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Ola,
<p>You will no doubt observe that the hammer rest rail is NOT adjustable.
The hammer was not designed to rest on the rail. Rather, the spring
which you removed and then put back must be adjusted until it suspends
the hammer at just the right distance (the most difficult part of the regulation,
and worse than butterfly springs). You will then get double escapement,
which is not possible if the spring is too weak. The spring functions,
in effect, like a repetition lever. Regulation specs are available
from Bluthner. Also search in the archives under "Bluthner patent
action" or just "Bluthner."
<p>Paul S. Larudee, RPT
<br>Richmond, CA
<p>Allan Sutton wrote:
<blockquote TYPE=CITE><style></style>
<font face="Arial"><font size=-1>Very
unusual piano...</font></font><font face="Arial"><font size=-1>I have figured
that the hammer have to REST on its rest.</font></font> <font face="Arial"><font size=-1>Allan
Sutton</font></font>
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<div style="FONT: 10pt arial">----- Original Message -----</div>
<div
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><b>From:</b>
<a href="mailto:pianola@online.no" title="pianola@online.no">Ola Andersson</a></div>
<div style="FONT: 10pt arial"><b>To:</b> <a href="mailto:pianotech@ptg.org" title="pianotech@ptg.org">pianotech@ptg.org</a></div>
<div style="FONT: 10pt arial"><b>Sent:</b> Friday, January 05, 2001 5:14
PM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Bluthner 1916 action</div>
<font face="Arial"><font size=-1>Hi everybody</font></font> <font face="Arial"><font size=-1>I
regulated a Bluthner Grand today from 1916. It has a "one legged spider"
sitting on each jack,</font></font><font face="Arial"><font size=-1>anybody
knows wich one I'm talking about?</font></font> <font face="Arial"><font size=-1>The
only way to regulate the hammer hight and letoff was to remove the springs
in the front.</font></font><font face="Arial"><font size=-1>Afterwards
I put the springs back to regulate the dip.</font></font><font face="Arial"><font size=-1>I
couldn't regulate the hammer height in the bass because the hammers would
break in the pinblock</font></font><font face="Arial"><font size=-1>taking
the action in and out if I raised them so they are still resting on the
Hammer rest.</font></font> <font face="Arial"><font size=-1>I can
remember a discussion of an action like this. Can anybody remember a key
word for the archives?</font></font> <font face="Arial"><font size=-1>Any
comments? Would I done it another way? It's still in the shop so I can
change it.</font></font> <font face="Arial"><font size=-1>Wondering</font></font> <font face="Arial"><font size=-1>Ola
Andersson</font></font></blockquote>
</blockquote>
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