[ Ref. David Dewey in 150612 MMDigest ]

Here are three pictures of a Kimball damper plate I found in my stock.
It looks like someone drilled a hole in a regular plate and soldered
in a spring.

John Dewey

 [ Kimball damper plate
 [ http://www.mmdigest.com/Attachments/15/06/15/150615_135324_IMG_3290.JPG
 

 [ Kimball damper plate
 [ http://www.mmdigest.com/Attachments/15/06/15/150615_135324_IMG_3288.JPG
 

 [ Kimball damper plate
 [ http://www.mmdigest.com/Attachments/15/06/15/150615_135324_IMG_3287.JPG