[78-L] cylinder info, color.

[Thomas Edison]

One customer of mine that over the years has used over 300 of my blanks,
 for

saving voices of those who are the last to speak certain dialects, and to
 tell

stories, and turn the Phonograph into characters. This is a video 
explaining his

various projects, Pablo Helguera. There were very little blanks of 
regular white

or brown, most were pink, green blue red ect. 

http://www.smac.us/2010/04/25/pablo-helguera/





This is something about brown wax blanks you might find interesting, 
that Jonas

Aylsworth said.





Aylsworth looking at blanks in a court case from page 30 and 31. "Yes, I
 can

identify these as being made prior to 1893, because of the manor of 
making the

blanks, as seen in 4, 5, and 6 especially, must be very old because when
 cut

into it is seen that there is a change of color, the outside being a 
salmon

color and the small portion of the interior, or middle is the original 
color of

the cylinder. This change in color, I am familiar with and know the 
cause to be

the gradual absorption of oxygen, which causes the stearate of iron 
which the

record contains as an impurity derived from the iron kettles, to change 
to the

ferric or higher oxidation stage, which produces a brownish or salmon 
color. It

would take years for the action to penetrate the depth which it has in 
these two

records. I observe that since the records were cut to take samples for 
analysis

early in January up to this time, there has been no perceptible change 
in the

lighter interior portion; the age of a composition of this kind could be
 fairly

accurately determined by the depth of discoloration. These records are 
the same

composition and were manufactured previous to 1893 by the Edison 
Manufacturing

Company and Edison Phonograph Works. And which were molded into records 
and

blanks and sold commercially
 		 	   		  
_________________________________________________________________
The New Busy is not the old busy. Search, chat and e-mail from your inbox.
http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3