This is a picture of the Hickman model action that is part of the PTG museum collection. Anyone interesting in how this action works can contact me by email -- I have an MS Word document with an analysis by Richard Vance that goes into some detail. I also have a collection of drawings showing the action at different stages of its operation.
ddf
------------------------------
[Delwin D] Fandrich] [RPT]
[Piano Design & Manufacturing Consultant]
[Fandrich Piano Co., Inc.]
[Olympia] [WA]
[360-515-0119]
------------------------------