keyboard levelling

[Tom Driscoll]

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 --Just had a turkey sandwich--Driscoll RPT