[jacquesm]

I've found it! The 'clue' was that the name contains 'lion' but I still couldn't find it and then suddenly it popped up. Pedalion.

They are fairly big compared to your typical harmonium.

https://www.reedsoc.org/index.php/rosdb/vieworgan?ascnd=1&ID...

They're a funny half breed, they have a blower motor, use reeds instead of pipes, and were popular with churches as practice instruments.

Oh, and this might interest you if you haven't found it yet:

https://www.reedsoc.org/index.php/information/reed-organ-rep...