Schiedmayer Dominators and Scheolas

Well, I think Niels is right : this system looks very much like a disconnecting device for the celesta. Kind of a clutch.
Not sure it's original (the hinges look a bit new to me, as far as I can see), but that would make sense anyway.

The system is clearly to disconnect the celesta, I don't think I'm making any misinterpretations. But as Frans pointed out correctly this device
was only standard present in harmonium-celesta's with roll player: the grand concertal (Mustel) & Scheola models with celesta (Schiedmayer).
So probably it's not original in my instrument.

Still the mechanism makes sense too on regular harmonium-celesta's: playing harmonium solo on the higher manual, close to the stopknobs.

The grand concertal has indeed 2 stopknobs for this, but as it's celesta appears to have only 4 octaves, the left one will probably only work for c - e (17 notes).
C-H doesn't couple to the lower manual when a 5 octave celesta is present, which used to be the case in my instrument.

List of the dominators and Scheolas updated from 25 to 37:
37 instrument to tell history.

Scheola's with celesta ( 9 ) :



















Scheolas with celesta, ...but temporarily without celesta, pictures taken before celesta was added on top ( 2 ):
notice that the first one is possibly the same instrument as the one pictured above...

The second instrument is lacking many registers although it has a very costly roll player and a celesta, perhaps built for someone who really loved the celesta and player system and
cared less about the harmonium itself.





Dominators with celesta ( 11 ) :























Scheolas without celesta ( 2 ) :





Scheola's with missing Scheola part ( 3 ) :








Dominators without celesta ( 10 ) :