Control mechanism for a carburetor

A carburetor comprising an air induction passage, a choke valve operatively movable in said air induction passage, between a fully opened position and a fully closed position, a fuel chamber, a fuel inlet valve selectively operable for controlling introduction of fuel from a source into said fuel chamber, control means having an axis and being movable axially between axially spaced first and second positions, and through a center position intermediate said axially spaced first and second positions, said control means also being rotationally movable about said axis, and linkage means operatively connecting said control means with said choke valve and said fuel inlet valve for operating said choke valve between said fully opened position and said fully closed position in response to movement of said control means between said first and second axially spaced positions, and for operating said fuel inlet valve in response to rotational movement of said control means, said linkage means including over-center means for alternatively yieldably biasing said choke valve from an unstable center position toward said fully opened position when said control means is on said first position side of said center position and toward said fully closed position when said control means is on said second position side of said center position.

A carburetor comprising an air induction passage, a choke valve operatively movable in said air induction passage, a float bowl, a fuel inlet valve selectively operable for controlling introduction of fuel from a source into said float bowl, means including an orifice communicating between said float bowl and said air induction passage, control means having an axis and operative for movement axially along and rotationally about said axis, and linkage means operatively connecting said control means with said choke valve and said fuel inlet valve for operating said choke valve in response to one of the axial and rotational movements of said control means and regardless of the position of said control means in relation to the other of said movements, and for operating said fuel inlet valve in response to said other one of the axial and rotational movements of said control means and regardless of the position of said control means in relation to said one of said movements.