[78-L] Glass versus Vinyl

[David Lennick]

On 1/6/2011 12:42 PM, Michael Biel wrote:
> On 1/6/2011 12:30 PM, David Lennick wrote:
>> What do we know about solid vinyl discs used for instantaneous cutting in the
>> 50s (and earlier?)? One radio station in Nova Scotia seems to have used them,
>> since a couple of Don Messer's recordings issued in an 80s compilation are
>> taken from them, and I was shown discs like this when I asked a small "record
>> your voice" outfit in a record store in Toronto in 1958.
>>
>> The CBC seems to have had to use glass discs before April 1941..maybe because
>> we were in the war that much earlier?
>>
>> dl
>>
>
> I should have mentioned that there were several types of coated
> glass-base discs used in Europe as early as 1933.  I believe the Simplat
> was glass.  It had to be baked after recording to harden the coating.
> The April 1941 date is what was announced by Presto at the NAB
> convention in March 41 as when they would commence shipping, and
> Audio-Devices was also mentioned as starting as well.
>
> Mike Biel   mbiel at mbiel.com

Just found a paper based disc I'm going to put on the CAPS auction table this 
Sunday, for fun.."Talk on V.D. by Dr. A. Groulx (French), recorded at CBC 
Ottawa, Dec. 9/43". Oughta raise some eyebrows.

dl