Tape recording and reproducing apparatus

Claim 1

SOUND RECORDING AND REPRODUCING APPARATUS OF THE KIND UTILIZING A MAGNETIC TAPE MOVABLE IN BOTH DIRECTIONS BETWEEN TWO ROTATABLE SPOOLS, SAID APPARATUS COMPRISING A DRIVING MOTOR INCLUDING A DRIVING SPINDLE, A FIRST FRICTION PULLEY MOUNTED ON SAID DRIVING SPINDLE, A SECOND AND REVERSING FRICTION PULLEY DRIVEN BY SAID FIRST FRICTION PULLEY, TWO ROTATABLE SPOOL CARRIERS MOUNTED ONE AT EACH SIDE OF THE PULLEY ASSEMBLY COMPRISING SAID FIRST FRICTION PULLEY AND SAID SECOND AND REVERSING FRICTION PULLEY AND ROTATABLE TOGETHER IN THE SAME DIRECTION BOTH CLOCKWISE AND COUNTERCLOCKWISE, TWO MOVABLE BEARING MEMBERS EACH CARRYING ONE OF SAID SPOOL CARRIERS FOR MOVEMENT IN THEIR OWN PLANES OF ROTATION TOWARDS AND AWAY FROM THE SAID PULLEY ASSEMBLY, A LONGITUDINALLY MOVABLE HAND-OPERATED CONTROL BAR HAVING A PIN-AND-SLOT CONNECTION WITH EACH OF SAID BEARING MEMBERS, SPRING MEANS BIASING SAID TWO BEARING MEMBERS AND THE SAID SPOOL CARRIERS CARRIED THEREBY TOWARDS ONE ANOTHER AND TOWARDS THE SAID PULLEY ASSEMBLY BETWEEN SAID SPOOL CARRIERS, THE ARRANGEMENT BEING SUCH THAT THE SPOOL CARRIERS ARE MOVED SIMULTANEOUSLY AND IN THE SAME DIRECTION BY MOVEMENTS OF THE CONTROL BAR BETWEEN TWO TERMINAL POSITIONS IN WHICH ONE OF THE SAID SPOOL CARRIERS IS HELD BY SAID SPRING BIASING MEANS IN YIELDING DRIVING PRESSURE ENAGAGEMENT WITH ONE OF THE PULLEYS OF THE SAID PULLEY ASSEMBLY AND THE OTHER SPOOL CARRIER IS HELD BY THE CONTROL BAR IN OPPOSITION TO SAID SPRING BIASING MEANS AWAY FROM DRIVING ENGAGEMENT WITH THE OTHER PULLEY OF SAID PULLEY ASSEMBLY AND AN INTERMEDIATE POSITION IN WHICH BOTH SAID SPOOL CARRIERS ARE HELD IN OPPOSITION TO SAID SPRING BIASING MEANS OUT OF DRIVING CONTACT WITH EITHER OF THE PULLEYS OF SAID PULLEY ASSEMBLY.