Restoration of a player piano that
is also an orchestrian for the Dahl family of McKinney Texas
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131)
132)
133) 
131) This shows the sound board all glued into the piano.
132) Floating the plate. The plate height is being determined here. Some
clamps are being used to "pre-compress" the board. This will simulate the
height of the bridges after the strings are in place and are pressing down on them.
In this way, it is easier to get an accurate setting for the plate height.
133) Two maple strips are being glued to the sound board. The bottom strip
will hold the plate at the correct height at that end. The pin block holds the plate
at the top but there is a maple strip that belongs here as well. The plate presses
on this strip and thus onto the board. This will serve to add firmness to the
connection of the board at this point. This is particularly useful in the high
treble area. The more rigidly the board is retained in this area the better the high
treble will sound.
134)
135)
136) 
134) The plate is now in and ready for the stringing felts to be installed.
The board will be pre-compressed again so that any final adjustments that may be useful
can be made by changing the thickness of the felt.
135) Stringing the piano.
136) All the treble wire is in place. The piano has been put up on its feet
again to make room for other tasks since the bass strings had not yet come in at the time
this picture was taken.
137)
138)
139) 
137) The bass strings are no in place along with all the other felts that are placed
on the "dead" string segments to keep these untuned segments from ringing.
138) The closer to the floor that the various glue joints of this piano were, the
worse their condition. This is the bottom board of the piano and it shows some of
the worst damage of all. This board was made of numerous strips of wood glued
together into a wider board. All these strips were coming unglued from each other as
can be seen in this photo.
139) A new board has been made and all the hardware and screw holes duplicated on
it. The new board is made of high grade plywood with premium birch veneer. It
holds screws beautifully and will serve well in this piano for a century without going
bad.
140)
141)
142) 
140) The new bottom board has been installed. You can see in this
picture that the pedals have been polished and the pedal felt has been replaced as well.
141) This shows lacquer on one of the boards on the piano being rubbed with the
rubbing machine.
142) The keybed and the legs along with all the side boards on the bottom and on the
cheeks of the keyboard area have been reinstalled.
143)
144)
145) 
143) The action and keysticks have now been installed, the damper felts have been
glued into place and the action regulated.
144) This shows the tubing on the pneumatic stack after being installed. The
tubing that was on the piano when it arrived was still almost new but new tubing was used
anyway since it is sure to last a long time this way.
145) The way the transmission on this unit was set up was backwards of most pianos.
It made it very difficult to get the spool frame to run the paper correctly.
Also, the original spool ends which hold the roll in place were missing when the piano
arrived. New spool ends had to be manufactured and fitted to the piano. The
way the electric motor runs this unit is also exceedingly unusual. It was very hard
to find a belt that would work on it. Finally, it was discovered that a humidifier
replacement belt was perfect for this purpose. Then after much work with the
play/rewind device and various experiments and many, many adjustments it finally became
possible to run a roll through a complete cycle of play, rewind and play again.
Then the entire assembly was tested on the bench using the vacuum gauge pictured at the
left to simulate the lowest possible pressure level that may be present in the system at
any given time. The system was tested for a couple hours on the bench like this
before it was proven that it would work reliably.
146) 
146) Next the pneumatic stack was reinstalled into the
piano.