Glen Deutsch inquired about a Simplex Piano Player.  I have one.

I found it in a beat up old flea market stall in San Jose 15 years ago.
It was in original unrestored condition when found, all intact except
for the curved glass on the rollbox cover.  I made a new curved piece
by heating plastic with a hair dryer while bending it in a vise.  It's
a beautiful piece, with flame red mahogany.  I don't have any
literature on it, except I've seen clips of ads featuring this piece
in some of the encyclopedias and player piano treasuries.  Mine was
made in 1901 (well, patented in 1901 anyway), and has the original
decals still intact.  It has a lever on the front, which actuates
linkages to actuate the loud pedal on the piano.  You operate it
manually.  A crank on the front panel winds the spring motor.

The restoration was straightforward.  It has a spring motor to
run the roll, and the bellows play the notes.  The valves are
weird.  Just square pieces of thin wood covered by leather on
both sides (if I remember correctly).  It works, but it's not
very practical, because the vorsetzer has a metal bracket which
is intended to attach to a mating bracket on the piano it is to
play.  I have only the vorsetzer side of the bracket.  So it's
extremely difficult to hold it in place to try to play the
piano.  But it's a very interesting piece to have, display, and
discuss.  Oh, yeah.  I have yet to find a Simplex roll for this
piano.  In those days, apparently every manufacturer made his
own rolls.  I have dozens of 65 note rolls, and only one fits.
It works but it's not right.

Another interesting feature of the Simplex Push-up.  The tracker
bar is made entirely of wood.  I know this because, not being
very smart, I had elected to soak the tubing nipples in a half
inch of water to soften up the old petrified grey tracker bar
tubing.  This did work, but unfortunately during the soak, the
tracker bar fell over, and the water loosened up the glue and
the tracker bar came apart!  That cost me about one full day to
recover.

D. L. Bullock Piano World inquired if the pneumatics are a screw
on type.  I haven't been in there for 15 years, but I don't
think so.  I think they're just glued on in the standard
fashion.

Glen, if I can be of any assistance, please let me know.  I'm
located in Morgan Hill, California.

Ray Fairfield