Glass Rim

Richard Brekne Richard.Brekne@grieg.uib.no
Sun, 01 Dec 2002 21:30:21 +0100


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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