Cutter head with self-cleaning clutch and brake

Claim 1

IN A FORAGE HARVESTER HAVING A CUTTER HEAD, MEANS FOR DRIVING THE HEAD INCLUDING AN OVERRUNNING CLUTCH HAVING A RELATIVELY THIN GENERALLY CYLINDRICAL HOUSING PORTION CONSTRAINED FOR ROTATION WITH THE HEAD, AND HEAT GENERATING BRAKE MEANS INCLUDING A BRAKE BAND FRICTIONALLY ENGAGEABLE WITH THE HOUSING ALONG A SUBSTANTIAL EXTERNAL PERIPHERAL EXTENT THEREOF FOR STOPPING THE HEAD AND COINCIDENTALLY HEATING THE HOUSING THROUGH FRICTIONAL ENGAGEMENT THEREWITH SAID HOUSING BEING OF SUFFICIENT THINNESS TO CAUSE SAID BRAKE MEANS WHEN ENGAGED TO HEAT THE INTERIOR THEREOF TO VAPORIZE CONDENSATION AND FOREIGN MATERIAL THEREON AND FREE ABRASIVE ACCRETIONS ACCIDENTIALLY ENTERED INTO THE HOUSING, SAID OVERRUNNING CLUTCH INCLUDING PAWL MEANS AND TEETH WITHIN THE HOUSING, SAID PAWL MEANS ADAPTED TO JAR THE ACCERTION WITHIN THE HOUSING LOOSE THEREFORM COINCIDENTALLY WITH THE APPLICATION OF SAID BRAKE BAND HEATING SAID HOUSING WHEREBY CAUSING SAID ACCRETIONS TO LOOSEN FROM THE HOUSING, AND SAID HOUSING HAVING AN OPENING AT ONE END THEREOF ORIENTED TO GRAVITATIONALLY DISCHARGE SAID ACCRETIONS THEREFROM.