Greetings, all.  Jurgen Goering asked for sources for ladder chain
for a Poppers orchestrion.  I have had good results from two companies,
which both offer superb reference catalogs.  Both list ladder chain
in various pitches:

  Stock Drive Products
  55 South Denton Avenue
  New Hyde Park, NY 11040
  (516)328-3300
  http://sdp-si.com/default.htm
  (This is a superb 'web site!  Check out the free reference CD-ROM.)

  Winfred M. Berg, Inc.
  499 Ocean Avenue
  East Rockaway, L.I., NY  11518
  (516)599-5010

While trying to find 'web sites for these companies, I found an
interesting robotics site listing additional companies:

  http://robotics.com/mechpart.html

Regards,

Pete Woodworth
San Luis Obispo, California (Rain - 65 degrees F.)
http://www.calpoly.edu/~cwoodwor/midi.html