vcs in ita priming charge.

'ithin the mixing chamber of the shell ll-and immediately over the fuel inlet, a wing valve 40 is mo' 'nted on a transversely extending 'shaft 4] see Fig. 6, which has bearings in the shell and one end extends outside the shell and carries an arm 42 against which .a spring l3 acts. Said spring is mounted on the end of arm -12 and its tension is adjustable by a screw ii that extends through a projection outside the shell 11, whereby the normal vertical position of the wing'valve 40 is maintained; and its moveinent is limited by the stop 62 engaging the projection 63 on the outside of the shell.

The upper part of the wing valve is ,ofconsiderably greater area than the lower' part, as appears in Figs. 2 and 6, so that under the influence of the suction of the engine the upper partof the valve will be drawn toward the gas outlet, that is into the dotted lineposition shown in Fig. 2, the extent, of oscillation, however, of said valve depending upon the forcefulness of the suction of the engine. when thus drawn by suction into an inclined position, it turns the lower part of the valve baclnvard away from the fuel inlet so the fuel inletwill be on the suction side of said valve and give the suction of the engine greater power by way of dra\v-' .ing in fuel through said inlet; At the same ated so that the gas creation will beara uni form relation with the demand for gas. and thus render the carbureter peculiarly automatic. v a

'hile the wing valve 40 is directly and solely controlled by the suction of the engine and in that sense is the same as automatic, still the effect of the suction of the engine upon said-.7 valve is controlled largely by the throttle valve 50, which is on the shaft 51, and is actuated by the throttle lever 5:2. In other words. when the throttle valve is open, it is obvious that the etl'ect of the suction of the engine upon the wing valve 40 may be increased. This wing valve construction cooperating as explained with the throttle transmission mechanism is in a high gear, I

the "(fliefxliiOll of gas with this carbureter can be so reduced and minimized that the automobile will move at the slowest possible speed. In oi words, without changing t to gear on [he automobile, its speed can be regulated from the slowest possible moves ment to the greatest speed with ease and abslow speed without stopping the engine or changing the gear, and this constitutes the chief feature of the invention.

to secure by Letters Patent is:

1.' A carbureter including a shell forming a gas chamber with an air inlet opening sub-- stantially at one side and a gas outlet 0 ening substantially at the other side, a fuc 1nlet between said air inlet and gas outlet 'openings, and a spring-controlled rocking valve mounted oversaid fuelinlet in position to substantially close said chamber, the major portion of said valve lying on the side of the fulcruin thereof opposite said fuel inlet, whereby the suction of the engine will automaticallyturn the larger portion of said valve above the fulcrum thereof toward the gas outlet and ,the smaller portion behind the fuel inlet end and thus increase the effect of the suction upon the fuel inlet.

2. A earbureter including a shell forming a gas chamber with an air inlet opening substantially at one side and a gas outlet openin substantially at the other side, a fuel in ct between said air inlet and openings, and a spring-controlle rocking valvemounted over said fuel inlet in position to substantially close said chamber, the major portion of said valve lying on the side of the fulcrum .thereof opposite said fuel inlet, whereby the suction of the engine will automatically turn the lar er portion of said valve above the fulcrum thereof toward the gas outlet and the smaller portion behind the fuel inlet and thus increase the effect of the suction upon the fuel inlet, and a throtthe valve between the gas outlet and said rocking valve for modifying the effect of the suction of the engine upon said rocking valve.

- 3. A carbureter including a shell forming a gas chamber with an air inlet opening substantially at one side and a gas outlet open- Vl'hatiI claim as my invention and desire.

as out let in substantially at the other side, a fuel inlet nozzle projecting upwardly through the bottom of said shell and between said air inlet and gas outlet openin a shaft mountedin said shell and extending transversely through said gas chamber and over said fuel inlet nozzle, a wing valve secured to said shaft so as to be normally vertical over the fuel inlet and with the art thereof below the fulcrum being partiall y cut away so that it will'be smaller than the art of said valve above the fulcrum thereo a spring acting on said shaft tending to prevent the movement of the upper part of said valve toward the gas outlet, and a stop for limitiu the' return movement of said valve and he din the same substantially vertical over sai fuel inlet nozzle, whereby the valve can be actuated .by the suction of the engine and then said fuel inlet nozzle will be on the suction side of the valve, substantially as set forth.

4. A carbureter including a asolene bowl,

' with a cylindrical open top an with a central o )ening through the bottom thereof, a shell or forming the gas-creating chamber adapted to fit upon and extend down into said bowl and with a tubular v extension therefrom through the opening in the bottom of said bowl, which extension is threaded on its outer end, a nut on the outer end of said extensioirwhereby said parts may be adjusted and held in relativepositions, a fuel inlet passage way from the bowl through said extension into the chamber within said shell, a valve in said extension and operable from the outside for closin said fuel' inlet port, and a waste tube lea ing from the chamber within said shell, said waste tube extending above the bottom of the shell to a point slightly lower than the upper end of the nozzle.

In witness whereof, I have hereunto af fixed my signature in the presence of the witnesses herein named.

BURT NEULON PIERCE. Witnesses:

Ouve Bin-moan, N..Am.xnonc.

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