The U.S Patent 1,404,285 submitted earlier to MMD by Dana Johnson
shows the construction of the Price & Teeple player mechanism described
by Luke Myers.  That patent refers to an earlier patent, no. 1,267,535,
by the same inventor, Charles Freborg.  Attached is a copy of the
earlier patent describing the internal construction of the airmotor
and associated valves in excruciating detail.

It is not surprising that this player action is rare -- it would not
have been cheap to machine the parts for the motor.

Bill Luecht

 [ US001267535.pdf motor for player-pianos
 [ http://www.mmdigest.com/Attachments/16/07/28/160728_180414_US001267535.pdf