Phonograph turntable control system

An automatic turntable control system for operating an electrical arm lifter that raises and lowers a play arm upwardly and downwardly, for further operating an electric arm rotator that pivots the play are inwardly and outwardly about the fixed point, and for still further operating an electric motor to turn it on and off, whereby such operation can be coordinated in accordance with user instructions entered into the system by depression of electrical pushbutton switches and further in accordance with rotational position of the play arm, comprising:

• an arm sensor cooperating with the play arm generating an arm position signal which represents rotational position of the play arm;
• a user-activated pushbutton-type on-off switch for turning the turntable on and off and causing the arm lifter, the arm rotator and the motor to be appropriately operated after the on-off switch is activated;
• a user-activated pushbutton-type switch, the arm switch cooperating with the arm lifter to raise and lower the arm when the turntable is turned on in accordance with operation of the switch;
• and an electrical control network cooperating with the arm sensor, the arm lifter, the arm rotator, the motor, the on-off switch and the switch to cause the play arm to be appropriately lifted, lowered and rotated and to further cause the motor to be turned on and off in order to cause a record to be played automatically and in order to further cause the play arm to be raised and lowered during record play by activation of the cue switch.