Automatic thermal cutout for use with mail box indicator and door signal

Claim 1

AN ELECTRIC CUT-OUT MECHANISM COMPRISING, IN COMBINATION: (A) A BASE, (B) A PAIR OF COOPERABLE RESILIENT SWITCH BLADES HAVING LATERALLY MOVABLE END PORTIONS, SAID BLADES BEING MOUNTED ON THE BASE AND DISPOSED SUBSTANTIALLY PARALLEL TO EACH OTHER, ONE OF SAID BLADES BEING BIASED AWAY FROM THE OTHER, (C) A BIMETALLIC ARM AT ONE END CARRIED BY THE BASE AND EXTENDING SUBSTANTIALLY PERPENDICULAR TO THE SWITCH BLADE, SAID ARM AT ITS FREE END BEING LATERALLY MOVABLE AND ABUTTING SAID ONE BLADE ADJACENT THE FREE END THEREOF FOR MAINTAINING THE BLADE ENGAGED WITH SAID OTHER BLADER, SAID ONE BLADE AND SAID ARM CONSTITUTING AN ANGULAR STRUCTURE HAVING A HOLLOW WHICH IS SPANNED BY THE BASE, (D) ELECTRIC HEATER MEANS DISPOSED ADJACENT THE BIMETALLIC ARM TO EFFECT A FLEXING OF THE SAME WHEN THE HEATER MEANS IS ENERGIZED, THEREBY TO DISENGAGE THE ARM FROM SAID ONE BLADE TO ENABLE SEPARATION OF THE LATTER FROM THE OTHER BLADE, AND (E) A MANUAL RESET PLUNGER MOVABLE CARRIED BY THE BASE AND HAVING A FREE PORTION EXTENDING FROM THE BASE INTO SAID HOLLOW OF THE ANGULAR STRUCTURE, SAID FREE PORTION BEING ENGAGEABLE WITH THE SAID ONE BLADE TO MOVE THE THE LATTER AGAINST ITS BIAS, THEREBY TO RESTORE THE ENGAGEMENT OF THE BLADES AND ABUTMENT OF THE ONE BLADE BY THEA BIMETALLIC ARM WHEN THE ARM IS COLD, SAID PLUNGER INITIALLY ENGAGING SAID ONE BLADE AT AN ACUTE ANGLE AND SUBJECTING THE BLADE TO A CAMMING ACTION.