Dean Randall wrote.

> Back in the 70s, Ian McDonald wrote an article for the AMICA Bulletin
> about a Franklin Marque-Ampico from about 1923 that had a very
> differently arranged and constructed, but seemingly functionally
> complete, Ampico mechanism.

I can not remember much of the particular Marque-Ampico in this
instrument, as I sold it over 20 years ago.  I do remember it had
a ratchet-wound spring (wound from the foot bellows), with connecting
drives via a long ladder chain to a gramophone-type governor attached
to the roll drive next to the spool box.  Beware: I had to replicate
pot metal parts!

Ian McDonald