US1262298A - Mixing-valve for carbureters. - Google Patents

Description

J. H. BATCHELORs MIXING VALVE FOR CARBURETERS.

APPLICATION FILED 001.115.1916.

1,262,298 Patented Apr. 9, 1918.

2 SHEETS-SHEET l.

44 avr-57% 3mm/1to1, 18

JEP/11E F4 FHTCHELOK J. H. BATCHELOR.

MIXING VALVE FOR CARBURETERS.

APPLICATION HLED 001.16. 1916.

1,262,298., i Patented Apr.9,1918.

2 SHEETS--SHEET 2.

UNITED STATES PATENT OFFICE.

JAMIE H. BATCHELOR, 0F SAVANNAH, GEORGIA, ASSIGNOR T0 CARL ESPY, 0F SAVANNAH, GEORGIA.

l MIXING-VALVE FOR CARBURETERS,

Specification of Letters Patent.

Patented Apr. 9, 1918.

Application illed October. 16, 1916. Serial No. 125,932.

This invention relates to an improvedy mixing valve for carbureters and has for its primary object to provide a valve automatically operated by suction from the engine cylinders to admit a fuel to the mixing chamber, in combination with means f or vaporizing the liquid fuel prior to its admission to the mixing chamber.

It is a more particular object of the 1nvention to provide a suction-operated valve element controlling the supplyof air to the mixing chamber, a heat receiving chamber extending into the mixing chamber, a fuel supply tube -extending through the heatlng chamber and having a valve seat at one end, a needlevalve operatively connected to the suction-operated valve and moved therewith to its open position', and means for supplying a heating medium to said `heat receiving chamber, whereby the fuel., in its passage through said tube, is vaporized.

. It is another important object of the 11ivention to provide means whereby the f uel valve tube ma be heated to a vei'y high temperature a ter the engine is started -in operation, said incansincluding air supply tubes extending through the engine cylinder heads or the exhaust so that the air will be heated from thc explosion ofthe mixture in the engine cylinders in the continued operation of the engine.

It is a further general object of the invention to provide a device for the above purpose which is simple in construction, positive in its action, and capable of vaporizing unreined hydrocarbon fuels', such as kerosene and the like, for use in the propulsion of motor vehicles.

With the above and other obllects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which,

. Figure l is a vertical section through' a carbureter provided with my improved mixing valve and vaporizing means;

Fig. 2 is a similar view showing the air inlet and fuel control valvesiin their open positions;

Fig. 3 is a horizontal section taken on the line 3 3 of Fig. l; i

Fig. 4: is asimilar view taken on' the line 4.-/1 of Fig. l;

Fig. 5 is a diagrammatic plan-view showing the arrangementv of the air pipesor tubes in the engine cylinder heads; and v Fig. 6 is a detail perspective View of theneedle valve.

`Referring in detail to the drawings;-y 5 and 6 respectively indicate the upper and lower sections of the carbureter casing, said casing sections each being provided with outwardly projecting flanges 7, between which the vflange 9, formed on the valveseat member 8, is disposed. These flanges 7 and 9 are provided with openings to receive the' fastening bolts 10. The upper section 5 of the carbureter casing constitutes the-.mixing chamber indicatedat 11, and said casing section is formed with a nipple 12 connected to the intake ports ofthe engine cylinders by a pipe or conduit in the usualV manner..v A butteriy valve, indicated at 13, is suitably mounted in the outlet of the mixing chamber 1l, whereby the supply of the combustible mixture to the engine cylinders can be controlled and regulated. The lower section 6 of the carbureter casing is also provided with a laterally projecting nipple 14 for the connection of a pipe or conduit thereto, through which air is admitted beneath the valve seat member 8. Any pre-v ferred means may. be employed for heating the air to any desired temperature.

The valve seat member 8 extends downwardly into the casing section 6 and has its walls inwardly inclined to provide a beveled or inclined seating face 15 for the annular, outwardly inclined flange 17 formed upon the valve disk 16. This valve disk is centrally provided with a `cylindrical stein 18 longitudinally" movable through a guide boss 19 formed-upon the base wall of the casing section 6..: A nut 20 is threaded upon the lower end .ffsaidy stem, and between .the nut and the bossrl9 a coil spring 21 is arranged, said.v spring normallyv..urg'ing the valve downwardly and holding the same in closed position upon its seat. The valve disk 16 isprovided at diametrically opposite points with apertures 22, the purpose of which will be presently explained.

An opening is formed through the top wall of the casing section 5, the lower portion of said o ening being reduced in diameter to provi e a shoulder 23 upon which is seated an annular flange 24 formed upon the upper end of a cylindricalshell or casing 25 which extends downwardly into the mixing chamber 11. The upper end portion of the opening in the casing wall is threaded to receive the threaded lower end of a chamber 26, the upper end of which is closed by a suitable cap 27. To a laterally projecting nipple,.28 extending from the` casing, a tube or conduit, connected to the fuel tank or reservoir, is attached. The chamber 26 has an elongated, cylindrical tube 29 integrally formed with its base wall, the bore 'f said tube communicating with the interior of the chamber 26 and being flared to provide the valve seat 30. The tube 29 extends entirely through the casing 25 in spaced relation to the walls of the latter, and has its lower end slightly spaced from the edge of the o ening 31 formed in the bottom wall of t e casing 25. A needle valve rod 32 is' disposed through the bore of the tube 29, said bore lbeing contracted or reduced in diameter, as at 33, for a short .distance below the valve Seat 30, so that the rod 32 willsnugly engage therewith. This rod2 upon its upper end, is formed with a conical valve head 34 for engagement on the seat 30 and in spaced relation to the head 34 the rod 32 is longitudinally cut away or recessed uponv one side, as at 35. The lower end of the rod 32 has a threaded connection, as at 36, to the valve disk 16 so that when this valve disk is in its closed position, the valve head 34 on the rod is also tightly engaged upon its seat 30 to cut oli' the supply of fuel to the mixing chamber. A dash plate 37. is vertically movable in the chamber 26 and connected by a short stem 38 to the valve head 34. This dash plate acts in the usual manner to prevent vibration of the valve and insure a steady, even movement of the same.

The upper end of the casing 25, immediately below the flange 24, has an opening in one side thereof with which the inner end of a horizontal passage 39, formed in the wall of the casing section 5, communicates. A vertically disposed pipe or conduit 40 is provided adjacent its upper end with a laterally projecting, threaded nipple 41 for connection to the casing 5, the bore of the nipple being in alinement with the passage 39. The lower end of this pipe 40 has a laterally contracted inlet 42 with which an opening 43 formed in the side wall of the casing section. 6, at the base thereof, oomasesinas municates. A spark plug 44 is threaded in the upper end of the pipe 40 and has an electrode 45 extending longitudinally through said pipe to a point adjacent its lower end. This electrode is provided with spaced. shallow, conical disks 46, between which asbestos or Aother absorbent material indicated at 47 is disposed to constitute a wick. Upon the base wall of the casing section 6, at one side of the valve stem 18, an internal, upstanding, transverse rib 48 is formed. 'llhis rib prevents the flow of liquid fuel dripping through the apertures 22 of the valve 16 into the air inlet nipple 14. 4

To the lower end of the pipe or conduitA 40 and substantially in line with the electrode 45, tire en d of a pipe or tube 49 is connected. ln Fig. 5 of the drawings, I have shown the engine cylinders C, the heads thereof being removed. lln applying the present invention to motor vehicle engines having the detachable cylinder heads, a pipe 50 is disposed transversely through a metal plate or gasket which is interposed between the detachable heads and the upper ends of the cylinder casting, one of such pipes extending transversely throughl the compression chamber of each cylinder. T he. ends of these pipes 50 are suitably coupled to lon itudinal pipes 51 and 52 respectively, exten ing longitudinally upon opposite sides of the engine cylinder. To the pipe 51, the pipe 49 is coupled. A pipe or tube 53 is connected to the other of the pipes 52 and to the cylinder of a suitable hand pump indicated at 54, which may be mounted in any convenient position upon the dashboard of the vehicle body At the start of the operation of the engine, upon the creation of av vacuum in the engine cylinders, the valve disk 16 is drawn upwardly to its open position, which also lifts the head 34 of the needle valve rod from its seat and permits the liquid fuel to flow downwardly through the tube 29, the recessed side 35 of said rod being positioned in the reduced upper end portion 33 of the tube bore. The fuel flows downwardly around the rod and enters the mixing chainber where it is mixed with the incominor heated air drawn through the nipple 14. portion of the oil will collect in the cup shaped Valve 16 and drip through thel apertures 22 therein and collect upon the bottom wall of the casing section 6. This oil flowing through the opening 43 into the lower end of the pipe 40 is directed upwardly by the air jet from the pipe 49, created in the operation of the hand pump 54. The circuit for the spark plug 44 being closed, a spark wlll jump from the lower end of this electrode to the adjacent wall of the pipe 40, und this oil which is thus driven against the lower end of the electrode and the absorbent material 47, is ignited and the flame and fuel in its passage downwardly through thisA tube, will be completely vaporized. After the engine has been started in operation, the circuit for the spark plug is opened and the air will then be heated in its passage through the several pipes 50 traversing the compression chambers of the engine cylinders, and drawn into the casin 25. surrounding the valve tube 29. It wil therefore, be understood that the spark plug is used to ignite the fuel absorbed by the material 47, only in the initial or starting operation.

From the foregoing description, taken in connection with the accompanying drawing, the construction, manner of operation and several advantages of the invention will be clearly and fully understood. By means of my improved mixing valve and vaporizing device, the necessity of employing a float valve, as is usual in carbureters, is entirely cbviated. The valve mounting and arran ement is exceedingly simple, and positive y operated by the creation of a vacuum in the engine cylinders on each intake stroke of the piston. As the air and fuel control valves operate in unison and the fuel is completely vaporized before it enters the mixing chamber, it will be appreciated that the invention may be employed for use in the utilization of kerosene and other relatively heavy, unrefined hydrocarbon oils. The device has been found highly satisfactory in practical use, reducing the expense incident to the consumption of fuel to a material extent. I have above described the preferred form and construction of Vthe several parts of the apparatus, but it will, of course, be manifest that the mounting and arrangement of the fuel and air valves, as well as the heating means, may be varied in many respects. several elements referred to is also suscepiible of considerable modification and I, therefore, reserve the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent is 1. In a carbureter, a casing having a mixing chamber and a fuel supply tube extending into said chamber, air and fuel control valves, in combination with ymeans for heating the fuel supply tube to vaporize the liq- The form and construction of the uid fuel, said means includi a fuel absorbent material, means for supp ying air thereto and means for igniting said material.

2. Ina carbureter, a casing having a mixing chamber and a fuel supply tube extending into said chamber, air and fuel control valves, a casing surrounding the fuel supply tube, in combination with a conduit in communication with one end of said casing, said conduit having an air inlet, an absorbent material in said conduit, means for saturating said material with the liquid fuel,-and means for igniting the saturated material.

3. In a carbureter, a casing having a mixing chamber and a fuel supply tube extending 'into said chamber, air and fuel control valves, a casing surrounding the fuel supp tube, in combination with a' conduit in communication with oneend of said casing, and means for supplying a combustion supporting medium to said conduit for admission to the casing, whereby the liquid fuel is vaporized in its passage through the tube.

4. In a carbureter, a casing having a mixing chamber and a fuel supply tube extending into said chamber, lair and fuel control valves, a casing surrounding the fuel supply tube, in combination with a conduit in communication with one end of said casing, a spark plug mounted in one end of thel conduit and having a longitudinally extending electrode, an absorbent material on said electrode, and means for saturating the absorbent material with a liquid fuel, whereby the same is ignited when the spark plug circuit is closed and a combustion supporting medium supplied to said casingrto vaporize the liquid fuel in its passage t ou h the tube.

y 5. The combinationwith a car ureter havfng a mixing chamber and a liquid fuel'supply tube extending into said chamber, of a conduit opening at one of its ends in proximity to the fuel supply tube, air supply pipes heated by the exploded gases in thev engine cylinders and connected to one end of the conduit to supply the heated air thereto, an absorbent material arranged in said conduit, a force pump connected to the air pipes to deliver an air jet upon a com-` bustible fluid and direct the same upon the absorbent material, and means for igniting the absorbent material.

In testimony whereof I hereunto affix my signature in the presence of two Witnesses.

JAMIE H. BATCHELOR.

Witnesses:

M. C. LYDDANE, M. R. WILSON.

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