US1882966A - Carburetor throttle - Google Patents

Description

Oct. 18, 1932.

F. W. SCHAFFNER CARBURETOR THROTTLE Filed March 2, 1952 mun 1i llllllll deflecting means.

Patented Oct. 18, 1932 PATENT OFFICE FREDERICK W. SCHAEENEB, OF BROOK LYN, NEW YORK CARBUR-EIOR THROTTLE Application filed March 2,

This invention relates to carburetors of the character set forth in my co-pending application filed September 3, 1931, Serial Nor 561,068, and more particularly to means for controlling the fuel from the carburetor to the engine and has for the rimary object, the provision of a device of t e above stated character which will provide an efficient and practical control over the fuel at all speeds of the engine and which is so constructed that the fuel passing through the same Wlll be deflected into several paths. extending angularly to each other and thereby cause a more thorough mixing and breaking up of the fuel providing a combustible mixture capable of providing greater power and less carbonization of the engine.

Another object of this invention is the provision of deflecting elements cooperating with the control means, whereby the fuel passing through and from the carburetor will be given a swirling action and travel in substantially spiral paths.

With these and other objects in view, th s invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed. 1

For a complete understanding of my 1nvention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a side elevation partly in section illustrating a combined fuel control and Figure 2 is a fragmentary sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a perspective view illustrating a fuel deflecting element operating in conjunction with the control means forcausing 'the fuel to travel in spiral paths when leav-- ing the carburetor.

Figure 4 is a rspective view illustrating the sections of th e control means.

Referring in detail to the drawing, the numeral 1 indicates a carburetor having a mixing chamber 2 supplied with fuel from a chamber 3 and air from main and auxiliary air intakes 4 and 5, respectively. The upper end of the mixing chamber 2 is flanged and 1932. Serial No. 596,354.

apertured to receive fasteners for attaching the carburetor to the intake manifold of an engine. The air and fuel passing upwardly through the mixing chamber 2 under the suction of the engine is controlled by a valve 6 consisting of a pair of rotatablymounted shafts 7 each carrying a. semi-circular shaped plate. The shafts 7 are connected by gears 9 and one of said shafts is provided with an operating medium 10 for imparting rotation to said shafts. Due to the gears 9, the shafts when actuated rotate in opposite directions causing the plates 8'to either open or close the mixing chamber to the engine. The plates 8 when in passage closing position are adapted to abut and the abutting edge of one plate is concaved while the companion edge of the other plate is convexed causing said plates to interfit when in passage closingposition. The abutting edges of the )lates are notched as shown at 11 and when 1n passage closing position, the notches align permitting a slight amount of fuel to pass to the engine for the pur ose of maintaining the engine running at i ling speed. As the plates 8 are moved by the operation of the shafts they move apart assuming oppositely inclined positions as shown in Figure 1, and the passing of the fuel by the plates causes said fuel to be deflected at several angles thereby causing a more thorough mixing ofthe fuel prior to entering the engine. The fuel passing upwardly between the plates as shown in Figure 1 strikes the under faces of said plates and is deflected in paths extending angularly t0 each other with the fuel of one path crossing the fuel of the other path. The fuel also extends upwardly by the plates about the outer edges and mingles with the deflected fuel pasmg up between the plates. Arcuately curved ribs 90 12 are formed on the under faces of the plates 8 and the fuel passing upwardly between the plates is given a swirling action besides being deflected laterally by the plates themsftlallves thereby more thoroughly mixing the A tubular sleeve 13 is seated in the upper portion of the mixing chamber 2 above the control valve 6 and has formed upon its inner face a plurality of arcuately curved ribs 14 sothat the fuel contacting with said ribs will be given a swirlin action thereby causing the fuel when leaving the carburetor to the intake manifold of the engine to travel in substantially spiral paths.

The valve lates when opened or positioned as shown in i re 1 permit the passage of fuel through t e throat of the carburetor.

The fuel passing between the plates in Figure 1 is deflected in a lar streams and each stream given a swirlmg action by the ribs 12. These streams pass upwardly and laterally toward the walls of the throat. The fuel also passes the plate between themselves and the walls of the throat and the last named fuel is given a swirling action by the ribs 14 on the tubular sleeve 13, consequently the various streams of fuel will thoroughly mix before enterin the engine to which the carburetor is attac ed. 7

The foregoing description relates to a construction which more efliciently mixes or breaks up the fuel leaving the carburetor and prior to entering the engine and thereby obviating any possibility of the fuel entering the engine in a raw state or containin lobules of any appreciable size. The fue oing interru ted or deflected into several paths besides eing given a swirling motion will enter the engine in a highly vaporized condition capablecof producing maximum power with a minimum consumption of fuel and carbonization of the'en e.

While I have shown and escribed the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of my invention, as claimed.

Having thus descri ed my invention, what I claim is:

1. A carburetor throttle comprising semicircular valve plates mounted for pivotal movement in opposite directions within the throat of a'carburetor for controlling the passage of fuel through the throat, one of said, plates having its straight edge concave and the other'plate having its straight edge convex, said concave and convex edges adapted to fit one within the other durin the positioning of the plates to close the t roat and each of said edges having notches to align for forming ports of a given size to permit passage of a regulated amount of .fuel by said plates when in throat closing position proper or running an engine at idling speed, fuel deflecting means on said plates to swirl the fuel passing between said plates when the latter are positioned to open the throat, and means located above the plates within the throat to swirl the fuel passing between the plates and the walls of the throat.

2-. A carburetor throttle comprising semicircular shaped valve plates mounted for pivotal movement in opposite directions within the throat of a carburetor, means permitting some flow of fuel when the plates are in throat closing position, said plates adapted when moved away from each other to permit fuel to pass therebetween and be deflected in streams angularly to each other and to pass between the walls of the throat and the plates, spaced curved ribs on the inner faces of the plates and the curvature of the ribs of one plate being'arranged opposite to the curvature of the ribs of the other late whereby the fuel deflected by the inner aces of the plates will be given swirling movements in op osite directions to each other, and curved ri s on the walls of the throat above the plates to give the fuel passin between the walls of the throat and the p ates a swirling movement.

In testimon whereof I aflix my signature.

FRED RICK W. SCHAFFNER.

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