[pianotech] Key leveling

[Horace Greeley]

Hi, David,

At 08:39 AM 11/28/2011, you wrote:
>Hi Jack Et al,
>
>Have you or anyone else seen the key levelling system that utilizes 
>a long screw that goes down through the key button/key onto the back 
>of the balance rail punching?  Turning the screw in or out makes the 
>key go up or down.  I'd love to get a photograph of this for a class 
>I'm developing: "Off Center Balance Rail Bearings" for PTG Institute 
>2012 at Bellevue:

There are actually at least two patents around this kind of system; 
one from the late-19th/early-20th Cent, and one much more recent.  I 
won't have access to those data until later next week, but will be 
happy to look them up as soon as I have time.

Kind regards.

Horace



>Regards,
>
>David Stanwood
>
>>Hello to All,
>
>>     This leveling  system was produced by J.  French just
>>before P. A. Starch bought them in the late 50s. When
>>Starck was bought by J. P.Seeburg. in the mid 60s was
>>when this system went into production.
>
>>   It was indeed  presented  as the best leveling device
>>ever, by the  " Seeburg "  brochure.
>
>>   Its  weakness was that after you leveled  the key you
>>then you often had to adjust the  standard  capstan..
>
>>    At first I really liked the idea.  Then  actually using them
>>  was not so good.
>
>>    Of course the very best " leveling device" ever,
>>was in the  " Bowen Henderson" grand of Boston.
>>It was a dream  to work with.
>
>>    Regards,
>>   Jack Wyatt
>>   Dallas, Chapter