Improvements in or relating to Sounding Boards of Pianofortes and the like.
Year: 1897

page_text: Date of Application, 22nd Oct., 1897
Complete Specification Left, 22nd Aug., 1898-Accepted, 1st Oct.,
1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Sounding Boards of Pianofortes and
the like.
I, LOUIS SIMON, of No. 19, Kepler Strasse, Ulm on the Danube, in the Kingdom
of Wurtemberg and German Empire, Pianoforte Manufacturer, do hereby declare
the nature of this invention to be as follows:-
The tone of stringed instruments depends as is well known to a large extent
upon the efficiency of the sounding board.
The object of the present invention consists of an improvement in sounding
boards for pianos and pianinos, whereby the tone is considerably improved and
strengthened. The improvement is constructed as follows:-
Upon the back side of the sounding board metal strips are screwed or otherwise
suitably attached between the fixed ribs which prevent transverse oscillations.
By the application of the said metal strips to the sounding board in this manner
the vibrations of the wires are rendered much more intense and lasting. This
action is principally attributable to the weight of the metal, which fact is con-
firmed by the discovery that by the placing of pieces of lead under the iron of the
middle supports the beauty of the tone is further considerably increased. This
result is not obtainable with wood, and it consequently proves that the sounding
board becomes more sensitive through the weighting of the metal strips whereby
greater vibrations are maintained in the wires. Moreover the advantage is obtained
that the metal strips afford greater resisting power to the sounding board against
the pressure of the wires on the side.
D
00
1000
W. P. THOMPSON & Co.,
Patent Agents for the Applicant,
322, High Holborn, London, W.C.
COMPLETE SPECIFICATION
Improvements in or relating to Sounding Boards of Pianofortes and
the like.
I, LOUIS SIMON, of No. 19, Kepler Strasse, Ulm on the Danube, in the Kingdom
of Wurtemberg and German Empire, Pianoforte Manufacturer, do hereby declare
the nature of this invention, and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
The tone of stringed instruments depends as is well known to a large extent
upon the efficiency of the sounding board.

page_text: The object of the present invention consists of an improvement in sounding
boards for pianos and pianinos, whereby the tone is considerably improved and
strengthened.
In the accompanying drawings:
Figure 1 shews the back view of a sounding board.
Figure 2 shews a section of the same.
Upon the back side of the sounding board a meal strips c are screwed or other-
wise suitably attached between the fixed ribs which prevent transverse oscilla-
tions. By the application of the said metal strips to the sounding board in this
manner the vibrations of the wires are rendered much more intense and lasting.
This action is principally attributable to the weight of the metal, which fact is
confirmed by the discovery that by the placing of pieces of lead under the iron
of the middle supports the beauty of the tone is further considerably increased.
This result is not obtainable with wood, and it consequently proves that the
sounding board becomes more sensitive through the weighting of the metal strips
whereby greater vibrations are maintained in the wires. Moreover, the advantage
is obtained that the metal strips afford greater resisting power to the sounding
board against the pressure of the wires on the side.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
The improved sounding board for pianos and the like, having metal strips such
as c attached between the ribs b for the purpose of improving the tone and also
of strengthening the apparatus, substantially as described and shown.
Dated the Twenty-second day of 1808
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.