Folding Bellows Corners
By Larry Lobel
Player Piano Company in their catalog recommends the best crease in bellows is _no crease_ at all:
"If the cotton pneumatic cloth is never creased, but instead allowed
to fold naturally by vacuum under a situation where the pneumatic is
prevented from closing by 1/8", the wear life will be increased by
three times.
Most player manufacturers placed a felt punching inside the
pneumatic, just behind the fold, to prevent the hard crease. A few
makers did not do this, and the result was pinholes and slits on the
folds after about ten year's use."
Any other opinions or experiences about this?
Larry Lobel
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(Message sent Sat 22 Feb 1997, 15:41:12 GMT, from time zone GMT-0500.) |
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