Information storage position control apparatus

Rotating disc memory apparatus comprising:

• means for rotating the disc;
• a carriage adapted for bi-directional radial movement with respect to the disc, said carriage including a transducing unit positioned thereon;
• rail means for supporting said carriage for constrained bi-directional radial movement;
• rotatable track position wheel means for controlling the position of said carriage;
• support means for the disc;
• belt means secured to said wheel means and said carriage for linearly shifting said carriage in response to rotary movement of said wheel means;
• first and second solenoid means for controlling the movement of said carriage;
• first and second lever means pivotally mounted on said support means, each having mounted thereon a means for driving said wheel means in one of two directions of rotation, and each also including means coacting with one of said solenoid means for coupling the respective drive means with said wheel means to cause said wheel means to be driven in a selected direction;
• fulcrum means mounted on said support means for said first and second lever means;
• means coupling the disc rotating means with the two drive means for driving one of said drive means in a first direction and the other drive means in a second direction;
• a plurality of position indicating means on the wheel means;
• detector means positioned to detect said indicating means to provide information concerning the position and movement of the wheel means;
• and
• control means capable of selectively energizing one or the other of said solenoid means to cause one of the drive means to be coupled to the wheel means for imparting movement thereto of a selected amount and direction, said detector means coupled to said control means to provide information concerning the extent of movement of said wheel means.

Rotating disc memory apparatus comprising:

• an information storage disc;
• means for rotating said disc;
• support means for the rotating means;
• a data transducing head cooperating with the disc;
• a carriage adapted for bi-directional radial movement with respect to the disc, said carriage having said transducing head positioned thereon;
• rail means for supporting said carriage for constrained bi-directional radial movement;
• rotatable track position wheel means for controlling the position of said carriage;
• belt means secured to said wheel means and said carriage for linearly shifting said carriage in response to rotary movement of said wheel means;
• first and second solenoid means for controlling the movement of said carriage;
• first and second lever means pivotally mounted on said support means, each having mounted thereon a means for driving said wheel means in one of two directions of rotation, and each also including means coacting with one of said solenoid means for coupling the respective drive means with said wheel means to cause said wheel means to be driven in a selected direction;
• fulcrum means mounted on said support means for said first and second lever means;
• means coupling the disc rotating means with the two drive means for driving one of said drive means in a first direction and the other drive means in a second direction;
• a plurality of position indicating means on the wheel means;
• detector means positioned to detect said indicating means to provide information concerning the position and movement of the wheel means;
• and
• control means capable of selectively energizing one or the other of said solenoid means to cause one of the drive means to be coupled to the wheel means for imparting movement thereto of a selected amount and direction, said detector means coupled to said control means to provide information concerning the extent of movement of said wheel means.

Rotating disc memory apparatus comprising:

• an information storage disc;
• means for rotating said disc;
• a data transducing head cooperating with the disc;
• a carriage adapted for bi-directional radial movement with respect to the disc, said carriage having said transducing head positioned thereon;
• a rotary carriage driving element;
• coupling means coupling the rotary carriage driving element to the carriage and converting the rotary movement of the rotary element to linear movement of the carriage;
• first and second drive means selectively engageable with said rotary element to drive it in a first or second direction of rotation;
• means for causing said first and second drive means to be driven by the disc rotating means;
• and
• selecting means for selecting one or the other of said driving means and engaging the selected means with the rotary element to drive said rotary element in the selected direction, and thereby drive the carriage in a selected direction.

Rotating disc memory apparatus comprising:

• an information storage disc;
• means for rotating said disc;
• a data transducing head cooperating with the disc;
• a carriage adapted for bi-directional radial movement with respect to the disc, said carriage having said transducing head positioned thereon;
• a rotary carriage driving element;
• coupling means coupling the rotary carriage driving element to the carriage and converting the rotary movement of the rotary element to linear movement of the carriage;
• first and second drive means selectively engageable with said rotary element to drive it in a first or second direction of rotation;
• means for causing said first and second drive means to be driven by the disc rotating means;
• selecting means for selecting one or the other of said drive means and engaging the selected means with the rotary element to drive said rotary element in the selected direction, and thereby drive the carriage in a selected direction;
• and
• control means capable of operating one of said selecting means to cause one of the drive means to be coupled to the rotary carriage driving element for imparting movement thereto of a selected amount and direction.