US1141796A - Carbureter. - Google Patents

Description

0. S. HERTZOG.

CARBURETER.

APPLICATION FILED JAN'.27, 1914.

2 SHEETS-SHEET I.

THE NORRIS PETERS CO. PHOTQ-LITHO WASHANGTON. D.

Patented June 1, 1915.

0. S. HERTZOG.

CARBURETER.

APPLICATION FILED H.427, 19x4.

Patented June 1, 1915.

2 sums sum 2.

awuewto'o attomeg THE NORRIS PETERS 60.. PHOTO-LITHO. WASHINGnuni. D. C.

OSCAR S. HERTZOG, 0F PHILADELPHIA, PENNSYLVANIA.

' GARBURETER.

. Specification of Letters Patent.

Patented June 1, 1915.

Application filed January 27, 1914. Serial No. 814,761.

To all whom it may concern:

Be it lmown that I, OSCAR S. Hnn'rzoe, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Carbureters, of which the following is a specification.

The object of this invention is to provide a device of the class described, which is simple of construction, and highly eflicient in its mode of operation, the said high efficiency being obtained as a result of a more complete mixing of the vaporized fuel wlth the air by virtue of a novel combination and arrangement of the mechanical elements comprising the device.

Another object is to provide a series of means for successively diminishing the size of the fuel particles and finally attaining complete vaporization before entering an engine cylinder. r

Further objects and advantages will be hereinafter brought out in the specification, wherein reference is made to the accompanying drawings, in which;

Figure 1 is a vertical sectional view of the preferred form of embodiment of the apparatus; Fig. 2, is an endelevation of the air inlet; Fig. 3 is a horizontal sectional view of the mixing chamber taken on the line 33 ofFig. 1 in the direction of the arrows, and Fig. 4 is a vertical transverse section on the line 44 of Fig. 1 in the direction of the arrows.

Referring to the drawings, the carbureting chamber 1 is substantially in the shape of an inverted cone provided with diametrically oppositely disposed and axially alined air inlet and fuel outlet ports 2 and 3, respectively, and with a third outlet 4 for draining the said chamber, said last-named outlet being adapted to receive a petcock 5 of any wellknown construction. The top of the chamber 1 is provided with an inwardly directed flange 8 surrounding a relatively large opening 9, said opening being closed by a casting 10, secured to said flange 8 by any suitable means, as for instance, the bolts 11.

The casting 10 primarily constitutes a plate 12 from which rises centrally thereof an integral extension 13, provided in turn with an axial bore 14, said extension terminating at its upper end in a substantially, horizontal section 15, provided with an axial bore 16 with which the bore 14 indirectly communicates through a chamber 17. The extent of the opening of the bore 16 into the chamber 17 is regulated by the needle valve 20, the inner conical end portion 21 of which cooperates with a shoulder 22 which forms a seat for said portion. The

needle valve is adjustably supported in operative position by a screw engagement with the plug 23, which is in turn firmly screwed in, or otherwise secured to, one end of the extension 15, and in the preferred form provides a packing gland 24, which operates to prevent a leakage of the fuel from the device along the side of the needle valve. Said valve is adjusted by turning the lever 25 in either clockwise or counter-clockwise direction and either directlyby hand or by providing a lever or cord (not shown) secured to the pin or similar means 26 carried by said lever 25. The opposite end of the channel 16 opens into a chamber 30, provided with a lower wall 31, which is in turn provided with a substantially semi-spherical aperture 32, normally closed by a ball or similar valvemember 33, said chamber 30 indirectly connecting with the floatchamber 35 being preferably integral with the extension 15.

The bottom of the float chamber is provided centrally with a substantially conical aperture 38, normally closed by a frustoconical valve 39, carried upon one end of the valve stem 40 which also carries a float 41 of cork or other similar material, said stem continuing upwardly through and in freely slidable engagement with a cap or plug 42, which latter acts as a closure for the upper open end of said chamber 35 and is held in position in any suitable manner, such for instance as that shown, namely by a screw engagement with the walls 37 The closure 42 is provided upon its upper surface with an integral extension 43 bifurcated at its upper end and carrying upon a pivot pin 44 an elbow lever 45, one end of which operates-to engage the upper projecting end of the valve stem 40, while the opposite end of said lever is provided with an eye 46 for securing thereto a cord, lever, or other means 47 for aiding in the starting of the engine by movement in the direction of the arrow and-causing a temporary flooding of the carbureter. The outer side of the bottom wall of the chamber 35 is provided with a collar 50 to which is secured one end of a pipe 51, leading from the fuel tank (not shown), and extending in axial alinement with the opening 38. Said bottom wall is also provided with an opening communicatin I with a suitable petcock 52, employed to rain the chamber when such is desirable.

The air inlet 2 to the chamber 1, is prefertrio with, but of considerably less, diameter than the ring 56. Said member 59 is provided with a diametrically extending integral member 60, centrally apertured and threaded to adjustably support astem 61, extending axially with respect to said member and provided upon its outer end with a knurled thumb nut 62 and upon its inner end with an enlargement 63, against which lies the helical spring 64, normally forcing the disk 65, also carried by the stem 61, against the inner open end'of the cylindrical member.

Theoutlet 3 from the chamber 1 has its inner end partially closed by a screen or strainer 70, held in place by any suitable means, such as soldering, while its outer open end is providedwith means for securing the device as a whole, either directly to the casingof an engine, or to an intermediate connecting member, neither of which is shown in the drawings. Furthermore, substantially midway of the extent of the outlet 3 abutterflyvalve 71 isprovided with relatively small apertures 72 andis rotatably carried upon a shaft 73, reduced at its opposite ends as at 75, said reduced portions being journaled at diametrically opposite points in the sides of said outlet and carrying upon one end a lever 76 .for revolving said valve by any suitable means.

Centrally disposed with the mixing chamber. 1 is an inverted, substantially conical screen or gauze 80 in approximately uniform spaced relation with the sides of said chamber and supported by a substantially conical shaped member 81, preferably of thin sheet metal and in turn supported in spaced relation with the plate 12 of the member 10 by any suitable means, such as the pins, 82 secured as by soldering to said conical member at one end and extending at their other end portions through said plate 12, and being provided with integral, annular projections 83 and thumb nuts 84 which together. operate to maintain said pins in a giving longitudin'alposition. The

conical member 81 has secured to its upper surface in any suitable manner a substantially diametrically extending member 85, said member being preferably situated a slight distance to one side ofthe center of the member 81, and extending from. said member up to and in binding or fluid-tight contact with the under surface of'the plate 12, and substantially tangential to onesideof the lower openend of the bore 14.

In the. operation of this device the'gaso lene or other fuel is fed from the supply tank through the pipe 51 and opening 38 into the chamber 35 until the float is raised to the position'shown in Fig. 1,'at which point said ope'ning38 is closed by a conical valve 39. The needle valve 20 is adjusted as hereinbefore described and as the engine,

to which'the device is applied, is started, T the fuel is drawn into the offset 36, recess 30 and bore 16, having forced aside the through the port 2', said amount being regu f lated by the extent to which the disk 65 is allowed to open-the passage through the cylinder 59,the normal openingin-the ring 56 being constant while the possible opening through said cylinder is adjustable. As 'i the air rushes through the chamber 1 it strikes and passes throughone section'of the gauze 80, carrying with it the charge of fuel previously deposited thereon. Continuing on its course, the air and fuel pass i through that section of the gauze forming the'other half of the member 80, which tends to break upthe particles of fuel, thus causing a. more complete mixtureof that substance with the air. 'To further aid in the mixing of the two elements and also to prevent foreign particles from passing into the engine cylinder the gauze strainer 70 is provided. Thus, in a thoroughly mixed state the combined air and fuel vapor pass through the outlet 3 and onward into the cylinder of the engine, the quantity of said mixture being regulated by the position of the butterfly valve 71, while the richness of the mixture is regulated as before describedv by the needle valve 20 and adjusting stem 61.

As a result of the employment of the invention in its preferred form it has been found that a considerable saving in fuel and increased efliciency of the engine per unit of fuel consumed is attained with a decrease in the formation of the well known carbon deposit in the engine, as well as a decrease in the amount of smoke and odors emitted from the engine exhaust. To aid in the complete carburetion of the fuel by creating a thin film and large surface of the same through which air is forced, I have found that the combination and arrangement of the particular elements in this invention most efficiently accomplish the desired result.

What I claim as new is 1. In combination, a carbureting chamber, an inverted conical screen member arranged within said chamber, a fuel inlet centrally disposed above said member, means for directing the fuel from said inlet to one side of the member so that the fuel will be distributed over one-half of the latter, an air inlet port arranged at the side of the chamber adjacent that half of the screen over which the fuel is distributed, and an outlet port diametrically disposed at the opposite side of the chamber.

2. In combination, a carbureting chamher, an inverted conical screen member arranged within the chamber, a top for said chamber having a fuel inlet, a conical member closing the screen and spaced from the top of said chamber, means interposed between said top and conical member for distributing the fuel over approximately onehalf of the latter, an air inlet port arranged at the side of the chamber adjacent that half of the screen over which the fuel is distributed, and an outlet port diametrically disposed at the opposite side of the chamber.

3. In combination, a carbureting chamber, an inverted conical member arranged within said chamber, a top for said chamber having a fuel inlet, a conical member closing said screen and spaced from said top, a flange rising from said conical member engaging said top, said flange being disposed to one side of said inlet to direct the fuel to one side of the screen so as to be distributed over approximately one-half thereof, an inlet port arranged at the side of the chamber adjacent that half of the screen over which the fuel is distributed, and an outlet port diametrically disposed at the opposite side of the chamber.

In testimony whereof I affix my signature 1n presence of two witnesses.

OSCAR s. HERTZOG.

Witnesses:

J onus BELL, JOHN A. BARRY.

Copies of this patent ma; be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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