Hot bearing detector

Claim 2

IN COMBINATION, A JOURNAL BOX, A BEARING HOUSED IN SAID BOX, A TUBE FASTENED AT ONE END TO SAID BEARING AND PROTRUDING DOWNWARDLY THROUGH SAIDBOX, A RADIOACTIVE PELLET POSITIONED WITHIN SAID TUBE, FUSIBLE MEANS IN HEAT TRANSFER RELATIONSHIP TO SAID BEARING AND MOUNTED IN SAID TUBE TO SUPPORT SAID PELLET, WHEREBY UPON OVERHEATING OF SAID BEARING SAID FUSIBLE MEANS RELEASES SAID PELLET TO FALL THROUGH SAID TUBE, AND MEANS LOCATED AT THE PROTRUDING END OF SAID TUBE TO RETAIN SAID PELLET IN A PARTLY EXPOSED POSITION, AND A RADIATION DETECTOR LOCATED OUTSIDE OF SAID BOX TO RESPOND TO RADIATION FROM SAID PELLET IN ITS EXPOSED POSITION.

Claim 3

A HOT BEARING DETECOTR, COMPRSIING, IN COMBINATION, A RAILWAY JOURNAL BOX HAVING AN EXPOSED BASE, A BEARING ENCLOSED IN SAID JOURNAL BOX, A RADIOACTIVE ELEMENT MOUNTED EXTERNALLY ON THE BASE OF SAID BOX, A SHIELD MOUNTED ON SAID JOURNAL BOX FOR MOVEMENT BETWEEN A POSITION SHIELDING SAID ELEMENT AND A POSITION EXPOSING SAID ELEMENT, MEANS INCLUDING A FUSIBLE LINK IN HEAT TRANSFER RELATION TO SAID BEARING CONNECTED BETWEEN SAID BEARING AND SHIELD TO HOLD SAID SHIELD IN ITS SHIELDING POSITION, MEANS FOR RESILIENTLY BIASING SAID SHILED TO ITS ELEMENT EXPOSING POSITION,S AND A RADIATION DETECTOR MOUNTED BELOW SAID BOX TO RESPOND TO EXPOSED RADIATION FROM SAID ELEMENT.

Claim 4

A HOT BEARING DETECOTR, COMPRSIING, IN COMBINATION, A RAILWAY JOURNAL BOX HAVING AN EXPOSED BASE, A BEARING ENCLOSED IN SAID JOURNAL BOX, A RADIOACTIVE ELEMENT MOUNTED EXTERNALLY ON THE BASE OF SAID BOX, A SHIELD MOUNTED ON SAID JOURNAL BOX FOR MOVEMENT BETWEEN A POSITION SHIELDING SAID ELEMENT AND A POSITION EXPOSING SAID ELEMENT, MEANS INCLUDING A FUSIBLE LINK IN HEAT TRANSFER RELATION TO SAID BEARING CONNECTED BETWEEN SAID BEARING AND SHIELD TO HOLD SAID SHIELD IN ITS SHIELDING POSITION, MEANS FOR RESILIENTLY BIASING SAID SHILED TO ITS ELEMENT EXPOSING POSITION,S AND A RADIATION DETECTOR MOUNTED BELOW SAID BOX TO RESPOND TO EXPOSED RADIATION FROM SAID ELEMENT.