Auto-choke device

An automatic choke for an internal combustion engine comprising a choke valve movable within a induction passage between an opened position and a closed position, biasing means for urging said choke valve to one of said positions, an automatic actuator for applying a biasing force upon said choke valve in response to temperature variations for moving said choke valve to the other of its positions in opposition to the action of said biasing means, and a manual actuator operatively connected to said choke valve for operating said choke valve comprising a pivotally supported lever having a slot receiving a pin affixed for rotation with the choke valve for providing a lost motion connection between said manual actuator and said choke valve, said lever being pivotal through a range of movement wherein said lever will engage said pin for rotating said pin sufficiently to move said choke valve between its positions.

A selective automatic or manually actuated mechanism for cold enrichment of an internal combustion engine comprising an enrichment valve movable between a normal running position and an enrichment position, a temperature responsive element movable in response to temperature variations between a low temperature position and a normal temperature position, coupling means for coupling said temperature responsive element to said enrichment valve for moving said enrichment valve between its positions in response to movement of said temperature responsive element between its positions, said coupling means being operative between an operative condition wherein said temperature responsive element is coupled to said enrichment valve and a released condition wherein said temperature responsive element and said enrichment valve may each move between their positions without movement of the other, disconnection means for moving said coupling means to said released condition, and manual operating means for manually moving said enrichment valve.