I think the US Patents database has been reorganized somehow.  "Patent
569233" yields a Westinghouse steam turbine, which I suspect isn't
what you wanted.  But if you go to the 'full pages' selection in the
US Patent and Trademark Office's website, that number gives you this
music box with a vertical disk:

http://pdfpiw.uspto.gov/.piw?Docid=569233

Prior to the Internet you had to do a manual microfilm search at one
of several patent repositories.  I tried it at the Carnegie Library in
Pittsburgh once, and you had to go through sort of a training procedure
to use the system at all.  But it worked, finally, and I discovered
that (1) someone else had tried my electric piano idea and (2) it was
a rotten idea, for a later patent revealed that he hadn't any better
luck with high notes than I did!

Prior to the microfilms you could only do a paper patent search in
Washington, DC, and for that you had to be a patent attorney or
something similar.

Mark Kinsler - boy inventor