Music Trade Review

Issue: 1922 Vol. 74 N. 17

Music Trade Review -- © mbsi.org, arcade-museum.com -- digitized with support from namm.org
8
THE MUSIC TRADE REVIEW
APRIL 29,
1922
JACK NORWORTH'S
B i g g e s t S o n g Hit!
A DESCRIPTION OF THE PALESTR1NA PLAYER ACTION
Some of the New and Exclusive Features Contained in the New Player Action Now Being Put
on the Market by the J. P. Eustis Mfg. Co. Are Herewith Explained in Detail
The development of the player-piano from its
first crude form to the present-day instrument
represents a period of distinct mechanical achieve-
ment, musical possibilities and marked personal
enthusiasm of both the artist and the artisan and
consequently the announcement of still further im-
provement is of intense interest to the industry.
In presenting the Palestrina player action to
the trade the J. P. Eustis Mfg. Co., of Cam-
bridge, Mass., claims a definite forward step in
player action development and backs its claims
with the reputation of its house for genuine ac-
complishments in its field of endeavor during a
business career of approximately a quarter-cen-
tury, each year of which has witnessed a steady
increase in the volume of business transacted. It
is this reputation for a strict adherence to quality
ideals that the J. P. Eustis Mfg. Co. had in mind
in the development of the Palestrina action to a
point where it can be offered with confidence to
the industry.
The Palestrina action, like the Liberty motor
and other mechanical achievements, is not the
product of the mind of one man, but rather the
result of the combined and co-ordinated experi-
ence and efforts of men of wide knowledge in
their respective lines. One of the four has had
thirty-five years' experience in the principles of
pneumatics; another forty years in the fabrica-
tion of metal; the man responsible for the mak-
ing of dies has devoted forty years of his life to
this particular work. A technically trained man
of natural philosophy and physics completes the
creators of the Palestrina action.
To technically describe the action in detail
would involve a maze of words, all of which
could not adequately convey the distinct purpose
of its creation—the perfect reproduction of music.
In order, however, that those interested may have
the opportunity of seeing, hearing and believing,
the J. P. Eustis Mfg. Co. is arranging a series of
demonstrations of the instrument. An interesting
booklet describing the entire mechanical details
has also been prepared by the company. In
demonstrating this action its tempo control and
dynamic force have elicited much praise. The im-
mediate "come back" of the action to a slight
touch on the pedals is a surprise to those first
using it, and particularly pleasing to the one play-
ing it is the facility with which he is able to
interpret his thought in the playing of the roll.
Many exclusive features are to be found. The
theme control is remarkably efficient, allowing
the aria or melody of the composition to be
properly accented irrespective of whether the roll
is specially cut for accent or not.
Mr. Tuner:
No doubt you are frequently called upon to regulate and tune player-
pianos of ancient construction and with very unsatisfactory results.
We believe you could, in many cases, interest the owner in a new player
action to be installed by you in his piano and at a very moderate expense.
We can make an action that will fit any scale of piano, if you supply
the measurements on a printed form we could send you, and it would come
to you in such shape that it would be easy for you to install it in the piano,
probably in two or three hours at most.
The price for the actions and the profit you could make on the work
would be very attractive to you.
If you are interested, we should be glad to give you further information,
with prices and terms.
SIMPLEX PLAYER ACTION CO.
Worcester, Mass.
The transposing device, operated by a lever,
allows a variance of five keys. It is built upon
the principles of a bar within a bar, the speak-
ing tubes and tempo scale remaining stationary
and the rest of the tracker box sliding. Thus
transposing is accomplished without throwing out
other controlling devices. This is one of the ex-
clusive features of the Palestrina. Another is the
automatic tracking device, which is independent
of the valve control and is almost human in its
action, correcting immediately the slightest vari-
ance of the roll.
An even pull of the roll (differing from the old
condition of light tension at the beginning to the
heavy tension at the end) has been made possible
and absolutely sure through the use of a com-
pensating brake acting directly upon the roll.
While wood is only used in the bellows and
pneumatics the Palestrina is not marketed on the
basis of its being a metal action. First and fore-
most it is a playing device and in the accom-
plishment of this purpose the best materials for
each specific purpose are used. After thoroughly
and exhaustively studying the subject the creators
of this action have decided that, with the excep-
tion of the two places before mentioned, metal
is the most desirable. In its construction, there-
fore, seven distinct metals are used and it is
pointed out there is not an inch of lead, rubber or
fabric tubing in its construction. It is further
claimed that it is impossible for any of its parts
to swell, shrink, absorb moisture or leak and in
its construction is found the master workmanship
of the metal artisan. The joining of every metal
part has been given the utmost thought and con-
sideration and is either silver soldered, welded,
brazed or sweated together.
The valves, easily accessible, are complete in
themselves and the construction is so standard-
ized throughout that every part is interchange-
able. The action is produced in three units and
installed with the utmost simplicity. It is also so
designed that it does not blanket or obstruct the
tone of the piano and allows the tuning of the
piano itself and repairing of piano strings to be
accomplished without the removal of the action.
In a visit to the immense plant of the J. P.
Eustis Mfg. Co., of Cambridge, Mass., it is pos-
sible to better appreciate the perfection of its
production and the exacting care with which
each part, both major and minor, of the Palestrina
is made. Under this one capacious roof the action
is constructed in its entirety. Not only is the
plant efficiently laid out from the basement to the
roof-, but each department is equipped with the
most modern machinery for the purpose. While
expert workmen are employed in all processes
the machines are so simple and efficient and the
tools and dies are so exact that the production
of the instrument does not rely on the often un-
certain human equation.
The Palestrina has been many years in devel-
opment before its initial offering and, in view of
the business stability and standing of the house
back of the product, the prospects for that action
becoming a permanent factor in the trade are most
assuring.
Music Trade Review -- © mbsi.org, arcade-museum.com -- digitized with support from namm.org
APRIL 29,
1922
THE MUSIC TRADE
REVIEW
9
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The Problems Involved in Providing for the Various Pressure Levels Which
Are Necessary in the Operation of the Reproducing Piano Have Engaged the
Attention of Pneumatic Engineers for Years—Some of the Systems in Use
The problem of attaining the different pressure
levels which are needed for the practical work of
reproducing piano playing in the automatic-ex-
pression or reproducing types of player-pianos
has engaged the attention of many inventors dur-
ing the last ten years. In consequence a multi-
tude of devices for this purpose has been brought
into existence, some of which, of course, are much
better than others. The principle on which they
depend is, of course, the same in all cases, but
its application may, in the practical sense of the
term, be extremely varied. It will be interesting
to examine some of these.
Definition of Pressure Level
The general problem, of course, is simply that
of producing needed pressure levels at will and
according to some scheme deduced from the re-
quirements of a given piece of music. A pressure
level may be defined as the relation at any mo-
ment existing between the pressure of the atmos-
phere and the pressure of air inside a player
action. The difference between this outside fixed
pressure and the pressure inside is obtained by
withdrawing from the inside some part of its
air. If air is simultaneously entering the action
it becomes necessary to assure that more air
will be in process of withdrawal than can enter,
or, more accurately, that the rate of withdrawal
shall be greater than the rate of entry. This can
be assured by the use of suitable suction bellows
or fans, whose capacity is greater than that of
all sources of leakage combined.
The Ratio of Pressure
Now, upon the relation between the rate of
withdrawal and the rate of inleak will depend
the relation between the inside pressure and the
pressure outside. Therefore, changes in pressure
level might be brought about by causing changes
in the rate of motion of the suction machinery.
This, however, would be a very clumsy and in-
effective method. Much simpler, more efficient
and generally more practical is the simple method
of changing the area of the passageway through
which the air must flow in process of withdrawal.
The Suspended Valve Method
Suppose that in such a passageway a turn is
made, to provide a short vertical chamber. Let
this chamber be provided with a floor in which
is bored a hole communicating with the player
action. At the other end, or near the roof, of
this chamber let a hole of the same size be bored
in the wall. If now a valve is suspended so that
it can rest right in contact with the hole in the
floor of the chamber, or be raised above it, as
required, then plainly means will have been pro-
duced for effectively modifying the area of the
passageway through which the air passes from
action to bellows. For if the valve be placed so
as nearly to touch the upper surface of the hole
then no matter how powerfully the suction ma-
chinery may work no more air can pass through
from the action than can find its way out through
the narrow space between valve and hole.
The suction machinery might, indeed, be speed-
ed up, which would have the effect of bringing out
a larger quantity of air from the action by in-
creasing the difference between the reduced and
the atmospheric pressures. But this process could
be compensated by the simple device of a gov-
ernor controlled by the pressure itself.
In one very practical method, then, the re-
quired changes in working pressure are to be
considered as produced by mechanism which will
cause a valve to be brought into various posi-
tions with relation to a hole. Let us consider
how this may conveniently be worked out, with
the kind of pneumatic mechanism which is avail-
able in a player action.
The Question of How Many Positions
The first question which will be asked is, of
course: "How many different positions of the
valve must there be?" The answer is that there
cannot in effect be too many such positions, but
in practice their number may be limited. Let us
suppose, for the sake of example, that four such
positions are considered to be sufficient for the
purpose aimed at. Then there are several ways
in which these positions of the valve may be at-
tained. Imagine, for one of such ways, that the
valve is suspended upon a rod, at the other end
of which is pivoted loosely a fulcrumed lever. On
the other side of the fulcrum let there be four
pneumatics, arranged side by side. Let each pneu-
matic correspond with a perforation in the mar-
gin of the tracker bar. Between each such per-
(Continued on page 10)
Pratt Read Player Actions
"built to play"
MODEL A
for high-priced pianos
10-point motor
Transposer
Pedal throwout
Automatic tracker
Automatic hammer rail
Automatic pedal
Silencer
Soft bass and treble buttons
MODEL F
for moderate-priced pianos
Automatic tracker
6-point motor
Covered metal tubing
Simplified bellows
Sustaining pedal lever
Soft bass and treble levers
Materials and Workmanship Guaranteed
Over 48,000 in Use. Worth Trying!
The Pratt Read Player Action Co.
Main Office and Factory, Deep River, Conn.
Foreign Office, 21, Mincing Lane, London.

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