triple tambour Madrid 91v

Reconstruction  In progress

Madrid Codex, folio 91v

Triple mechanical drum with six sticks actuated by a single toothed cylinder itself actuated by a large toothed wheel. This drawing is clearly theoretical, but lets easily imagine the sound masses that this mechanism will produce by its movement.
It consists
  a large drum with one flap, a medium-sized drum with two flaps, as well as a smaller one with three flaps.
It was
  probably intended for use  scenic.