US1376156A

US1376156A - Carbureter

Info

Publication number: US1376156A
Authority: US
Publication date: 1921-04-26
Anticipated expiration: 1938-04-26

Description

C. T. MURPHY.

CARBURETER.

APPLICATION FILED JAN. 31, 1917.

1,376,156. Patented Apr. 26, 1921.

1.9 FY a .8 l a o a 11 as a a 209 4 ll 11 a? E J Fig.1. 16 o 13 o rf 6' 2 5 v .19 33 L I 1 it 3 E A v v I 22 Inventor: 7 .21 Clif ord TMurphy,

as I Y e4 H AZZOWZ UNITED STATES I PATENT OFFICE.

CLIFFORD T. MURPHY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO COLUMBIA CARBURETOR COMPANY, A CORPORATION OF MAINE.

CARBURETER.

Specification of Letters Patent. Patented Apr. 26, 1921.

" Application filed January 31, 1917. Serial No. 145,798.

T0 all whom it may concern:

Be it known that I, Cmrronn T. MURPHY, a citizen of the United States, residing in the city of Los Angeles, county of Los Angeles, and State of California, have invented certain new and useful Improvements in Carbureters, of which thefollowing is a specification.

This invention relates to improvements in carbureters and refers more particularly to a device in which the fuel is vaporized and heated prior to entering the mixing chamber.

Among the salient objects of the invention are to provide a construction in which the fuel passing through a carbureter of the-multiple jet typeis pre-heatcd, or vaporized, by subjecting such fuel to the action of an electrically heated element; to provide a construction of the character referred to in which the fuel is so pro-heated without in any way affecting the normal operation of the multiple jet itself; to provide a construction in which the electrically heated or vaporized fuel is successively fed through a plurality of et openings and in which said openings are so controlled as to prevent any tendency to choking or flooding of the mixing chamber by excess gas; to provide a construction in which the last mentioned object is preferably accomplished by means of a manually controlled sleeve operable from the throttle valve; to provide a construction in which the electrical heating element as an entirety can be readily inserted in, or removed from, the main casing of the carbureter; to provide a construction in which the electrical heating element is effectively insulated from the main part of the car-.

bureter; to provide a construction in which the extent to which the fuel is heated or vaporized can be readily controlled; to provide a construction adapted for use with the cheaper and heavier fuels of higher boiling point, and in general to provide a simple and economical construction of the character referred to.

taken on lines 3-3 of Fig. 1 and looking in the direction of the arrows.

Fig. 4 is an enlarged view of the nozzle 'la1d out flat.

Referring. to the drawings:

1 designates the main casing which takes the form of a Venturi tube; 2 the float chamber which may be of any usual construction; 3 the main air inlet controlled by a butterfly valve a operable from the dash; 5 designates the manifold connection; 6 the mixing chamber; 7 the inlet from the float chamber; and 8 the nozzle.

The nozzle 8 is screw-threadedas shown at 9 into the main casing. This is closed at its upper end as shown at 10 and is provided near its upper part with a series of circumferential extending apertures 11. As seen more clearly in Fig. 4:, these apertures lie in successively elevated planes and form the only outlets from the nozzle. These apertures or ports 11 are controlled by a vertically reciprocating sleeve 12 which teleJ scopes over the upper end of the nozzle.

This sleeve is actuated by means of a forked lever 13 pivoted as shown at 14 to trunnions 15 carried by the sleeve. The upper end of this lever arm 13 is pivoted as shown at 16 to an arm 17 carried by the butterfly throttle 11. This tube is surrounded by a sleeve 20" formed as an extension of the nut 21 which is screw-threaded as shown at 22 to the casing. Between the end of this nut and the casing is interposed a washer 23. Inside of the tube 19 is a steel rod 31 which has an enlarged lower end 24 forming the binding post and carrying a binding nut 25. The binding post is provided with a nut 26 which is screw-threaded as shown at 27 to the main nut 21. This binding post is insulated from the nut 26 by means of an insulating sleeve 28 and insulated

washers

29 and 30.

By arranging the ports The upper end of the steel rod 31 projects through the sleeve 19 and is connected to a coil resistance wire 32. This coil extends around the tube 19 and rests at its lower end on the upper end of the sleeve 20. The

current is from the binding post through 500 F. which heats the oil to a temperature of 190 F. In one case the kerosene was a 44 Baum gravity at 62 F. and after heating it was raised to a gravity of 56 Baum at 190 F. hen this heated liquid mixes with the air it vaporizes much more readily and makes a better and more combustible mixture. It is to be understood that the oil can be heated or even vaporized as desired in order to get the most effective results. The degree of heat depends, of course, upon the gravity of theoil and also its character.

The invention is not limited to the details of construction shown except as set forth in the appended claims.

I claim as my invention:

1. In a carbureter, an elongated fuel feeding nozzle adapted to be inserted in a carbureting mixing chamber, said nozzle having a closed upper end and provided controlled dischargewith progressively means, an electrical heating unit disposed within the nozzle and terminating a substantial distance below the upper end thereof to provide a vaporized fuel receiving reservoir of a material capacity, said unit having heating coils to intensely heat the fuel passing therethrough to be vaporized prior to its delivery to the fuel reservoir, and movable means embracing the nozzle for progressively opening or closing the fuel feeding'means therein.

'2. In a carbureter, an elongated tubular feeding nozzle adapted to be inserted in. a carbureter mixing chamber, said nozzle having a closed upper end and provided with separated discharge orifices, an electrical heating unit disposed within the nozzle and spaced from the walls thereof and terminating a substantial distance below the upper end thereof to provide a vaporized fuel receiving reservoir in the nozzle of a material capacity, said unit having exposed heating coils extending therearound to intensely heat the fuel passing through the nozzle, means for supporting the heating unit outside of the interior of the heating nozzle, and a movable member embracing the upper end of the nozzle, adapted to progressively open .or close the fuel discharge orifices in the fuel receiving reservoir of the nozzle.

3. In a carbureter, an elongated tubular fuel feeding nozzle of substantially uniform diameter adapted to be inserted in the mixing chamber of a carburetor, said nozzle having a closed upper end and provided with separated vertically disposed discharge orifices, an electrical heating unit within the nozzle spaced from the walls thereof and terminating a substantial distance below the upper end of the nozzle to provide a vaporized fuel receiving reservoir of a relatively large capacity, said unit having exposed heating coils to intensely heat the fuel passing therethrough prior to its arrival to the vaporized fuel receiving reservoir, and a vertically movable member slidably embracing the upper end of the nozzle for progressively opening or closing the vertically disposed fuel discharge orifices in the fuel receiving reservoir of the nozzle.

4. In a carbureter, a fuel nozzle adapted to communicate with a mixing chamber, said nozzle having afuel discharge, an electrical heater for heating the fuel introduced to the nozzle, said nozzle being constructed to constitute a vaporized fuel reservoir of a material capacity adapted to receive and retain a supply of vaporized fuel, and controlling means for the fuel discharge to permit variable quantities of the stored vaporized fuel to be discharged from the fuel nozzle.

5. In a carbureter an elongated fuel feeding nozzle adapted to project into a mixing chamber and having progressively controlled discharge means, an electrical heating unit disposed within the nozzle, said nozzle being formed to provide a vaporized fuel receiving reservoir of a material capacity to store within the nozzle an appre-