Meter receptacle with movable meter support and surge protector

Claim 1

IN A RECEPTACLE FOR AN ELECTRICAL INSTRUMENT OF THE TYPE HAVING A CIRCULAR BASE SURMOUNTED ON ONE FACE BY AN INSTRUMENT ENCLOSURE, THE BASE HAVING ON ITS EXPOSED FACE AXIALLY PROJECTING CONTACT BLADES, THE COMBINATION OF AN OPEN FRONT BOX HAVING A BACK WALL AND SIDE WALLS AND IN WHICH SAID BASE CAN BE POSITIONED, INSULATION BLOCKS MOUNTED ON THE BACK WALL OF THE BOX, JAW TERMINALS MOUNTED UPON SAID INSULATION BLOCKS, A PAIR OF ELECTRICALLY CONDUCTIVE BASE CONTACTING MEMBERS RESPECTIVELY SUPPORTED FROM OPPOSITE SIDE WALLS OF THE BOX, EACH SAID CONTACTING MEMBER INCLUDING AN ARM PORTION PIVOTALLY CONNECTED AT ONE END WITH A SIDE WALL AT A LOCATION SPACED FROM THE OUTER EDGE OF THE BOX AND NORMALLY EXTENDING INWARDLY AWAY FROM SAID WALL AND A BASE CONTACTING PORTION EXTENDING FROM SAID ARM OUTWARDLY TOWARD THE FRONT OF SAID BOX AND ADAPTED TO CONTACT A PORTION OF SAID BASE WHEN THE INSTRUMENT IS INSERTED IN SAID BOX, EACH ARM PORTION INCLUDING STOP MEANS COOPERATING WITH SAID ARM TO PREVENT PIVOTAL MOTION OF SAID ARM INWARDLY IN SAID BOX PAST SAID NORMAL POSITION, EACH ARM BEING CAPABLE OF PIVOTAL MOVEMENT OUTWARDLY OF THE BOX FROM SAID NORMAL POSITION WHEREBY TO SWING SAID BASE CONTACTING PORTIONS IN A DIRECTION AWAY FROM THE CENTER OF THE BOX TOWARD SAID SIDE WALLS WHEN SAID INSTRUMENT IS REMOVED.