Hi All,  A gentleman in Eugene, Oregon, sent me a couple of pictures
of a Duo-Art "steamboat" pump that is unlike any I have seen before.
It has only two 'leather' belts that drive the bellows crankshaft and
two leather belts from the electric motor to the main drive pulley.

But what's really odd is the pulley that is driven by the electric
motor.  The pulley is hexagonal.  It appears to be made out of pot
metal and it is disintegrating, therefore the gentleman would like to
find a replacement part if one is available.  If you have any leads
on this part, please contact me at: john@player-care.com.geentroep
[delete ".geentroep" to reply]

Musically,
John A Tuttle
Player-Care.com
Brick, New Jersey, USA

 [ Martin Model & Patterns in Portland, Oregon, can replicate
 [ the pulleys in cast iron; see Mike Schoeppner's article at
 [ http://www.mmdigest.com/Archives/Digests/201011/2010.11.24.07.html 
 [ -- Robbie