Carburetor choke

Claim 2

In a carburetor assembly, the combination of: means forming a primary passage adapted to supply a lean mixture to a main combustion chamber of an engine, means forming an auxiliary passage adapted to supply a rich mixture to an auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means mounting said shafts for turning movement, means coordinating the turning movements of said shafts, a choke valve mounted to turn in said primary passage upstream from the throttle valve therein, means including a shaft for actuAting said choke valve, and means for moving the primary throttle valve in accordance with movement of the choke actuating means, whereby movement of the choke actuating means serves to move both the primary throttle valve and the auxiliary throttle valve.

Claim 3

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve, and means for moving the main throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 4

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve, and means for moving the main throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 5

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, said means including an arm connected to turn with each of said shafts, respectively, a link pivotally connected to each of said arms, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve and means for moving the primary throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 6

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, said means including an arm connected to turn with each of said shafts, respectively, a link pivotally connected to each of said arms, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve and means for moving the primary throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 7

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, said means including an arm connected to turn with each of said shafts, respectively, a link pivotally connected to each of said arms, means for adjusting the angular position of one of the arms with respect to its respective shaft, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve and means for moving the primary throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 8

A carburetor assembly for use with an internal combustion engine having at least one main combustion chamber and an auxiliary combustion chamber connected thereto by a torch nozzle, said carburetor assembly having, in combination: a primary passage adapted to supply a lean mixture to the main combustion chamber of the engine, an auxiliary passage adapted to supply a rich mixture to the auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means for coordinating turning movements of said shafts, said means including an arm connected to turn with each of said shafts, respectively, a link pivotally connected to each of said arms, means for adjusting the angular position of one of the arms with respect to its respective shaft, a choke valve in said primary passage upstream from the throttle valve in that passage, means for actuating said choke valve and means for moving the primary throttle valve in response to movement of said actuating means, whereby movement of the actuating means for the choke valve causes movement of both of the throttle valves.

Claim 9

The combination set forth in claim 4 in which the adjusting means is provided for the arm associated with the auxiliary throttle shaft.

Claim 10

In a carburetor assembly, the combination of: means forming a primary passage adapted to supply a lean mixture to a main combustion chamber of an engine, an auxiliary passage adapted to supply a rich mixture to an auxiliary combustion chamber of an engine, each of the passages having a throttle valve therein carried on a shaft, means mounting said shafts for turning movement, means coordinating the turning movements of said shafts, a choke valve mounted to turn in said primary passage upstream from the throttle valve therein, means including a shaft for actuating said choke valve, said choke actuating means including a member mounted to turn about the axis of the choke shaft, said member having a cam surface thereon, and means including a follower engaging the cam surface for moving the primary throttle valve in accordance with movement of said member.

Claim 11

In a carburetor assembly, the combination of: means forming a primary passage adapted to supply a lean mixture to a main combustion chamber of an engine, an auxiliary passage adapted to supply a rich mixture to an auxiliary combustion chamber of an engine, each of the passages having a throttle valve therein carried on a shaft, means mounting said shafts for turning movement, means coordinating the turning movements of said shafts, a choke valve mounted to turn in said primary passage upstream from the throttle valve therein, means including a shaft for actuating said choke valve, said choke actuating means including a member mounted to turn about the axis of the choke shaft, said member having a cam surface thereon, and means including a follower engaging the cam surface for moving the primary throttle valve in accordance with movement of said member.

Claim 12

In a carburetor assembly, the combination of: means forming a primary passage adapted to supply a lean mixture to a main combustion chamber of an engine, means forming an auxiliary passage adapted to supply a rich mixture to an auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means mounting said shafts for turning movement, means coordinating the turning movements of said shafts, a choke valve mounted on a shaft to turn in said primary passage upstream from the throttle valve therein, a choke actuating member mounted to turn about the axis of the choke shaft, said member having a cam surface thereon, a limiter mounted to turn about an axis spaced from the choke shaft, a follower on the limiter engaging the cam surface, a rotary member mounted to turn about the axis of the choke shaft and having an element engageable with the limiter, a vacuum breaker connected to actuate said rotary member, and means including a follower engaging the cam surface for moving the primary throttle valve in accordance with movement of said choke actuating member.

Claim 13

In a carburetor assembly, the combination of: means forming a primary passage adapted to supply a lean mixture to a main combustion chamber of an engine, means forming an auxiliary passage adapted to supply a rich mixture to an auxiliary combustion chamber of the engine, each of the passages having a throttle valve therein carried on a shaft, means mounting said shafts for turning movement, means coordinating the turning movements of said shafts, a choke valve mounted on a shaft to turn in said primary passage upstream from the throttle valve therein, a choke actuating member mounted to turn about the axis of the choke shaft, said member having a cam surface thereon, a limiter mounted to turn about an axis spaced from the choke shaft, a follower on the limiter engaging the cam surface, a rotary member mounted to turn about the axis of the choke shaft and having an element engageable with the limiter, a vacuum breaker connected to actuate said rotary member, and means including a follower engaging the cam surface for moving the primary throttle valve in accordance with movement of said choke actuating member.

Claim 14

In a carburetor assembly, the combination of: means forming a passage adapted to supply an air-fuel mixture to an internal combustion engine, a throttle valve mounted to turn in the passage, a choke valve mounted on a shaft to turn in said passage upstream from the throttle valve therein, a member mounted to turn about the axis of the choke shaft, means for coordinating the movements of the choke shaft and throttle valve, a temperature responsive member connected to turn the choke shaft, a limiter mounted to turn about an axis spaced from the choke shaft, temperature responsive means for turning said limiter, a rotary member mounted to turn about the axis of the choke shaft, said rotary member having an element engageable with the limiter to limit the extent of turning movement of said rotary member, means whereby said rotary member limits the turning movement of the choke shaft, and a vacuum breaker connected to actuate said rotary member.

Claim 15

In a carburetor assembly, the combination of: means forming a passage adapted to supply an air-fuel mixture to an internal combustion engine, a throttle valve mounted to turn in the passage, a choke valve mounted on a shaft to turn in said passage upstream from the throttle valve therein, a member mounted to turn about the axis of the choke shaft, means for coordinating the movements of the choke shaft and throttle valve, a temperature responsive member connected to turn the choke shaft, a limiter mounted to turn about an axis spaced from the choke shaft, temperature responsive means for turning said limiter, a rotary member mounted to turn about the axis of the choke shaft, said rotary member having an element engageable with the limiter to limit the extent of turning movement of said rotary member, means whereby said rotary member limits the turning movement of the choke shaft, and a vacuum breaker connected to actuate said rotary member.