[78-L] Pressed in WHAT material...

[Martha]

Victrolac - apparently a compound of shellac, filler, and a plastic material 
derived from shredded Longleaf Yellow Pine (Southern Pine)  stumps

http://tinyurl.com/ybvqpdy



----- Original Message ----- 
From: "Dan Van Landingham" <danvanlandingham at yahoo.com>
To: "78-L Mail List" <78-l at klickitat.78online.com>
Sent: Wednesday, November 18, 2009 10:03 PM
Subject: Re: [78-L] Pressed in WHAT material...


On the subject of recording material:can anyone shed some light for me on a 
substance
called "Vitrolac".I have some circa 1933 long playing 10 inch recordings.RCA 
called them
Electrical Transcriptions.I once saw some ETs in an antique store in 
Winston,Oregon;what
I saw was one that was a disc that was by a symphony orchestra recording 
under the aus-
pices of either the Civilian Conservation Corps or the Works Progress 
Administration.Also,
in a book I had read on the history of Atlantic Records,by Charles Green,the 
Phillipsburg,
New Jersey based National Records(owned by one Al Green)got into the record 
business
by furnishing discs that were made out of some conglomeration by a National 
employee
to other companies-until Green decided to cash in on the AFM recording ban 
by agreeing
to the AFM's terms of recording royalties.He lasted until about 1951 but had 
a rather imp-
ressive roster which included Big Joe Turner,Pete Johnson,Billy Eckstine and 
Eileen Bar-
ton who had a hit recording of If I Knew You Were Coming(I'd Have Baked a 
Cake).Nation-
al's first A&R man was Herb Abramson who helped Ahmet Ertugen start Atlantic 
in 1947.




From: Kristjan Saag <saag at telia.com>
Subject: Re: [78-L] Pressed in WHAT material...
To: "78-L Mail List" <78-l at klickitat.78online.com>
Date: Monday, November 16, 2009, 2:37 PM


Michael Biel wrote:

> I do want to add that Berliner used celluloid for his discs in the early
> 1890s before shellac -- possibly by 1889 but definitely in 1892 thru 94.
> There should be some additional research done on whether Berliner
> really used hard rubber at all. I tend to think that some might have
> mistaken the celluloid pressings for hard rubber because hard rubber is
> mentioned in passing in a Berliner letter (I think). I seem to think
> that he might have experimented in having pressings made but found them
> lacking.
---
The additional research has been done and it surprises me that Mike Biel
doesn't know, or want to know about it. It was presented by Stephan Puille
at the 2004 German IASA meeting and is based on FTIR (Fourier transform
spectroscopy) analyses. It clearly shows that Berliner used celluloid for
the first pressings at The Rheinische Gummi- und Celluloidfabrik
Neckarau-Mannheim (no commercial pressings whatsoever before the end of
1890), but after a few month changed to hard rubber, which was used for all
succeeding German pressings.
This has also been said a few times on this list, and I'm seriously
beginning to doubt whether our collective efforts would do much better than
Wikipedia, whose contributors, at least, seem to read each other postings.
See
http://docs.google.com/gview?a=v&q=cache:GszaHTLD7j4J:www.iasa-online.de/files/2003_Berliner.pdf+%22puille%22+berliner+celluloid&hl=en&gl=se&sig=AFQjCNH-6_XvNXYDJlQBUQ9_As32O0Jqlw
and
http://www.iasa-online.de/bericht_2004.html

Kristjan

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