Ivers & Pond grand

[James Grebe]

interspersed
I would have thought that someone else would have seen another I & P like
this and would know.

James Grebe
Piano-Forte Tuning & Repair
Artisan of Wood
WWW.JamesGrebe.com
1526 Raspberry Lane
Arnold, MO 63010
pianoman@accessus.net
----- Original Message ----- 
From: "Phillip Ford" <fordpiano@earthlink.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Saturday, July 10, 2004 12:23 PM
Subject: Re: Ivers & Pond grand


> >Yes, I would imagine it would put more pressure on the agraffes.
>
> The load on the agraffes is determined by the string tension and
> string angles at the agraffes.  I don't see why these should need to
> be different for this configuration, but perhaps they are.
>
> >   This piano
> >had a new block and strings since the late 70's.  and has always been at
> >A-440 since then even though the piano was built in 1901 in Boston.  Just
> >wondered what benefits there would be for this conjuration.  All else is
> >normal.
> >James Grebe
>
> Since I haven't seen this piano (or a photo) I can't say for sure,
> but I would imagine the angle of the block mimics the angle of the
> string coming off the back of the agraffe.  The strings could make a
> direct path from the agraffes to the tuning pins.  So, there wouldn't
> need to be an additional pressure point (friction point) as there is
> in a configuration where the block is parallel to the string plane.
> In theory this would make the piano easier to tune and would make it
> easier to equalize tension on the string (one less friction point).
> It also means that you don't have a front aliquot, which may or may
> not be a good thing, depending on your point of view.
>
> Phil Ford
>
> PS Some photos would be nice.
>
> >
> >>  Hi James,
> >>
> >>  I (and wife and daughter) was recently over at Cunningham piano and
> >>  Rich showed us an old (late 1800s) Steinway they had rebuilt. Its
> >>  pinblock and plate were slanted upward from the agraffes. He didn't
say
> >>  why they built it that way, but didn't mention it put extra pressure
on
> >  > the agraffes.
> >  > - John
> >>
> >  > > The pin portion of the plate slants back before the agraffes about
20%
> >  > > James Grebe
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