US1038050A - Carbureter. - Google Patents

Description

'UNITED' srATnls rATEN'r OFFICE.

DONALD B. WILLS, 0F CINCINNATI, omo, AssIGNoR or* ONE-HALF 'ro ADOLPH KLEIN,

- or CINCINNATI, oHro.

Patented Sept. 10, 1912.

VCABBURETER.

1,638,050. Specification of Letters I'atent.

. l K v,To awwmttmay commi:-

Be it known that I, DONALD R. WrLLs, a citizenoffthe United States, residing at Cincinnati, in the'county' of Hamilton and Estate of Ohio, have invented certain new and useful Improvements in Carbureters, of

which the following is a specification.

My invention relates to earburete'rs, and has for its# object the 'provision o f novel means whereby the supply of fuelle regulated',- and further, the provision of novel meanswh'ereby the suction-controlled valve regulates the movable member of the fuelvalve, and the invention will be readily unders'tood fronrthe following description and claims,l and from the drawing, in which latter: I ,Y f 'f Figure 1 is a central vertical section of .my improved device taken on the line z-z of Fig. 2. Fig. 2 is a plan View of the same. Fig. '3 is a front elevation ofthe mechanism for' controlling the fuel-valve, with the carbureter partly broken away and partly in section on the line e-z of Fig. 2. Fig. 4 1s a perspective view of the guide for the fuelvalve controlling` means; and, Fig. 5 1s a perspective yiew of one of the adjusting screws for theguide.

1 represents the casing, 2 is a fuel-valve, 34 is an air-intake valve, 4 is a throttle-valve which has suitable connection with an ordinary throttle-lever' for instance of an automobile or other device in connection with,

which the carbureter may be used, the throtf arm 5 secured to the rock-shaft 6 on which the throttle-valve is mounted, the throttlevalve being located in an outlet or suction passager 7 communicating in suitable manner with the cylinder or cylinders of an internal combustion motor. I

The fuel-valve 2 in the form shown comprises a valve-seat 8 with which a valve-plug 9 coactsfor opening or closing the valve, the fuel-valve having communication with a primary air-intake passagelO. The fuelpassage 11 for the fuel-valve connects in suitable mannerwith a fuel-reservoir 12 as by ducts 13 crossing the primary air-intake passage. The primary air-intake passage is shown contracted, as at 14, adjacent to the fuel-valve, the fuel, such' as gasolene, beine* drawn from the fuel-valve by the forced passage of the air past the fuel-valve.

15 is a oat which contacts a lever 16 y from a suitable source.

shown pivoted at 16', and arranged to contact a collar 17 of a valve-stem 18-of a valve 19, the valve-seat 20 whereof is arranged to have the valve-plug of the valve-stem 18 received therein, but normally urged there-` from by a spring 21 which normally tends to open the valve 19 for supplying the fuel at suitable height in the reservoir, the fuel-A supply being receivedthrough a pipe 22 The float is guided by wings 25. vThe valve-stem 18 'is received in a hole' 23 of a closing-plug 24, the hole 23 being sufficiently large to permit the passage of air between its wall and the valve-stem into the space of the reservoir above the fuel.

The valve-plug 9 is shown on a valvestem 26, the valve-plug being preferably urged away from its valve-seat for tending to maintain the valve 2 in open relation. This in thev form shown is done by a spring 27 received between the bottom of a socket 28 in the casing and a head 29 Von the valvestem, the head being slidable in and guided by the Wall of the socket as a bearing therefor. The raising of the valve-stem- 26 is limited by an obstructing part 36 which controls the position of the movable part of the valve 2. It is shown in 'the form of a lever pivoted at 37, the lever being shown as a bell-crank lever, one arm 38 whereof has bearing on the end of the valve-stem 2G. the position of the controlling part being determined by the automatic air-intake valve.

The automatic air-intake valve in the form shown comprises a seat 41 which is arranged to be substantially closed by a valve-disk 42 which'has a sleeve-bearing 43 about a post 44 secured to the casing. The valve-disk is normally urged toward closing position by a spring 45 received between said valve-disk and the casing for normally urging the valve-disk toward seatingV position. the movement of the valve-disk into seating position being shown "limited by stops 46 shown in the' form of the bent endsA of rods 47 secured to the casing, thc bent ends being received above said valve-disk. The valve-disk is prevented from turning by a post 48 secured to the casing` and rcceived through an aperture 49 in said disk. The valve-'seat 41 is at the outer end of a shell 50 having an inner tapering Wall, and as' the valve-disk is drawn inwardly by suction through the throttle or suction-valve `a bell-crank lever 4, the space between the outer edge of said l fuel-valve.

valve-disk and said tapering inner wall gradually increases for admitting greater quantities of air. Making this inner Wall, across which said Valve-disk has movement, tapering, has the function oi" permitting the opening oi said automatically act-ing airintake valve to be graduated of movement thereof, the extent of this movement also controlling the extent of movement ot the movable part ot' the fuelvalve as hereinafter more fully described.

Suitable means are provided for controlling the degree of movement of the movable part of the fuel-valve from the automatically acting air-intake valve, which in the Vpresent instance I have shown in the form ol a guideivay for guiding the movement of the end-thrust or controlling member t'or the valve-stem 2G. Thus the valve-disk has thereon a pedestal 5l which moves with the. \'al\'edisliY and supports a guide 52 shown as a pivoted guide, pivoted on a stem 53 having a head received in a socket 55 in the guide for preventing release of the guide trom the pedestal. There is a spring 5G received in a socket 57 ot' the pedestal and about the stem between a collar 5S on the stem and the bottom of the socket 'for urging the guide toward the pedestal. In the toi-m shown, the guide is positioned bv means ot.' screws 61 with which nuts (32 have threaded engagement. The screws are slidable longitudinally in bearings Gil 'et ot. the pedestal, the nuts being;` received in slots lili. the walls ot which position the nuts long-iludinally. llpon manipulation ot Zie nuts, longitudinal movement ofE :s i, :aast rlhe outer ends nl llu screws are tu'ovioed with positioningl heads tl received in slots lli' in the `guide tor preventing turf` 'iig ol? the screws. The screws are ijuovid i with bean ing tat-,cs GS al the respective sidel ot' the lwarinthese heads. shown as imite-ed knife-edge btuirii lll cesses Gil tr lhe contA` L niemiier as stated is shown it. and lne :um il thereof is provided with ,i shoe f f which males cori-v l'act. with the traute. fie h ng tace 73 ot the` gruute. il; preferably made olf liber tor .f z Wear oi the part. n

The zguide is: so nw-anual that its` guiding tace univ be placed parallel with or at an anule with relation to the line otl movement oi" theautonialic air-intake valve, and the lower or the upper end et the guiding 'tace may be adiiniml relatively close to orrelatively 'tarlznio the :axis ot longtitiulinzzl moiwment. oil' saifl valve. so that the control o!" the 'incl-valve by the movement of the axiallj" movabie automatic air-inta-1e verve may be either neutral or a gradually opening or a gradually closing iizontrol l'orl the y exceggw@ by the extent.

In its normal and generalrelation the control by the guide of the fuelvalve would be a gradually opening control so that as greater suction is caused by the speed of the motor a gradually increasing raising ot' the valve-plugv may result from the movement of the automatic air-intake valve.

ln operation, when the motor is running at slow speed, with the throttle-valve practically closed or only slightly open, air is drawn throifxgh the primary air-inlet passage l0, which causes fuel, such as gasolene,

to be drawn through the fuelfvalve, the fuel mixing with the air for forming the mixed charge received into the cylinder of the engine for forming the propulsion charge for the piston. Upon further openinlr of the throttlefvalve a greater quantity o air will be drawn through the primary air-inlet ralve past the fuel-valve, and if the quantity of air so drawn exceeds the capacity of the primary air-inlet passage to supply or il the suction created by the more rapidly moving piston or pistons of the engine upon the automatic valve is sullicient to counteract the closing action of the spring thereof, the automatic air-intake valve Will be opened to an extent dependent on the suction created, and the farther that the throttlevalve opened the greater will be the automatic movement oli -the automatic airintahe valve. The air received through the automatic air-iatale? valve is mixed With the charged air received trom the primary airinlet passage and passes to the cylinder or cylinders of the engine, for supplyingl the greater quantities ot air required under higlnspeed conditions.

la the relation oi the parts shown in the drawing, the fuel valve-stem is permitted to move a distance deiiendent on the extent ol mrivcmentoit the automa-lil.: air-intake valve for, as the automatic aiuintakc valve is caused to move, the guide thereon moves with the valve. and as the guiding face of the ,duide is at an angle with reference to the linear line ol movement of the auto matic air-inlet valve, the heel of the fueluilvc controlling part is permitted to rccec e with consequent movement of the fuelvalve stem.

lla ving thus fully what l claim as new Letters Patent is l.. ln a carburetor. the combination with a czisingr having a primary air-intal e assape, ot a tucbvalve having a movable part and opening into said passage, an axially momble aa'domati.I air-intake valve, Said automatic air--intal-:e valve movable automatically in thcfhrectioii et suction from the engine for opening said automatic airintake valve, ay pcd stal mounted on and moving with said axially movable automatic described my invention, and desire to Secure by .air-intake valve, a ide. on said pedestal,

movement of said axially movable air-intake valve, a controlling part for said movable part vofv said fuel-valve provided with ,a part coacting with said guiding face, and resilient means for normally automatically )closing said automatic air-intake valve, substantiall-y as described.

2. In a carbureter, the combination of -a fuel-valve having; an axially movable part,

an axially .movable air-intake valve,- said axiallymovable part and said axially Inovable air-intake valve movable in parallel lines inV closely. adjacent parallel planes, a spring acting on said movable part for normally opening said fuel-Valve, a pedest-al mounted on and moving with said axially movable air-intake valve, a guide thereonA extending in the general direction of said parallel planes, means for adjusting the angularity of said guide withrelation to said p arallel planes, and a bell-crank connecting-member between said guide and movable part having a pair'ot contact-parts thereon, one of said contact-parts coacting with said guide and the other ofsaid contact-parts acting on said movable part of said fuel-valve, substantially as described.

` 3. In a carbureter, the combination with a casing having a primary air-intake passage of afuel-valve, said casing comprising an air-intake shell, an axially movable automatic airfintake valve or'said shell automatically moving in the direction of suction from the engine for opening said automatic air-intake vali/afa pedestal mounted on and movable with said axially movable automatic air-intake valve, a guide on said pedestal, said guide having a guide-face extending in the general direction of said axial movement, means for adjusting the. angularity of said guide-face with relation 'to said axial movement, said pedestal l and ide located within the longltudinal ,projection of said air-intake shell, and resillent means for normally automatically closing said automatic air-intake valve, and a con'- trolling member for said fuel-valve yguided by said guide-face, substantially as de-y scribed. I

4. Ina carbureter, the combination oal casing provided with a throttle-passage and` a fuel-reservoir, an axially movable automatic air-lntake valve, anaxlally movable fuel-valve located between said throttle assage and saidl air-intake` valve, said elvalve and said air-intake valve being in closely adjacent positions, fuel-valve controlling means actuated by said axially movable automatic yair-intake valve comprising an adjustable guide and a contact-part therefor within the longitudinal projections of said axially movable automatic air-intake valve and fuel-reservoir, and resilient means for normally automatically closing said automatic air-intake valve, substantially as described. Y

In testimony whereof, I have signed my name hereto in the presence of two subscribing witnesses.

DONALD R. WIL-LS. Witnesses:

LILLIAN BURNETT, C. TATGnNHoRsT, Jr.

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