US1080696A - Carbureter. - Google Patents

Description

w. P. HUGUELET.

GABBURETER.

APPLICATION FILED snr'r. 27, 1912 Patented Dec.9, 1913.

n u E w n n 3 a a moaeo w. P. HUG UELET.

CARBUBETER. APPLICATION FILED SEPT. 27, 1912.

Patented Dec. 9, 1913.

8 SHEETS-SHEET 2.

nvenbw Q W. P. HUGUELET.

GAHBURETER.

APPLICATION FILED SEPT.27,1012.

Patented Dc. 9. 1913.

3 SHEETS-SHEET 3,

q ii'neueo UNITED STATES PATENT OFFICE.

WILLIAM P. HUGUELET, OF CHICAGO, ILLINOIS, ASSIGNOiR, BY MESNE ASIGNMENTS TO MUIR COMPANY, INCORPORATED, OF BALTIMORE, MARYLAND, CORPORATION OF DELAWARE.

CARBURETER.

Specification of Letters Patent.

Application filed September 27, 1912; Serial No, 722,580.

T 0 all whom. it may concern Be it known that I \VILLIAM l HUGUELET, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Carburetors for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its'object to pro vide an improved carbureter for internal combustion engines, and consists in the features of construction and combinations of parts hereinafter fully described and particularly claimed.

In the accompanying drawings illustrating the invention: Figure 1 is a v ew in side elevation of a carburetcr embodying my invention. Fig. -2- is a central vertical longitudinal section of the same. Fig. 3 is a fragmentary detail section partly in elevation on the line 3-3 of Fig. -2. Fig. 4- is a fragmentary detail horizontal section on the line 44 of Fig. --1-. Fig. 5 is a fragmentary detail horizon tal section on the line 5-5 of Fig. -1-..

The invention relates particularly to that class of carbureters for internal combustion motors in which the supply of hydro-carbon liquid is controlled by a valve and wherein means are provided for automatically mechanically actuating said valve so that the supply of liquid may at all times be substantially properly proportioned to the volume of air passing through the carbureter.

The proportions of air and hydro-carbon at which the greatestmotor efliciency is attained varies with the atmospheric conditions such as humidity and temperature and is also dependent upon the specific gravity of the liquid and its freedom from water, It is desirable that these variations in conditions affecting motor efficiency may be readily met, and the object of my invention is to provide means whereby this may be accomplished with the utmost ease and despatch.

The carbureter comprises the usual reservoir 1, sometimes also termed float chamber,

which is connected by means of the pipe 2 with a source of so pl of hydrocarbon liquid, the latter being admitted to said chamber 1 through the. openin 3 in the bottom thereof which is contro ed by the valve 4. The latter is provided with ci a' stem 5 enlarged between its ends to provide annular shoulders 6 and 7 respectively on 'said stem. Between the shoulder 7 and the lower end of a hollow plug 8 through which the upper end portion of the valve stem 5 passes, a helical compression s ring 9 is disposed which n01- mal'ly hol s said valve 4 on its seat. The said plug 8 is disposed in the upper end of a tube 10 having an externally threaded upper end portion which enters the flanged threaded opening 11 in the upper wall of said reservoir 1 and which at its lower end is integral with the pairs of lugs 12 which are also integral with the removable bottom 13 of said reservoir in which the opening 3 is provided. Pivot-ally mounted between snidrespective pairs of lugs 12 are levers 14 extending in diametrically opposite directions, and the inner ends of which are adapted to engage the annular shoulder 6 at the lower end of the enlarged portion of said valve stem 5. The othe and longer ends of said levers 14 are d' sed in the path of the float 15 which is ring shaped, and which, when it rests upon the outer ends of the levers 14, causes the latter to turn on their pivots to raise the valve stem 5 and thus open said valve 4 to admit hydr0- carbon liquid to said reservoir 1. A plunger 16 which is normally supported at the upper limit of its movement by means of the spring '17 passes through an opening in the upper wall of the reservoir 1 and may be depressed against action of said spring 17 to forcibly depress the said float 15 when it is desired to admit more than the normal quantity of hydro-carbon liquid to said reservoir 1.

At one side of the reservoir 1 is a vertical cylindrical passage 18 which connects with a lateral inlet 19 for air which is controlled by the throttle valve 20 in' the usual manner. Projecting upwardly from the bottom of said chamber 18 is a discharge pipe 21 for the hydro-carbon liquid, the latter being connected by means of the-.horizontal-passage 22 with the lower portion of the reservoir 1; The said discharge pipe 21 extends to a point slightly'higher than the normal liquid level in the reservoir 1 and, upon the formation of a partial vacuum in the vicinity of the outlet end thereof, isadapted to discharge hydro-carbon liquid into said passage 18. The latter connects by means of the inclined passage 23 with the passage 24 leading to the manifold or other connection with the suet-ionend of the engine c tor or cylinders, and which is controlled by the throttle valve 25 in the usual manner. At one side of said passage 24 is an opening through which air is adapted to be admitted theretofsaid opening bein controlled by the mushroom valve 25, t e stem 26 of which is horizontally disposed and passes at one end through 'a plug 27 disposed in the diametrically opposite wall of said passage 24. The said plug 27 is threaded 'insaid opening and between the same and the valve 25 there is interposed a helical compression sprin 28 which serves to maintain the valve 7 25 normally closed. The said plug 27 may be turned to regulate the pressure exerted by said spring 28 on said valve in a well.- known manner. The said valve stem 26 also projects beyond the other or front face of said valve 25 and passesthrough a guide 5 eeve or flange 29 carried upon the spokes 3 of the plate 31 secured around the opening controlled by said valve 25; The outer end portion 32 of said valve stem 26 is preferably rectangular in cross-section and is provided with a longitudinal" slot 33 I in which a cam member 34 is pivotally mounted. The said member 34 is provided at its outer end, that is, the end farthest removed from its pivot, with an inclined face or edge 35 which is adapted to be engaged by the inner end of a set screw 36. mounted in a threaded central opening in theouter end of the rectangular portion 32"of said valve stem 26 The said inclined face 35- ofsaidcammember34 is adapted;to be supported at different elevations uponQthe inner end portion of sa id set screw 36-,thus causing the upper edge pr. face of said cam member to pro ect varying distances; above and at various inclinations relatively to the upper face of said portion 32 of said valve stem. On

the outer end of the latter there is providedan L-shaped projection 37 to the outer end of which a flat spring 38 is secured, the said spring being adapted a-t its free end to engage in the notches 39 of thehea'd 40 of said set srrew 36 and tli us o tov prevent accidental rotation of the latter. A I Such accidental rotation. is further prevented bymeans of' the lock nut 41 in th usualand ivell -ltnown manner. The discharge end of said discharge pipe 21 is controlled "by 'avalve 42, the stem of which extends upwardly through the opening in'a plug "43 inounted in a threaded openingi'n the upper wallof the assage 18. The said plug/carries an annuar flange 44 in the upper end of which a plug 45 is mounted ,and through which the stem of 'said valve 42 also passes. On the latter there is mounted a collar 4tivbetween spring 47 is disposed which serves to maintain the 'valve 42 normally at the lower limit of its movement. Mounted upon the 7 upper end of the stem of said valve 42 is a head 48 which is rectangular and is pro vided with a vertically disposed rectangular slot 49 through which the rectangular outer end portion 32 of the valve stem 26 passes. In the upper end of said head 48 there is mounted a set screw 50, the inner end of which bears upon the upper edge or face of the cam member 34 in vertical alineinent with the pivot thereof or upon the contiguous part of the upper face of the part 32 of the valve stem, said set screw. being held against rotation by means of the flat sprin 5.1 in the usualmanner. By means of sai set screw 50 the normal position of the valve 42 relatively to its seat is adjusted prefer-' ably to maintain said valve raised slightly off its seat so that in startipg the motor and while the latter is running at low speed 'a .sutlicieni quantity of hvro Carbon liquid may be fed thereto to permitoperation thereof.

It is \Yell-lmmvn that as the throttle valve 25 is opened the engine or motor gains in speed and as it gains speed the partial vacuum formed in the passage 24 will cause the v valve 25 to open, particularly the valve 20 is partly closed. The degree or extent to which the said valve 25 opens, depends, of:

vcourse, upon the degree of vacuum formed in said passage 24. The opening movement ,of the valve will, of course, cause the inclined upper face or edge ofthecam member 34 to raise the set screw 50 and'thereby the In operation it is customary to fix the positionfof the valve 42 so as to accommodate ,the same to the needs of the motor in starting and running at its lowest speed so that after the said set screw 53 has been once adj'usted it is not afterward required to be again manipulated except to the extent necessary totake up wear. The only other adjustn ent required is to regulate the feed of the hydro-carbon liquid as the motor runs at higher speeds. This is accomplished by turning the'set screw 36 more orless in either direction to adjust the inclination of the cam member 34 whereby the valve stem 42 will be given a longer or shorter stroke,

as may be desired.

I claim as my invention: I

1. In a carbureter, a carbureting passage having a primary air-inlet port, a mixing passage off-set relatively to said carbureting passage and communicatin therewith, a fuel supply nozzle in said car ureting passage, an auxiliary air-valve in the mixing paszle, the stems of said valves intersecting one another, and .co-actin interengaging means on said respective va ve-stem'a for transmitting movement from the airwalve to the nozzle valve.

2. In a carburetor, a carburetlng passage. having a primary air-inlet port, a mixing 5 passage off-set relatively to said earbureting e passage and communicating therewith, a fuel supply nozzle in said carburcting passage,

an auxiliary air-valve in the mixing passage, 5

a valve controlling the, fuel supply nozzle, the stems of said valves intersecting one another, and a cam-member carried by the airvalve stem and engaging the fuel valve'slem for transmitting movement of the airw'alve to the fuel valve.

3. In a carbureter, a carbureting passage having a primary air-inlet port, a mixing passage off-set relatively to said carbureting passage and communicatin therewith, a. fuel supply nozzle in said car )ureting passage, an auxiliary air-valve in the mixing passage, a valve controlling the fuel supply nozzle, the stems of said valves intersecting one another, a cam-member carried by the air-valve stem and engaging the fuel valve'stem for I transmittin movement of the air-valve to z the fuel va ve, and means on. said air-valve stem for ad usting said cam-member for 4. In a carbureter, a normally automatically closed fluid-pressure actuated reciprocable valve controlling an air-inlet port, and havin a stem,-a projection on said stem external l y of the carburetor housing havin an inclined face, means for adjusting sai projection for varying the' cant of its in: clined face, a reciprocable valve controlling the supply of hydrocarbon liquid and having a stem provided with a longitudinal slot through which thestem of the air-inlet valve 5 passes and throu h which said projection travels, a part 0 said stem of said valve l controlling the liquid supply disposed in the l path of the inclined face of said projection for transmitting movement of the firstl named to the last-named valve.

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

WILLIAM P. HUGUELET. 1 lVitnesses:

R. W. Lorz, Ecoexs H. HUGUELET.

I varying the throw of the said fuel valve. l

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