Combination of strongbox and anchoring means

Claim 1

IN COMBINATION, A STRONGBOX COMPRISING A STRONG STIFF-WALLED TRAY, COPLANAR COEXTENSIVE PROTUBERANT SUBSTANTIALLY PARALLEL STRONG STIFF FLANGES RIGIDLY SECURED TO OPPOSITE SIDES OF THE TRAY, A STRONG STIFF COVER HAVING A FRONTAL LIP OVERLAYING ONE WALL OF THE TRAY, SAID COVER BEING PIVOTED TO THE TRAY ALONG THE WALL OPPOSITE SAID ONE WALL SO AS TO PROVIDE SELECTIVE ACCESS TO THE TRAY''S INTERIOR, ANCHORING MEANS FOR SAID STRONGBOX, SAID ANCHORING MEANS CONSTITUTING A STRONG STIFF FLAT BASE HAVING TWO OPPOSITE ENDS ONE OF WHICH IS AN ADMITTING END AND TWO OPPOSITE SIDES, SAID OPPOSITE SIDES BEING INWARDLY TURNED TO PRESENT TWO SUBSTANTIALLY PARALLEL FACING CHANNELS SLIDABLY RECEIVING SAID FLANGES, SAID FLAT BASE HAVING A PLURALITY OF APERTURES THEREIN FOR PASSAGE OF ATTACHING MEANS FROM SAID BASE INTO A FLAT SUPPORTING SURFACE SO THAT WHEN SAID STRONG BOX IS RECEIVED IN SAID ANCHORING MEANS THE ATTACHING MEANS ARE CONCEALED, A STOP LIMITING THE SLIDING MOVEMENT OF SAID TRAY WITH ITS SECURED FLANGES IN THE CHANNELS SO THAT SAID ONE WALL OF SAID TRAY OVERLAID BY THE FRONTAL LIP OF THE COVER IS ADJACENT THE ADMITTING END OF THE BASE, A STRON STIFF FLAP PIVOTED ALONG THE ADMITTING END OF THE BASE AND MEANS FOR LOCKING SAID FLAP TO SAID LIP, THEREBY LOCKING THE COVER IN CLOSED POSITION AND SECURING THE STRONGBOX TO THE ANCHORING MEANS.