USH463H - Carburetor spring retainer clip - Google Patents

Carburetor spring retainer clip Download PDF

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Publication number
USH463H
USH463H US06/712,068 US71206885A USH463H US H463 H USH463 H US H463H US 71206885 A US71206885 A US 71206885A US H463 H USH463 H US H463H
Authority
US
United States
Prior art keywords
clip
carburetor
rods
threads
metering
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.)
Abandoned
Application number
US06/712,068
Other languages
English (en)
Inventor
Robert F. Bollens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Motor Co
Original Assignee
Ford Motor Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ford Motor Co filed Critical Ford Motor Co
Priority to US06/712,068 priority Critical patent/USH463H/en
Assigned to FORD MOTOR COMPANY, A DE CORP. reassignment FORD MOTOR COMPANY, A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BOLLENS, ROBERT F.
Priority to GB08602541A priority patent/GB2172332B/en
Priority to JP61037534A priority patent/JPS61212658A/ja
Priority to DE19863608593 priority patent/DE3608593A1/de
Application granted granted Critical
Publication of USH463H publication Critical patent/USH463H/en
Abandoned 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
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284—Locking by means of elastic deformation

Definitions

  • This invention relates in general to an automotive type carburetor, and more particularly to a spring clip type retainer to prevent backing off of the adjustment screws of the carburetor due to engine vibration once it has been calibrated.
  • the invention relates to a simple C-shaped spring-like retainer clip that is hooked around and bears against the threaded shafts of a pair of adjacent carburetor fuel/air metering valves or screws to prevent the same from backing off during engine operation, which would change the fuel/air ratio of the mixture being suppled to the engine.
  • carburetors usually are provided with at least a primary idle jet located adjacent a main fuel metering assembly, each of which are threaded into a well or channel in the carburetor body at predetermined locations to accurately determine the correct flow of air and fuel through the carburetor. If, because of vibration or other causes, the metering valves or screws back off even slightly, the air/fuel ratio will change.
  • the invention eliminates this problem by providing a flexible spring metal retainer clip around the adjacent metering valves or screws to force thread engagement thereof with the carburetor body with a compressive force designed to prevent rotation of the shafts during normal operation of the carburetor and engine.
  • U.S. Pat. No. 270,877, Dunn shows a one piece curved spring with closed loop type ends engaging a pair of adjacent bolt shafts, the central portion of the spring being sprung to effect a vertical frictional force on the underside of the nuts to resist unthreading of the nut.
  • U.S. Pat. No. 637,426, Sparr shows a nut lock in which a thin wire is inserted into the grooves of the threaded portions of the shaft, and adjacent central portions are hooked together upon assembly to provide a tension resisting unthreading of the nuts.
  • U.S. Pat. No. 2,474,158, Neeley shows a one-piece clip of the flat, spring metal type, having large and smaller hook-like end portions with the larger portion rigidly fixed to the element and the smaller portion springably movable away therefrom to serve as an attaching member.
  • nut locks for use with member connecting bolt and nut type connections. None is for use with a threadedly adjustable shaft. None consists of a simple spring-type retainer clip that surrounds and bears against two adjacent shafts with an interference fit that provides a compressive force sufficient to prevent backing off or rotation of the shafts.
  • the invention provides a simple one piece continuous flat spring steel retainer clip with reversely bent end portions for engaging adjacent threaded shafts of metering valves or screws in a manner to effectively prevent rotation of the shafts due to vibration or other causes during operation of the engine upon which the carburetor is installed.
  • FIG. 1 is an enlarged cross-sectional view of a flexible spring retainer clip embodying the invention
  • FIG. 2 is a plan view of a carburetor in which a spring retainer clip embodying the invention is installed;
  • FIGS. 3 and 4 are cross-sectional views taken on planes indicated by and viewed in the direction of the arrows III--III and IV--IV, respectively, of FIG. 1.
  • FIGS. 2-4 show portions of a downdraft type carburetor. It the usual main body 10 within which is provided an air/fuel induction passage 12 open at its upper end to air at essentially atmospheric pressure discharged through an air cleaner (not shown). It would be flanged at its lower end 15 for attachment over the intake manifold of an automotive type internal combustion engine (not shown) to subject induction passage 12 to the changes in manifold vacuum levels in a known manner.
  • Induction passage 12 contains a butterfly type throttle valve 14 at its lower end that is pivotally mounted in the side walls of the carburetor for a rotatable movement across the passage from the essentially closed idle speed position shown to various more vertical open positions in response to demands by the vehicle operator.
  • the induction passage also contains the usual fixed area venturi 18 and a boost venturi 20 through which the main supply of fuel to the engine is obtained during part throttle and wide open throttle conditions of operation.
  • Fuel is supplied to boost venturi 20 through a passage 22 connected to a main metering assembly 24.
  • the latter is located in a main fuel metering channel 26 and includes an air/fuel mixture tube 28 of a diameter that controls the flow of fuel between it and channel 26.
  • the mixture tube is provided with a number of air emulsifier holes 30 through which air is drawn to atomize the fuel.
  • the upper end of the mixture tube is threaded to permit adjustment of the position of the tube and, therefore, the flow volume of fuel.
  • FIGS. 2 and 3 show the carburetor as having a pair of induction passages 12 each with a fixed area venturi and a boost venturi. It also has primary and secondary idle jet screws 34 and 36 and threaded primary and secondary fuel metering rods 38 and 40, each controlling the flow through various passages. In each case, the metering rods, valves or screws are threaded for adjustably positioning the member. It will be clear that once calibrated, the screws should remain in their set positions; otherwise, the ratio of fuel and air flow to the engine would drift or vary over a period of time. Vibration of the engine, for example, could cause a backing off of the screws or valves from their initial set positions, thereby requiring a recalibration of the carburetor.
  • FIG. 2 is a plan view of an essentially C-shaped flexible spring metal clip 50 constructed according to the invention. As seen in the figures, it comprises a continuous strip of flat spring steel, having reversely bent opposite end portions 52, 54 interconnected by a central body portion 56. In this particular case, the clip is adapted to bear against and partially surround an extension of the threaded shaft of both the idle jet and adjacent main metering rod. While the two are shown in this instance of differing diameters, it will be clear that the clip would be equally applicable to two adjacent metering rods or threaded members of equal diameter, the only difference then being that the opposite open ends would be of equal diameter.
  • the smaller diameter, essentially semi-circular, open end portion 54 extends circumferentially for approximately 180° from the central connecting portion to a hook shape that initially would be engaged around the one threaded shaft.
  • the opposite larger diameter end portion 52 of the clip is more open and extends circumferentially from the central portion for less than 180° or approximately 45° less than portion 54 to enable it to be sprung outwardly or bent arcuately to enable it to be assembled around the larger diameter threaded shaft of the adjacent metering jet.
  • the longitudinal extent of the clip in this case is slightly less than the distance between the radially outermost or diametrically opposite portions of the adjacent shafts to which it is assembled. This is to provide an interference fit between the two, thereby establishing upon assembly a continuous compressive force acting directly against the threads of the two shafts to thereby resist any rotation of the two.
  • the central body portion 56 of the clip is shown as having essentially a V-shape; however, this is primarily to accommodate and avoid interference with bleed hole 70 of the carburetor after assembly of the clip to the two adjacent shafts. It will be clear that the central portion could be straight or bent otherwise for other applications without departing from the scope of the invention.
  • the metering rods or screws each extend or project axially out of the carburetor body.
  • the flat portion of the clip is designed to extend axially over essentially the same distance to provide a frictional compressive force to each of the metering shafts which it surrounds.
  • the interference fit of the clip to the two shafts provides a continuous compressive force that is transmitted along the axial extent of the shafts to the threaded portions of the shafts in the carburetor body, and thereby provide a force that is highly resistive of rotation to maintain the metering valves or screws in their set calibrated positions regardless of a tendency of the latter to back off to other positions due to engine vibrations and temperature changes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)
US06/712,068 1985-03-15 1985-03-15 Carburetor spring retainer clip Abandoned USH463H (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US06/712,068 USH463H (en) 1985-03-15 1985-03-15 Carburetor spring retainer clip
GB08602541A GB2172332B (en) 1985-03-15 1986-02-03 Carburetor spring retainer clip
JP61037534A JPS61212658A (ja) 1985-03-15 1986-02-24 キヤブレタ用ばね式リテーナ・クリツプ
DE19863608593 DE3608593A1 (de) 1985-03-15 1986-03-14 Vergaser-federfeststellklammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/712,068 USH463H (en) 1985-03-15 1985-03-15 Carburetor spring retainer clip

Publications (1)

Publication Number Publication Date
USH463H true USH463H (en) 1988-05-03

Family

ID=24860656

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/712,068 Abandoned USH463H (en) 1985-03-15 1985-03-15 Carburetor spring retainer clip

Country Status (4)

Country Link
US (1) USH463H (enrdf_load_stackoverflow)
JP (1) JPS61212658A (enrdf_load_stackoverflow)
DE (1) DE3608593A1 (enrdf_load_stackoverflow)
GB (1) GB2172332B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331725A (en) * 1992-07-30 1994-07-26 Design Ideas, Ltd. Rod clip
US20120216375A1 (en) * 2011-02-24 2012-08-30 Arthur Druhl Accessory clip for a control bar on a walk behind mower

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6402125B1 (en) * 2000-03-29 2002-06-11 Walbro Corporation Carburetor valve rotational setting retainer assembly

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US270877A (en) 1883-01-16 Nut fastener
US339705A (en) 1886-04-13 smitten
US428789A (en) 1890-05-27 Nut-lock
US533024A (en) 1895-01-22 Cushion-holder
US561604A (en) 1896-06-09 Island
US597293A (en) 1898-01-11 Joseph a
US637426A (en) 1898-10-21 1899-11-21 Mary Sparr Nut-lock.
US1462714A (en) 1922-08-05 1923-07-24 Thomas E Marchand Pencil-holding clip
US1544627A (en) 1924-06-30 1925-07-07 Bateman Maurice John Nut lock
FR611578A (fr) 1926-06-30 1926-10-01 Clé-ressort de blocage d'écrous
US1816301A (en) 1930-07-07 1931-07-28 Carl J Sundell Hose clamp
US1861151A (en) 1930-10-20 1932-05-31 Abraham L Buschman Lamp socket clip
US2474158A (en) 1944-09-16 1949-06-21 Universal Wire Spring Co Spring clip
FR1411925A (fr) 1964-08-25 1965-09-24 Raymond A Attache en matière plastique pour la fixation d'une canalisation sur une autre dansles instruments, les appareils et carrosseries d'automobiles
US3391432A (en) 1967-01-16 1968-07-09 Essex Wire Corp Clasp for electrical conductors
DE1277974B (de) 1967-06-10 1968-09-19 Bremshey & Co Klemmschelle zur Halterung elektrischer Anschlusskabel
US3636595A (en) 1970-05-22 1972-01-25 David D Wines Coiling clip for coiling and storing linear flexible material
US3669491A (en) 1970-06-08 1972-06-13 Sturgis Co The Ganging device
US4346734A (en) 1980-11-03 1982-08-31 The Warner & Swasey Company Locking device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365845C (de) * 1922-12-22 Lutz Hermann Festhaltevorrichtung fuer Mehrlochschaltduesen bei Spritzvergasern
FR1228219A (fr) * 1959-03-09 1960-08-29 Raymond A Agrafe élastique
GB1438758A (en) * 1972-05-26 1976-06-09 United Carr Ltd Clip
GB1388502A (en) * 1972-11-29 1975-03-26 United Carr Ltd Clip
GB1599416A (en) * 1978-02-23 1981-09-30 Oldbury Ltd Isaiah Retaining clip
GB2092217A (en) * 1980-12-22 1982-08-11 United Carr Gmbh Element for retaining at least one elongate member, such as a pipe

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US270877A (en) 1883-01-16 Nut fastener
US339705A (en) 1886-04-13 smitten
US428789A (en) 1890-05-27 Nut-lock
US533024A (en) 1895-01-22 Cushion-holder
US561604A (en) 1896-06-09 Island
US597293A (en) 1898-01-11 Joseph a
US637426A (en) 1898-10-21 1899-11-21 Mary Sparr Nut-lock.
US1462714A (en) 1922-08-05 1923-07-24 Thomas E Marchand Pencil-holding clip
US1544627A (en) 1924-06-30 1925-07-07 Bateman Maurice John Nut lock
FR611578A (fr) 1926-06-30 1926-10-01 Clé-ressort de blocage d'écrous
US1816301A (en) 1930-07-07 1931-07-28 Carl J Sundell Hose clamp
US1861151A (en) 1930-10-20 1932-05-31 Abraham L Buschman Lamp socket clip
US2474158A (en) 1944-09-16 1949-06-21 Universal Wire Spring Co Spring clip
FR1411925A (fr) 1964-08-25 1965-09-24 Raymond A Attache en matière plastique pour la fixation d'une canalisation sur une autre dansles instruments, les appareils et carrosseries d'automobiles
US3391432A (en) 1967-01-16 1968-07-09 Essex Wire Corp Clasp for electrical conductors
DE1277974B (de) 1967-06-10 1968-09-19 Bremshey & Co Klemmschelle zur Halterung elektrischer Anschlusskabel
US3636595A (en) 1970-05-22 1972-01-25 David D Wines Coiling clip for coiling and storing linear flexible material
US3669491A (en) 1970-06-08 1972-06-13 Sturgis Co The Ganging device
US4346734A (en) 1980-11-03 1982-08-31 The Warner & Swasey Company Locking device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331725A (en) * 1992-07-30 1994-07-26 Design Ideas, Ltd. Rod clip
US20120216375A1 (en) * 2011-02-24 2012-08-30 Arthur Druhl Accessory clip for a control bar on a walk behind mower

Also Published As

Publication number Publication date
GB2172332B (en) 1988-07-27
DE3608593A1 (de) 1986-09-25
GB2172332A (en) 1986-09-17
JPS61212658A (ja) 1986-09-20
GB8602541D0 (en) 1986-03-12
DE3608593C2 (enrdf_load_stackoverflow) 1988-05-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FORD MOTOR COMPANY, DEARBORN, MI A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BOLLENS, ROBERT F.;REEL/FRAME:004401/0804

Effective date: 19850307

STCF Information on status: patent grant

Free format text: PATENTED CASE