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US3346244A - Jet air idle screw - Google Patents

Jet air idle screw Download PDF

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Publication number
US3346244A
US3346244A US490861A US49086165A US3346244A US 3346244 A US3346244 A US 3346244A US 490861 A US490861 A US 490861A US 49086165 A US49086165 A US 49086165A US 3346244 A US3346244 A US 3346244A
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Prior art keywords
carburetor
jet air
screws
sleeve
idle
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Expired - Lifetime
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US490861A
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Cornelius G Bess
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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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/10—Fuel metering pins; Nozzles
    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/38—Needle valves

Definitions

  • the main object of the present invention is to provide an improved type of air idle carburetor screws having selfcontained means to give more power to the automobile engine through increased air pressure, and to be used in lieu of the usual carburetor idling screws.
  • Another object of the present invention is to provide a jet air idle screw which employs a pair of screws and associated funnel cups for receiving air to be delivered through the screws into the carburetor of the vehicle.
  • Still another object of the present invention is to provide a pair of jet air idle screws, each of which has means for passing air therethrough from the funnel cups into the carburetor and wherein the screws are adjustable.
  • FIGURE 1 is a fragmentary front perspective view of an automotive vehicle shown employing the present invention.
  • FIGURE 2 is a side View of a carburetor showing a modified application of the invention.
  • FIGURE 3 is a cross-sectional view through one of the screws of the present invention.
  • FIGURE 4 is a cross-sectional view through a needle that fits within the sleeve illustrated in FIGURE 3.
  • FIGURE 5 is an end elevational view of the needle.
  • FIGURE 6 is a cross-sectional view taken on line 6 6 of FIGURE 4.
  • the numeral 10 represents a jet air idle screw invention wherein there are a pair of screw units 11.
  • Each of the screw units .11 is comprised of a sleeve 12 and needle 13, the needle being fitted within the sleeve.
  • the sleeve comprises an elongated tubular member having an external thread 14 at one end for being threadedly secured into the side 15 of a carburetor 16.
  • At the opposite end of the sleeve there is an enlarged head 18 of circular coniiguration having a knurled cylindrical side 19.
  • An opening 20 extends through the sleeve and is screw-threaded at an intermediate portion as shown at 21.
  • the opening 20 is flared at the end having the knurled head as shown at 22.
  • the needle comprises an elongated member having a head 23 at one end and a tapered point 24 at the opposite end thereof.
  • the needle is provided with an external thread 25 along an intermediate portion of the needle and adjacent the head 23.
  • a compression coil spring 26 of relatively few turns is positioned around the needle body adjacent the head 23.
  • the needle is provided with a pair of air passages 27 extending longitudinally through a major portion of the needle, the air passages opening out upon the end wall 28 of the head to permit air to enter therein.
  • the opposite ends of the openings 27 communicate with 3,346,244 Patented Oct. 10, 1967 transverse grooves 29 permitting air to pass out of the needle and into the carburetor when the screw unit is secured thereto.
  • One end of a hose 30 is secured to one end of the screw unit and the opposite end of each hose is attached to a funnel cup 31.
  • the funnel cup 31 is of generally conical configuration having an opening 32 in the end thereof to permit air to enter therewithin.
  • FIGURE l a form of the invention is illustrated for use of the device during summertime wherein the funnel cups are located immediately behind the grill 33 of an automobile 34 for receiving air from ahead as the car moves forwardly.
  • a dust shield 35 comprised of a frame 36 of circular configuration within which there is a fine wire mesh 37 for purpose of iiltering the air before it enters the funnel cups and into the carburetor.
  • FIGURE 2 a modilied application of the invention is shown for wintertime use.
  • the funnel cups 31 are mounted within the air intake horn 38 of the carburetor 16.
  • air is brought through the funnel cups through the hose then through the screw units into the carburetor where it causes the gasoline to atomize into a better spray mixture of air and gas at idling and at high speed of the vehicle.
  • the idling screws will thus improve the mileage to be derived from each gallon of gasoline. It is estimated that the present idling screws will increase between 41/2 to 61/2 miles per gallon of gasoline for the average car. It is to be understood that the needle is adjustable relative to the sleeve so as to obtain the correct accurate amount of air to be delivered through the idling screws.
  • a carburetor system the combination of a carburetor, a pair of jet air idle screws, said jet air idle screws being secured to said carburetor and extending into said carburetor idle system, a hose secured to each end on the outer end of each of said jet air idle screws, the opposite ends of each of said hoses being secured to a funnel cup for receiving air therewithin to be delivered through said hose into said jet air idle screws and into said carburetor, each of said jet air idle screws comprising a sleeve element and a needle element, said needle element being adjustably secured within said sleeve element for adjusting the quantity of air to be delivered through said jet air idle screw, said sleeve comprising an elongated tubular member having a central opening extending therethrough, a central portion of said opening being screw threaded, said sleeve having an external thread at one end for securement to said carburetor, an enlarged knurled head at the opposite end and said opening through said
  • said funnel cup comprises a conical member having an end opening and having a dust cap in front of said opening, said dust cap comprising a frame having a iine wire mesh.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

Oct. 10, v1967 C, G B555 3,346,244
JET AIR IDLE SCREW Filed Sept. 28, 1965 WW i 27 United States Patent O 3,346,244 JET AIR IDLE SCREW Cornelius G. Bess, Bangor, Maine (1108 2nd Ave., Honolulu, Hawaii 96816) Filed Sept. 28, 1965, Ser. No. 490,861 4 Claims. (Cl. 261-41) This invention relates generally to automotive devices and more speciiically to carburetor idling devices,
The main object of the present invention is to provide an improved type of air idle carburetor screws having selfcontained means to give more power to the automobile engine through increased air pressure, and to be used in lieu of the usual carburetor idling screws.
Another object of the present invention is to provide a jet air idle screw which employs a pair of screws and associated funnel cups for receiving air to be delivered through the screws into the carburetor of the vehicle.
Still another object of the present invention is to provide a pair of jet air idle screws, each of which has means for passing air therethrough from the funnel cups into the carburetor and wherein the screws are adjustable.
Other objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.
In the drawing:
FIGURE 1 is a fragmentary front perspective view of an automotive vehicle shown employing the present invention.
FIGURE 2 is a side View of a carburetor showing a modified application of the invention.
FIGURE 3 is a cross-sectional view through one of the screws of the present invention.
FIGURE 4 is a cross-sectional view through a needle that fits within the sleeve illustrated in FIGURE 3.
FIGURE 5 is an end elevational view of the needle.
FIGURE 6 is a cross-sectional view taken on line 6 6 of FIGURE 4.
Referring now to the drawing, in detail, the numeral 10 represents a jet air idle screw invention wherein there are a pair of screw units 11. Each of the screw units .11 is comprised of a sleeve 12 and needle 13, the needle being fitted within the sleeve. The sleeve comprises an elongated tubular member having an external thread 14 at one end for being threadedly secured into the side 15 of a carburetor 16. Adjacent the thread 14 there is an enlarged shoulder 17 which bears against the side 15 of the carburetor, between shoulder 17 and the carburetor is lock nut 99. At the opposite end of the sleeve there is an enlarged head 18 of circular coniiguration having a knurled cylindrical side 19. An opening 20 extends through the sleeve and is screw-threaded at an intermediate portion as shown at 21. The opening 20 is flared at the end having the knurled head as shown at 22.
The needle comprises an elongated member having a head 23 at one end and a tapered point 24 at the opposite end thereof. The needle is provided with an external thread 25 along an intermediate portion of the needle and adjacent the head 23. A compression coil spring 26 of relatively few turns is positioned around the needle body adjacent the head 23. The needle is provided with a pair of air passages 27 extending longitudinally through a major portion of the needle, the air passages opening out upon the end wall 28 of the head to permit air to enter therein. The opposite ends of the openings 27 communicate with 3,346,244 Patented Oct. 10, 1967 transverse grooves 29 permitting air to pass out of the needle and into the carburetor when the screw unit is secured thereto. One end of a hose 30 is secured to one end of the screw unit and the opposite end of each hose is attached to a funnel cup 31. The funnel cup 31 is of generally conical configuration having an opening 32 in the end thereof to permit air to enter therewithin.
In FIGURE l a form of the invention is illustrated for use of the device during summertime wherein the funnel cups are located immediately behind the grill 33 of an automobile 34 for receiving air from ahead as the car moves forwardly.
Immediately in front of the opening 32 there is a dust shield 35 comprised of a frame 36 of circular configuration within which there is a fine wire mesh 37 for purpose of iiltering the air before it enters the funnel cups and into the carburetor.
In FIGURE 2 a modilied application of the invention is shown for wintertime use.
In wintertime use, the funnel cups 31 are mounted within the air intake horn 38 of the carburetor 16.
In operative use, air is brought through the funnel cups through the hose then through the screw units into the carburetor where it causes the gasoline to atomize into a better spray mixture of air and gas at idling and at high speed of the vehicle. The idling screws will thus improve the mileage to be derived from each gallon of gasoline. It is estimated that the present idling screws will increase between 41/2 to 61/2 miles per gallon of gasoline for the average car. It is to be understood that the needle is adjustable relative to the sleeve so as to obtain the correct accurate amount of air to be delivered through the idling screws.
What I now claim is:
1. In a carburetor system, the combination of a carburetor, a pair of jet air idle screws, said jet air idle screws being secured to said carburetor and extending into said carburetor idle system, a hose secured to each end on the outer end of each of said jet air idle screws, the opposite ends of each of said hoses being secured to a funnel cup for receiving air therewithin to be delivered through said hose into said jet air idle screws and into said carburetor, each of said jet air idle screws comprising a sleeve element and a needle element, said needle element being adjustably secured within said sleeve element for adjusting the quantity of air to be delivered through said jet air idle screw, said sleeve comprising an elongated tubular member having a central opening extending therethrough, a central portion of said opening being screw threaded, said sleeve having an external thread at one end for securement to said carburetor, an enlarged knurled head at the opposite end and said opening through said sleeve being tiaired at the end adjacent said enlarged head, said needle comprising an elongated member having an enlarged head at one end, an intermediate portion adjacent said head being externally threaded for engagement with said threaded opening of said sleeve, a pair of parallel, spaced apart openings extending longitudinally through said needle head, through a major portion of said needle and communicating with a pair of transverse grooves near the opposite end of said needle, each of said grooves communicating with one of said openings in said needle and said central opening in said sleeve, and the opposite end of said needle having a tapered point for adjustable alignment with a constricted portion of said central opening of said sleeve.
2. In a carburetor system the combination as set forth in claim 1 wherein, said funnel cup comprises a conical member having an end opening and having a dust cap in front of said opening, said dust cap comprising a frame having a iine wire mesh.
3. In a carburetor system the combination as set forth in claim 2 wherein, said funnel cups are located behind 5 the front grill of an automobile.
References Cited UNITED STATES PATENTS 6/1931 Chestnutt 261-63 Pogue 261-4l Shaf 261--41 X Kaddis et al. 261-41 X Schlichting.
Conant et al. 261-41 Kalert 261--41 Phillips 261-41 X HARRY B. THORNTON, Primary Examiner.
6/193() McKinley 260 41 X 10 TIM R. MILES, Examiner.

Claims (1)

1. IN A CARBURETOR SYSTEM, THE COMBINATION OF A CARBURETOR, A PAIR OF JET AIR IDLE SCREWS, SAID JET AIR IDLE SCREWS BEING SECURED TO SAID CARBURETOR AND EXTENDING INTO SAID CARBURETOR IDLE SYSTEM, A HOSE SECURED TO EACH END ON THE OUTER END OF EACH OF SAID JET AIR IDLE SCREWS, THE OPPOSITE ENDS OF EACH OF SAID HOSES BEING SECURED TO A FUNNEL CUP FOR RECEIVING AIR THEREWITHIN TO BE DELIVERED THROUGH SAID HOSE INTO SAID JET AIR IDLE SCREWS AND INTO SAID CARBURETOR, EACH OF SAID JET AIR IDLE SCREWS COMPRISING A SLEEVE ELEMENT AND A NEEDLE ELEMENT, SAID NEEDLE ELEMENT BEING ADJUSTABLY SECURED WITHIN SAID SLEEVE ELEMENT FOR ADJUSTING THE QUANTITY OF AIR TO BE DELIVERED THROUGH SAID JET AIR IDLE SCREW, SAID SLEEVE COMPRISING AN ELONGATED TUBULAR MEMBER HAVING A CENTRAL OPENING EXTENDING THERETHROUGH, A CENTRAL PORTION OF SAID OPENING BEING SCREW THREADED, SAID SLEEVE HAVING AN EXTERNAL THREAD AT ONE END FOR SECUREMENT TO SAID CARBURETOR,
US490861A 1965-09-28 1965-09-28 Jet air idle screw Expired - Lifetime US3346244A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834675A (en) * 1973-04-30 1974-09-10 Us Air Force Metering injector valve
US3865907A (en) * 1973-01-17 1975-02-11 Howard P Rock Needle valve vapor injection and method
US3875922A (en) * 1973-04-18 1975-04-08 Jr Frank Kirmss Vapor injection system
US3896194A (en) * 1974-06-06 1975-07-22 Frank T Martin Carburetor idle control means
US4215661A (en) * 1978-08-28 1980-08-05 Metal Elio C.A. Una compania de acuerdo con las Leyes Venezolanas Mixture regulating device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1767599A (en) * 1924-05-27 1930-06-24 Tillotson Mfg Co Carburetor
US1809103A (en) * 1924-05-15 1931-06-09 St Regis Paper Co Sealed package and method of making the same
US1997497A (en) * 1934-11-03 1935-04-09 Pogue Charles Nelson Carburetor
US2156128A (en) * 1934-10-31 1939-04-25 Bendix Prod Corp Carburetor
US2816573A (en) * 1953-09-18 1957-12-17 Albert G Kaddis Carburetor metering valve screws
US3077341A (en) * 1960-04-01 1963-02-12 Acf Ind Inc Carburetor
US3166611A (en) * 1962-09-06 1965-01-19 Robert L Conant Carburetor
US3231249A (en) * 1962-07-30 1966-01-25 Acf Ind Inc Carburetor
US3233878A (en) * 1961-08-25 1966-02-08 Tillotson Mfg Co Charge forming apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809103A (en) * 1924-05-15 1931-06-09 St Regis Paper Co Sealed package and method of making the same
US1767599A (en) * 1924-05-27 1930-06-24 Tillotson Mfg Co Carburetor
US2156128A (en) * 1934-10-31 1939-04-25 Bendix Prod Corp Carburetor
US1997497A (en) * 1934-11-03 1935-04-09 Pogue Charles Nelson Carburetor
US2816573A (en) * 1953-09-18 1957-12-17 Albert G Kaddis Carburetor metering valve screws
US3077341A (en) * 1960-04-01 1963-02-12 Acf Ind Inc Carburetor
US3233878A (en) * 1961-08-25 1966-02-08 Tillotson Mfg Co Charge forming apparatus
US3231249A (en) * 1962-07-30 1966-01-25 Acf Ind Inc Carburetor
US3166611A (en) * 1962-09-06 1965-01-19 Robert L Conant Carburetor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865907A (en) * 1973-01-17 1975-02-11 Howard P Rock Needle valve vapor injection and method
US3875922A (en) * 1973-04-18 1975-04-08 Jr Frank Kirmss Vapor injection system
US3834675A (en) * 1973-04-30 1974-09-10 Us Air Force Metering injector valve
US3896194A (en) * 1974-06-06 1975-07-22 Frank T Martin Carburetor idle control means
US4215661A (en) * 1978-08-28 1980-08-05 Metal Elio C.A. Una compania de acuerdo con las Leyes Venezolanas Mixture regulating device

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