US985122A - Carbureter. - Google Patents

Description

H[ W. ASHMUSEN. CARBURETER.

APPLICATION FILED 11011.24, 1909.

985,122. Patented Feb. 28, 1911.

I v i HI/144157076 us HENRY W. ASHMUSEN,

or KINGS PARK, NEW YORK.

CARBURETER.

7 Specification of Letters Patent. Application filed November 24, 1909. Serial No. 529,832.

Patented Feb. 28, 1911.

To all whom it may concern:

Be it known that I, HENRY AsHMUsEN, citizen of the United States, residing at Kings Park, Long Island, in the county of Suffolk and State of New York, have inveu'tedcertain new and useful Improvements in Carbureters, of which the follow ing is a specification.

My invention relates to carbureters for internal combustion engines, and particularly to that type of carbureter wherein liquid fuel such as gasolene is volatilized by a wick or mass of absorbent material over which a stream of air is passed, the air in its passage taking up the'vapor of the fuel.

One object of my invention is to provide a carbureter of this character in which a small amount of fuel will be gathered around the wick at its point of projection into the vaporizing chamber. I

Another object is the provision of an air valve which shall direct the air into intimate contact with the wick, so that it may take, up its full charge of fuel, and which shall also act to control the amount of air passing into the vaporizing chamber. i

My invention consists in the arrangement of parts and details of construction set forth in the accompanying specification. and more particularly stated in the claims appended.

For a full understanding of the invention. and the merits thereof, and to acquire a knowledge of the details of construction, referenceis to be had to the following description and acc mpanying drawings, in which: Figure l i a longitudinal vertical section of my carbureter; and, Fig. 2 isa front elevation thereof.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters. Referring to these figures, 2 designates a fuel reservoir or chamber of any desired character, but shown as cylindrical and as having closed ends, the chamber being connected by the feed pipe 3 with any desired fuel supply (not shown). The upper portion of the chamber 2 is provided with a longitudinally extending relatively narrow slot 4 through which passes the longitudinally extending vaporizing wick 5 of any desired material, the wick being preferably deep enough to extend down tothebottom of the chamber 2, and therefore to draw up any fuel which may be within the chamber construction, to a valvewhose free edge shall rest beyond 2. Any desired means maybe used for regulating the depth of fuel in the chamber 2. Preferably, however, it is kept at the level shown by the dotted lines in Fig. 1.

Disposed above the chamber 2 and formed in any suitable manner is the vaporizing chamber 6, open at both ends, one end being open for the entrance of air, and the other connecting Withthe feed pipe of the engine.

The bottom of the chamber 6 is inclined downward from its opposite ends toward the mouth of the slot 4 so that the bottom walls of the chamber 6 intersectthe walls of the chamber 2 on each side of the slot 4. Preferably,one of the walls forming the bottom of the chamber 6 is provided with prongs 8 which engage with the wick 5 so that the Wick is held with a portion of it projecting through the slot 4 Any suitable means may be provided, however, for holding the wick in its proper position. The upper wall of the chamber substantially con at 9, and is cylindrical in section for enand into the chamber 6."

orms in shape to that of the lower wall, and the extremity is enlarged, as

gagement with the. feed pipe of an internal" combustion engine, the outer face of the enlarged portion being screw-threaded, to this" end, as at 10.

Mounted within the chamber -6 is the downwardly inclined valve 11 which is pivoted, as at 12, at its upper edge and which at its lower edge preferably rests upon the bottom 7 of the chamber 6 just beyond the top of wick 8, so as not to comein contact with the Wick. While this is the preferable I do not wish to limit myself the wicking, as the valve might be arranged so that its free edge would rest upon the floor of the chamber 6, slightly forward of the wicking; Means must be provided for yieldingly holding the valve with its free edge in contact with the floor of the 'chamher 6, and to this end I provide aspring 14 which is adapted to yieldupon an indraft of air caused by the suction stroke of the engine, so that-the valve may open. It is necessary, .however, to alter thedegree of strength of the spring to suit various circumstances of running.- Hence'I provide a screw pin which engages with a spring and by which its tension may be increased or decreased. In the drawings the spring 14 is attached at its rear end by a screw 14* to the wall of the chamber 6, the spring spring I use then extending along the chamber and into the opening through the same and, into contact with the valve 11. For adjusting this a screw. pin 13 which passes through'the s ring and into the wall of the chamber. It 1s obvious that bythis means the strength of the spring may be adjusted so" as to increase the pressure on the valve,

and thereby .regulate ing movement according to any particular circumstance of operation.

The operation obvious. The wicking will volatilize the liquid fuel, and the air passing-in: at the charged with I While it'would be entirely possible to have open end. of the chamber 6 will be forced downward by the deflecting valve 14 into intimate contact with the protruding end of the wicking, and .will thence pass to theenchamber open gine fullycharged with fuel.' It will be seenthat the valve 11 not only acts 'as a valve to limit and control the amount of air mixed with the charge upon its suction stroke, but that it also acts as aldeflector whereby the air is directed immediately over the upper end of the'wicking 5 so that the air will be more fully and thoroughly thevaporized fuel.

I the floor of the chamber 6 extend in a of the chamber,

straightline, I preferto make it of the shape shown, for the reason that the bottom wall convergingas it does to the wick 4, forms to a certain extent a trough engine is stopped, 'k'ee s the wick moistened wit 'whereby a small amount of liquid fuel will be "gathered around the. wick where it protru es into the chamber 6. This,-when the the upper end of gasolene so that a full supply of gasolene vapor may be se- 40 I cured upon the first suction stroke ofthe engine. Y I

In ractice I havefound'that my .improve carbureter is extremely effective, and that'a' great degree of control can be secured by regulating the movement of'the valve '11,- as previously described.

I have. found in practice that for carbureters to be used on motor vehicles, capil-' lary attraction-is much-better as a means of vdisseminat'ing vapor and mixing it with the a r thfn are any sprayingdevlces, for the reason the-fuel to splash and con- As a- -consequence, it" is sprayed unequally.

By supplying. the fuel to the air througha wick, there'is no chance of the "fuel beingpsplashed or "rendered unsteady, no matter how unsteady the vehicle itself may be, and

hence better carburation is secured. It will v be seen that the valve 11 forms a deflector at slow speeds, which carries the air into intimate contact with' the upper end of the wlck, which would not be the case were no deflector. used, but the amount of. air ad-.

the degree of its .openof I my invention will be plying fuel to the that the unsteadiness of the motor xvjehlcle causes -sta-ntlyvary in level within the carbureter. 55 I esaiaa mitted'to the carbureterdecreased by a valve located near the mouth of the carburetor. The valve is so arranged, however, that-1t permits a full charge of air when desired,

as in running athigh speed.

Having thus described the is claimed as new is 2-- I 1. A-carbureter including a vaporizing chamber open at one end for the admission of air and at the othenend for the outward passage 'of' air, a wicking in said chaminvention what her 'extendlng entirely across the same,

means for supplyin liquid fuel to the wicking, and a valve, t e lower edge of which vsaid deflector having its lower'edge parallel to the upper end of the wick.

' 3. A carbureter including a fuel chamber, .a vaporizing chamber having .an air inlet at one end, a wick in the fuel chamber extending into the vaporizing chamber, the floor of said vaporizing chamber extending downward, from opposite ends toward the wfwictr to form a pocket for the collection of 4. A carbureter including a fuel chamber,

a vaporizing chamber having an air opening at one end, a wick in the fuel chamber projecting into "the vaporizing chamber and extending transversely across the vaporizing chamber, and a valve pivoted in the vaporizing chamber. and having its free end resting upon the floor of said chamber beyond the wick, said floor being formed with a depressed portion on either side of the wick.

5. A carbureter includin a fuel chamber, a vaporizing chamber, a wick located in the fuel chamber and projecting-up into the vaporizing chamber and extending entirely acrossthe chamber, a deflecting valve sup ported within the vaporizing chamber and controlling the admission of air thereto, said valve extending overthe up er end of, the

wick and having its lower e ge arallel to the upper end of the wick, an a spring holding said valve normally closed.

6. A carbureter including a vaporizin chamber, awickin projecting into said chamber and exten ing-entirely across the chamber, means forsu plying fuel to said wicking-,l-ar inclined va ve supported atone 'endwit-h'in' said chamher and controlling the passage of air therethrough, the free edge of the valve normally restmgupon the floor of: the chamber beyond the, projecting 3 end of the wi-cking, said free edge of the valve being parallel to the wicking, a spring holding said valve closed, and means for adjustably varying the tension of the spring.

7 A carbureter including a fuel chamber, a vaporizing chamber located above the fuel chamberysaid fuel chamber having a longitudinally extending slot opening into the vaporizing chamber, a wicking carried in said slot extending down into the fuel chamher and projecting slightly above the floor of the vaporizing chamber, said wicking having a width equal to the width of the vaporizing chamber, a valve pivotally mounted within the vaporizing chamber, said valveinclined fromthe mouth of said chamber down toward the wicking, the free edge of said valve being parallel to the end of the wicking and resting upon .the floor of the chamber adjacent tothe wicking, resilient means for holding the valve closed, and means for adjust-ably varying the tension of the resilient means.

varying the tension 8. A carburetor including a fuel chamber, avaporizing chamber located above the fuel chamber, said fuel chamber having a slot communicating with the vaporizing chamber, through the floor thereof and extending entirely across the vaporizing chamber, sa d vaporizing chamber being downwardly inclined from its entrance-end to said slot, and then upwardly inclined to the exit end thereof, a valve located. within said chamber, pivotally mounted at its upper end and normally resting with its free end in contact with the floor of the chamber, the free end of the valve being parallel to the upper end of the wicking, a spring for holding said valve normally closed, and an adjusting screw for of said spring.

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY W. ASHMUSEN. [L. s]

Witnesses:

' W. N. .WoonsoN,

FREDERIC B. YVRIGHT.

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