US2702562A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US2702562A
US2702562A US4418348A US2702562A US 2702562 A US2702562 A US 2702562A US 4418348 A US4418348 A US 4418348A US 2702562 A US2702562 A US 2702562A
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Prior art keywords
valve
lever
float
fuel
ears
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Elmer M Bimberg
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Bendix Aviation Corp
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Bendix Aviation Corp
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Priority to US4418348 priority Critical patent/US2702562A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel whereby air and fuel are sucked into the mixture conduit
    • F02M2700/4328—Reservoirs
    • F02M2700/4333—Reservoirs with limitation of the liquid level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7439—Float arm operated valve

Definitions

  • the present invention relates to carburetors and more particularly to a fuel inlet valve control mechanism for carburetors.
  • One of the principal objects of the present invention is to provide a simple and positive connection between the float lever and fuel inlet valve of a carburetor in which there is no appreciable backlash or lost motion and which permits the float and valve to be readily assembled in the carburetor and thereafter easily serviced.
  • Another object of the invention is to provide a readily responsive fuel inlet valve control mechanism for a carburetor adapted to minimize the effect of engine vibratiaoln and road jarring on the operation of the fuel inlet v ve.
  • Figure 1 is a side elevation of a carburetor embodying my invention in which the fuel bowl and valve are shown in cross-section;
  • Figure 2 is a view of the float and fuel valve of Figure 1 removed from the carburetor;
  • Figure 3 is a top plan view of a modified form of my invention showing the connection between the float lever and fuel valve in section;
  • Figure 4 is a view of the float lever, fuel valve connection taken on line 4--4 of Figure 3;
  • Figure 5 is a fragmentary side elevation of the float and fuel valve shown in Figure 3.
  • numeral designates an air horn of a single barrel downdraftcarburetor
  • numeral 12 a fuel bowl mounted on and formed integrally with the main body of the carburetor
  • 14 a throttle valve mounted on a shaft 16 in throttle body 18, a flange 20 being provided at the base of the throttle body for securing the throttle body to an intake manifold (not shown).
  • the fuel is delivered to the fuel bowl from a suitable source, such as a tank or fuel pump, through a conduit 26 to a fuel inlet valve 28.
  • the valve is controlled by a float 30 supported by a lever 32 pivoted on a pin 34 at a point between the float and fuel inlet valve.
  • ears 40 and 42 formed integrally with the float lever on the end opposite the float are turned downwardly and inwardly to form an open ring-shaped member, as clearly shown in the end view of Figure 2.
  • the head 44 on valve 28 is placed in the ring, and the neck connecting the head and the body portion 46 of the valve is interposed between the two free ends of ears 40 and 42.
  • a shoulder or rib may be formed on the surface of the valve near the end thereof.
  • the word shoulder will include an annular rib, one side of an annular groove or the underside of a head such as head 44.
  • the ends of the ears may be pressed inwardly against the underside thereof to eliminate substantially all play from the connection so that there will be no backlash or lost motion between the float lever and fuel valve during operation of the float mechanism.
  • the float is adapted to positively lift the fuel valve from its seat without having to depend on the fuel supply pressure to unseat the valve.
  • ears 40 and 42 are stamped or otherwise severed from the float lever on three sides, leaving the ears integrally connected to the lever on the fourth side near the outside edge of the lever.
  • a bar 48 is left between the two ears.
  • the cars are bent downwardly to provide a triangularly-shaped support into which the head of the fuel valve is inserted.
  • the ends of cars 40 and 42 fit snugly under the head 44 of the valve, holding the fuel valve in close relationship to the float lever so that no appreciable play exists in the connection.
  • the principal advantage of this arrangement over the first embodiment is that this arrangement may be fabricated with fewer operations.
  • Figure 5 illustrates the modified form of a float lever, fuel valve connection
  • this figure also shows a horizontal fuel inlet valve and a modified form of float lever.
  • This valve and float lever arrangement may be used equally as well in the embodiment of Figures 1 and 2. Further arrangements and modifications may be made in the present float mechanism without departing from the scope of the invention.
  • a fuel control mechanism for a float type carburetor comprising a fuel inlet valve having an annular shoulder, a float, a lever joined to said float having a longitudinal center portion for engaging one end of said valve and having ears extending from each side thereof forming an open ring-shaped member, the ends of said ears being disposed adjacent said shoulder on opposite sides of said valve and adapted to hold said valve end in contact with said center portion.
  • a fuel control mechanism for a float type carburetor comprising a fuel inlet valve having an annular groove near the end opposite the valve seat, a float, a pivoted lever joined to said float having a longitudinal center portion for engaging one end of said valve and having ears of resilient material extending outwardly from each side of said lever, each of said ears being bent in a smooth curve extending below the plane of said lever to extend toward each other in alignment with each other, the free ends of said ears being disposed in said groove on opposite sides of said valve and adapted to hold said valve end in contact with said center portion.
  • a fuel inlet control mechanism for a float type carburetor comprising a fuel inlet valve having an annular shoulder near one end thereof, a lever having a longitudinal center portion for engaging one end of said valve, a float secured to one end of said lever, and a pair of ears joined to opposite outside edges of said lever near the other end thereof, the free ends of said ears being adapted to embrace said shoulder on opposite sides of said valve and' adapted to hold said valve end in contact with said center portion.
  • a fuel inlet control mechanism for a carburetor comprising a fuel inlet valve having an annular groove near one end thereof, a float, a lever joined to said float and having a longitudinal center portion for engaging one.
  • ears extending outwardly from each side of said lever and bent in a smooth curve extending below the plane of said lever to extend toward each other, the ends of said ears being adapted to extend into said groove on opposite sides of said valve and adapted to hold said valve end in contact with said center portion, and a pivot for said lever between said float and said ears.
  • a control mechanism for a fuel valve having an annular shoulder thereon comprising a lever having a longitudinal center portion for engaging one end of said valve, a float secured to said lever, and a pair of resilient ears joined to said lever on opposite outside edges thereof and spaced from said float, said ears extending from said lever toward one another and being adapted to engage said shoulder on opposite sides of said valve to hold said valve end in contact with said center portion.
  • a control means for a fuel inlet valve having an annular shoulder thereon comprising a flat sheet metal lever, a valve engaging means on said lever including a center member for engaging the end of said valve, a slot on each side of said member, and deformable clamping elements adjacent said slots adapted to engage said annular shoulder and to be pressed firmly against said shoulder whereby a snug fit is obtained between said valve and said lever.
  • a control means for a fuel inlet valve having an annular shoulder thereon comprising a lever of flat sheet metal material, a longitudinal center member adjacent one end of the lever for engaging the end of said valve, a slot on each side of said member, and a clamping element joined to said lever along each side thereof adjacent said slots and extending inwardly for engaging said annular shoulder.
  • a control means for a fuel inlet valve having an annular shoulder thereon comprising a flat sheet metal lever, a longitudinal member in the center of said lever for engaging the end of said valve, a slot on each side of said member, a longitudinal member along each side of said lever adjacent said slots, and a valve engaging element extending inwardly at an angle to said lever from the inside edge of each of said side members.
  • a control means for a fuel inlet valve having an annular shoulder thereon comprising a pivoted lever of sheet metal material, a longitudinal member in the center of said lever for engaging the end of said valve, a slot on each side of said member, a longitudinal member adjacent said slots along each side of said lever, and an element resiliently secured to and extending inwardly at an angle to said lever from the inside edge of each of said members for engaging the shoulder on said valve.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Description

Feb. 22, 1955 E. B|MBERG I 2,702,562
CARBURETOR Filed Aug. 15, 1948 IN VEN TOR.
E MEB M. B! 5:26
A TTOENEY United States Patent CARBURETOR Elmer M. Bimberg, Detroit, Mich., assignor to Bendix Aviation Corporation, South Bend, Ind., a corporation of Delaware Application August 13, 1948, Serial No. 44,183
9 Claims. (Cl. 137-434) The present invention relates to carburetors and more particularly to a fuel inlet valve control mechanism for carburetors. I
One of the principal objects of the present invention is to provide a simple and positive connection between the float lever and fuel inlet valve of a carburetor in which there is no appreciable backlash or lost motion and which permits the float and valve to be readily assembled in the carburetor and thereafter easily serviced.
Another object of the invention is to provide a readily responsive fuel inlet valve control mechanism for a carburetor adapted to minimize the effect of engine vibratiaoln and road jarring on the operation of the fuel inlet v ve.
Further objects and advantages of the present invention will become apparent from the following description and accompanying drawings, wherein:
Figure 1 is a side elevation of a carburetor embodying my invention in which the fuel bowl and valve are shown in cross-section;
Figure 2 is a view of the float and fuel valve of Figure 1 removed from the carburetor;
Figure 3 is a top plan view of a modified form of my invention showing the connection between the float lever and fuel valve in section;
Figure 4 is a view of the float lever, fuel valve connection taken on line 4--4 of Figure 3; and
Figure 5 is a fragmentary side elevation of the float and fuel valve shown in Figure 3.
Referring more specifically to the drawings, numeral designates an air horn of a single barrel downdraftcarburetor, numeral 12 a fuel bowl mounted on and formed integrally with the main body of the carburetor, and 14 a throttle valve mounted on a shaft 16 in throttle body 18, a flange 20 being provided at the base of the throttle body for securing the throttle body to an intake manifold (not shown). The fuel is delivered to the fuel bowl from a suitable source, such as a tank or fuel pump, through a conduit 26 to a fuel inlet valve 28. The valve is controlled by a float 30 supported by a lever 32 pivoted on a pin 34 at a point between the float and fuel inlet valve. In the embodiment of the invention shown in Figures 1 and 2, ears 40 and 42 formed integrally with the float lever on the end opposite the float are turned downwardly and inwardly to form an open ring-shaped member, as clearly shown in the end view of Figure 2. When the fuel valve and float are assembled, the head 44 on valve 28 is placed in the ring, and the neck connecting the head and the body portion 46 of the valve is interposed between the two free ends of ears 40 and 42. In place of the annular groove forming the neck of the valve, a shoulder or rib may be formed on the surface of the valve near the end thereof. When used hereinafter, the word shoulder will include an annular rib, one side of an annular groove or the underside of a head such as head 44.
After the head has been inserted in the ring, the ends of the ears may be pressed inwardly against the underside thereof to eliminate substantially all play from the connection so that there will be no backlash or lost motion between the float lever and fuel valve during operation of the float mechanism. In the embodiment shown in Figure 1, as the quantity of fuel in the fuel bowl decreases, the float is adapted to positively lift the fuel valve from its seat without having to depend on the fuel supply pressure to unseat the valve.
In the embodiment shown in Figures 3, 4 and 5, the
2,702,562 Ce Patented Feb. 22, 1955 ears 40 and 42 are stamped or otherwise severed from the float lever on three sides, leaving the ears integrally connected to the lever on the fourth side near the outside edge of the lever. A bar 48 is left between the two ears. The cars are bent downwardly to provide a triangularly-shaped support into which the head of the fuel valve is inserted. The ends of cars 40 and 42 fit snugly under the head 44 of the valve, holding the fuel valve in close relationship to the float lever so that no appreciable play exists in the connection. The principal advantage of this arrangement over the first embodiment is that this arrangement may be fabricated with fewer operations.
Although Figure 5 illustrates the modified form of a float lever, fuel valve connection, this figure also shows a horizontal fuel inlet valve and a modified form of float lever. This valve and float lever arrangement may be used equally as well in the embodiment of Figures 1 and 2. Further arrangements and modifications may be made in the present float mechanism without departing from the scope of the invention.
I claim:
1. In a fuel control mechanism for a float type carburetor, comprising a fuel inlet valve having an annular shoulder, a float, a lever joined to said float having a longitudinal center portion for engaging one end of said valve and having ears extending from each side thereof forming an open ring-shaped member, the ends of said ears being disposed adjacent said shoulder on opposite sides of said valve and adapted to hold said valve end in contact with said center portion.
2. In a fuel control mechanism for a float type carburetor comprising a fuel inlet valve having an annular groove near the end opposite the valve seat, a float, a pivoted lever joined to said float having a longitudinal center portion for engaging one end of said valve and having ears of resilient material extending outwardly from each side of said lever, each of said ears being bent in a smooth curve extending below the plane of said lever to extend toward each other in alignment with each other, the free ends of said ears being disposed in said groove on opposite sides of said valve and adapted to hold said valve end in contact with said center portion.
3. A fuel inlet control mechanism for a float type carburetor comprising a fuel inlet valve having an annular shoulder near one end thereof, a lever having a longitudinal center portion for engaging one end of said valve, a float secured to one end of said lever, and a pair of ears joined to opposite outside edges of said lever near the other end thereof, the free ends of said ears being adapted to embrace said shoulder on opposite sides of said valve and' adapted to hold said valve end in contact with said center portion.
4. A fuel inlet control mechanism for a carburetor comprising a fuel inlet valve having an annular groove near one end thereof, a float, a lever joined to said float and having a longitudinal center portion for engaging one.
end of said valve, ears extending outwardly from each side of said lever and bent in a smooth curve extending below the plane of said lever to extend toward each other, the ends of said ears being adapted to extend into said groove on opposite sides of said valve and adapted to hold said valve end in contact with said center portion, and a pivot for said lever between said float and said ears.
5. A control mechanism for a fuel valve having an annular shoulder thereon comprising a lever having a longitudinal center portion for engaging one end of said valve, a float secured to said lever, and a pair of resilient ears joined to said lever on opposite outside edges thereof and spaced from said float, said ears extending from said lever toward one another and being adapted to engage said shoulder on opposite sides of said valve to hold said valve end in contact with said center portion.
6. A control means for a fuel inlet valve having an annular shoulder thereon comprising a flat sheet metal lever, a valve engaging means on said lever including a center member for engaging the end of said valve, a slot on each side of said member, and deformable clamping elements adjacent said slots adapted to engage said annular shoulder and to be pressed firmly against said shoulder whereby a snug fit is obtained between said valve and said lever.
7. A control means for a fuel inlet valve having an annular shoulder thereon comprising a lever of flat sheet metal material, a longitudinal center member adjacent one end of the lever for engaging the end of said valve, a slot on each side of said member, and a clamping element joined to said lever along each side thereof adjacent said slots and extending inwardly for engaging said annular shoulder.
8. A control means for a fuel inlet valve having an annular shoulder thereon comprising a flat sheet metal lever, a longitudinal member in the center of said lever for engaging the end of said valve, a slot on each side of said member, a longitudinal member along each side of said lever adjacent said slots, and a valve engaging element extending inwardly at an angle to said lever from the inside edge of each of said side members.
9. A control means for a fuel inlet valve having an annular shoulder thereon comprising a pivoted lever of sheet metal material, a longitudinal member in the center of said lever for engaging the end of said valve, a slot on each side of said member, a longitudinal member adjacent said slots along each side of said lever, and an element resiliently secured to and extending inwardly at an angle to said lever from the inside edge of each of said members for engaging the shoulder on said valve.
References Cited in the file of this patent UNITED STATES PATENTS 312,687 White Feb. 24, 1885 1,015,053 Mayer Jan. 16, 1912 1,129,428 Salisbury Feb. 23, 1915 1,313,858 Edge Aug. 19, 1919 1,422,054 July 4, 1922 1,463,907 Olson Aug. 7, 1923 1,614,800 1927 1,717,966 1929 1,802,135 Carter Apr. 21, 1931 1,838,829 Hewig Dec 29, 1931 1,956,777 Slagel May 1, 1934 2,164,927 Fohler July 4, 1939 FOREIGN PATENTS 6,242 Great Britain Mar. 13, 1912 18,687 Great Britain Sept. 5, 1908
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004748A (en) * 1959-07-16 1961-10-17 Vernco Corp Float valve
US3026900A (en) * 1959-05-11 1962-03-27 Hieger Robert Henry Carburetor float clip
US3034529A (en) * 1958-11-03 1962-05-15 Holley Carburetor Co Float hinge adapier
US3153422A (en) * 1962-11-02 1964-10-20 Holley Carburetor Co Float controlled fuel bowl

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US312687A (en) * 1885-02-24 Peter white
GB190818687A (en) * 1907-11-16 1909-06-17 Julian William Revy Improvements in Ball or other Float Valves.
US1015053A (en) * 1909-10-14 1912-01-16 Godfried J Mayer Gasolene feed-chamber.
GB191206242A (en) * 1912-03-13 1913-03-13 Hugh Donald Fitzpatrick An Improved Ball or Float Cock.
US1129428A (en) * 1915-02-23 Standard Separator Company Carbureter.
US1313858A (en) * 1919-08-19 Vaiivb
US1422054A (en) * 1917-06-26 1922-07-04 William A Heide Carburetor
US1463907A (en) * 1921-04-14 1923-08-07 Olson John Float-controlled valve
US1614800A (en) * 1925-10-26 1927-01-18 Adolph Mueller Ball valve
US1717966A (en) * 1925-01-02 1929-06-18 Raymond L Foster Water-feed control for liquid-fuel burners
US1802135A (en) * 1927-07-15 1931-04-21 William C Carter Carburetor
US1838829A (en) * 1930-02-24 1931-12-29 H B Sherman Mfg Company Mixing laundry faucet
US1956777A (en) * 1930-01-09 1934-05-01 Fedders Mfg Co Inc Refrigerant control mechanism for evaporators
US2164927A (en) * 1938-08-11 1939-07-04 Carl J Kohler Float valve

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US312687A (en) * 1885-02-24 Peter white
US1129428A (en) * 1915-02-23 Standard Separator Company Carbureter.
US1313858A (en) * 1919-08-19 Vaiivb
GB190818687A (en) * 1907-11-16 1909-06-17 Julian William Revy Improvements in Ball or other Float Valves.
US1015053A (en) * 1909-10-14 1912-01-16 Godfried J Mayer Gasolene feed-chamber.
GB191206242A (en) * 1912-03-13 1913-03-13 Hugh Donald Fitzpatrick An Improved Ball or Float Cock.
US1422054A (en) * 1917-06-26 1922-07-04 William A Heide Carburetor
US1463907A (en) * 1921-04-14 1923-08-07 Olson John Float-controlled valve
US1717966A (en) * 1925-01-02 1929-06-18 Raymond L Foster Water-feed control for liquid-fuel burners
US1614800A (en) * 1925-10-26 1927-01-18 Adolph Mueller Ball valve
US1802135A (en) * 1927-07-15 1931-04-21 William C Carter Carburetor
US1956777A (en) * 1930-01-09 1934-05-01 Fedders Mfg Co Inc Refrigerant control mechanism for evaporators
US1838829A (en) * 1930-02-24 1931-12-29 H B Sherman Mfg Company Mixing laundry faucet
US2164927A (en) * 1938-08-11 1939-07-04 Carl J Kohler Float valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034529A (en) * 1958-11-03 1962-05-15 Holley Carburetor Co Float hinge adapier
US3026900A (en) * 1959-05-11 1962-03-27 Hieger Robert Henry Carburetor float clip
US3004748A (en) * 1959-07-16 1961-10-17 Vernco Corp Float valve
US3153422A (en) * 1962-11-02 1964-10-20 Holley Carburetor Co Float controlled fuel bowl

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