US1516276A - Carburetor - Google Patents

Description

A. J. HAUSKINS CARBURETOR 21 Filed Sent. 17. 1923 f 3 Sheets-Shut l 4 1 37 7 G J5 f I his Wifarrzgy:

- 1,516,276 A.' J. HAUSKINE} CARBURETOR Filed Sent. 17. 19,23 3 shun-shut 5 Patented Now 18,1924.

- u ITED. STATES PATENT oFF cE.

ALVIS'J'. HAUSKINS, or CHICAGO, ILLINOIS. I

CARBURETOR.

Application filed September 17, 1923. Serial No. 663,045.

moreparticularly pointed out in the ap-" pended claims. One of the objects of my present invention is to produce a carburetor without a float valve, and in which the fuel ,will be drawn into the carbu'retorby suction.

Another object is to produce an adjustable device, in the type of carburetor referred to, which will perfectly cooperate with a needle valve to produce proper admixture of air and fuel andthus function with a maximum of efficiency.

Another and important object of the in 'vention is to produce a'device which will .draw fuel into the mixing chamber when the air valve is closed oropen to a very slight extent, thus enabling the operator to start the engine at a slow or idling speed. 3 Another object is to" produce'in a floatless carburetor- 'such an arrangement of the air valve which will not only take the place of the usual valve of the butterflytype but will directthe passage of air to a space immediately surrounding the fuel outletfrom the needle valve, thus permitting an. automatic and better flow of fuel from the fuel supply tank.

Another object is to produce a carburetor which ,is .simple in construction, .easy to assemble ,-relatively cheap to fabricate, has

no complicated parts to get-out of order,

which"aflordseasy access to those parts which may require adjustment and which may be adapted for attachment to substantially every type, of internal combustion In the drawings: I Fig. 1 is a side view of the carburetor as it appears when coupled to the manifold pipe of an internal combustion engine.

Fig. 2 is atop plan view of the same. Fig. 3 is a bottomplan view of the same. Fig. 4 is a longitudinal, vertical, sectional view, taken in the plane of the dotted line- H of Fig. 2, looking in the direction indicated by the arrow. Y e I F ig. 5 is a horizontal sectional view, taken in the plane of the dotted line 5.5 of Fig.

4, looking in the' directionindicated by the arrow.

Fig. 6 is a transverse, vertical sectional view, taken in the plane of the dotted line :6-6 of Fig. 2, looking in the direction'indicated by the arrow.

Fig. 7 is a top plan view of the device, the

adjusting lever and connected operating parts being shifted into a position dilferent from the positions shown in Fig. 2.

Fig. 8 is a longitudinal, vertical sectional view, taken in the plane of the'dotted line 88 of Fig. 7, looking in the direction indicated by the arrow. Y

Fig. 9 is a transverse, horizontal sectional view, taken in the plane of the dotted line 99 of Fig. 8, looking in the direction indicated by the arrow. j

A indicates, as a whole, the body of my carburetor, of generally tubular form and provided at one end with a flange a adapted i to be bolted by bolts 1 to a flange I2 ofthe manifold B'of an internal combustion engine. A packing or washer 2 is inserted between the flanges-a, b. The body A is provided with acentral, tubular. open end portion C which contains'an air-passageway 3. M

D is the gasoline feed-pipe which is screwed into a suitable longitudinal aperture in the housing A by screw threads 4- and;

projects into the inlet air passageway 3. At its outer or rear end the feed pipe D is interiorly screw threaded so as to afford convenient means ofattachment to any suitable source of asoline or other fuel supply. The feed pipe l) is provided at its inner end with a somewhatelongated tapered bore '5 con-' stituting a valve seat for the needle valve E.

The needle valve E enters the tapered bore 5 of the pipe D and is supported'upontheshort arm member of a longitudinally movmovement through the piston member by' the adjusting nut 11. The passageway 9 in the body A is enlarged, as indicated at 12,

' to form an annular shoulder 13. The body A is provided with an enlarged opening 14, of a size forming a bearing seat'for the member 10 and adapted to permit of the reciprocation of the movable piston member therein. Incidentally the size of the opening 14 also affords access for the convenient manipulation of the adjustingnut 11. l

The head or piston 10 carries, on its forward face, a stud 15 around which is wrapped a spiral spring 16. This spring 16 presses at one end against the forward face of the member 10 and at its other end adjacent the annular shoulder 13 which surrounds the rear end of the passageway 9'.

The. body A, above the openin or recess 14., is longitudinally slotted at 1?, the side walls of said slot forming guide-ways for an arm 18. This arm 18 "projects from the movable head or piston 10 through said slot, and it has a pivotal connection at 19 with a/bifurcated boss 20, which latter is bolted by a screw 21 to a rod 22. This rod '22, at its forward end, has a sliding bearing through a bearing lug 23 which projects laterally from and is integral with the bell crank lever F; This bell crank lever F is pivotally mounted at f to the side of the body or housing A, one of its members or arms 24, (the lower one when looking at Fig. 1) having a straight margin .25 adapted, in' one position of the lever F, to contact with the rear face 26 of the flange a or other stop. The other (rear) member or arm of the lever F is provided with an apertured bearingstud 27 in which one end of an operatin r0d 28 is adjustablysecured by means of t e set screw 29, or other [convenient means.

The open mouthed passageway 3 is controlled b a two-member valve G, as a whole, which iproperly open, will permit air to pass into a mixing chamber H. The air valve G consists of two cylindrical postlike members 30, 31, the central vertical axes of which are at right angles to the longitudinal axis of the fuel pipe D. The members 30 and 31 are each provided on its lower end with a ear or with gear teeth 32 which intermes as clearly shown in Fig. 3, so that when the member 30 is rotated on its longitudinal, vertical axis, the other member 31 will also rotate.

A bottom plate 33 is'fast'enedbyscrews 34 to the under side of the housing A and serves to hold the valve members 30, 31, in position. To this bottom plate are suitably riveted'at 35, 35, two interiorly and upwardly projecting pivotal studs 36, adapted to enter axial apertures 37, 37, in the valve members 30, 31, and about which said valve members may rotate. I

'The valve member 30 is provided at its upper endvwith an upwardly extending axle or stud member 38, the central, longitudinal axis of which coincides with the similar axis of the stud 36 on which said member 30 is mounted. The upwardly extending stud 38 passes upwardly through a suitableaperture' in the body A, and the boss 39 on the regulatingarm J, and engages the slot-40 in a cam disc 41. clearly shown in Figs. 2 and 6, is flattened or reduced in size 'at 42 so that it may have a slidingfit or bearing in said slot 40. The cam disc 41 is set in atop plate I and is held upon the boss39 by a set screw or bolt 43, which-passes through a slot 44 in said cam The end of the stud 38, as I disc 41, said slot 44 being parallel to the slot 40 as clearly shown in Figs. 2 and 6. The disc 41, as ,clearly shown in Fig. 2, is

mounted in the plate I, eccentrically to thevertical axis of the stud member 38.

The other valve member 31 is provided.

with an upwardly extending axial trunnion or stud 45 which extends to the under side of, but not through the plate I, passing through a suitable aperture in a boss 46 also on the arm J. The stud 45 is secured to 1 said boss 46 by the laterally extending bolt 47 and also by the verticall extending bolt tive or laterally rotative movement between the plate I and the boss 46.

' The two members of the valve G are suitably recessed or cut away asshown at 50 for the purpose of affording communication be tween the air passageway 3 and themixing chamber H, and are also cut away as shown at 51 to afford close contact with the exterior of the end of the fueltube D. When the two members 30 and '31 are turned so that they contact at the recesses 51 with said tube D, the passage of airwill be completely shut off, although, as shown in Fig. 5, fuel may enter said chamber if the needle valve E is moved away fromits seat 5, the end of the pipe D opening into said mixing chamber. The mixing chamber H consists of the inner end of the passageway 3 beyond the valve G and the passageway formed in a tubular cylindrical member 52, whi h latter is seatedin the body A and extends forwardly into the manifold B. One portion of the rear wall of the member 52 is slotted at 53 to provide for the longitudinal reciprocation of the rod 6 which connects the needle valve E with the piston member 10.

The parts are shown open 'for the free passage of air in Fig. 9, and are shown closed in Figs. 4 and 5.

Shifting of the position of thedisc or eccentric 41 is accomplished through the medium of an upwardly extending and for holding the wardly bent flange member K, mounted upon the plate I, the position of the flange K being such as to adapt it for coutactavith the forward end of the rod 22.

.Assume that the parts are in the position shown in Figs. 1, 2, l and 5 it will be noticed that the needle valve E is completely seated so that nogasoline or other fuel may enter through the supply pipe also that the spring 16 is extended its full length, piston 10 to the proper position to the rear, and holding said nedle'valve seated because of the retracted position of the rod 6. It-willalso be noted that the airvalve G is closed, the members 30, 31,

= being in contact against the outside of the Assuming the parts have been adjusted V, properly, tlie first movement of the operator" will be to move the rod 28 which in turn will actuate the bell crank lever F, raise the end of the arm 22-. The-engine is then cranked either manually or by suitable starting mechanism. The turn over of the engine willproduce a suction in the manifold and through the chamber H, and

tension of the spring 16 and thus to draw the piston 10, together with the arm 6 and needle valve E forward toward the maniturn operate to rotate the air valves30, 31,-

and permit the proper amount of air to enter from the passageway 3, through said valve members and into the mixing chamber H to properly mix with the fuel.

It will be noted that the air passage 3 isrelatively large as are the openings 50 in the valve members 30, 81, and that the end of the fuel pipe D is centrally located in these openings. Hence when the needle passageway 9, sufficient to overcome the valve is opened, the fuel is injected by suction into a 'volume of air and properly mixes therewith, the air and the fuel thus being automatically drawn into and through the carburetor by suction entirely without the necessity of any feed or auxiliary device to force the fuel into the carburetor or to.

supply it to the carburetor by ravity flow or otherwise. As the valve (3 is opened further to enlarge this air space surrounding the needle valve, the increased speed of the engine naturally maintains the vacuum and the proper suction pull.

To those familiar with the operation of internal combustion engines and with carburetors, it'will be understood of course that the handle J is turned in ,such direction as will be necessary to admit of the desired amount of air, and that the supply of air may thus be regulated. It will also be understood that the needle valve will be automatically moved forward to open or backto con'strict the passageway and shut o'ff the supply of gas, accordingly as the relative position of the arm 22 bears to the inclined plate K, and that when the supply of gas is shut oil", the spring 16 will automatically move the bar 6 to the rear and the needlefvalve E will thus beclosed tightly in its seat.

It will be noted that this carburetor when used on! an engine for driving vehicles, entirely eliminates the cost and the necessity for the use of any vacuum or other device required for lifting the fuel from the supply tank to a point above the carburetor, since the pipe D is connected directly to the supply tank.

It will be understood that in some uses of the present invention, the spring 15 may be arranged so as to tend to hold the piston 10 in the position shown in Fig. 5, thereby maintaining the needle valve E normally away from its seat and the closingof the valve on the seat be regulated through the arm J.

This and other changes are thought to be so obvious that more specific illustration or description is not necessary.

A particularly important feature of the invention lies in the construction whereby the end of the fuel supply pipe D opens at a point beyond the throttle valve when the latter is closed,this being more clearly shown in Fig. 5.

I claim as my invention:

1. A carburetor of the class described comprising a casing formed with an air intake passage and a fuel nozzle extending axially into said air passage, valve members adapted to close said air passage adjacent said fuel nozzle, a passageway extending through said casing parallel to said fuel nozzle, and communicating with said air intake passage, a spring actuated piston mounted in said passageway, a needle valve associated withsaid fuel nozzle, and means extending through said passageway into-said air intake passage and operably connecting said piston and needle valve.

2. In a carburetor of the class described comprising a casing formed with an air intake passage, a fuel nozzle extending into said passage, valve members rotatably mounted in said casing and adapted to close said passage adjacent said fuel nozzle, a needle valve associated with said fuel nozzle, a piston in said casing and mounted for reciprocatory movement by the suction in said air passage and connected to said needle valve, and means operatlvely connectlng said piston and said valve members for positively adjusting said needle valve independent of the vacuumin said air passage.

3. In a carburetor of the class described comprising a casing formed with an air intake passage, a fuel nozzle extending into said air passage, valve members rotatably piston.

mounted in said casing and adapted to close said passage adjacent said" fuel nozzle, a needle valve associated with said fuel mozzle, a piston mounted in said casin and connected to said needle valve, said plston being operable by the suction in said air passage to adjust said needle valve relative to said fuel nozzle, cam elements mounted on said valve-members, an inclined abutment carried by'said cam elements, and means secured to said piston, and operatively engaging said inclined abutment, whereby said piston and needle valve may be adjusted independently of the action of suction on said In testimony that I claim the foregoing as my invention I affix my signature, in the presence of two witnesses, this 13th day of September, 1923.

ALVIS J. HAUSKINS. lVitnesses v TAYLOR E. BROWN, B. L. llfLAoGREeoR.

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