Glass Rim

[Farrell]

Is this from the glass soundboard people?

Terry Farrell
  
----- Original Message ----- 
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "PTG" <pianotech@ptg.org>
Sent: Sunday, December 01, 2002 3:30 PM
Subject: Glass Rim


> 
> Ok, so heres a new one on me...
> 
> Patented in 1860's or there abouts... a soundboard is glued
> only to the back part the rim... about 10 inches long space.
> The rest ot the edge of the soundboard "floats" on a glass
> shelve which is placed on the rim. I think there is also
> glass on the end grain of the panel, and glass on top, and
> the whole thing is held in place by a piece of moulding
> pressed and glued to the inner rim.
> 
> The idea is supposedly to totally isolate the soundboard as
> a vibrating system from the rest of the piano. The glass was
> supposed to simply reflect everything back into the panel.
> 
> Any comments ?
> 
> 
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
> 
> 
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