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US2218145A - Gas carburetor - Google Patents

Gas carburetor Download PDF

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Publication number
US2218145A
US2218145A US30348739A US2218145A US 2218145 A US2218145 A US 2218145A US 30348739 A US30348739 A US 30348739A US 2218145 A US2218145 A US 2218145A
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United States
Prior art keywords
valve
housing
diaphragm
stem
carburetor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
William E Clayton
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Individual
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Priority to US30348739 priority Critical patent/US2218145A/en
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Publication of US2218145A publication Critical patent/US2218145A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/04—Gas-air mixing apparatus
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87281—System having plural inlets
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87676—With flow control
    • Y10T137/87684—Valve in each inlet
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88054—Direct response normally closed valve limits direction of flow

Definitions

  • a further object is Ito provide a carburetor of thistype whichmay be Yeasily adjusted from the 4exterior of the carburetor, and which will-employ a--double valve vconstruction in which a diaphragm lwill opena small gas 'valve ⁇ to feed gasto the engine under the influence of a very small amount of vacuum created by the pistons, the diaphragm subsequently opening falarge :gas valve when the engine needs more gas.
  • "A Vfurther object is to provide a carburetor of this type which will "ce formed of a few strong simple and durable parts which will 'be' inexpen-j sive to manufacture and which will noteasily get outof order. f
  • v Figure 1 is a longitudinal sectional viewof a carburetor constructed in accordance ⁇ with the invention.
  • Figure'Z is a longitudinal sectional view of the carburetor shown in Figure 1 showing the diaphragm holding both valves open.
  • Figure 3 is a cross sectional view, drawn to small scale, and taken on the line 3 3 of Figure 1.
  • the gas carburetor includes a circular housing I0 formed of similar sections I I and I2, of cast metal, having respective annular flanges I3 and I4 between which is secured a rubber diaphragm I5, by means of a plurality of bolts I6 which hold the sections together.
  • a threaded valve stem I'I is engaged axially through the housing and is provided on its lower end with a small valve I8.
  • vA disc I9 is threaded at its center onto the valve stem Il below the diaphragm I5.
  • a second disc 2D is loosely mounted at its center on the valve stern and engages the top surface of the diaphragm.
  • a tubular member 2l is threaded onto the valve stem and abuts the upper disc 20.
  • the tubular member is slidedly engaged in an opening 22 formed inthe upper section ⁇ I I and projectsabove the section vto receive a helical spring 23 which is sleeved on the member and at thebottom bears upon a bo ⁇ s ⁇ s24 which is integral with the top ⁇ of the Vsection II.
  • the spring bearsagainst a washer 25 which is conned' on the 'valve stem at the top thereof through the-medium of a nut 26.
  • the small valve I8 seats in a valve seat 21T coin-y centrically disposed in a large disc valve 28 having a tubular stem-29 projecting loosely through a relatively large axial port 3B formed in the bottom of the lower section I2 of the housing.
  • the tubu-L lar stem is of greater internal diameter than the external diameter of thevalve stem I'I and extends to a point ljustbelow the lower disc I9.
  • a lower series of ports 3i is formed vin the tubular stem 29 near the bottom thereof andan upper series of ⁇ ports 32 isl formed in the stem near vthe top thereof.
  • a pipe 33 is formed integral with the bottom section and is internally threadedto be screwed onto alnatural ⁇ gas supply pipe, not shown.
  • a vent 34 l is formed in the side of the upper section to permit atmospheric pressure to act. upon the diaphragm above the valves 21 and 28.
  • a mixing chamber comprising a cylindrical body 36 having the upper end thereof closed by a top wall 3l provided with an arcuate slot 38.
  • a cup-shaped member 39 is provided with a bottom wall 40 which is pivotally secured to the top wall 3l of the mixing chamber through the medium of a pivot bolt 4I.
  • the cup-shaped member is provided With an arcaute slot 42 adapted to be joined into full register or part register with the slot 3B in the mixing chamber when the cup-shaped member 39 is rotated axially to regulate the amount of air drawn into the mixing chamber from the atmosphere to the cup-shaped member 39.
  • 'I'he bottom of the mixing chamber ⁇ is open and is adapted to communicate with the Y air-intake of a conventional carburetor of an internal combustion engine.
  • a valve 43 is seated on a seat 44 formed on the v phragm I5 will be pulled downwardly with re- V sultant opening of the small valve I8 to feed the natural gas to the mixing chamber.
  • the diaphragm will be moved downwardly through the space between it and the top of the tubular stem 29 until it impinges against the top of the tubular valve stem, as shown in Figure 2, to open the large valve 28 and permit more gas to be fed to the mixing chamber.
  • a natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above the diaphragm, an inlet pipe for natural gas connected to the bottom of the housing, an axially disposed valve stem in the housing connected to the diaphragm and projecting above the housing, a helical spring sleeved on the valve stem above the housing tending to hold the diaphragm against displacement, a small valve on said stem, a large disc valve seating againstthe vbottom of the housing in said inlet pipe and having a seat receiving said small valve, and a tubular stem for the large valve extending upwardly in the housing to a point adjacent thesdiaphragm, the arrangement being suchthat a small vacuum created underneath the diaphragm by suction will force open the small valve and subsequently increased vacuum will displace the diaphragm to impinge the same against said tubular lvalve stem and open the large valve.
  • a natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above ⁇ the diaphragm, an inlet pipe 'for natural gas connected to the bottom of the hous- ⁇ ing, an axially disposed valve stem in the housing connected to the diaphragm and projecting above the housing, a helical spring sleeved on the valve stem above the housing tending to hold the dia# phragm against displacement, a small valve on said stem, a large disc valve seating against the bottom of the housing in said inlet pipe and having a seat receiving said small valve, a tubular stem for the large valve disposed concentric with the stem of the small valve, said tubular stem extending loosely through an inletport in the bottom of the housing and being of greater inner diameter than the small valve stem, said tubular stem being open at the top and having lateral outlet A openings, said tubular stem extending up- Wardly in the housing to a point adjacent the
  • a natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above the diaphragm, an inlet pipe for natural gas connected to the bottom'of the yhousing, an axially disposedfvalve stem in the housing connected to the diaphragm and projecting above thehousing, a helical spring sleeved on the'valve ,stem above the housingtending to hold the diaphragm against displacement, a small valve on said stem, a large disc valve seating against the bottom of the housing in said inlet pipe and having.
  • a seat receiving said small valve, a vti'lsbular stemior Atherlarge valve extending upwardly in the housing to a point adjacent the diaphragm, an outlet pipe connected tothe housing vbelow the diaphragm, a-mixing Ychamber connected tothe loutlet pipe and forming a continuation of theair-v intake of a conventional carburetor, andvalve meansfin the mixing chamberffor ⁇ regulating the air supply, the arrangement being such vthata small vacuum created underneath Ythe diaphragm by suction through the conventional carburetor will force open the small valve and subsequently increased vacuum will displace the'diaphragm to impinge the same against said tubular-valve stem and open .the large valve. y f I WILLIIAM E. CLAYTON. I

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)

Description

Oct. l5, 1940. w. E. CLAYTON GAS cAxuaEToa Filed Nov. 8. 1939 ATTOR N EYS Patented Oct. 15, 1940 'UNITED STATES 4PM151m- OFFICE GAS CRBURETOR WilliamE. Clayton, Independence, Kans. Y l
Application November 8, 1939, Serial No. 303,487 s claims. (o1. @1s-18o) vThis invention relates to gas carburetors and has for an objectlto provide a carburetor which may be attached to the air-intake of a conventional gasoline carburetor so that the'internal combustion engine may run on gasoline'for lield work and on naturalgas for stationary work.
v A further object is Ito provide a carburetor of thistype whichmay be Yeasily adjusted from the 4exterior of the carburetor, and which will-employ a--double valve vconstruction in which a diaphragm lwill opena small gas 'valve `to feed gasto the engine under the influence of a very small amount of vacuum created by the pistons, the diaphragm subsequently opening falarge :gas valve when the engine needs more gas. "A Vfurther object is to provide a carburetor of this type which will "ce formed of a few strong simple and durable parts which will 'be' inexpen-j sive to manufacture and which will noteasily get outof order. f
" "With the-above and other objects in -view'the invention consists of certain novel details of construction and combinations of parts-hereinafter fully-described and claimed, it being understoodl that various modiiications may be resorted to` within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.
In the accompanying drawing forming part o this specification,
vFigure 1 is a longitudinal sectional viewof a carburetor constructed in accordance` with the invention.
Figure'Z is a longitudinal sectional view of the carburetor shown in Figure 1 showing the diaphragm holding both valves open.
Figure 3 is a cross sectional view, drawn to small scale, and taken on the line 3 3 of Figure 1.
Referring now to the drawing in which like characters of reference designate similar parts in the various views, the gas carburetor includes a circular housing I0 formed of similar sections I I and I2, of cast metal, having respective annular flanges I3 and I4 between which is secured a rubber diaphragm I5, by means of a plurality of bolts I6 which hold the sections together.
A threaded valve stem I'I is engaged axially through the housing and is provided on its lower end with a small valve I8. vA disc I9 is threaded at its center onto the valve stem Il below the diaphragm I5. A second disc 2D is loosely mounted at its center on the valve stern and engages the top surface of the diaphragm. A tubular member 2l is threaded onto the valve stem and abuts the upper disc 20. The tubular member is slidedly engaged in an opening 22 formed inthe upper section `I I and projectsabove the section vto receive a helical spring 23 which is sleeved on the member and at thebottom bears upon a bo`s`s24 which is integral with the top `of the Vsection II. The spring bearsagainst a washer 25 which is conned' on the 'valve stem at the top thereof through the-medium of a nut 26.
' The small valve I8 seats in a valve seat 21T coin-y centrically disposed in a large disc valve 28 having a tubular stem-29 projecting loosely through a relatively large axial port 3B formed in the bottom of the lower section I2 of the housing. The tubu-L lar stem is of greater internal diameter than the external diameter of thevalve stem I'I and extends to a point ljustbelow the lower disc I9. A lower series of ports 3i is formed vin the tubular stem 29 near the bottom thereof andan upper series of `ports 32 isl formed in the stem near vthe top thereof. j
A pipe 33 is formed integral with the bottom section and is internally threadedto be screwed onto alnatural `gas supply pipe, not shown. A vent 34 lis formed in the side of the upper section to permit atmospheric pressure to act. upon the diaphragm above the valves 21 and 28.
Connected by a pipe 35 to the lower section I2 of the housing is a mixing chamber comprising a cylindrical body 36 having the upper end thereof closed by a top wall 3l provided with an arcuate slot 38. A cup-shaped member 39 is provided with a bottom wall 40 which is pivotally secured to the top wall 3l of the mixing chamber through the medium of a pivot bolt 4I. The cup-shaped member is provided With an arcaute slot 42 adapted to be joined into full register or part register with the slot 3B in the mixing chamber when the cup-shaped member 39 is rotated axially to regulate the amount of air drawn into the mixing chamber from the atmosphere to the cup-shaped member 39. 'I'he bottom of the mixing chamber` is open and is adapted to communicate with the Y air-intake of a conventional carburetor of an internal combustion engine.
A valve 43 is seated on a seat 44 formed on the v phragm I5 will be pulled downwardly with re- V sultant opening of the small valve I8 to feed the natural gas to the mixing chamber. However, when the engine speed increases and greater vacuum is pulled upon the diaphragm, the diaphragm will be moved downwardly through the space between it and the top of the tubular stem 29 until it impinges against the top of the tubular valve stem, as shown in Figure 2, to open the large valve 28 and permit more gas to be fed to the mixing chamber.
From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.
What is claimed is:
1. A natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above the diaphragm, an inlet pipe for natural gas connected to the bottom of the housing, an axially disposed valve stem in the housing connected to the diaphragm and projecting above the housing, a helical spring sleeved on the valve stem above the housing tending to hold the diaphragm against displacement, a small valve on said stem, a large disc valve seating againstthe vbottom of the housing in said inlet pipe and having a seat receiving said small valve, and a tubular stem for the large valve extending upwardly in the housing to a point adjacent thesdiaphragm, the arrangement being suchthat a small vacuum created underneath the diaphragm by suction will force open the small valve and subsequently increased vacuum will displace the diaphragm to impinge the same against said tubular lvalve stem and open the large valve.
2. A natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above `the diaphragm, an inlet pipe 'for natural gas connected to the bottom of the hous-` ing, an axially disposed valve stem in the housing connected to the diaphragm and projecting above the housing, a helical spring sleeved on the valve stem above the housing tending to hold the dia# phragm against displacement, a small valve on said stem, a large disc valve seating against the bottom of the housing in said inlet pipe and having a seat receiving said small valve, a tubular stem for the large valve disposed concentric with the stem of the small valve, said tubular stem extending loosely through an inletport in the bottom of the housing and being of greater inner diameter than the small valve stem, said tubular stem being open at the top and having lateral outlet A openings, said tubular stem extending up- Wardly in the housing to a point adjacent the diaphragm, and an outlet pipe for natural gas com-v municating with the housing below the diaphragm and adapted to be connected to the air-intake of a conventional carburetor.
3. A natural gas carburetor comprising a housing, a transversely disposed diaphragm in the housing, the housing being vented to the atmosphere above the diaphragm, an inlet pipe for natural gas connected to the bottom'of the yhousing, an axially disposedfvalve stem in the housing connected to the diaphragm and projecting above thehousing, a helical spring sleeved on the'valve ,stem above the housingtending to hold the diaphragm against displacement, a small valve on said stem, a large disc valve seating against the bottom of the housing in said inlet pipe and having. a seat receiving said small valve, a vti'lsbular stemior Atherlarge valve extending upwardly in the housing to a point adjacent the diaphragm, an outlet pipe connected tothe housing vbelow the diaphragm, a-mixing Ychamber connected tothe loutlet pipe and forming a continuation of theair-v intake of a conventional carburetor, andvalve meansfin the mixing chamberffor` regulating the air supply, the arrangement being such vthata small vacuum created underneath Ythe diaphragm by suction through the conventional carburetor will force open the small valve and subsequently increased vacuum will displace the'diaphragm to impinge the same against said tubular-valve stem and open .the large valve. y f I WILLIIAM E. CLAYTON. I
US30348739 1939-11-08 1939-11-08 Gas carburetor Expired - Lifetime US2218145A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645570A (en) * 1950-03-13 1953-07-14 Marion F Anderson Carburetor adapter
US2645884A (en) * 1949-12-01 1953-07-21 Edward P Kellie Pressure regulating valve
US2732170A (en) * 1956-01-24 Valves
US3065762A (en) * 1959-09-04 1962-11-27 Allis Chalmers Mfg Co Pilot type relief valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732170A (en) * 1956-01-24 Valves
US2645884A (en) * 1949-12-01 1953-07-21 Edward P Kellie Pressure regulating valve
US2645570A (en) * 1950-03-13 1953-07-14 Marion F Anderson Carburetor adapter
US3065762A (en) * 1959-09-04 1962-11-27 Allis Chalmers Mfg Co Pilot type relief valve

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