Bluthner Patent Action

[Doodles]

According to my extremely faded notes from college decades ago, that action part you are referring to as an "abstract" is called the notch lever and is controlled by the knee spring . The jack is actually called the hopper in this action, which is inherited from the old type upright sticker actions of the 1800's. The term hopper is used when the jack is directly or indirectly attached to the key. The term sticker applies to the wooden rods which connect the hammer shanks to the undercarriages, originally glued with leather hinges, hence the term "stick...er". 

Before you upload a translation, please change your "rolls" to "roles"!!! They have different meanings.

Hope this helps.

AF
  ----- Original Message ----- 
  From: Richard Brekne 
  To: pianotech at ptg.org 
  Sent: Sunday, September 28, 2008 4:09 AM
  Subject: Bluthner Patent Action


      Ric: thanks for moderating this.  However, you credit me with
      calling the abstract a "thingee".  I'm innocent of that, I can
      assure you. :^) BTW, I have looked up abstract and Abstrakte and in
      neither language can I find a reference to anything that relates to
      a mechanical  component or connector...

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