Binder for perforated leaves

Claim 1

A BINDER COMPRISING A PAIR OF COVERS, EACH COVER HAVING AT LEAST TWO PERFORATIONS ADJACENT ONE EDGE OF SAID COVER TO REGISTER WITH PERFORATIONS OF VARIABLE NUMBERS OF LEAVES BETWEEN THE COVERS, AND AT LEAST TWO ELONGATED BANDS CONSTITUTING A HINGE WHICH IS THE SOLE CONNECTION BETWEEN THE COVERS, EACH BAND BEING RIGIDLY ATTACHED TO ONE COVER ADJACENT THE PERFORATED EDGE, EACH BAND DEFINING A LOOP EXTENDING FROM THE POINT OF ATTACHMENT OF THE BAND TO SAID COVER OUTWARD FROM SAID COVER, THENCE PASSING INWARD THROUGH ONE OF THE PERFORATIONS OF THE SECOND COVER TO EXTEND THROUGH PERFORATIONS OF LEAVES, THENCE PASSING OUTWARD THROUGH A PERFORATION OF THE FIRST COVER PAST THE POINT OF ATTACHMENT OF THE BAND TO SAID FIRST COVER, THENCE PASSING INWARD THROUGH THE PERFORATION OF THE SECOND WHICH WAS PREVIOUSLY PASSED THROUGH, AND THENCE PASSING THROUGH A RELEASABLE CLASP ATTACHED TO THE INSIDE OF SAID SECOND COVER THROUGH WHICH SAID BAND IS STIFFY SLIDABLE IN THE DIRECTION OF ITS LENGTH TO ALLOW INFINITE ADJUSTMENT OF THE LOOP DIAMETER WITHIN THE LIMITS OF THE LENGTH OF THE BAND, THE BAND BEING SUFFICIENTLY FLEXIBLE THAT THE COVERS CAN LIE PARALLEL TO EACH OTHER AT DIFFERENT DISTANCES APART WHEN CLOSED AGAINST DIFFERENT NUMBERS OF LEAVES AND CAN SWING AWAY FROM EACH OTHER ABOUT THE HINGE, THE BANDS BEING CAPABLE OF REPEATED FLEXING WITHOUT BREAKING BUT THE BANDS BEING ALSO SUFFICIENTLY STIFF AND RESILIENT THAT THE LOOPS EXPAND AS THE COVERS SWING AWAY FROM EACH OTHER, AND SAID BANDS HAVING SMOOTH LOOP SURFACES TO PASS FREELY THROUGH THE PERFORATIONS OF THE COVERS AND OF THE LEAVES.