Eiler

Claim 1

AUTOMATIC CHOKE MECHANISM FOR AN INTERNAL COMBUSION ENGINE HAVING A CARBURETOR THROTTLE VALVE, A CHOKE VALVE, MEANS BIASING THE THROTTLE VALVE TOWARD AN OPEN START POSITION, AND A GOVERNOR INCLUDING AN ELEMENT RESPONSIVE TO ENGINE SPEED AND CONNECTED TO MOVE THE THROTTLE VALVE, IN OPPOSITION TO SAID BIASING MEANS, TO A PARTIALLY-CLOSED RUNNING POSITION FOR GOVERNING THE SPEED OF THE ENGINE, SAID CHOKE MECHANISM COMPRISING LINKAGE MEANS ACTUATED WITH THE THROTTLE VALVE AND CONNECTED FOR ACTUATING THE CHOKE VALVE TOWARD CLOSED POSITION AS THE THROTTLE VALVE IS MOVED TOWARD OPEN POSITION, SAID LINKAGE MEANS INCLUDING TEMPERATURE-RESPONSIVE MEANS FOR VARYING THE EFFECTIVE LENGTH OF THE LINKAGE MEANS IN RESPONSE TO HEAT FROM THE ENGINE, SAID TEMPERATURE-RESPONSIVE MEANS HAVING A COLD CONDITION IN WHICH IT RENDERS SAID LINKAGE EFFECTIVE TO MOVE THE CHOKE VALVE TO FULL-CHOKE POSITION WHEN THE THROTTLE VALVE IS MOVED TO START POSITION AND TO HOLD THE CHOKE VALVE IN PARTIAL-CHOKE POSITION WHEN THE THROTTLE VALVE IS MOVED TO RUNNING POSITION, SAID TEMPERATURE-RESPONSIVE MEANS BEING OPERATIVE, IN RESPONSE TO HEAT FROM THE ENGINE, TO PROGRESSIVELY CHANGE THE EFFECTIVE LENGTH OF THE LINKAGE MEANS IN A DIRECTION TO REDUCE THE CHOKING ACTION PRODUCED, SAID LINKAGE MEANS ALSO INCLUDING A LOST-MOTION CONNECTION OPERATIVE TO TRANSMIT MOTION IN A CHOKECLOSING DIRECTION AND PERMITTING LOST MOTION IN THE OPPOSITE DIRECTION, THE RESPONSE OF SAID TEMPERATURE-RESPONSIVE MEANS TO ENGINE HEAT AT NORMAL OPERATING TEMPERATURE BEING SUFFICIENT TO CHANGE THE EFFECTIVE LENGTH OF THE LINKAGE MEANS TO ONE WHICH PERMITS THE CHOKE VALVE TO REMAIN IN NON-CHOKING POSITION AT ALL RUNNING POSITIONS OF THE THROTTLE VALVE.