Brake member for a tape cartridge

Claim 1

IN A MAGNETIC TAPE RECORD CARTRIDGE OF THE TYPE HAVING A CASING WITH A PAIR OF OPPOSING WALLS AND A SPOOL MOUNTED THEREIN FOR ROTATION ABOUT AN AXIS WHICH IS TRANSVERSE TO SAID OPPOSING WALLS AND INCLUDING A ROLL OF MAGNETIC TAPE WOUND ON SAID SPOOL, THE COMBINATION COMPRISING: A LINER OF THIN FLEXIBLE MATERIAL DISPOSED BETWEEN AN EDGE OF SAID ROLL OF MAGNETIC TAPE AND THE ADJACENT WALL OF SAID CASING TO FACILITATE TAPE REELING, AND A RELATIVELY FLAT BRAKE MEMBER MOVABLY MOUNTED IN SAID CASING BETWEEN SAID LINER AND SAID ADJACENT WALL AND MOVABLE IN A PLANE PARALLEL TO SAID LINEAR BETWEEN A FIRST POSITION ENGAGING SAID SPOOL TO PROVIDE BRAKING ACTION TO PREVENT ROTATION OF SAID SPOOL AND A SECOND POSITION SPACED FROM SAID SPOOL TO PERMIT TAPE REELING, SAID LINER UNDERSIRABLY TENDING TO ADHERE TO SAID BRAKE MEMBER AND TO BUCKLE IN RESPONSE TO MOVEMENT OF SAID BRAKE MEMBER FROM SAID FIRST POSITION TO SAID SECOND POSITION THEREBY CAUSING SAID LINER TO INTERFERE WITH TAP REELING, SAID BRAKE MEMBER HAVING MEANS ON A SURFACE THEREOF FACING SAID LINE PROVIDING A PLURALITY OF VOIDS BETWEEN SAID LINER AND SAID BRAKE MEMBER TO MINIMIZE THE AREA OF CONTACT BETWEEN SAID BRAKE MEMBER AND SAID LINER TO THEREBY REDUCE THE ADHERENCE BETWEEN SAID LINER AND SAID BRKE MEMBER TO PREVENT BUCKLING OF SAID LINER IN RESPONSE TO MOVEMENT OF SAID BRAKE MEMBER FROM SAID FIRST POSITION TO SAID SECOND POSITION.