I recently began a soundboard project on a Schomaker upright piano built in Philadelphia in 1903. This is a very interesting piano. I will note some of it's unique features.
First off, the sides are doweled and held to the back by two large bolts and nuts. There was no glue used. This is wonderful for the rebuilder, as the sides are very easily removed and replaced.
The rim that the soundboard is attached to is a large laminated "U" shaped rim, much like a grand piano rim. The pinblock is mortised into this "rim" and the bottom portion of the pinblock serves as the top liner for the soundboard to be attached.
Instead of back posts, there is a cast "spider" that is lagged to the corners of the rim, and is attached to the bottom side of the pinblock. The plate has a horn much like a grand piano, that comes in contact with the spider.
This piano should rock! It has a strange scale, so should be re-scaled. I'll keep you posted as work progresses.
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