US1132942A - Consolidated carbureter and vacuum-feed fuel-receptacle. - Google Patents

Description

W. JAY. CONSOLIDATED GARBURETER AND VACUUM'PEED FUEL REGBPTAOLB.

APPLICATION FILED JUNE 26, 1914.

1,1 32,942. Patnted marfzs, 1915..

WEBB JAY, oroHIoAeo, ILLINOIS.

CONSOLIDATED CARBURETER 'AND VACUUM-FEED FUEL-RECEPTACLE.

To all whom it may concern:

Be it known'that I, WEBB JAY, a citizen of the-United States, residing at'Chicago, in the county of Cook and State of Illino s, have invented new and useful Improvements in Consolidated Oarbureters and Vacuum- Feed Fuel-Receptacles, of which the follow ing isa specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved structure comprising a carbureter consolidated with a receptacle for liquid fuel having means for lifting the fuel supply therein'to by means of partial vacuconstruction shown and described as indicatedin the claims.

In the drawings :-Figure lis a plan view of a device embodying this invention, shown in the relation in which it is designed to be mounted in connection with the manifold of an automobile motor. Fig. 2 is a partly sectional elevation of the structure shown in Fig. 1.- Fig. 3 is a section at the line 3 -3 on Fig. '1'. Fig. 4 is a section at the line, 44, on Fig. 3', the parts being shownupon a reduced scale.

In the'structure shown in the drawings, the carbureter proper is of a familiar type, comprising a mixing chamber, 1, with its Venturi tube, 2; oil nozzle, 3; main air inlet,

4; secondary air inlet, 5, with any suitable form of regulating valve, as the butterfly valve, 6, shown. The mixing chamber is shown as having a heating jacket, 7 with connections, 7 a and 7", for any heating fluid, whether Water from the cooling jacket of the engine or hot gasesfrom the exhaust pipe. Formed integrally with the main casting, A, of this carbureter, preferably connected thereto along the height of both parts by a vertically extending web, B, is a cham' ber or. receptacle, C, constituting the receptacle forliquid fuel to supply the carbureter and therethroughthe engine cylinders. This receptacle, C, has associated with'it means by which it may be kept. supplied with liquid. fuel lifted thereinto: from a lower main supply tank by meanswhich produce apartial vacuum in the upper part-of said" receptacle aabove theli'quid: level therein The particular devices, shown for this purpose are fully described and claimed in my pending application Serial :No. 820,742, filed Specification of Letters Patent.

It consists of the elements and features of convenient course from Patented Mar. 23, 1915;. Application filed June 26, 1914. Serial No. 847,419. I

A supplemental laterally situated chamber, i

D, which communicates with the chamber,

S, near the upper end with a. pipe connecion, for producing partial vacuum in the upper 5 leading to any means not shown part of the receptacle, C. A valve, 8., within I i said supplemental chamber is adapted to close the intake from said pipe into said sup:

plemental chamber by seating upwardly The supplemental chamber has also in its' upper side an air inlet port, '9, at which there, 5

is mounted a fitting, 10, which affords a seat for a valve, '11, to close saidair intake by seating downwardly. The two'valves, and 11, are suitably connected with a float,

13, in the receptacle, C, so that when the fioatis lifted by the liquid in said chamberv to a predetermined high level, thewalve, 8,

"is closed and the valve, 11, is opened, and

when the float fallsbelow a predetermined low level, the valves are 8, beingopened and the valve, closed, thus causing the chamber posed alternately to atmospheric pressure 11, being and to the suction due to thejpartial vacuum operative through the pipe, 5

The standpipe, E, formed integrally with the wall of the reservoir, C, extends u cap plate, C of said chamber, and outside thereof 1s'open to atmospheric pressure, be-

plate by the gland member, E which is in the form of a cap having an air vent aper ture, E At thelower end of this standv reversed, the valve,

to be exas i.

. p a: therein and protrudes air-tight through the pipe it has an intake from the receptacle, C,

through a port,'1l, closed by a ball check loo;

valve, 15, seating downwardly, and therefore opening upwardly to admitthe liquidfrom the receptacle, G, into said whereinit will be lifted to the highest level =ceptacle, G, vbut cannot escape past the check stand-pipe,

' at any time'attained by theliquid in the the liquid in the trolled by a conical valve, 18, seating upwardly in said port and connected to and operated by a. float, it, in said float chamber, the float being of suiiicient volume and buoyancy to hold the valve, 18, seated against the maximum pressure of the highest column of liquid which can atany time be in the standpipc, E. A duct, '20, leads from the float chamber up through a boss, '20, in the wall of the receptacle, 0, and the end of the boss extending above the upper edge of said wall protrudes air-tight through the cap-plate, 3 being packed at its emergence by the gland member, 20 which is in form a cap having an air vent aperture, 20*,whereby it admits atmospheric pressure to the float chamber, G. From the float chamber, G, an oil discharge pipe, J, whi h has its intake mouth a short distance above the bottom of the float chamber so as to form a water-trap space in the bottom of the chamber, leads to the oil nozzle, 3, of the carbm'etcr, the flow of oil thercthrough being subject to control by a valve, 19, in the usual manner of controlling carbm'eter oil supply passages.

The parts are constructed and proportioned so that the float, H, seats the valve, 18, and cuts off the supply of fuel from the stand-pipe, E, to the float chamber when the oil in the float chamber is at the level of the top .of the nozzle. The stand-pipe, E, is calculated to contain. a sullicient quantity of liquid fuel whcnvfilled to the predetermined low level at which the float, l3, reverses the valves, 7 and 11, to supply the engine while the chamber, C, is being refilled to the high level by the operation of the partial vacuum which is produced therein by the reversal of the valves mentioned as occurring at the said low level, and thereby tained in the float chamber-always substantially at the level of the nozzle, as is the purpose and mode of operation of "carburetors equipped. with a float chan'ibcr. 1.t will be observed, also that the construction shown, although being such that the liquid in the receptacle, 0, is alternately exposed to at lnospheri-c pressure and to the lower or partial v: cuum pressure, so that alternatcl y the liquid tends to llow out of it into the stand pipe, and into it through the supply pipe, l,

et there is n 'va'riation in the press-:ure upon lloat cham er, said float chamber being at all times cxposiul to atmospheric pressure through the pipe, 20.

It will be understood that it is important in any'nicans by which liquid fuel supply to I a carburetor is maintained, that the level of the supply shall be matel y the level of the discharge mouth of the oil nozzle in the carbin'ct-or, so that there shall not fail to be -a charge of Oil down through the nonzlc atcach suction strokeof the piston, and also so that. the charge thus taken shall not be excessive, as would be for the oil will be mainat' all times approxiiable to happen if the oillevel were materia lv abo e the top of the nozzle. For this pu. se, the tloat chamber is desirably located laterally with respect to the carburetor, rather than in front of or behind it, because when thus located the oil-level in the float chamber is not changed relatively to the nozzle by the inclination of the vehicle in travel up hill and down. The relative change of level which will occur by a vehicle traveling on a side hill is of comparatively negligible importance. In view of the construction shown and lotion of the float chamber to the receptacle, C, which forsimpli'ci'ty requires the float chamber to be directly below said receptacle, the above-stated relation of the float chamber to the carbureter involves the location of the, receptacle, C, laterally with respect to the carburetcr as shown.

1. A structure adapted to be applied as a unit to an internal combustion engine, comprising a carburetor which is adapted for attaclnnent to the engine. manifold; a fuel supply 1OLQ1')lZt1ClG which is supported by rigid conncction with the carbureter, and a lloat chamber which is supported by rigid connection with the fuel supply receptacle directly supplying the carburetor; means connected with :"or alternately producing partial vacuum and atmospheric pressure therein, and for ca using gravity discharge therefrom into the lloat clunnber (luring pheric pressure in the fuel supply receptacle; means for affording atmospheric pressure continuously to the float chamber; a valve which controls said discharge into the lloat chamber, and a float in the float chamber opc alively connected with the said valve for sealing it to prevent such discharge when the liquid is at the proper level in the float chamber for supplying the carburetor.

Q. the combination with a carbureter of a fuel supply receptacle, and a float chamber auxiliary to both the. fuel supply receptnclc and the carbureter and which receives the fuel directly from the receptacle, and is conne ted with the carbureterfor discharg ing lhcrelo by gravity; the fuel supply recepta le having means for alternating sucti n and atmospheric pressuretherein, for alternately drawing the liquid thereto and permitting gravity discharge therefrom into the lloat chamber; heiloat chamber having ll'iat-iipcratcd means for preventing such discharge when the liquid in thc lloat chamber at a pre-detcrmined level suitable for supplying the carburetor.

it. 'Llhe combination with a carburetor of a fuel supply receptacle and a float chambcr auxiliary thereto, adapted for discharge connection with the carbureterfor supplying the latter by gravity; a passage by which the fuel receptacle the presence of atmosthe mechanical repassage which is normally'seated discharge into the chamber, and

' into the receptacle; means the receptacle discharges its liquid contents into the auxiliary chamber; a valve in said and adapted to be opened by the flow of 1i uid therethrough toward the auxiliary c amber; a second valve controlling said passage at its a floatei'n said chamber connected to said second valve for seating the same to prevent such dis charge when the liquid in the float chamber is at a predetermined level suitable for supplying the carbureter.

1. In combination with a float chamber, a liquid supply receptacle above the float chamber, a liquid supply connection leading for producing alternately atmospheric pressure and partial vacuum in the upper part of the receptacle;

a stand-pipe communicating with the recep tacle at the lower part and extending above the predetermined high liquid level thereof and continuously exposed to atmospheric pressure; a check valve controlling communication of said stand-pipe with the receptacle, adapted to admit liquid from the receptacle to the stand-pipe and prevent-its return to the receptacle, connections from the stand-pipe above the check valve. 1ead-.

ink into the float chamber, and a float-controlled valve in said chamber {or controlling the discharge from the float chamber.

comprising a carbureter adapted for mountingin fixed position'in connection with the' stand-pipe into the In combination with an internal combustlon engine of an automoblle, a structure 1 manifold, a liquid fuel receptacle mounted my hand, at Chicago, Illinois, this 24th day of June, 1914. v I I WEBB JAY. Witnesses:

EDNA M. MAoINT0s LUCY I. STONE.

carbureter nozzle, and

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