Reel closure

Claim 1

A CLOSURE FOR A REEL HAVING A PAIR OF PARALLEL CIRCULAR FLANGES COMPRISING AN END WALL HAVING A WIDTH SLIGHTLY GREATER THAN THE WIDTH OF A REEL MEASURED BETWEEN THE OUTER SURFACES OF THE TWO REEL FLANGES AND SUBSTANTIALLY EQUAL IN LENGTH TO THE PERIMETER OF THE FLANGES AND ADAPTED TO COVER THE EDGE OF THE REEL ABOUT THE EDGES OF THE FLANGES, MEANS DEFINING A SLOT SECURED TO ONE END OF THE END WALL AND A TONGUE SECURED TO THE OTHER END OF SAID END WALL AND SLIDABLE IN THE SLOT AND TOGETHER FORMING THE END WALL INTO A CONTINUOUS RING, MANS OPERATIVELY CONNECTED TO THE TONGUE AND SLOT PREVENTING WITHDRAWAL OF THE TONGUE FROM THE SLOT FOR LIMITING ENLARGEMENT OF THE RING, A BASE FLANGE FORMING PART OF THE CLOSURE AND CONNECTED TO ONE SIDE EDGE OF THE END WALL AND NORMAL TO THE END WALL AND EXTENDING RADIALLY INWARDLY FROM THE END WALL OFOR BEARING AGAINST THE OUTSIDE OF ONE OF THE FLANGES OF THE REEL WHEN THE REEL IS DISPOSED WITHIN THE CLOSURE, SAID BASE FLANGE PREVENTING ENTRY OF THE REEL WITHIN THE END WALL FROM ITS SIDE OF SAID END WALL, A RIB MOUNTED ON THE END WALL AND SPACED FROM AND PARALLEL TO THE BASE FLANGE AND EXTENDING RADIALLY INWARDLY FROM THE WALL AND DEFINING A FIRST CHANNEL WITH THE BASE FLANGE FOR RECEIVING THE EDGE OF THE ONE FLANGE OF THE REEL WHEN THE CLOSURE COVERS THE EDGE OF THE REEL, AN ADDITIONAL PAIR OF RIBS EXTENDING RADIALLY INWARDLY FROM AND CARRIED BY THE END WALL AND SPACED FROM THE FIRST-NAMED RIB AND DEFINING A SECOND CHANNEL FOR RECEIVING THE EDGE OF THE OTHER FLANGE OF THE REEL WHEN THE EDGE OF SAID ONE FLANG LIES WITHIN THE FIRST CHANNEL, AND LOCKING MEANS SECURED TO THE ENDS OF THE END WALL FOR RELEASABLY RETAINING THE ENDS OF THE END WALL TOGETHER TO REDUCE THE SIZE OF THE RING TO A MINIMUM DIAMETER JUST SUFFICIENT TO RECEIVE THE EDGES OF THE REEL FLANGES IN THE CHANNELS.