Electronic typewriter

An electronic typewriter comprising:

• a device for a first function having a motion drive for the first function;
• a device for a second function having a motion drive for the second function;
• a single motor member for the two motion drives;
• a shift member displaceable in a shift direction between a position for the first function and a position for the second function to impart the single motor member's motion to the motion drive for the first function and to the motion drive for the second function, respectively;
• a shift electromagnet and an electronic unit for control of said electromagnet;
• an intermediate member supported by the shift member to be movable in a selection direction having a component perpendicular to the shift direction and a thrust member actuated by said shift member and capable of providing a thrust action in said shift direction, and in which:
• said intermediate member is connected to said electromagnet to be displaced in the selection direction from a disengagement position to an engagement position in which it cooperates with said thrust member;
• said intermediate member is capable of being displaced together with said shift member in the shift direction by means of the thrust member;
• means are provided for holding the shift member in position selectively in said position for the first function and in said position for the second function in the disengaged position of the intermediate member;
• and
• said electronic unit controls said motor member to actuate displacement of the shift member from one of the positions for the first function and for the second function to the other.

An electronic typewriter comprising an electric motor having a driveshaft which is rotatable in both directions, a first function device, a second function device, a shift member displaceable from one of two operative positions to the other for connecting the first or the second function device to the driveshaft, a shift electromagnet for control of said shift member, and an electronic control means for controlling the electric motor and the shift electromagnet, the improvement comprising:

• a servomechanism for displacing the shift member between the two operative positions and activatable to be motorized by said driveshaft;
• an actuating element operated by the shift electromagnet to actuate said servomechanism;
• and
• positioning means for holding said shift member in each of the two operative positions and wherein the electronic control means selectively controls said motor to displace the shift member from one of said operative positions to the other by means of said servomechanism.