Arc chute for a circuit breaker

Claim 1

AN ARC CHUTE FOR CONFINING AND EXTINGUISHING AN ARC FORMED BETWEEN SEPARABLE ELECTRIC CONTACTS, SAID ARC CHUTE COMPRISING A WALL STRUCTURE HAVING FRONT AND REAR WALLS AND A PAIR OF SIDE WALLS DEFINING AN ARCING CHAMBER, SAID SIDE WALLS HAVING RESPECTIVE INWARDLY-DIRECTED FLANGE PORTIONS ALONG THEIR LOWER MARGINS EXTENDING INWARDLY TOWARD EACH OTHER, A PAIR OF RECESSES IN SAID INWARDLYDIRECTED FLANGE PORTIONS, RESPECTIVELY, A PAIR OF MAGNETIZABLE PLATE MEANS DISPOSED IN SAID RECESSES, RESPECTIVELY, A PLURALITY OF CONDUCTIVE MAGNETIZABLE PLATES, EACH OF SAID SIDE WALLS HAVING A PLURALITY OF HORIZONTALLY-SPACED GROOVES IN ITS INNER FACE EXTENDING UPWARDLY FROM SAID INWARDLY-DIRECTED FLANGE PORTION THEREOF TOWARD THE TOP EDGE THEREOF, SAID MAGNETIZABLE PLATES RESPECTIVELY HAVING THEIR SIDE EDGE PORTIONS RECEIVED, RESPECTIVELY, IN ALIGNED PAIRS OF SAID GROOVES AT THE LOWER PORTIONS THEREOF, A LOWER PERFORATED BAFFLE PLATE RESTING ON THE TOP OF SAID MAGNETIZABLE PLATES, A PLURALITY OF INSULATING PLATES, SAID INSULATING PLATES RESPECTIVELY HAVING THEIR SIDE EDGE PARTIONS RECEIVED RESPECTIVELY IN ALIGNED PAIRS OF SAID GROOVES ABOVE SAID LOWER BAFFLE PLATE AND BEING SUPPORTED BY SAID LOWER BAFFLE PLATE, AN UPPER PERFORATED BAFFLE PLATE RESTING ON THE TOP OF SAID INSULATING PLATES, A SINUOUS METAL SCREEN RESTING ON SAID UPPER BAFFLE PLATE, A RETAINING FRAME, A PAIR OF HORIZONTALLY DISPOSED GROOVES IN SAID SIDE WALL PORTIONS ADJACENT THE UPPER EDGES THEREOF, RESPECTIVELY, AND SAID RETAINING FRAME BEING SLIDABLY RECEIVED IN SAID HORIZONTAL GROOVES AND OVERLYING AN EDGE PORTION OF SAID METAL SCREEN.