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41
The Music Trade Review
JUNE 19, 1926
The Technical and Supply Department—(Continued from page 40)
in the tracker-bar normally used for operating trolled by the note sheet for regulating the tem-
New Music Patents
the playing devices, which will immediately ter- po throughout the playing of each individual se-
D. C, June 11.—Albert A. Huse-
by, Chicago, 111., was last week granted patent
No. 1,586,746 for a pneumatic striker action for
player-pianos. This invention relates to pneu-
matic striker actions for player-pianos and other
self-playing musical instruments, and has for its
general object to simplify the construction, re-
duce the number of parts and consequently the
liability of leakage, lessen the cost of manufac-
ture, and reduce the space required by the struc-
ture. Other more specific objects are to pro-
vide an improved semi-unit action which will
facilitate the making of repairs and renewals, to
provide an improved construction of valve board
which will contain not only the valve chambers
and valves but also the air .channel, to provide an
improved striker pneumatic unit that may be
removably attached to the under side of the
valve board and shall contain in its stationary
side the usual valve motor diaphragm or pouch
and the pressure and vacuum ducts thereto from
the tracker range tube and the air channel re-
spectively, to provide an improved closing strip
for the air channel, and to provide an improved
bleed vent for the under side of the valve pouch.
WASHINGTON,
Patent No. 1,587,204, for a mechanical musical
instrument, was last week granted to Grant
Whitehouse, New York, N. Y., which he has as-
signed to Weser Bros., Inc., same place. This
invention relates generally to pneumatically
operated musical instruments, such as player-
pianos, organs and other musical instruments of
the well-known type in which a perforated mu-
sic-sheet is caused to travel over a tracker-bar
formed with a series of air-ducts connected with
the playing devices, and the improvements re-
late particularly to the music-sheet winding and
rewinding mechanism by which the instrument
is operatively controlled, and with novel devices
controlled by the position of the music-sheet on
the tracker bar for terminating the operation
of such rewinding mechanism.
The objects of the invention are, among other
things, chiefly to provide a simple, efficient and
automatic means connected with any selected
one of the customary note-controlling air-ducts
minate the operation of the motor for rewinding
when the sheet has traveled backwardly off the
tracker, thereby avoiding, among other things,
the undesirable slapping noise caused by the
rapid revolution of the forward end of the mu-
sic-sheet against the tracker box after such end
has become disengaged from the catch in the
take-up roll. Heretofore it has been proposed '
to use special air-ducts in the tracker to control
such winding and rewinding mechanism usually
cut outside the range of the 88 notes, or to
block off and use exclusively for such control
one of the 88-note music-ducts, generally one
of the outside ducts.
lection, the means operating to set the tempo
initially and also to accelerate or retard the
speed of playing from time to time as may be
called for by the particular selection.
An important and more specific object is the
provision of a tempo regulating device which
acts upon the pneumatic governors which con-
trol the speed of the motor.
Another object is the provision of a control
device of this character which will be compara-
tively simple and inexpensive in manufacture,
which involves but a few parts, and which is
capable of installation upon player-pianos of
different makes.
Daniel Boone and Daniel Sevier, Muskogee,
Okla., were recently granted Patent No. 1,587,-
365 for a player-piano. This invention relates to
improvements in player-piano mechanism and
has for its object the provision of means con-
Patent No. 1,587,424 for an automatic cleaner
and brake for player-pianos was last week
granted to John T. Rydberg, Harrison, N. J.,
which he has assigned to the Supreme Player-
Action Corp., same place.
U
Piano Playing
Mechanisms
By William Braid White
A textbook dealing with the Technical and Practical
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Their Construction, Design and Repair.
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Table of Contents
"PIANO PLAYING
MECHANISMS"
Preface
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Chapter III. Dimensions and
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Chapter IV. Automatic Power
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Chapter V The Reproducing
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Chapter VI. The Coin-Oper-
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Chapter VII. Repair and Main-
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List of Illustrations
Index
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New York City
383 Madison Avenue, New York
Enclosed find $3.00—check—money order—cash—for which you will please
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Name .
5T7ffT
Address