Here is my Linear Tracker:
1917 Edison C250.
I have about 600 Diamond Disc recordings for this.
I restored it (cabinet and rebuilt the transport (gear driven) motor and all mechanicals some years ago.
Transport across the recording is based on the speed, regulated by the speed and is engaged with the vertical Edison reproducer.
That mechanism is not used for conventional lateral reproduction at 78 RPM
This plays at 80 RPM, and I have several lateral reproducers that I can play conventional 78's on. There is a speed adjustment
to slow it to 78 RPM for those and the lateral reproducers use the standard wooden or steel "needles" of the day.
The standard Diamond Disc uses the reproducer as shown, with the 1/4" thick Edison Diamond Discs.
I thought of this when I saw Laz's post about the little felt pads............seems Edison beat you to it
.
These C250's came out in 1915, and cost $250 a lot of money in 1915....about $5000 today.
Tracking weight of the diamond stylus is about 2 pounds !!!!! but the records hold up well, anti skating was not an issue
.
Fun stuff, I have rebuilt these, and many conventional Victrola style machines through the years.
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