US2737825A - Choke convertor - Google Patents

Choke convertor Download PDF

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Publication number
US2737825A
US2737825A US252359A US25235951A US2737825A US 2737825 A US2737825 A US 2737825A US 252359 A US252359 A US 252359A US 25235951 A US25235951 A US 25235951A US 2737825 A US2737825 A US 2737825A
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United States
Prior art keywords
lever
choke
control
carburetor
casing
Prior art date
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Expired - Lifetime
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US252359A
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Emil O Plockelman
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Individual
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Priority to US252359A priority Critical patent/US2737825A/en
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Publication of US2737825A publication Critical patent/US2737825A/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
    • F02M1/02—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling being chokes for enriching fuel-air mixture
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/20—Control mechanisms not otherwise provided for
    • 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
    • Y10T137/5109—Convertible
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • Y10T74/2045—Flexible transmitter [e.g., Bowden cable] and sheath support, connector, or anchor

Definitions

  • This invention relates to manual choke controls and more particularly to an automotive accessory to convert an automatic choke to manual control.
  • Another object is to provide a mechanical actuator for an automatic choke carburetor which will insure positive actuation of the choke valve.
  • a further object is to provide a manual choke actuator which will be simple to manufacture and cheap to install.
  • a still further object is to provide a manual control for an automatic choke carburetor which will enable the choke to be controlled from the dashboard.
  • Fig. 1 is an elevational view of the face of a choke control embodying the invention and showing also adjacent parts of the carburetor;
  • Fig. 2 is a cross-section taken on the line 22 of Fig. 1, looking in the direction of the arrows.
  • the carburetor casing contains a throttle valve controlled by a throttle lever 12.
  • the throttle lever 12 is controlled from within the car by the foot throttle so that depressing the foot throttle rotates the lever 12 to increase the speed of the car.
  • a Venturi throat 14 leads to a butterfly choke valve 15.
  • the choke valve 15 is mounted on a rod 16, which rod is rotatably supported in the casing 10 of the carburetor so that rotation of the rod 16 rotates the valve 15 to vary the opening through the carburetor.
  • the rotation of the rod 16 is controlled by a lever 18 fixed on the end of the rod.
  • the lever 18 is mounted in a cup-shaped housing 20 and has an outturned finger 22 atits outer end which extends parallel to the rod 16 and extends beyond the rim of the housing 20.
  • the manual control comprises a disc 25 which is clamped onto the rim of the housing 20 by a pair of ICC 2 fingers 27-27 held to the carburetor casing 10 by screws 2828.
  • the disc 25 has an arcuate slot 30 cut therethroug h adjacent its upper end to receive the outstanding finger 22 of the lever 18;
  • The-disc 25- has'a'1ever"32"pivotally mounted at the center of 'the' disc 25-ona rivet 33:
  • the upper end of the lever 32 has an aperture 35 which receives the outer end of the finger 22 of the lever 18.
  • the lower end of the lever 32 has an end portion 36 offset sufficiently to clear a bar 38 which bar is secured to the disc 25.
  • the offset portion 36 of the lever 32 receives a binding post 39 which is pivotally mounted thereon.
  • the binding post 39 has an aperture therethrough which receives the end of a control wire 40, the control wire being held in the binding post 39 by a screw 42.
  • the control wire 40 is encased in a cable 45 which extends between the dashboard 46 of the car and the carburetor 10.
  • the cable 45 is secured to the outer end of the bar 33 by a clamp 48.
  • the other end of the cable is secured under the dashboard 46 by a nut 50.
  • the wire 41 extends through the cable 45 and terminates in a knob 53 on the face of the dashboard 46.
  • the knob 53 may be pulled out from the dashboard rotating the lever 32. Rotation of the lever 32 causes a corresponding rotation of the lever 13 opening the choke valve 15 and enriching the mixture.
  • the wire 40 maintains the valve 15 in the adjusted position.
  • an actuating lever including a finger projecting from said casing, a manual control for said lever comprising a plate having an arcuate aperture through which said finger extends, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with one end of said second lever engageable with the finger, a control cable secured to the plate and a control wire movable through said cable and secured to said second lever to actuate the control lever.
  • a manual control for said lever comprising a plate having an arcuate aperture therethrough, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with a hole in one end of said second lever engageable over the finger, a binding post pivotally secured to said second lever, a control wire secured to said binding post to actuate the first named lever and a control cable receiving said wire to guide the same.
  • a manual control for said lever comprising a plate having an aperture therein through which the finger projects, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with a hole in one end of said second lever engageable over the finger, a binding post pivotally secured to the end of said second lever opposite said finger, a control wire secured to said binding post to actuate the first named Patented Mar. 13, 1956 lever and a control cable receiving said wire to guide the same.

Description

March 13, 1956 E, O. PLOCKELMAN CHOKE CONVERTOR Filed Oct. 20, 1951 IN VEN TOR.
United States Patenc CHOKE CONMERTOR Emil 0. Plockelman, Whitefish Bay, Wis.
Application October 20, 1951, Serial No. 252,359
3 Claims. (Cl. 74-501) This invention relates to manual choke controls and more particularly to an automotive accessory to convert an automatic choke to manual control.
Most automobiles now being sold come equipped with automatic chokes which automatically provide a richer gasoline mixture during periods of starting the car or while the engine is cold. Such automatic chokes do not always remain satisfactory to the car users many of whom wish to convert to a mechanical choke control. This conversion in the past has entailed either a complete new carburetor or a make-shift mechanical control.
It is an object of the present invention to provide a mechanical actuator for an automatic choke carburetor.
Another object is to provide a mechanical actuator for an automatic choke carburetor which will insure positive actuation of the choke valve.
A further object is to provide a manual choke actuator which will be simple to manufacture and cheap to install.
A still further object is to provide a manual control for an automatic choke carburetor which will enable the choke to be controlled from the dashboard.
Still further objects of the invention will become apparent from the following specification, which, when taken in conjunction with the accompanying drawings illustrates a preferred form of the invention.
In the drawings:
Fig. 1 is an elevational view of the face of a choke control embodying the invention and showing also adjacent parts of the carburetor; and
Fig. 2 is a cross-section taken on the line 22 of Fig. 1, looking in the direction of the arrows.
Referring to the drawings, the carburetor casing contains a throttle valve controlled by a throttle lever 12. The throttle lever 12 is controlled from within the car by the foot throttle so that depressing the foot throttle rotates the lever 12 to increase the speed of the car.
A Venturi throat 14 leads to a butterfly choke valve 15.
The choke valve 15 is mounted on a rod 16, which rod is rotatably supported in the casing 10 of the carburetor so that rotation of the rod 16 rotates the valve 15 to vary the opening through the carburetor. The rotation of the rod 16 is controlled by a lever 18 fixed on the end of the rod.
The lever 18 is mounted in a cup-shaped housing 20 and has an outturned finger 22 atits outer end which extends parallel to the rod 16 and extends beyond the rim of the housing 20.
When the automobile comes from the factory it ordinarily has an automatic choke control mounted on the rim of the housing 20, which automatically adjusts the setting of the valve 15 in accordance with the need of the engine. Since many motorists have found such automatic chokes undesirable the present manual control has been designed to replace the automatic control.
The manual control comprises a disc 25 which is clamped onto the rim of the housing 20 by a pair of ICC 2 fingers 27-27 held to the carburetor casing 10 by screws 2828.
The disc 25 has an arcuate slot 30 cut therethroug h adjacent its upper end to receive the outstanding finger 22 of the lever 18;
The-disc 25-has'a'1ever"32"pivotally mounted at the center of 'the' disc 25-ona rivet 33: The upper end of the lever 32 has an aperture 35 which receives the outer end of the finger 22 of the lever 18.
The lower end of the lever 32 has an end portion 36 offset sufficiently to clear a bar 38 which bar is secured to the disc 25. The offset portion 36 of the lever 32 receives a binding post 39 which is pivotally mounted thereon.
The binding post 39 has an aperture therethrough which receives the end of a control wire 40, the control wire being held in the binding post 39 by a screw 42.
The control wire 40 is encased in a cable 45 which extends between the dashboard 46 of the car and the carburetor 10. The cable 45 is secured to the outer end of the bar 33 by a clamp 48. The other end of the cable is secured under the dashboard 46 by a nut 50.
The wire 41 extends through the cable 45 and terminates in a knob 53 on the face of the dashboard 46.
Operation In operation, when it is desired to enrich the mixture, the knob 53 may be pulled out from the dashboard rotating the lever 32. Rotation of the lever 32 causes a corresponding rotation of the lever 13 opening the choke valve 15 and enriching the mixture. The wire 40 maintains the valve 15 in the adjusted position.
It will be realized that the hereinbefore described form of the invention is to be taken merely as a preferred embodiment thereof and that variously changes in size, shape and arrangement of parts may be made without departing from the spirit of the invention or the scope of the subjoined claims.
That which is claimed as new and is desired to be secured by United States Letters Patent is:
1. In a carburetor having a casing, an actuating lever including a finger projecting from said casing, a manual control for said lever comprising a plate having an arcuate aperture through which said finger extends, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with one end of said second lever engageable with the finger, a control cable secured to the plate and a control wire movable through said cable and secured to said second lever to actuate the control lever.
2. In a carburetor having a casing, an actuating lever on the exterior of the casing and an outstanding finger on said lever, a manual control for said lever comprising a plate having an arcuate aperture therethrough, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with a hole in one end of said second lever engageable over the finger, a binding post pivotally secured to said second lever, a control wire secured to said binding post to actuate the first named lever and a control cable receiving said wire to guide the same.
3. In a carburetor having a casing, a lever on the exterior of the casing andan outstanding finger on said lever, a manual control for said lever comprising a plate having an aperture therein through which the finger projects, means to secure the plate on the exterior of said casing, a second lever pivotally secured to said plate with a hole in one end of said second lever engageable over the finger, a binding post pivotally secured to the end of said second lever opposite said finger, a control wire secured to said binding post to actuate the first named Patented Mar. 13, 1956 lever and a control cable receiving said wire to guide the same.
References Cited in he file of this patent UNITED STATES PATENTS Weinberg Oct. 6, 1936 10 4 Wirth et a1. Dec. 22, 1936 OConnor Oct. 19, 1937 Kalbreier May 17, 1938 Van Horn Feb. 27, 1945 Moore Dec. 4, 1951 Moore Oct. 7, 1952 FOREIGN PATENTS Great Britain Apr. 12, 1950
US252359A 1951-10-20 1951-10-20 Choke convertor Expired - Lifetime US2737825A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893419A (en) * 1957-05-03 1959-07-07 Albert L Coulter Hand-choke conversion unit
US3945267A (en) * 1969-02-26 1976-03-23 Chrysler Corporation Adjustable connector
US4280682A (en) * 1979-06-04 1981-07-28 Eaton Corporation Cam actuated butterfly valve
US4285499A (en) * 1979-03-05 1981-08-25 Eaton Corporation Cam actuated butterfly valve
US20130206093A1 (en) * 2012-02-10 2013-08-15 Briggs & Stratton Corporation Choke override for an engine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1260464A (en) * 1917-04-17 1918-03-26 Shakespeare Co Control device.
US1399984A (en) * 1921-12-13 de glopper
US1912678A (en) * 1929-07-13 1933-06-06 Clum Mfg Co Carburetor choke control
US2056549A (en) * 1934-08-25 1936-10-06 Sidney Cohen Speed control device
US2065167A (en) * 1932-09-23 1936-12-22 Bendix Aviat Corp Choke valve
US2096058A (en) * 1935-02-04 1937-10-19 Union Asbestos & Rubber Co Handwheel operated mechanism
US2117963A (en) * 1936-08-06 1938-05-17 Robert J Kalbreier Speed control
US2370213A (en) * 1944-04-25 1945-02-27 William T Van Horn Intervalometer
GB635426A (en) * 1948-04-08 1950-04-12 Alfred Thomas Austin An improved lever control device connected to sheathed cable mechanism for operating brakes, clutches, and other purposes
US2577260A (en) * 1948-07-28 1951-12-04 Alex D Karpoff Carburetor choke mechanism
US2612790A (en) * 1948-07-28 1952-10-07 Alex D Karpoff Carburetor choke mechanism

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1399984A (en) * 1921-12-13 de glopper
US1260464A (en) * 1917-04-17 1918-03-26 Shakespeare Co Control device.
US1912678A (en) * 1929-07-13 1933-06-06 Clum Mfg Co Carburetor choke control
US2065167A (en) * 1932-09-23 1936-12-22 Bendix Aviat Corp Choke valve
US2056549A (en) * 1934-08-25 1936-10-06 Sidney Cohen Speed control device
US2096058A (en) * 1935-02-04 1937-10-19 Union Asbestos & Rubber Co Handwheel operated mechanism
US2117963A (en) * 1936-08-06 1938-05-17 Robert J Kalbreier Speed control
US2370213A (en) * 1944-04-25 1945-02-27 William T Van Horn Intervalometer
GB635426A (en) * 1948-04-08 1950-04-12 Alfred Thomas Austin An improved lever control device connected to sheathed cable mechanism for operating brakes, clutches, and other purposes
US2577260A (en) * 1948-07-28 1951-12-04 Alex D Karpoff Carburetor choke mechanism
US2612790A (en) * 1948-07-28 1952-10-07 Alex D Karpoff Carburetor choke mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893419A (en) * 1957-05-03 1959-07-07 Albert L Coulter Hand-choke conversion unit
US3945267A (en) * 1969-02-26 1976-03-23 Chrysler Corporation Adjustable connector
US4285499A (en) * 1979-03-05 1981-08-25 Eaton Corporation Cam actuated butterfly valve
US4280682A (en) * 1979-06-04 1981-07-28 Eaton Corporation Cam actuated butterfly valve
US20130206093A1 (en) * 2012-02-10 2013-08-15 Briggs & Stratton Corporation Choke override for an engine
US10215130B2 (en) * 2012-02-10 2019-02-26 Briggs & Stratton Corporation Choke override for an engine

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