US958128A

US958128A - Carbureter.

Info

Publication number: US958128A
Application number: US45519408A
Authority: US
Inventors: Albert Howarth
Original assignee: STAR CARBURETOR AND SUPPLY Co
Current assignee: STAR CARBURETOR AND SUPPLY Co
Priority date: 1908-09-28
Filing date: 1908-09-28
Publication date: 1910-05-17
Anticipated expiration: 1927-05-17

Description

A. HOWARTH. CAR-BURETEB..

APPLICATION FILED sEPInza, 1908.

Patented May 17, 1 910.

Wneases: wmexox,

A. HOWARTH.

GARBURETER.

APPLICATION FILED sBPyza, 190s.

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UNITED STATES PATENT OFFICE.

ALBERT HOWARTH, or' PROVIDENCE, EHDE ISLAND, Assrenon, BY MEsNE ASSIGN- MENTS, T STAB CARBURETOR AND SUPPLY COMPANY, .OF PROVIDENCE, RHODE ISLAND, A CORPORATION OF RHODE ISLAND.

CARBURETEB'.

Specicationof Letters Patent.

Patented May 17, 1910.

Application led September 2S, 1908. Serial No. 455,194.

To all 'whom it may comem.'

Be it known that I, ALBERT HoWAR'rH, a citizen of the United States, residing at Provi-dence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements iny Carbureters, of which the following is a speeixeation, reference being had-therein to theaccompanying drawings.

Like reference numerals parts.

Figure 1 is a side elevation of my improved carbumeter. Fig. 2 is a view of the same in central longitudinal section as seen on line of Fig. 3, the several valves being shown as fully open. Fig. 3 is a view of the same in central longitudinal section as seen online yf y of Fig. 1, said valves 'being shown as fully open. 4 is a perspective view of the' combined throttle valve andl gasolene feeding valve. Fig. 5 is a sectional view of the same as seen on line s z of 4. Fig. 6 is a side elevation of said carburetor when the valves are nearly closed. Fig. 7 is a central longitudinal section ofthe same as seen on linea a: of Fig. 3. Fig. 8 is asectional.

View as seen on line w w of Fig. 6. Fig. 9 is a side elevation of the presser bar and operating spring therefor constituting an element of my said invention. Fig. 10 is a si'de. elevation of the gasolene feeding valve constituting another element of said invention.

My invention relates to the class of carbureters and consists of the novel construction 'and combination of the several parts In the drawings the reference numeral 1 j represents the central or body portion of the carbureter comprising acase or shell, and the inner space witharn the same is the central ehamber, designated as 2. Am integzral turbe 3,`of smaller diameter opens at its bottom: into the chamber 2 and extends upwardly from: the case 1. Its upper portion has the interior screw-thread 1. The tube conducts the gasolene vapor from the carburetor to the engine. A

The ease or body 1 has an annular flange 5 integrall therewith and extending downwardly. This alan-alzar4 flange 5 has an interior Screw-thread, shown im 2, and T.

indicate like In the chamber 2 is a central vertical gasolene chamber or receptacle 6, of tubularshape. An integral feed pipe 7 .opens into the gasolene chamber or tu'be 6, just below the center thereof and extends at right angles therewith on one side.

The pipe 7 projects out from the case 1 and the yprojecting portion is screw-threadedl on its eX- terior, as shown 1n Figs. 2 `and 7. A supn ply pipe S has an interior screw-thread by adjacent thereto has an interior screvv-y thread. The lower end of said bore has a small circular opening or orifice 9, which is slight-ly enlarged concentrically, as represented at 10, and just above said enlargemont 10, the bore has the annular shoulder 11, which forms a valve Seat for a ball valve 12.

A pressure bar 13 is mounted vertically in the gasolene receptacle or tube 6, and has at its lower end la convex seat 14, by which it fits upon the ball 12. A screw 15 having a head 16, tapered on its under side to t the countersink of the gasolene tube or cham-ber 6, is in threaded engagement with thev bore of said tube and has a squared-olf end. A spiral sp1-inl 17 has a bearing at its upper end against t e.said squared-olf. end and also a bearing at its lower end against the plain end of the bar 13. Thus, by the pressure of the spring 17 the ball valve 12 is forcibly hel-d to its seat 11, when the parts of the device are in the positions illustrated in Fig. 7 as also whenever the engine is not iny operation. p

The case 1 of the carbureter on the side opposite to the threaded end of the pipe `7 has a plain face indicated by the vertical line 18- and is there perforated with a p-lurality of ports 19,. 19. A cross bar 20 `ex tends from the interior` surface off the ease 1 in a position between the ports 19, 19, to the gasolene chamber or tube 6, and is preferably integral bothwith said case and tube. The bar 20 provides a bearing 21, within which a shaft 22 is loosely mounted. The shaft 2.2 at one end abuts loosely the inner surface of the case 1, as shown in 3.

The shaft22 within the chamber 2 carriesy a @am or curved arm 24, which is adjustably secured to the shaft byva pin 25, or otherwise. A circular disk serves as a relief valve 26 and is loosely and slidably mounted upon a cylii'idrical stem 27. The stein 27 may be eil her integral and cast with the cross bar 20, or it may be inserted in the cross bar 20 and project therefrom. A collar 28 -is mounted loosely on the stem 27, and is held from detachment therefrom by the Cotter piu 29or in any other preferred manner. A spiral spring 30- surrounds the valve stem 27 loosely and has one end bearing against said collar 28 and the opposite end bearing against the outer plain surface of the disk 26.

T he case 1 is slitted and at the slit, on opposite sides thereof, has two ears 31, extending in proximity with each other and tightened into forcible contact together by a screw 32. The slit in the case is thus narrowed and .the tube 33, hereinafter described, is clampedby said screw action.

A tubular body 33 is provided with an ex- .terior screw-thread on its upper portion, by

which it fits within and engages thefflange 5 of the case 1. The bottom of the tube 33 is shown at 34 and constitutes with the tubular part 33 a cup.V The outer surface of the bottom 34 of said cup is dished or concaved as vshown at 35, but leaving a central boss 36, which is centrally bored. The upper end of the bore is countersunk. There is a guide pin 37 on one side of the tube 33, ex-

tending inwardly. One or more air-admisv sion openings or ports 38 are out through the tube 33, preferably in approximately the shape illustrated in the drawings,-or in any other suitable form.

A thumb piece 39 is mounted rotatably in the perforationpthrough the boss 36 of the bottom 34 of the'tube 33. This thumb piece 39 has a tubular extension 40, which passes up through said perforation. This tube 40 is cut longitudinally, b'efore insertion, to form four (or any preferred number of) sections, as seen at 41. These sections are -flared by a suitable tool to spread outwardly in a radial direction to fit the countersunk portion of the bore and to lie in snug contact therewith, as illustrated in Figs. 2, 3 and 7,

and thereby have a spring-pressure 1n such contact. The thumb piece has an axial opening, which 1s square transversely, as

lbest shown at 42.

In my construction there is a combined throttle valvevand air valve which is described as follows: A tube 43 has a circular loosely. The tube 43 `is slidable looselyl within and along the tubular body 33 of the air inlet. The space Within the tube 43 below the disk 44 constitutes the primary mixing chamber. A cross bar 49 extends diametrically across the tube 43 and has a central -The `valve rod, above said screw-threaded portion, has the form of an elongated truncated cone, as shown at 53. The upper end of the conical portion of the valve rod extends axially through the aperture 45 of the disk 44, up through the lower' endof the gasolene receptacle or tube 6, and at its up per or large end it is in contact loosely with the ball valve 12. The action ofthis combined throttle' valve and air valve is hereinafter explained.

An operating lever 54 is mounted on the shaft' 22 and fastened thereto by a

key pin

5,5, or otherwise. The lower end of the lever 54 is enlarged into a sector shape, as represented at 56. The sector 56 at one corner has an inwardly bent lip 57, which is in contact with a stop pin 58, when the parts are in the position shown in Figs. 1 and 3, said' stop pin projecting from the case 1 outwardly, as best seen in-Fig. 3. At the opposite corner of the sector 56 there is an inwardly bent lip 59, through which a set screw 6() passes. This screw, when in contact with the stop pin 58 limits the oscillation of the lever 54 and shaft 22, to close simultaneously the gasolene feed valve, the throttle Valve and the air valve, as'y represented in Fig. 7.

A link bar 61-is pivotally mounted on the upper end of the lever 54 by the screw 62.

The link bar 6l is Inovedby the chauffeur, as desired, by means of' a lever (not shown). The portion of the bore of the gasolene tube or receptacle 6, which is directly opposite to the inner end of the feed plpe 7 is concaved as represented at 66 in Figs. 2 and 7.

The operation of my improved carburetor hereinbefore Vdescribed is explained as follows: When the engine (not shown) is not operating, the parts of the carbureter-are in the positions shown in Fig. 7. The gasolene flows from a tank (not shown) through the pipe 8, in the direction indicated by the arrow 64 in Fig. 7, and fills the pipe 7 and the gasolene chamber or receptacle 6 u to the screw or plug 15, or to the height o the level of the gasolene in said tank, if such level is below the bottom of said screw or plug., At this time the bal-l valve 12 is firmly tacle 6 by means `of the pressure of t `as shown in Fig. 7.

13, in whose socket 14 the ball 12 is seated above. At this time alsothe combined air valve and throttle valve i's closed, and the air supply is cut olf by the tube 43 which as a sliding shutter closes the air openings 38,

As seen in Fig. 7, the disk 44, extending across the tubeJ 33 Within the same but slidable therein, constitutes the throttle valve. In its closed position there shown, it prevents all low of the carbureted air to the engine; but in the open position illustrated in-Fig. 2, it permits said flow. The tube 43 which extends down from and is carried by.

the disk 44 constitutes the air valve, the lower portion of which'tube, when the parts are in the position represented in Fig. 7, acting as a shutter to close the air-admission openings or ports 38, but, when the parts are in the position seen in Fig. 2, rising wholly above said ports 38, and so permitting atmospheric a1r to enter through the ports. As already stated, the space in the tube 43 beneath the disk 44 is the primary mixing chamber, as will be hereinafter more fully explained.

When the chauffeur 'draws the link bar 61 in the direction indicated by the arrow 65 in Fig. 1, the lever 54 is moved and causes a partial oscillation of the shaft 22 and connected parts from the ositions shown in Figs. 6 and 7 to the positlons shown in Figs. 1, 2 and 3. The limits of said oscillation are fixed by the stop pin 58. The extent of the throw of the lever 54 is varied as desired, to increase or diminish the supply of the gasolene and air and so to change the rate of speed. When the parts are in the position shown in Fig. 6, the inner end of the screw 60 is in contact with the stop pin 58, but when the parts are in the position shown in Fig. l, the vlip 57 of the sector plate 56 is in Contact with said stop pin. The extent of the movement of'the -lin'k bar 61 and lever 54 is regulated by adjustment of the screw 60.

The oscillation of the shaft 22 caused by the movement of the linkbar 61, as just described, carries the lcam or curved arm 24 fromthe position shown in Fig. 7 to the position shown in Fig. 2, becausesaid cam or arm is fastened upon said shaft and therefore turns with it. The suction of the engine then draws the combined throttle valve and air valve (Fig. 4) .upward to the open position shown in Figs. 2 and 3. As the said valve has the cross bar 49, with which the valve rod 51 is engaged by the screw-threads,

as shown at 52 in the bearing 50 of saidcross bar, the

whole valve rod

51, 52, 53, is carried upwardly by the rise of said valve (Fig. 4). The `alve and connected parts continue to` riseiimtilgthe disk 44 comes into contact with the curved arm or cam 24, then in the position shown in Fig. 2, and is theite stopped.

Byymeafnsof the adjustment of the screw 60, as already explained, the extent of the throw of the lever 54 and the consequent oscillation -of the shaft 22 are pre-determined, and so the extent ofthe rise or opening of the Avalve are regulated as may be desired. The

rise of the valve rod 53, so caused, lifts the ball 12, thus unseat-ing the ball from the annular shoulder l1 and lifting also the presser bar 13 and increasing the tension of the spring 17. "lhus, the discharging

orifices

9 and 10 at the bottom of the gasolene chamber or tube 6 are opened, and the gasolene drops by gravity from said chamber or tube, aided by the suction of the engine, which sucks out the gasolene from said discharge openings. The rise of the valve (Fig. 4)

above described, also causes the tube 43 thereof to move up along the' inner surface of the tube 33, andr so theports 38, 38, are uncovered. The suction of the engine draws in the atmospheric air through these ports into the valve. The air current, so formed, is deiiected vby the under surface of the disk 44 and is there spread radially outward into a plurality of aircurrents (six, as shown in Fig. 5), and discharged from the valve through the

apertures

46,46, into the chamber 2 of the easel. The air which has been sucked in by the engine through the ports 38 moves with great forceup through the valve, and instantly takes up the gasolene discharged from the nozzle or orifice 9 of the gasolene chamber or tube 6, and dissipates it into vapor in passing, so that what lis discharged through the

apertures

46, 46, is gasolene vapor, or carbureted air, the gasolene having been finely.. divided, torn apart and thoroughly mixed with atmospheric air by the `radially-spreading, forcible currents, streaming out through said apertures of the valve.. The carburetedair then passes out through the chamber 2 and tube 3 to the engine. The tube 43 beneath the disk 44 thus orms the first or primary mixing chamber, in which the gasolene discharged from the nozzle A9 first comes in contact with the air currents which stream in through the ports j 38. The mingled gasolene vapor and air so discharged through the apertures 46, pass into the chamber 2, which constitutes the secondary mixing chamber, whereby the convergence of the wall to the outlet tube 3, which is of less diameter, said vapor and air are still more mingled before passing to the engine. 1

When the' carbureter is not in operation and the parts are in they position shown in Fig. 7, the lower portion of the valve rod 51 projects out belowthe thumb piece 39 to some extent, as illustrated in Figs. 6 and 7; but when the carbureter is in operation, the rise ofthe valve, already described, moves` the valve rod 51 up so that its lower end is within the square axial opening 42 of the presses or crowds down the valve.

. tube 33, but leaves a small 'space there open,.

-thumb piece 39, as plainly represented in Figs. 2 and 3. The rod 51, being square in cross section and loose in the square axial opening 42 of the thumb piece, can move longitudinally Without restraint, but cannot turn. The pressure of the spring 17 keeps the concaved end of the presser bar 13 constantly in forcible contact with the ball 12 and also keeps the ball 12 in forcible contact with the large upper end of the valve rod 53. The resistance to thisv spring-pressure is afforded by the threaded engagement of the part 52 of the valve rod in the threaded bearing 50 of the cross bar of the valve.

For fine adjustment of the

valve rod

451, 52, 53, to determine toa nicety the exact amount of discharge of gasolenefrom the gasolene chamber or tube 6, the ,valve rod 51 is capable of an independent movement on its threads 52 along the threaded bearing 50 of the cross bar 49. To make this adjustment the' piece or knob 39 is seized by the thumb and forenger and turned. The rotatory movement gives to the thumb piece 39 a corresponding movement ,tothe

valve rod

51, 52, 53, through the bearing 50. The guide pin 37 allows at all times by the vertical slot 48, the vertical movements of the valve and connected parts, but prevents rotation ofthe same.

To stop entirely the operation of the car-A bureter, the chauffeur draws the link bar 61 from the position shown in Fig; 1 to the positionishown in Fig. 6. This results in an oscillation of the shaft 22 and the movement of thecam or curved arm 24 from the positionshown in Fig. 1 to the position shown in Fig. 6. This cam movement y As the curved arm or cam 24 is adjustable on the shaft 22 by means of the set screw 25, as already stated, itis in practice 'advisable to adjust the arm or cam 24 so that in its extreme j lowestV posit-ion it willnot entirely close the combined throttle valve and air valve, but will nearly do so. In such a case, the bottom edge of the tube 43 does not quite close or cover the air ports 38 of the as illustrated in Fig. 6. The extent of such .opening depends upon and is regulated by the adjustment of the curved arm or cam 24 upon the shaft 22. In such a position of the parts, a minimum quantity of air and of gasolene is supplied and the throttle valve remains slightly open. The engine will therefore continue to run, but at its minimum speed; This cam action to depress the combined throttle and air Ivalve enables a quick reduction of speed to the minimum degree. y

When it is desired to stop the o eration of the vcarbureter entirely, the spar rin @Pw ratus is thrown out of circuit, and t e combined throttle and air valve then `descends automatically b gravity to the position shown in Fig.. by whichl movement the tube 43 Wholly closes and covers the air ports 38 of the tube 33. The descent of the valve carries down the

valve rod

51, 52, 53, and the ball valve 12 is forced to the annular seat 1l by the force of the spring 17 and the presser bar 13. Thus, the supply of air and of gasolene to the carbureter is cut olf and the supply of carbureted air to the engine is stop ed. As shown in Fig. 7, however, the bal valve 12 is fully seated on the annular shoulder 11, before the valve tube 43 has entirely closed the air inlet ports 38, and thus -the discharge of gasolene from the nozzle of the tube 6 is shut o. The valve then descends automatically by its own gravity alongthe tube 33, and by said movement withdraws the 'valve rod 53 from Contact with the ball valve 1 2. When, the engine is started again, the suction ,raises the valve and brings the valve rod 53 into` Contact with the ball valve 12, andthereafter lifts the valve and connected parts to the position shown in Fig. 2, as already explained.

Whenever, by any improper working or condition of the engine, there may occur an undue pressure of the gas or carbureted air in the chamber, or other tendencies or liabilities to an explosion, the relief valve illustrated in the drawings is useful. If the pressure of the aeriform contents of the chamber 2 exceeds the pressure of the spring 30 on the stem 27 of the valve 26, such internal pressure exerted through the openings 19, 19, forces: the valve disk 26 outwardly and overcomes the resisting pressure of the sprin 30, thus affording the necessary relief. gWh

pressure of the spring 30said sprin automatically closes the valve 26 into orcible contact with the plain face 18 of the case 1.

The splitting of the case 1 and the screw- 110 clamping together of the ears 31 by the screw 32 tendsto lock the flange. 5 and tube 33 together. l

The radial splits 41 of the annular flange 40 of the thumb piece 39 and the radial 1.15

spreading of the sections of said flange, as illustrated in Figs. 2, 3, 7 and 8, give a spring-pressure to said flange sections sutlicient to insure a proper frictional connection between the thumb piece 39 and the bot- 120 tom 34 of the tube 33 toprevent accidental displacement and to hold the valve rodv 50,

51, 53 set in its adjusted position.

The v'tube or gasol'ene chamber 6 may be recessed or concaved as at 66 (Fig. 6) to 125 enable a better flow of -gasolene from the y tube or chamber down behindthe ball valve -12 into the lowerpart or nozzle of said tube en the internal pressure in the chamber 2 is less in degree than the shown I produce a very simple and effective carbureter and greatly reduce the number of parts heretofore commonly employed.

The size of the carbureter is considerably lessened and the cost of manufacture reduced.

There is no float valve or mechanism therefor to supply the carbureter with gasolene. The gasolene i'lows unobstructed under the gravity pressure of its own head directly to the gasolene chamber or tube nozzle 6.

It is an important feature of my invention that whereas in other carbureters the nozzle or vdischarging orice, whereby the gasolene is supplied to the carbureting chamber or carbureting means, is directed upwardly, in my said construction the discharging end or nozzle ofthe gasolene tube or chamber 6 is directed vertically ,downlward, thus facilitating the discharge, and

especially enabling the exit of dirt and other foreign matter which may be contained in the gasolene as said liquid flows from the gasolene tank. When the nozzle discharges a stream or jet of .gasolene upwardly, such dirt and foreign substances are force up into the nozzle andare packed close therein and soon form a clog to diminish and ultit matel to prevent the discharge of the liquid there om. In my 'construction such 'substances iow out from the nozzle in a downward direction and drop out entirely by gravity, assisted by the suction of the engine.

Another advantage, realized in my device as described, Vis that all the valves are operatedA simultaneously and automatically.

i The combined air valve and throttle valve vopens wholly by the suction of the engine;

the rise of the valve, so caused, uncovers the air ports and admits the atmopsheric air; and said rise of the said valve opens the L nozzle valve 12, all at the same time. The opening of these valves is caused entirely by the suction of the engine. The closure of these valves is caused simultaneously simply by an oscillation of the shaft 22, which causes the cam or curved arm 24 to press downward to its normalv position the disk 44 of said valve and thereby to close the air ports 38 and the ball or nozzle valve 12. These valve movements result Yfrom the operation'of the link bar 61. The cam or curved arm 24 does not mechanically cause the-opening of these valves, but simply permits them and limits their extent, the motive bination of a carbureter case; a-shaft mounted transversely inthe case and capable of oscillatory movement; means'for oscillating said shaft at will to vlimited extents; a fixed air inlet tube opening into the carbureter case and extending from said case in an axial direction, which air inlet tube has ports through the sides thereof, located and arranged to deliver atmospheric air into the carburetor case; 'an outlet pipe communicatingv with the interior of the carbureter case and extending therefrom to the engine; a gasolene-supply pipe extending in the axial line of the carbureter case and of the air inlet tube and discharging into the air inlet tube; a tubular valve fitting slidably in the air inlet tube and adapted alternately to cover or uncover the ports of said tube and having at its topa disk provided with a'central aperture for the passage therethrough of said gasolene-supply tube, which disk has the same diameter as the tubular body of the valve and is adaptedfto be moved with said valve by the suction Tof 'the engine, said tubular body being provided with side openings adjacent to but beneath the disk, which openings are covered by the air inlet tube when the tubular body of said valve is 'wholly contained in the air, inlet tube in contact therewith, but are open to the interior of the carbureter case when the valve has been moved up beyond the top .of the air inlet tube by the suction of the engine; and a curved arm mounted fast at its inner end on the shaft and in contact at its outer end with the disk and adapted to move the tubular bodyof the valve into the air inlet tube 'and also to limit the extent of the upward movement of the tubular body of the valve when sald valve is subjected to the suction of the engine.

2. In a carbureter for an engine, the -;m

bination of a carbureter case; a shaft mounted transversely in the case @d capable of osclllatory movement; means for oscillating said shaft at will to limited extents; a xed air inlet ltube opening into the carbureter case and extendi from said case in an axial direction, w ich air inlet tube has ports through the sides thereof located and arranged to deliver atmospheric air the carbureter case; an outlet pipe communicating with the interior of the carbureter case and extendin therefrom to the engine; a asolene-supp y pipe extending in the axial ine of the carbureter case and of the air inlet tube and discharging into the air inlet tube; a tubular valve fitting slidably in the the same diameter as it and supported paralair inlet tube and adapted alternately to reter case at will, when the valve isextended up beyond the inner endof the air inlet tube, but said side apertures 'being coveredV by the air inlet tube when the valve and disk are seated therein; and a cam mounted fast on the shaft with its ,workingl surface adapted to contact at will with the throttling disk to force the valve into the air inlet 'tube and also adapted to-limit the movement `of t-he valve along the air inlet tube when said valve is Apartially withdrawntherefroml by the suction of the engine. v

3. In a carbureter for an. engine, the combination of a carbureter case; a shaft mounted transversely iny the case andc'apable` of oscillatory movement; vmeans for oscillating said shaft at will to limited extents; a fixed air inlet tubeopening into the carbureter case and extending therefrom in an axial direction, which air inlet tube has ports through the sides thereof, located and arranged to deliver atmosphericl air to the car- L'bureter case; an outlet pipe communicating with, the interior of the carbureter case and extending therefrom to the engine; a gasolene-supply pipe extending in the axial line of the carburetercase and of the air inlet tube and discharging into the air inlet tube; a tubular valve fitting slidably in the air inlet tube and adapted alternately to cover and uncover thevports of the air inlet tube, and provided with side apertures; a throttling disk having a central openin for the passage therethrough of said gaso en, -sup ply pipe, which--disk is fastened upn the top of thetubular valve and concentric with the tubular body' ofthe valve, havingA the same diametery and adapted to bemoved 'with the valve "by the suction of the engine; anda cam mounted on said" shaft and movable therewith andadapted to c lose the valve 'by' pressure upon said disk, said valve a erf tures being arranged so as to be covere by the. air inlet tube when the valve is closed.

4. 'In acarbureter for an engine, the combination of a carbureter case; a shaft mounted transversely in the case and capable of an oscillatory movement; means for oscillatin said shaft at will to limited extents; a fixed ,air inlet tube opening into the carbureter case and extending therefrom in an axial dif rection, which air inlet tube has orts through the sides thereof, located an ar= ranged to deliver atmospheric air to the 'carburetercase; an outlet pipe communicatin i with the interior offthe carburetor case an to the engine; a sondin l in the axi'a line r ease an ofthe air inlet tube andv discharging into the air inlet tube; a tubular valve fitting slidably in the air inlet tube and adapted alternately to cover and uncover the ports of the air inlet tube and provided with side apertures; a throtpassage therethrough of said gasoliene supply pipe, which disk is mounted upon the top ofthe tubular valve; and a cam mounted o n and vmovable with the shaft and in operative contact with the upper surface of the throttling disk. y l

5; In a carburete'r, the combination of a carburetercase; an air inlet tube extending into saidcase; a gasolene-supply tube supported in the case and extendin into the air .70 tlingA disk having acentralopeninv for the inlet tube; a discharging nozz e at the end 1 of the gasolenev-supply tube, providedwith a valve seat; a ball valve normally supported by the valve seat; a -slidably mounted valve within the air inlet tube, havin eral apertures, which, when the sliable valve is wholly contained in the air inlet tube,

are covered thereby,A but which open intol the carbureter case, when the slidable valve projects beyond the upper end of the air inlet tube; a valve rod mounted' in and movable with said slidable valve, and whose upper end is in constant contact with the ball valve and is adapted to unseat the ball valve in the nozzle, whenever the slidable valve moves up along the air inlet tube; an outlet tube from the carbureter case adapted todischarge into an engine; and a cover fastened on the slidable valve adapted to be lifted inthe air inlet tube by the suction of the engine.

6. In a carbureter, the combination of a carbureter case; an air inlet tubeextending into said case; a gasolene-supply tube suplatported in the case and extending into the l lwith a valve seat; aball` valve adapted to `lit in said seat.; spring normally pressing the ball valve into contact with said seat; a slidable vvalve mounted within the air inlet tube' and having lateralapertures, which, when the slidable valve is wholly contained in thel -air inlet tube, are covered thereby, but which vo en into the carbureter case, when the slidlaibl'e valve projects beyond the upper end of the air inlet tube; a valve rod mounted in and" movable with the slidable valve and whose up 4er end is in constant contact with .the bal valve and is ada tedy to unseat the ball valve in the nozzle, w enever the slidable valve rises in the air inlet tube; an outlet tube from the carbureter Case adapted to discharge into an engine;

and a cover fastened on the upper end of the slidable. valve and adapted to be lifted in the air inlet tube by the suction of the engine.

7. In a carbureter, the combination of a carbureter case; a gasolene-supply tube supported in the case and extending into the air inlet tube; a discharging nozzle at the end of the gasolene-supply tube, provided with a valve seat; a ball valve adapted to fit in said seat; a presser bar mounted in the gasolene-supply tube and having its lower end in Contact with the ball; a spring in the gasolene-supply tube having its upper end bearing against the upper end of the gasolenesupply tube and its lower end bearing against the presser bar; an air inlet tube extending into the carbureter case; a slidable' valve having lateral apertures and mounted in the air inlet tube, which apertures, when the slidable valve is Wholly contained in the air inlet tube, are covered thereby, but which open into the carbureter case, When the slidable valve projects beyond the upper end of the air inlet tube; a valve rod mountedin and movable with the slidable valve and Whose upper end is in constant contact With the ball and is adapted to unseat the ball in the nozzle against the pressure of said spring, Whenever the slidable valve rises in the air inlet tube; an outlet tube from the carbureter case to the engine; and a cover fastened on the u per end of the slidable valve adapted to be lifted in the air inlet tube by the suction of the engine. y

8. -In a carbureter,vthe combination of a carbureter case; an air inlet tubeextending intosaid case; a gasolene-supply tube supported in the case and extending into the air inlet tube, a discharging nozzle at the end of the gasolene-supply tube, provided with a valve seat; a spring-pressed ball adapted to fit in said seat; a slidable valve mounted Within the air inlet tube and having lateral apertures, which, when the slidable valve is Wholly contained in the air inlet tube, are covered thereby, but which open into the carbureter ease, when the slidable valve projects beyond the upper end of the air inlettube; a valve rodmounted in and movable With the slidable valve and Whose upper end is in constant contact with the ball and is adapted to unseat the ball 1n the nozzle Whenever the slidable valve rises in the air inlet tube; an outlet tube from .the

carbureter ease and adapted to discharge into an engine; and a cover fastened on the upper end of the slidable valve adapted to be lifted in the air inlet tube by the suction of the engine.

9. In a carbureter connected with an engine, the combination of a carbureter case; an air inlet tube extending into said case; a, gasolene-supply tube supported .in the case and extending into the air inlet tube; a dischar ng nozzle at the end of thegasolenesuppl;7 tube, provided with a valve seat; a

Y spring-pressed ball adapted to fit in said seat; a slidable valve mountedwithin the air I inlet tube and provided With a cover whereing into said case; a gasolene-supply tube supported in the case; a discharging nozzle atv the end of the gasolene-supplying tube; a valve seat in the nozzle; a spring-pressed ball adapted to fit in said seat, a slidable valve mounted in the air inlet tube and having a cover and also lateral apertures, which when the slidable valve projects beyond the upper end of the air inlet tube, communicate with the interior of the carbureter case, but which, when the slidable valve is wholly contained in the air inlet tube, are covered thereby; an outlet pipe from the carbureter case adapted to discharge into an engine; a valve rod carried by the slidable valve and at its upper-end in contact With the lower surface of the ball and adapted to unseat the ball in the nozzle; `an oscillatory shaft mounted in the carbureter case; means` to give an oscillatory movement to the shaft; and a cam fastened on the shaft capable of moving the slidable valve downward into the air inlet tube and also of limiting the rise of the slidable valve When said valve is lifted. in the air inlet tube by the suction of the engine.

11. In a carbureter, the combination of a carbureter case; a gasolene tube having a discharging nozzle; a ball valve seated in the nozzle; means for supplying gasolene to the tube; a valve rod in contact with said valve; and means adapted to move the valve rod to unseat said ball valve.

12. In a carbureter, the combination of a carbureter case; a gasolene tube Within the carbureter case; a gasolene supply pipe entering said tube midway its ends; a downwardly directed nozzle Within the carbureter case adapted to discharge gasolene from said tube by gravity and provided with a valve seat; a ball in said nozzle fora valve normally resting upon said seat; and means for lifting and' lowering said ball valve at will, said gasolene tube being provided with a recess in its side opposite to the discharging end of said pipe` for the purpose of supplying gasolene to the nozzle in the rear of said ball.

13. .In a carbureter, the combination of a carbureter case; a gasolene-supply tube havv ing a nozzle within the case; means for su plying asolene to the tube; a ball 1n said nozzle or a valve; a valve rod in contact with the ball and adapted to move the ball to allow a discharge of gasolene from the Jtube through the nozzle; an air 'mlet tub Appening into thev case and having lateral near the bottom thereof; a valve having a tubular body and an open bottom and mounted slidably in the air inlet tube, which tubular kbody has near its top air-discharging ports through its sides; a disk for a cover of said slidable valve; means for supporting the valve rod upon the slidable valve; and means for giving to said slidable valve movements in alternately oppositefdirections, said slidable valve being so arranged and movable in the air inlet tube that when the upper 'end of said slidable valve projects beyond the upper end of the air inlet tube the air-discharging ports of the slidable valve open into the carbureter case. 14. In a carbureter for an engine, the combination of a carbureter case; an air admission tube opening into the case and provided with lateral air ports; a tubular valve slidably mounted inthe air admission tube and having a centrally perforated cover and an open bottom, said tubular valve being provided with a plurality of air apertures just beneath the cover; a gasolene-feed t-ube having a nozzle which extends through the perforation of said cover into the tubular valve; a valve in the nozzle; a cross bar in the tubular valve extending diametrically thereof; a

valve rod supported by the cross bar and projecting into the nozzle to o erate the nozzle valve; an oscillatory sha t mounted `in the carbureter case; an operating rod ,for

oscillating the shaft; a cam on the shaft in contact with the cover of the tubular valve adapted to depress the tubular valve when the shaft is oscillated in one direction but to limit the rise of the tubular valve in the 0pposite direction; and an outlet pipe from the carbureter case to the engine, said tubular valve being movable upwardly by the suction of the engine, and said tubular valve and air admission tube coperating to close the air apertures of the'tubular lvalve and to close -the lateral air ports of the admission tube when the tubular valve is Wholly, contained in the air admission tube, but to uncover the llateral air 'ports of the air admissio tube and to open the air apertures of the tubular valve when the tubular valve pro'e'cts 11p-beyond the top of the air admis- Y sion tube.

15. In acarbureter, th' mbination of a carbureter case; an air ad fission tube opening into theitcase and rotatably connected therewith rovided with laterali-air ports; a tu valve having an open bottom and acentrallI perforated cover, which tubulavalve is slldably mounted in the air admission tube, and has one longitudinal slot and a plurality of air apertures just beneath the 'cover';`a pin extending from the air admission tubeggzi v'ardly through said slot; a gasolene-feetd. "be in the car 'ureter ports! case and having a nozzle which projects loosely through the aperture ofthe valve cover; a valve in said nozzle; a cross bar extending diametrically in the tubular valve; a valve rod supported on the cross bar and projectin into the nozzle to operate the nozzle va ve; anoscillatory shaft mounted in the case; and a cam on the shaft in contact with said cover to limit the movements of the tubular valve in the air admission tube, the air admission tube servin to close the air apertures ofthe tubular va ve when the tubular valve is Wholly contained in the admission tube and the air ports of the air admission tube being covered when the tubular valve is wholly contained in the air admission tube, but the air apertures being capable of discharging into the carbureter case when the tubular valve projects up beyond the top ofthe air admlssion tube.

16.v In a carbureter connected with an ensov gine,- and havin a carbureter case, the combination therewith of the combined throttle valve and air valve herein described cornprising a centrally' perforated circular disk; a tube longitudinally slotted; a plurality of posts connecting the top of the tube to the .w ich said combined throttle valveand air valve is slidable and which extends into said case and is provided withlateral airports and ilsowith a pin which projects loosely through the slot of the first named tube and also' havinga bottom in which is a central threaded hole; a thumb piece in threaded enga ement with @lid threaded hole, which thum wherein the square stemof the valve rod is slidable but not rotatable; oscillatory shaft mounted in the easegan outlet pie from the case to the engine; a cam Von t e shaft adapted to de ress the combined throttle valve and air va ve when the shaft is oscillated in one direction and to limit the rise of ysaid combined valve when the shaft isoscillated in the opposite direction;- a l gasolene-feed tube havinga downwardly extendving nozzle in the vertical axial line of the carbureter case and passin throughla .central laperture of sald diei into the rst named tube; a valve seat said nozzle; and a ball normally resting on the valve seatV in loose contact with the upper end of the ar extendpiece has a central square aperture valve rod, said intermediate apertures opening into the carbureter case when the tubular body of the air valve projects u beyond the top of the air inlet tube but c osed by the inlet tube when said tubular body of the valve is wholly contained in the air inlet tube, at which time also the said tubular body of the air valve closes the lateral ports of the air inlet tube.

17 In a carbureter, the combination of a gasolene tube having a nozzle; a ball seated in the nozzle for a valve; a valve rod comprising three integral portions,-a truncated cone-shaped upper portion extending into the nozzle and having its large end adapted to contact with said ball, a central cylindrical threaded portion and a lower portion square in cross section; a support vertically movable and provided with a central threaded bearing with which said central threaded portion of the valve rod is engageable; and a thumb screw mounted loosely'by a square central aperture on the lower portion of the tez-valve rod and adapted to adjust the position of 't'l`1e`valve rod longitudinally.

18. In a carbureter connected with an engine; the combination of a carbureter case; an air admission tube opening into the case and having lateral ports and a closed bottom with a centrally perforated boss; a

thumb piece mounted rotatably in the perforation of the boss and having an axial bore which is square transversely; a valve rod which at its lower end is square in cross section extending slidingly in the axial bore of the thumb piece, but which is round and threaded at its center and at its upper end is shaped like-a truncated cone 'with-its "large end uppermost; a support having a central threaded bearingto receivey rotatably the threaded portion of the valve rod; a slidable valve mounted in the air admission tube and capable of partial withdrawal therefrom by the suction of the engine, which valve has lateral ports and is adapted to cover the lateral ports of said tube when fully seated therein and to uncover the lateral ports of said tube` when partially withdrawntherefrom, said lateral ports of said valve being covered by -said tube when said valve is fully seated in said tube but uncovered to communicate with the carbureter case when said valve is partially withdrawn from said tube as aforesaid; a gasolene-feed tube discharging into the sliding valve and having a nozzle into which the inner end of said valve rod enters loosely; a ball in the nozzle for a valve to control the delivery of the gasolene and movable by said valve rod; an

outlet tube from the carbureter case to the 19; In acarbureter connected with an engine, the combination of a carbureter case; an air admission tube opening into the case and having a closed bottom with a centrally perforated boss; a thumb piece mounted'rotatably in the`perforation of said boss and having an axial bore which is square transversely and provided with longitudinally split flanges capable of being bent or flared to lie in the bore of said boss with a springpressure; a valve rod -which at its lower end is square in cross section and extends loosely in the axial bore of the thumb piece but is rotatable with the thumb piece, and which is round and threaded at its center and which at its upper end is shaped like a truncated cone with its large end uppermost; a support having a central threaded bearing to receive rotatably the threaded portion of the valve rod; a gasolene-feed tubehaving a nozzle into which the upper end of the valve rod enters loosely; a ball in the nozzle for a valve to control the delivery of the gasolene and movable by said rod; a slidable air valve vertically movable in the air admission tube by the suction of the engine, an outlet pipe from the carbureter case to the engine; an oscillatory shaftA lene-supply chamber in which said gasolene feed valve is movable; a shaft mounted in the case; means to oscillate the shaft; and means operated by the shaft for limiting the movements of all of said valves.

21. In a carbureter, the combination of a carbureter case; an outlet pipe from the case adapted to conduct carbureted air to an engine; an air inlet tube opening into the case; a longitudinally movable suction o rated throttle valve in thel case; a longitu inallymovable suction-operated air valve mounted in the air vinlet. tube; a longitudinally-movable suction-operated gasolene-fee'dvalve; a gasolene-supply chamber within? the case; a shaft mounted in the case; meansffor oscillating said shaft; and means operated by the shaft and adapted to close all said valves at will.

22. In a carbureter, the combination of a carbureter case; an outlet vvgpipe therefrom; an air inlet tube opening into said case; means for supplying gasolene to the carbureter for mixing the vapor of said gaso- Iene with theair delivered to the carbureter 'by the air inlet tube; means for discharging the carburete'd air when produced and a'cam in the case for closing at will said gasolenesupplying means an said means for dischargmg carbureted air or for simultaneously permitting and limiting at will the opening of said gasolene-supplying means ALBERT HVOWARTH.` Witnesses 'WARREN R. PERCE, HOWARD A. lLamnmr.