Apparatus for turning rotor for each desirable angle by driving force of capstan drive system

An apparatus for turning a rotary element, of a tape cartridge insertion and removal system, for each desirable angle by a capstan drive system which comprises:

• a lever turnable about a pivot bearing at one end thereof, the other end being free;
• an eccentric free travelling ring carried by said turnable lever at a point revoved from said pivot end thereof so as to be contactable and discontactable from a rotary shaft of said capstan drive system;
• a small gear connected to said free travelling ring;
• a rotary element drivingly engaged with said small gear for reducing the rotation thereof and being pivotally mounted on said pivot bearing of said turnable lever;
• lever means operatively associated with said rotary element at one end thereof and operatively engageable with said tape cartridge at the other end for permitting and forcefully ejecting said tape cartridge from a cartridge housing mounted on a tape deck, or for preventing the ejection of said cartridge from said housing, depending upon the rotary position of said rotary element;
• means for biasing said free travelling ring toward said rotary shaft of said capstan drive system;
• electromagnetic control means for interlocking the free end of said turnable lever so as to prevent contact of said free travelling ring with said rotary shaft of said capstan drive system;
• and
• means for actuating said electromagnetic control means for releasing the interlock of said free end of said turnable lever so as to permit contact of said free travelling ring with said rotary shaft of said capstan drive system.