Motor driven tape scanner and rewinder

Claim 1

IN A TAPE REWINDER HAVING A PAIR OF TAPE REELS EACH MOUNTED ON A ROTATABLE SHAFT ADAPTED TO BE INTERCHANGEABLY DRIVEN AND FREE WHEELING, INCLUDING A TAPE TRANSFERABLE BETWEEN THE REELS IN EITHER DIRECTION, THE IMPROVEMENT COMPRISING, A DRIVING SHAFT FOR EACH ROTATABLE SHAFT, A MOTOR DRIVING BOTH DRIVING SHAFTS, CLUTCHING MEANS ON EACH OF SAID SHAFTS SELECTIVELY OPERABLE TO ENGAGE THE ASSOCIATED ROTATABLE SHAFT, TENSION ARM ASSEMBLY ASSOCIATED WITH EACH REEL FOR GUIDING THE TAPE AND MAINTAINING TENSION THEREIN AND BRAKING MECHANISM ASSOCIATED WITH EACH ROTATABLE SHAFT, A SOLENOID FOR EACH BRAKING MECHANISM, SAID TENSION ARM ASSEMBLIES BEING MOVABLE AGAINST THE TENSION IN THE TAPE TO ENERGIZE ONE OF SAID SOLENOIDS TO BRAKE THE FREE WHEELING SHAFT BY ITS ASSOCIATED BRAKING MECHANISM, AND CONTROL MEANS FOR INTERNALLY BRAKING SAID DRIVE MOTOR AND SIMULTANEOUSLY CAUSING THE CLUTCHING MEANS TO ENGAGE BOTH ROTATABLE SHAFTS TO DYNAMICALLY BRAKE THE TAPE REWINDER.