Tape recorder with cartridge selecting means

A tape recorder comprising

• a. storing means for storing a plurality of endless tape cartridges in stacked condition, each of said cartridges having an endless magnetic tape, a pinch roller, and a V-shaped notch formed on a side thereof;
• b. reproducing means including an elongated capstan shaft positioned near the pinch rollers of the cartridges, a plurality of magnetic heads, and an electrical circuit for controlling the play of the magnetic tape of the cartridge;
• and
• c. selecting means for selecting the desired cartridge, said selecting means including a plurality of pressure rollers, each of the pressure rollers being positioned in one of the V-shaped notches of the cartridges, an offset cam associated with each pressure roller and adapted to press the associated pressure roller thereby pressing the pinch roller of the cartridge toward the elongated capstan shaft, each cam being securely mounted on a common shaft, a first gear mounted on said common shaft, a second gear engaging said first gear for rotation therewith, a disc mounted on the second gear so that rotation of the disc in one direction is transmitted to the second gear, an elongated arm connected to the disc and extending therefrom, a solenoid below the arm for lowering the arm, a pulley mounted on the capstan shaft and having a pin engageable with the arm when the arm is dropped by the solenoid, the arm and the disc being rotated in said one direction by the pulley when the pin engages the arm, and an electric control circuit for electrically selecting the action of the desired cam by energizing the solenoid thereby playing the desired cartridge, each of said pressure rollers being supported by an elastic rod at a free end thereof, said cams being adapted to individually press the elastic rod thereby pressing the pressure rollers.