[pianotech] Key leveling

[Tom Driscoll]

David,
    Here is a link to the key leveling system patented  by the  late -great 
Alfred H Howe.
 I'm not sure if there are examples of this in existance.

Tom Driscoll
http://www.freepatentsonline.com/2509063.pdf



----- Original Message ----- 
From: "David Stanwood" <stanwood at tiac.net>
To: <pianotech at ptg.org>
Sent: Monday, November 28, 2011 11:39 AM
Subject: Re: [pianotech] Key leveling


> 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:
>
> 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
>