Black drum (7.5" diameter x 3.25") on shaft of 1/8 horse-power Ohio type 3956 motor, serial number 106,141. The drum scanner includes a coronal discharge lamp in the hub; quartz rods extend from the lamp cathode glow targets to miniature holes in the drum's surface. The picture is developed by the rotation of the drum and the radio controlled light of the lamp. Reference: "Radiomovies, Radiovision, Television" by Jenkins, page 66. Recorded (1932) as "Television Receiver employing a quartz-rod drum scanner, with a neon lamp located at the inside ends of the quartz rods."
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