US988638A - Carbureter. - Google Patents

Description

J. HARRIS. OARBURETER. APPLIoATIoN FILED JUNE se. moa.

,Patented Apr. 4, 1911 IIN IA '////////////////4 JOHHARRIS, 0F CLEVELAND, OHIO.

CARBURETER.

. Specification of Letters Patent.

Patented Apr. 4-1, 191.1.

Application led June 26, 1908. Serial No. 440,480.

'l'o all whom 'it may concern:

nular ledge 8 preferably cast with Ithe bot- Be it known that I, J oms` Hamas, a cititom 3, such casing being provided with a' rezen of the United States, residing :it Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and 'useful Improvement in Carbureters, of which the following isa fullclear, and exact description, reference being had to the accompanying drawings.

This invention Vrelates generally to devices for producing a mixture of air with fluid fuel, and more especially to devices, in the nature of carbureters, foi` producing mixtures of air with liquid fuel which is in a vaporous condition.y

VIt has forits general objects to simplify the construction of such devices; to provide a mixing device wherein the proportions ofA air and fluid fuel may be maintained con-y stant after the air and fuel ports have been adjusted, but which will allow for the convenient adjustment of such portsv to vary such proportions when desirable; and to providea construction whereby fluid fue]r may be suppliedunder constant pressure to its p ort but without danger of flooding the devlce.

More limitedly, the subject of this application is an improvement upon that described in my co-pending application, filed Ma 9th, 1908, Serial N o. 431,774.

till more specifically, the invention consists in certain details of construction which are illustrated in the drawings hereto annexed, wherein- Figure 1 represents a vertical longitudinal y sectional View taken through a carbureter constructed in accordance `with my invention; Fig. 2 represents a. longitudinal sectional view corresponding to the line 2-2 of Fi 1; and Fig. 3 represents a plan view of a detail of the valve-operating mechanism. Describing the parts by reference characters, 1 denotes a casing which is provided at its top with a connect-ion 2 to which the engine suction pipe may be attached. This casing is rovided at its bottom with a 'plate 3 remove ly fitted to the body of the'casing, as byscrews t which extend through the bottom plate and are threaded into llugs 5 on the casing. The bottom plate 3 1s provided near one end thereof with an inlet connection 6 through which liquid fuel may be supplied to a float chamber. This cham ber may be conveniently formed by a casing 7 the lower end of which fits within an anmovable cover 9.

1.0 denotes the lfloat, said float carrying an upwardly seating conical valve 11 on a valve stem 12. This valve stem extends through a guide 13 which is mounted on thebottoni plate above the port. 14 and is rovided with a suitable number of lateral ischarge orifices 15.,

Adjacent to the end opposite connection 6, plate 3 is provided with an upwardly pro jeeting hollow boss 16, preferablyl integral therewith, the interior of which boss coinmunicates with the float chamber 7 by means of a port 17 extending through the bottoni plate and aA tissage-way 18 whichl connects said-port wit the float chamber. The boss 16 has therein an inverted truste-conical valve seat and is provided with a ort conof an elongated horizonte slot 19.

sistrg 'The ischarge end of this slot is inclosed by a chamber 20. This chamber extends upwardly to a point above the level of the liquid fuel (indicated at 20") in the float chamber within easing 7 and .is open at its upper end.

21 denotes a valve pluo` which is mounted within the valve chamber formed within the boss 1G. This plug forms a snug fit within'the inner suiface of 16 and is rovided withan internal chamber 22 projecting above the port 19. Within this chamber there is mounted a tube 23, the lower end of which is secured Within the lower end of the chamber, as by means of a bushing 24:, and the upper end whereof projects above port '19. The upper end of tube 23 is spaced from 'the plug 21 is provided with an operatingstern 26 closely fitted within a sleeve 2T which projects through the top of the casing l, forming a close tit therewith. This'sleeve is provided with an annular ledge 28 and a' washer 29, between which there is interposed 25 -I l arm or handle 37 which is rotatably mounta spring 30. The washer 29iffbears against The sleeve 27 is provided with a pair of.

arms 3l, which project outwardly and downwardly therefrom, their lower ends fitting between lugs 32 on a rotary valve 33. This valve is in the shape of an annular disk and Y is rotatably mounted between the boss 16 `and sleeve 27 to move in unison.

and an annularledge 34 which is preferably integral with the bottom plate 3. The valve is provided with arc-shaped ports 35 adapted to register'with corresponding ports 36 in the bottom of the casing. The arc- shaped ports 35 and 36 are so arranged that the air valve will begin to open simultaneously with the opening of the fluid fuel valve and will be fully opened when the latter valveis also fully opened. j

For the purpose of operating the air and liquid fuel valves, I provide an operati-ng ed upon the upper end of sleeve 27. -The upper end of valve stem 26 projects above the upper end ofthe sleeve 27 and has rigidly mounted thereon a segment 38 having an arc-shaped slot 39 by means of which an adjustable connection is formed between the valve stem 26 and the sleeve 27 through a screw 40, which extends through slot 39 and is threaded into 'the handle 37. The `screw 40 is provided with a -shoulder 4:1 which, when thescrew is tightened, bears against the segment '38 and causes 'stem 26 As stem 26 carries the valve plug 21 andsleeve 27 the operating arms for the air valve, it will be apparent that the air and fuel valves may be conveniently adjusted whenever desired and that, after having been so adjusted, they will move in unison.

By the construction herein illustrated and' described, numerous advantages may be secured. For instancethe liquid fuel supplied through the port 19 is under the constant pressure of the head due to the'level of the liquid in the float chamber 7. At the same time, there is no possibility of flooding the mixing-chamber formed within the casing l and of wasting tlie liquid fuel, owing to the provision of the chamber which incloses the discharge end of the slot 19 and extends above the level of the liquid in the -loatchamber 7. With this constructiom` the throttle valve may be left open when it is desired to i crank up and still -not waste the gasolene. Furthermore, the chamber 20will contain just enough liquid fuelr to prime or start a'multi -cylinder engine.'

The Vair valve construction is particularly simple and efficient. By its use, whistling casing lhaving an upwardly projecting valvel seat provided with a lateral discharge port, a valve rotatably mounted in said seat and having a port adapted to register with the former port, a oat feed chamber, connections for supplying liquid fuel thereto, connections between said chamber and saidvalve, said float chamber being arranged to maintain a liquid level above the lateral port in the valve seat, and la vert-ically eX- tending outlet communicating with the lat ter port and extending above the level of the liquid in the float chamber.

In a earbureter, the combination of a casing having an upwardly projecting valve seat thereimsaid valve seat being provided with a connection for supplying liquid fuel to the lower portion thereof, said talve seat being provided with a port extending through its wall, a rotary valve mounted in said valveseat and provided with a 'port adapted to register with the former port and provided with a chamber extending up.` wardly from the bottom thereof to a point above the port in the valve seatysaid cham ber communicating with thelower portion of the valve seat and with theport in said valve, and connections for supplying liquid,

fuelto said chamber at apoint above the said ports. w

3. In a carbureter, the combination of a casing having a valve seatprovided with a port and having at its lower end a connection for liquid fuel, a rotary valve in said seat provided with a chamber extending up wardly 'from the bottom there f and with a port adapted to register with. the former port and communicating with said chamber,

a tube mounted in the lo'we. end of said kchamber and extending above said ports and communicating at its lower end with the lower portion of the valve seat, and connections for supplying liquid fuel to the lower portion of said seat.

4lio

4. In a carbureter, the combination of a4 casing` having a valve set provided with ay lateral port, a rotary valve in said seat provided with a chamber extendingnpwardly from the bottom 'l thereof and witha port adapted to registerwith the. former port and communicating with said chamber, a tube mounted in the lower end of said cham valve, an adjustable connection between said ber and extending above said ports, and connections for supplyin f liquid fuel through said tube to said chamlie and thence to said ports.

5. In a carbureter, the combination of a casing having therein an upwardly projectingvalve seat provided with a lateral port and connected at its lower portion with a source of fuel supply, a rotary valve mounted in said seat and having an upwardly extending chamber communicating at its lower end with the supply to the valve seat and extending above the lateral portand provided with a port adapted to register with the formerport and communicating with lsaid chamber, a float feed chamber arranged to maintain a liquid level above the top of the former chamber, connections between said float feed chamber and the valve seat, and means for preventing the flooding of the casing through the port in the valve seat.

(l. In a carbureter, the combination of a :asing having an upwardly extending valve seat and one or more segmental air ports located adjacent to said seat, a rotary valve in said seat, a stem for said valve,asleeve on said stem, a rotary valve surrounding the valve seat andprovided with one or more segmental ports adapted to register with the first mentioned port or ports, a pair of arms projecting downwardly from said sleeve and engaging the. last mentioned valve, a connection between said stein and said sleeve, and means for supplying fluid fuel to the iirst mentioned valve.

'l'. ln a carburetor, the combination of a casing having in the bottom thereof an upwardly projecting valve seat and having one or more air ports in the bottom adjacent to said seat, a rotary valve mounted in the valve seat and having an operating stem, a, valve surrounding the valve seat and co-acting with the port or ports in the bottom of the casing, a sleeve mounted on the valve stem, one or more arms carried by said sleeve and engaging the last mentioned sleeve and said valve stem, and means for suj'ijilyiug fluid fuel to the lirst mentioned valve.

S. In a carburetor, the coi'nbination of a casing having a valve seat therein and provided with one or more air ports in the base thereof, a rotary valve mounted in the valve seat and having a stein projecting through the casing, a sleeve mounted on said stem and also projecting through said casing, a valve having ports cooperating with the ports in the base of the casing, a connection between said sleeve and the last mentioned valve, an arm mounted on the sleeve, a Segment mounted on the valve stem adjacent said sleeve and having an arc-shaped slot casing ward y charge outlet,

therethrough, a screw extending through said slot and threaded into said arm, and

means for supplyingiiuid fuel to the first mentioned valve. v

9. lIn alearbureter, the combination of a having a valve seat projecting upfrom ,the bottom ,thereof and provided adjacent to said seat with one or more air ports, a valve mounted in said seat and havlng a stem projectlng u wardly through the casing, a sleeve mounte on said stem, a rotary valve coperating with the port or ports in the bottom of the casing, one or more arms connecting the last-mentioned valve and the sleeve, a ledge on said sleeve, a washer on said sleeve adapted to engage the inner surface of the top of the casing, a spring interposed between said ledge and said washer, an adjustable connection between said sleeve and said valve stem located above said casing, and means for supplying Huid fuel to the first mentioned valve.

10. In a carburetor, the combination of a casing having therein a fluid fuel valve prov vided with a stem projecting through the casing, a sleeve mounted on said stern, a rotary air valve, one or more arms connecting the last-mentioned valve and the sleeve, a

ledge on said sleeve, a washer on said sleeve adapted to engage the inner surface of the casing, a sprmg interposed between said ledge and said washenand a connection between said sleeve and said valve stem.

ll. In a carbureter, the combination of a casing having therein an upwardly projecting valve seat provided W1th an elongated lateral discharge slot, a valve rotatably mounted in said seat and rovided with an elongated dischar e slot a apted to' register with the former s ot, a liquid fuel reservoir communicatingr with said valve and havin means for mai itaining therein a liquid lev'e above said slots, a chamber inclosing the discharge slot in the valve seat and extending above the maintained level in the reservoir, and means for supplyin air to said casing.

12. In a carbureter, t 1e combination of a casing havin an upwardly projecting valve seat provide 'with an elongated lateral disa rotary valve in said seat provided with an elongated discharge outlet adapted to register with the former outlet, a liquid fuel reservoir communicating with the said valve and having means for maintaining therein a supply of liquid fuel above said outlets, a chamber communicating with the outlet. in the valve seat and extending above the level of the liquid in said reservoir, an' air valve for controlling the flow of air into said casing, and connections for operating the air and liquid fuel valves m unison. t

13. In a carburetor, the combination of a casing having a. valve seat therein provided with a discharge port, a valve rotatably mounted in said seat and provided with a port adapted to register with the former port, a liquid reservoir communicating with said valve seat and provided with means for maintaining therein a liquid level above said ports, 'a chamber communicating with the port in the valve seat .and extending above the `level of the liquid in the reservoir, an air valve for admitting air to said casing and connections for operating the air and the liquid fuel valves proportlonally.

14. In a earbureter, the combination ofl ai easing having therein a valve comprising-a valve seat provided with an elongated lat eral discharge outlet and a valve body ro-f tatablyemounted withrespeet yto said seatE valve outlet through which the liquid fuel is discharged and extending above the mainltained level in the reservoir, and a valve for .controlling the supply of air to said casing.

taining therein a liquid level extending.

above said outlets, a chamber inelosing the valve outlet through which the liquidfuel isdischarged and extending above themaintained level in the reservoir, and a valve for controlling the supply ofOair to` said casing. In testimony whereof, I hereunto affix' my signature in the presence of two witnesses. JOI-IN HARRIS. l/Vitnesses:

J. B. HULL, BRENNAN B. WEST.

Copies of this patent may be obtained for ve cents each, bv addrs's'ng the Commissioner of Patents, Washington, D. C. I

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