Drive mechanism including a one-way spring clutch for a typewriter

A drive mechanism for a typewriter having a member to be cyclically driven in one direction, comprising:

• a first rotatable element;
• a second rotatable element having a common axis of rotation with said first element and operatively coupled to said member;
• an electric motor coupled to said first element and selectively energizable to rotate said first element in one direction for a cycle of operation of said member;
• a clutch spring in continuous frictional engagement with said first and second elements such that said clutch spring only imparts rotation of said first element in said one direction relative to said second element and rotation of said second element in the opposite direction relative to said first element;
• holding means having a first position in which said holding means positively holds said second element to a particular angular position about said axis and a second position in which said holding means releases said second element;
• and
• control means operable prior to and including initiation of energization of said motor to bring said holding means from said first to said second position and operable prior to and including completion of a cycle of rotation of said first element as well as said second element in said one direction to bring said holding means from said second to said first position to cause said second element as well as said first element to be positively held to a next particular angular position upon completion of the cycle of said rotation.