Hi Allen,A Ford 1 wrote:Hi,
I agree this was probably not made but they were looking at the possibility. It is possible a proof of concept experimental device was produced. the experimental device of course would probably not have looked exactly like the drawing depicts.
All the best to you Fran and all others that are interested,
Allen
I dredged up this very interesting old post from Greg Bogantz, and it is a bit illuminating in regard to the Eaton Patent, unless I'm mistaken.
This is the body of text included in his post (which can be read in its entirety via the link beneath it):
http://forum.talkingmachine.info/viewto ... 1012#p1012gregbogantz wrote:I own a C-2 and C-4 and I have heard a C-1. As Valecnik stated, the C-1 and C-2 are the only models that were designed to play both vertical DDs (not recommended for Pathé Sapphire records due to the small stylus size) and lateral needle cut records.
The phono pickup uses a unique stylus bar that holds the typical Edison diamond point for DD playback. And there is also a needle chuck with set screw that holds a steel needle for lateral record playback.
The sound is typical of 1928 model radios and electric phonos. With the exception that the C-1 and C-2 also included a "scratch filter" circuit which cannot be switched out (without an internal wiring change) when playing records. Edison propaganda stated that this was included to clean up the noise from lateral records, but the DDs actually sound noisier than laterals of the period due to the inherently lower signal to noise (S/N) ratio of the DDs. Consequently, the C-2 has a tubby and boomy sound with poor treble when playing records compared with, say, a Victor RE-45 or RE-75 from 1929. I, too, recommend using modern playback equipment for getting the full sound out of electrically recorded DDs and laterals. And such equipment will inflict very little damage to your records. But if you want the authentic sound of playing an electric Edison DD on period equipment, your only choice is an Edison C-1 or C-2. No other consumer electronic record players were sold in the USA that play vertical recordings (maybe there were some european models I'm not aware of). There was some professional equipment sold for vertical record playback in this period, notably from Western Electric. But the WE records were made with a different groove shape and size from that used in the DDs, so the WE vertical pickups probably won't work well with the Edison DDs.
Best,
Fran