keyboard levelling

[Tom Driscoll]

----- Original Message -----
From: "Tom Driscoll" <tomtuner@comcast.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, November 26, 2004 12:09 PM
Subject: Re: keyboard levelling


>
> Subject: Re: keyboard levelling
>
>
> > Hi List,
> > This question is obvious to me, but I don't know the history of
innovation
> in
> > piano design.
> > Has anybody tried a balance rail pin which screws in and out of the
> balance
> > rail, with micro-thread like tuning pins, to adjust it's height.
> > A flange at the bottom on which sits one felt punching and then the key,
> > which goes up and down when adjusted from the top. Has to be quicker,
> easier
> > and more accurate.
> > Bruce Browning-The Piano Tuner.
> >
> Bruce,
>     Sounds very compelling. I remember an idea from many years past
> concerning an adjustable key leveling system.I think it was from Alfred H.
> Howe and detailed in his book on piano technology.
>     Playing devils advocate here ,when you bend the balance rail pin to
> square the keys ,if the pin is not perfectly  plumb it would rotate in an
> elliptical fashion when adjusted throwing off the squaring .
>     This is not to discourage what seems like an interesting concept,just
a
> factor to consider   Need investors?
>     Tom Driscoll RPT

    http://pages.tias.com/187/PictPage/1921942622.html#images

Above link to a book seller advertising Mr. Howes book. Sample page has an
illustration (somewhat hard to see) of Mr. Howes key leveling idea.
    T.D.
>
>