Music Trade Review -- © mbsi.org, arcade-museum.com -- digitized with support from namm.org
THE MUSIC TRADE REVIEW
8
Perfect
The Famous Simplex Trape
the New Sim
E
VERY piano manufacturer to-
day can have a perfect track-
ing device. He can have in
his player-piano the one sure pre-
vention of faulty tracking—the one
invention which overcomes the
player-piano's greatest "variable."
This is the Simplex Trapezoid
Tracker Bar and Roll Adjuster
combined, the one device which
solves tracking troubles at their very
source. We not only control these
important inventions by U. S. pat-
ents and use them in our own
actions, but we are willing that other
manufacturers shall share them
with us.
If you are a piano manufacturer
and make your own actions, you
can buy this device direct. If you
buy your actions, you can have it
by specifying Simplex.
1
F
How the New Simplex Roll Adjuster Works.
Before starting to play, it automatically lines up the center of roll with
center of bar. When roll is inserted, by pushing dutch "B" to the left, said
motion is transmitted to clutch "C," except reversed by the levers and link
"E, F. D," with the result that no matter Jiozv short (shrunken paper) or long
(swollen paper) the music roll may be the center of it is always exactly in
line with the center of the tracker bar. Covered by U. S. Patent 978355,
April 25, 1910.
The simple diagrams in this advertise
ment explain just why and how it is im
possible for the most faultily cut roll, o
one shrunk or swollen though atmosphen
conditions, to go wrong with the Trape
zoid Bar and Roll Adjuster.
Look at the four diagrams of the work
ing of the Simplex Trapezoid Bar. Thi
simple device explains itself. Its grea
effectiveness is not surprising.
SIMPLEX PLAYEI
10 BLACKSTONE SI