Sohmer Agraffe Bridges - Photos wanted! - was Re: what is downbearing?

[David Skolnik]

---------------------- multipart/alternative attachment
JimB-

There always be a chance you be right, but I don't think this is that 
time!!  Does  anyone have a good picture of an agraffe bridge that could be 
posted to resolve this, soon to turn violent, debate?  Lacking such a 
photo, anyone with a relevant model in front of them who would venture an 
opinion?  As I am remembering, the net effect of this config was to put a 
major ripple in the soundboard under the bridge.  The truth aside, what was 
the thinking behind this anyway, and, if it worked, why did they stop?

David Skolnik


At 09:09 PM 2/20/2004 -0500, Jim Bryant wrote:

>  >  Than there are the bridge agraffe thingees, like Ed's little Sohmer
>  > grand which actually have 'upbearing'
>  >in a portion of the scale and 'downbearing' in another portion of the
>scale(JB)
>
>  Not quite.  As Ed Foote described it: (DAVID)
>
>  Yes "quite" without regard to how Ed described it. Any downbearing on the
>back of the agraffed bridge is a function of the upbearing on the agraffe and
>not downbearing as we know and use the term. Ever seen a busted agraffe 
>down by
>the tuning web...Those little suckers just pop right on up there don't they?
>Wellllllll that is what also happens on an agraffed bridge when one of them
>break.
>Could it do that if in fact there were any true downbearing present?



>  Should the bridge crack and seperate from the ribs the upbearing will
>'raise' the entire bridge/sounding board in that area. Could it do that if 
>in fact
>there were any true downbearing present?




>
>  >  This piano has agraffes on most of the treble bridge, set in a cut-out
>  >notch in the front half of the bridge, which allows the strings to pass
>  >through
>  >the agraffe and also bear on the bridge itself.
>
>  <<Thus, the upward pressure at the agraffe, in front, is countered by the
>  down pressure at the rear of the bridge.>>
>Nope, I don't believe so, read the above......
>
>Jim Bryant (FL)

---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/5e/12/81/25/attachment.htm

---------------------- multipart/alternative attachment--