US1211386A - Carbureter. - Google Patents

Description

v C. W. BECK.

CARBURETER.

APPLICATION FILED OCT-19,1911.

Patented Jan. 9, 1917.

' STA PATEL CHARLES w. BECK, or ROCKVILLE CENTER, NEW YORK, ASSIGNOR, BY MEsNE ASSIGN- MENTS, To THE BECK-FROST CORPORATION, or DETROIT, MICHIGAN, A CORPORA- TION OF MICHIGAN.

Specification of Letters Patent.

CARBURETEB.

Patented Jan. 9, 1917.

Application filed October 19, 1911. Serial No. 655,453.

One of the main objects of this inventionis to provide means in a carbureter for completely breaking up the minute globules of gasolene before they enter the intake of.

the engine, so that the gasolene will be thoroughly vaporized and incorporated with the air during all ordinary changes in temperature. The advantage of producing a mixture in which the gasolene is completely vaporized is manifest.

Another object of the invention is to pro-- vide a power-driven means by which any minute globules of gasolene drawn toward the engine intake will be broken up and completely vaporized.

Another object of the inventionis to provide improved means for controlling the air inlet into the carbureting chamber.

Another object of the invention'is to'provide means for insuring the delivery of mixture in equal quantities to all of 'thecylinders, whether or not the suction or compression of said cylinders are equally efficient. That is to say, with my invention'a cylinder having a worn piston or inaccurately fitting piston rings will .be supplied 1 with the proper amount of mixture and with a like amount of mixture as a cylinder having a properly fitting piston.

Another object of the invention is to provide means whereby any gasolene which may fall to the bottom of the carbureting chamber will be caught by an absorbent material and thenvaporized.

Another object of the invention is to insure a proper supply of air to the carbureting chamber, said supply of airbeing varied according to the speed of the engine; I

A further object of the invention is to provide means whereby the air inlet to the carbureting chamber may be somewhat obstructed when the'engine throttle is fully open, :said means being adjustable to vary trol and the throttle 'valvesot that the said .air intake may be. fully openedwhen the the relative positions of the'air intake con throttle is open or may be somewhat obstructed when the throttle-is fully open. The object of this form of air control is obvious, it being well known that when the throttle is open and it is desired to start the engine the air intake to the carbureting chamber is desirably obstructed; but when the engine is running on fullpower it is desirable that the air intake into the carbureting chamber shall be unobstructed.

There are other objects and advantages of theinvention which will more fully hereinafter appear.

g In the drawings Figure 1 is a vertical, central, sectional view of the carbureter; and Fig. 2 a plan View thereof.

Referring to the various parts by nu- 'merals, 1 designates a float chamber which may be of any suitable construction and which contains the float valve 2, said float valve regulating the intake of gasolene into said chamber in theusual manner. The level of liquid in the float chamber may be regulated by any of the suitable mechanisms used for that purpose. This chamber is provided with the usual spring-controlled plunger 3 and the lever A for operating it, said plunger being designed to depress the float to permit gasolene to flow into the said chamber when priming or charging the carbureter chamber. Gommunicatingwith the side of the float chamber in the usual manner is a pipe 5, said pipe being located a suitable distance above the bottom of the carbureting chamber to insure the proper m depth of gasolene in the float chamber. This pipe is formed with an outlet port 6 which communicates'with a downwardly extending discharge port 7 The outlet port is controlled by the usual carbureter. needle valve 8.

Secured to the pipe 5 and depending there from is an annular casing 9 which forms a carbureting chamber 10, the discharge port 7 being arranged in the center of said carfrom the upper end of the carbureting chambervis a circular casing 11 which forms a mixing chamber whose lower end is in open communication with the carbureting cham:

-ber'. In the mixing chamber is anexhaust wheel or 'blower '12 mounted upon shaft 13' whose outer end is connected by a'flexible shaft is to any suitable driving part operated by the engine. This mixing or exhaust wheel is formed with transversely extending curved blades which are disposed between twoside' rings 16. These'blade's are cupshaped in transverse section, as shown clearly in Fig. 1, and the exhaust wheel ro tates in the direction indicated by the arrow in said figure. "It is manifest that as this exhaust wheel is rotated 'itwill draw air from the carbureting chamber at such a speed as to lift minute globules of gasolene and draw them into contact with said blades. As the bladeswill rotate at a high speed the said minute globules of gasolene will be thoroughly broken up and dissipated byythe actionofthe blades. This is of great importance for'the reason thatit is injurious to {have the gasolene passing into the engine cylinder in a badly, or partly vaporized condition and insufficiently mixed with the air.

The rapidly rotating exhaust wheel or blower will vary its speed in accordance with thespeed of the engine so that the air supply, or the air drawn into the vaporizing chamber will be vproportionedto the speed of the engine. The action of this suction or exhaust wheel is to materiallyassist-in supplyingair to the vaporizing chamber and in forcing the mixture 'intothe engine cylinders. It is manifest that therapid rotation of this wheel will force a supply of mixture'into the engine cylinders so that a liver it into the intake of the engine. It is manlfestthat when the engine is running at high speed and the gasolene charge drops from the dischargezopening in plpe 5 the upru'sh of air induced by the rapidly rotat- H ing exhaust an d'mixing 'wheel, and the suction of the engine, Wlll cause the unvapor- -i'zed particles of gasolene to rush upwardly blades of" the revolving wheel. Ifest that the continued rotationoflthe exand bring them into violent contact'with. the

It is manihaust-wheel'will materially add to the speed and volume of the upward currents of air through the carbureting'chamber andalso that its rotation will aid materially in vapori? izingthegasolene. The violent motion of the air a'nd of the gasolene particles caused by-the rotatingexhaustwheel will rapidly vaporize .thefgasolene :and thoroughly mix thewapo'r withthe airbefore the mixturefis delivered or permitted to flow into the intakeinresponseto the suction ofstheengine.

- out being forced :to

In the'lower end of the carbureting chamber is arranged a horizontal piston 18 which comprises a ring 19 supported by spider arms from a hub 20. 'Stretched'over the ring and carried thereby isa d-isk QO of felt or other suitable absorbent, pervious material, said material being secured to the outer surface of the ring and forming a yielding packing between the ring and the interior surface of the carbureting chamber. The lower end of the casing forming the carbureting chamber is cylindrical in cross section in order to form a cylindrical chamber in which the piston may be reciprocated, as will be more' fully hereinafter set forth. It will, of course, be understood that the felt or other absorbent material maybe secured to the piston in any suitable manner. The purpose of using absorbent and pervious ma.terial across the ring piston is to permit air to be drawn up 7 through said piston when the piston is within the cylindrical part of the. carbureting chamber, as will be more fully hereinafter set forth. The piston is supported upon the upper end of avertically reciprocating piston stem 21, the lower end of said stem being guided in'a hub 22carried by a depending spider frame 23 secured tothelower end of v the casing formingthe carbureting chamber.

Thellower edge ,of the cylindrical part of the carbureting chamber is on'an angle oblique to thevertical central line of. said chamber, as shown clearly in Fig. ,1, sothat as the piston 18 islowered it progressively opens the lower end of said: chamber to the atmosphere; and as it is raised into said chamber it progressively cutsoli the free communi cation of'said chamber with'the atmosphere, said chamber being in-full open communication only "when said pistonis :in its lowest position.

It-ismanifest that when starting the engine, or at any time during its operation, if any gasolene reaches the piston it will be absorbed by the piston covering and will then be taken upbythe air which is drawn upwardly through the. piston, and that there will {be no' accumul'ation' of a free gasolene withinthe carbureting' chamber. It is also clear that by varying the position of'the piston inthe carbureting chamber the amount of air passing freely intosaid'chamber withpass through :the piston maybe varied.

i In the engine intake is arranged the usual throttle .valve 24 which is connected by rod 25 .:to 1 any suitable form of. throttle valve controlling meansj Connected to the lower end of the piston stem 21 is a controlling lever'26. The endlofthis lever is connected to the throttle 'valve by'means ofwlink 27 so that the, piston willbei moved simultaneously with "the movement 'ofIthef throttle valve. In the ordinary operation'of'theengine the l.

" parts willbe arrangedas shown in Fig. 1,

the piston being lowered when the throttle valve is opened, and being raised 1nto the carbureting chamber when the throttle valve ing a mixture rich in gasolene vapors. In

order to provide forthis arrangement of the piston and throttle valve theconnecting link 27 is divided and the two parts connected together by meansof a cam connecting device 28. This device is pivoted to one member of the link and is provided with acam slot 29 in which the other member of the link is pivoted. By arranging the cam as shown in Fig. 1 the link is shortened, but by throwing said cam upwardly it is manifest that the link will be extended. A spring 30 is connected to the cam and to one member of the link, and is so arranged that it will hold the cam in either its upper or its lower position. The connection between said spring and the cam is so arranged that when the cam is in its upper position the tension of said spring is on one side of the center line between the two pivotal points of the link members, said tension holding the cam in its adjusted position; and when it is in its lower position said spring connection is on the opposite side of the center line between the two pivotal points of the link members and holds said cam in its said lower position. Of course, any suitable means may be provided for lengthening and shortening the link, the device shown being used merely by way of illustration and as a simple means for illustrating this feature of the invention. It is manifest that when the throttle valve is opened in starting the engine it will only be necessary to swing the cam 28 to its upper position to extend the link and thereby throw downwardly the outer end of the piston controlling lever. This will force the piston upwardly into the carbureting chamber and prevent the free passage of air into said chamber. When the engine is running it will only be necessary to throw down the cam 28 in order to restore the piston to its normal position with relation to stood that the form of the lower end of the carbureting chamber may be varied as desired in order to vary the free intake of air into the carbureting chamber by raising and lowering the controlling piston, the means shown 'bein one of many forms of devices which may e employed for that purpose.

From the foregoing it is manifest that by providing means for mechanically driving the suction wheel at a high speed the gasoent piston but will be taken upby the upwardly rushing air, and if not completely vaporized before'it reaches said wheel the unvaporized globules or portions of the gasolene will be struck by the rapidly moving vanes of the suction wheel and thoroughly broken up and vaporized. The rapidly swirling air within the mixing chamber will quickly vaporize whatever'portion of the gasolene may find its way to they blades of the suction wheel. It is also manifest that the gasolene vapors and the air will be thorsuction from the engine in drawing air through the carbureting chamber and delivering it to the engine intake, thereby insuring an abundant supply of fresh mixture to the engine and relieving the engine of the work of drawing air through the carbureting chamber. By this means the mixture is practically delivered to the engine intake so that the instant the intake or inlet valves of the engine are opened a full charge of mixture is delivered to said valves.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A carbureter comprising a carbureting chamber, means for supplying gasolene thereto, an air inlet into said carbureting chamber, a pervious closure for the air inlet, means for moving said closure to place the carbureting chamber more or less in free open communication with the atmosphere.

2. A carbureter comprising a vertically arranged carbureting chamber having an air inlet at its lower end, means for supplying gasolene to the upper end of said carbureting chamber, a pervious, absorbent closure for the air inlet of said carbureting chamber and arranged to receive gasolene delivlene delivered from the discharge outlet of the gasolene pipe will not reach the absorbplying. gasolene tothe upper end of said 7 carburetlng chamber, an'absorbent closure for the said air inlet, means for moving said closure to place the carbureting chamber in more or less open communication 'With'the atmosphere, and means for drawing air through said absorbent closure and through the carbureting chamber.

4. A carbureter comprising a vertically 7 absorbent closure and through the carbureting chamber.

'5. A carbureter comprising a earburetlng chamber having. an air inlet at its lower end,

the lower edge of said chamber being in part oblique to the axis of the chamber, a pervious closure device fittings-aid chamber, means for moving said closure device inwardly or outwardly beyond points on the lower edge ofthe carbureting chamber to place said chamber more or less in open communication with the atmosphere, means through the earbureting chamber.

6. The combination of a carbureter comprising a carbureting chamber having an air inlet, means for supplying gasolene to said chamber, a pervious closure for said inlet, an engine intake connected to the carbureting chamber, a throttle valve insaid intake, connectionsbetween said throttle valve and saidpervious closure for the inlet for op erating said pervious closure upon movement of said throttle valve, means for placing the carbureting chamber more or less in open communication With the atmosphere by said movement of the closure, and means in said connections for permitting the move ment of said thr ttle valve Without placing the carbureting chamber in open communication With the atmosphere.

In testimony whereof I hereunto affix my signature in the presence of tWo witnesses.

CHARLES VJ. BECK.

Witnesses:

BESSIE :MAGDONALD, WILLIAM M. SWAN;

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 1L0.

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