Key levelling device

[John Ross]

I seem to recollect the screw adjustment being from below the keybed. It was 
a long time ago, and I only saw it once.
He had some good ideas, unfortunately, the parts were Mickey Mouse. They 
looked like make do on a trial piano, and the parts had never been refined 
for production.
Action tapes were a piece of string, and a daube of melted glue stick. The 
parts looked like they were stamped out of aluminums, and then had a few 
bends put in them. Truly horrible.
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
----- Original Message ----- 
From: "Phillip Ford" <fordpiano@earthlink.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Saturday, December 18, 2004 12:21 PM
Subject: RE: Key levelling device


> Kerry,
>
> I have some pictures of this action around some place, although I can't 
> seem to lay my hands on them at the moment?  Was the key leveling screw 
> accessible with the action installed?  That's the beauty of Mr Perry's 
> device.  By the way, what are APTTA and PTTGQ?
>
> Phil  Ford
>
>>The Lindner piano made in Ireland (from a Rippen design) had the key
>>levelling done by a screw on to the backtouch. It had a separate screw
>>adjustment for the lost motion, this was very effective even if the piano
>>was not much good.
>>
>>Kerry Cooper
>>Piano Technician
>>Accredited Member: APTTA, PTTGQ
>>brispiano@optushome.com.au
>>
>>>Phillip Ford wrote:
>>>
>>>>I believe that I've come across the patent for the key leveling device
>>>>that was mentioned a few days ago.  The device is essentially a giant
>>>>drop screw through the key just in front of the balance rail pin.  The
>>>>head of the screw rests on the balance rail and is turned to level the
>>key.
>>>>
>>  >>Patent 1,592,778 to L. Perry for Ludwig & Co. on July 13, 1926.
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