US983247A - Carbureter. - Google Patents

Description

Patented .13.11.31, 1911.

H. A. MILLER.

CARBURETEB..

APPLICATION FILED MAB.. 3, 1910.

...5.1.11 @www1/# W 11 HARRY A. MILLER, OF LOS ANGELES, CALIFORNIA.

CARBURETER.

Application filed March 3,

To all whom it may concern.'

Be it known that I, Hanni' A. MiLLnn, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of Calitornia, have invented a @new anld useful Carbureter, of which the following is a specification.

lThis invention relates to carbureters, and the main object of the invention is to provide for mechanically operating the needle lvalve ofthe nozzle through the medium of the air valve, whereby the amountot opening of the needle valve is directly propor' tioned to the amount of opening of the air valve, and to provide means `for varying the time ot opening of the needle valve with rela-tion to the air valve. I accomplish this by means of an adjustable cam shaped spring which actuates a rock lever, the latter being in operative relation to the needle valve. i

Another object of the invention is to provide -for mechanically opening the air inlet simultaneously with the throttle valve and to open the air inlet an ,amount corresponding to the amount the vthrottle valve. is: opened, and to hold thesaid air inlet opened while the throttle valve is open, thereby not depending upon suction and inrushingeair 30 to open the air valve, with the advantage that fluttering of thc air valve is avoided, thus making the carbureter of special utility with engines having two cylinders or less where the intervals between impulses of the engine are of suilicient duration to produce appreciable fluttering movement ot .the air valve.

Other objects and 'advantages will bev brought out in the following description.

' Referring vto the drawings z-Figure 1 isv a cross sectional View through the carbu-l roter. Fig. 2 is a bottom view of the carbuf reter.

ward the nozzle 6 which is arranged-cenbeing provided with a whichis also central ot thel trally of the sleeve 2, fuel passage 7 sleeve 2 and which is supplied from a ioat Specification of Letters Patent.

1910. Serial No. 547,157.

Patented Jan,` 331, 1911,

valve chamber 8. The upper end of the nozzle G has a cup shaped mouth 8 which surrounds the tapered end of the needle valve 9, the latter being supported by a valve Arod 10 formed with a goose-neck and extendingdown through atube 11 in which a coil spring' 12 is arranged, the spring 12 being connected at its lower end to thesteni 10 and the upper lend of the springbearing against the wall at the upper end of the tube 11, whereby the stem 10 is moved in a downward direction tending to close the needle valve 9.

The lower end of the valve stem 10 rests against an adjusting screw 13 in the end of a'rock lever 14 pivoted at 15 and provided `with a roller 16 which is adapted to ride along a cam shaped spring 17, the lower end of spring 17 being forked and engaging a groove 18 in an adjustin scr-ew 19. The cam spring 17 is secured to a racket 20 which pro-v jects through an opening 21 in the lower portion oit' the Carloni-eter and is attached to the conical air valve 5 so that as the air valve 5 is moved in ,either direction the spring 17 is bodily moved therewith and acting aga inst roller 1G operates or controls the position of the rock lever 14, thereby adjusting the position of the needle valve 9. i

Q2 designates the throttle valve which is/ arranged above the mixing chamber 3 and controlled by lever 23. A link 211'is connected at its upper end to the throttle valve 22 and at its vlowerend is-conuected to the sleeve 2, so that the sleeve Q and air valve 5 are moved longitudinally wh enever the throttle valve Z2 is adjusted. valve 22 is in its extreme open position, as shown in Fig. 1, the'air valve 5 is4 in its highest position,'giving the fullest opening for the admissipn of air which enters around aspreader 25 which arranged below thc nozzle 6. As air is sucked into the carbureter it enters past the spreader Q5 and is deflected toward the nozzle by the conical air valve 5.' rlhe amount of air which entersis,`

air valve 5 will occupy its lowest position, as

Aindicatedin dotted lines, leaving onlythe slightest opening between the spreader 25 and air valve.

As the air valve 5 approaches its lower or When the throttle substantially closed position, the caiffspring/ 17 lowers therewith and permits the rock means of adjusting screws 19, it is possible to nearly close' the air valve and still leave the needle valve 9 open suiiicient to permit fuel to pass therethrough. As the air valve rises and opens, the cam spring 17 lifts and forces out. the end of the lever 14, thereby lifting the stem 10 and opening the needle valve 9, permitting greater flow of fuel. For a rich mixture, that is, one containing a large proportion of `,'asolene to air, the adjusting screw. 18 may be. adjusted to secure a quick and fullopening of the needle valve 9 whenever the air valve 9 opens.

'By screwing the spreader 25 up or down, the amount of normal air permitted to enter, with the tube 5 in lower position, may be regulated. It is thus possible to adjust for a mixture rich with gasolene, if desired, for starting or sl'ow running, by nearly closing A, the spreader or -/vice versa.

What I claim is: Y.

1. ln a carbureter, a mixing chamber, a nozzle discharging into the mixing chamber, an air valve below the nozzle for admitting air to the mixing chamber, a throttle valve above the nozzle, a connection from the throttle valve to the air valve for mechanically opening the air valve in unison with the throttle valve, a needle valve for said nozzle, a lever bearing against the needle valve, and cam means carried by the air valve for operating said lever to actua-te the needle valve.

2. ln a carbureter, a mixing chamber, a

nozzle discharging into the mixing chamber, an air valve below the nozzle for admitting air to the mixing chamber, a throttle valve,

above the nozzle, a connection from the throttle valve to the air valve for mechanieally opening the air valve in unison with the throttle --valve, aneedle valve for the- 3. In a carbureter, a mixing chamber, a j

nozzle discharging into the mixing chamber, an air valve below the nozzle for admitting air to the mixing chamber, a throttle valve above the nozzle, a connection from the throttle valve to. the air valve for mechanically opening the air valve in unison with the throttle valve, a needle valve for the nozzle, a pivoted lever, an adjusting screw in one end of the lever bearing against the stem of said needle valve, a screw carried by the air valve, a spring having an adjustable end engaging said screw, and a roller in the end of said lever traveling on said spring.

4. In a carbureter, a mixing chamber, a nozzle discharging i'nto the mixing chamber, an air valve comprising a sleeve with a flared lower end slidable in the mixing chamber, and a spreader below the said flared po'rtion and adjustable toward and from the same to vary the size of the air inlet..

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 22 day of February 1910.

HARRY A, MILLER.

In presence of- G. T. HAGKLEY, FRANK L. A. GRAHAM.

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