SoundScriber

Used Google translator

     SoundScriber. Made in the USA.     This device probably can be named a phonograph as record is made by a method mechanical нарезания flutes on a flexible plastic disk. This is one of the oldest pieces of my collection. Whole series of modifications, including in other buildings. Likely start production in 1945. Dimensions 300 x 260 x 205 mm. Weight about 9 kg. Power supply 110 - 120 v.
     In a good and beautiful wooden building with a steel chassis on which are mounted, the whole mechanics and an electrician. AC motor at 115 v has its own gear, and coupled with the second gear through a flexible coupling, apparently to reduce vibration. The second gear attached to the chassis under the disc, rotates it, and transmits the traffic through a long shaft to a mechanism for moving the tonearm record. Both tonearm made sufficiently technologically. Arm must be lifted playback is provided with a massive counterweight and the mechanism of compensation the rolling force. The head of the tonearm record rises and falls with the switch located on the front panel. Both tonearm consist of two parts, connected by flexible inserts. In tonearm reproduction Box leather needed to reduce the effects of vibration on the engine head. In tonearm record insertion from a flat spring that presses the head with a needle to the disc in the recording mode. Wires from the heads are connected to the further electrically through connectors built into the chassis next to the tonearm. For the convenience of finding the right place record, there are special lines, marked in minutes, from 0 to 15. Circuit rather complicated, collected on five radio tubes. On the chassis right next to the disk are tumblers power of radio tubes and the engine. On the left is the controller sensitivity microphone. The volume knob is on top of the enclosure. On the front panel, next to the selector switch, there is a lamp indicating the recording level. The brightness of its luminescence is proportional to the level of the input signal. Also on the front panel is a decorative hole dynamics. The rear panel includes connectors for the power cord, microphone, headphones and foot pedal control. To burn CDs using a flexible green plastic diameter of 5 and 7 inches. At 7-inch disk can do 15 minutes of recording time at a rate of 33 rpm.
     The unit has been to me in working order. Repair I started with the dismantling and study design. Quickly discovered the first serious defect, was on the precipice coil pickup. Pickup is in the form of a permanent magnet between the poles of which is movable coil (35 ohms) with an iron core, mechanically connected to the holder of the needle. I'm lucky break was the beginning of the winding, and it was restored. The recording head was working, it has a resistance of 1 ohm. Mechanics also revealed serious problems. The engine was rotated, but issued threatening sounds, and the flexible coupling was broken. Flexible couplings allow two inserts from strong thick cloth, one of which was torn. After the bulkheads and lubricating the engine with gearbox and clutch repairs, mechanics fully earned. A trial run showed that significant noise and vibration from the engine there, and needle recording head cuts qualitative groove. Needle bloom, like corrosion, but the cutting tip is clean. He made, probably from a corundum. Remove corrosion, I did not, because fear damage to the tip.
     Wiring was also defective, filament voltage was absent. As it turned out later, the filament of tubes connected in series. Three lamps (one 35Z5, and two 35L6) have a filament voltage - 35 v. and two (12SC7) - v. 12 In sum, we obtain 129 v, which can be used to heating mains voltage 110 - 120 v. Of course this is not a perfect solution, but it allowed the designers to get rid of the transformer. Termination of the filament was at one of the radio tubes 12SC7. Russian analog 12N10S I have not found, and ordered the original in America. After replacing the radio tubes, and all six of electrolytes, the device has earned, but conditionally. Recording and playback appeared, but the sound was weak. We had to buy the remaining radio tubes, and replacing them has given a result, the sound was very loud. Plays apparatus normally, and if you listen to conventional phonograph record factory made, the sound is excellent. However, when recording to get the same quality of sound does not work. The voice is very clearly written, and the music sounds like when played on an old gramophone, just loud. Perhaps this is due to worn out recording needle. I suppose that to achieve the best result I can not do. It should be noted that the speed of rotation of the disk turns a little less than it should be. This is due to the fact that the motor speed depends on the frequency of the mains voltage. In the United States - 60 Hz, and in Russia - 50 Hz. 

A video about Soundscriber recorders, including this 1945 model

On the enlarged photo can be seen the groove and a cutting tip of the needle. Photos can be enlarged

     The device has been bought in the complete set with two packs of disks of 5 both 7 inches, and a pack of original envelopes for 7 inch disks.

Sound pickup in the disassembled kind.

Engine with gearbox, clutch, and the second gear assembly

In the photo on the left of a broken clutch. In the photo on the right see the shaft connecting the second gear mechanism to move the tonearm records

Reducer motor

The device has come without a needle of a sound pickup, and I have tested two variants. In the photo on the left uses an ordinary sewing needle. In the photo on the right needle from the modern player. With two needles, the device works, and much of a difference I noticed.

Leaflet SoundScriber, found on the Internet