Stwy B boards

[Erwinspiano@aol.com]

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   Perhaps a point of interest.
   I'm currently putting boards in 2 Stwy Bs. One is a 20's piano & the other 
an 1895ish.  Any one who has looked at the bottom of the B has seen no cut 
off bar but some amount of ribs that are whittled done significantly in the bass 
corner with a flat maple stick running between them. It has printed on it 
pulsator bar. patent 1878. No one has ever been able to explain what the thing is 
for & in my mind promotes a significant loss of stiffness.
   I've always wondered what it was really for but in my mind it is useless. 
for any reason I can see or hear. Oddly the older board had 14 ribs with the 
extra one in the treble end, It had only 3 whittled down ribs & appeared to me 
from a design point of view the stiffer idea. The 20's one had 5!! ribs 
whittled down with only 13 ribs total. I suspect this board has been flat a really 
looonngg time.
   The 1911 B & it's board I just sold & delivered was made without the 
whittled down ribs. I ran the ribs full length to the bass corner with the usual 
scallop. I have to say the sound was as good as any I've ever heard & am 
convinced the extra crown support is far more important than the devices purpose 
which is unknown & apparently unheard.
  Cheers
    Dale
  

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