Improvements in or relating to Pneumatic Actions for Mechanical Organs or the like.
Year: 1898

page_text: Improvements in or relating to Pneumatic Actions for Mechanical
Organs or the like.
I, ANSELME GAVIOLI, of 2bis, Avenue de Taillebourg, Paris, in the Republic of
France, Organ Manufacturer, do hereby declare the nature of this invention
1o be as follows:-
This invention relates to an improved pneumatic action for mechanical organs
in which intermediary wind chests are arranged in groups of two or three under the
perforated music sheets of mechanical organs for transmitting the movement of the
fingers operated by the music sheet to the valves of the principal wind chest of
the organ so as to diminish the hardness of the touch.
The intermediary wind chests are mounted immediately below the fingers and
are so arranged that any dirt or other matter falling through the perforated
music sheet during the working of the organ cannot penetrate into the compart-
ments of these wind boxes.
The intermediary wind boxes in groups of two or three can be arranged side by
side or one over the other or in any convenient manner crossways to the travelling
direction of the perforated music sheet.
The wind boxes each consist of a longitudinal air chamber in connection with
the blowing apparatus and of separate lower compartments which are each con-
nected by a pipe or the like to the valves of the principal wind chest.
The upper part of each wind box has no openings of any kind nor are there any
parts placed thereon which allows them to be placed close to the fingers operated
by the passage of the music sheet and also prevents dirt, etc. entering the com-
partments. On the lower faces of the wind boxes are levers hinged thereto and
forming valves intercepting when closed the communication of the lower compart-
ments with the air, the end opposite the hinge of each of these is arranged a
vertical rod on the top which the fingers rest. These levers are held in the closed
position by means of springs.
The communication between the air chambers and the lower compartments is
operated by means of flap or hinged valves, under the action of springs and con-
nected with the corresponding lever valves by means of a rod which is of
such length that when the flap valve is closed the lever valve is opened
and vice versa.
Each time that a perforation of the music paper comes over the point of one of
the fingers the same rises and the corresponding lever valve is closed and the Hap
valve is opened whereon the air in the upper compartment passes to the respective
lower one and is carried from there to the corresponding valve of the principal
wind chest and the air passes from this chest to the corresponding sound pipe.
Dated this 21st day of June 1898.
HERBERT HADDAN & Co.,
Agents to Applicant.

page_text: Improvements in or relating to Pneumatic Actions for Mechanical
Organs or the like.
I, ANSELME GAVIOLI, of 2b, Avenue de Taillebourg, Paris, in the Republic of
France, Organ 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:-
This invention relates to an improved pneumatic action for mechanical organs
or the like in which intermediary wind chests are arranged in groups or numbers
of two or three under the perforated music sheets or key boards of mechanical
organs for transmitting the movement of the keys or fingers operated by the music
sheet to the valves of the principal wind chest of the organ so as to diminish the
hardness of the touch.
The intermediary wind chests are mounted immediately below the fingers and
are so arranged that any dirt or other matter falling through or from the under
side of the perforated music sheet during the working of the organ cannot penetrate
into the compartments of these wind boxes.
The intermediary wind boxes in groups or numbers of two or three can be
arranged side by side or one over the other or in any convenient manner crossways
to the travelling direction of the perforated music sheet.
In the annexed drawing: --Fig. 1 is a partial sectional elevation of an organ with
three of these wind chests arranged one above the other. Fig. 2 is a similar view
of an organ with the wind chests arranged in a different manner Figs. 3 and 4
show in plan the arrangement of the hinged flap valves as arranged in Figs. 1 and 2
respectively.
The wind chests ABC comprise longitudinal air chambers f f¹ and f² in con-
nection with the blowing apparatus and a series of transversal parallel separate
compartments mm² and m² each connected by a passage or pipe o to the corre-
sponding valve chamber of the principal wind chest of the organ.
The upper part of each wind chest ABC has no openings of any kind nor are
there any parts or upward projections arranged thereon which allows the upper
wind chest to be placed very close to the keys or fingers T of the key board. By
this construction it is impossible for any dust or dirt falling under the small
board b which supports the perforated music sheets to enter into the compartments.
On the lower faces of the wind chests, levers 7 and 12 are arranged hinged
thereto and which form valves and intercept when they are lifted, the communica-
tion between the compartments m m and m² of the wind chests, and the atmosphere.
These levers are each provided with a vertical rod ppp fixed thereto and on
the upper ends of which the respective keys or fingers T lie.
These levers are subjected to the constant action of the antagonistic springs
or arranged under the wind chests.
The communication between the compartments mm² and m² with the correspond-
ing air chamber fflor fis governed by the valves gg and respectively arranged
in these air chambers. These valves g² and are under the action of
springs rror and are connected with the corresponding lever valves 11 or 12 by
rods h¹ and h2 which have such length that the valves are opened when the
valves are closed and vice versa.
Each compartment mm² or m² of the wind chests communicates by a passage or
pipe o with a pocket or bellows of the principal wind chest of the organ which is
operated immediately the one of the valves gg² g² is opened and the compressed air
of the principal wind chest passes into the corresponding organ pipe.
The apertures of the compartments mm² m² are arranged alternately. Also the

page_text: rods are preferably arranged alternately in three series which allows the
keys or fingers T which rest on these different rods to be arranged close together.
In Fig. 3 this arrangement is shown in alternation in three series. In Fig. 4
the rods are in series of two only in this case the keys cannot be arranged so
close together.
Each time a perforation of the travelling perforated paper comes over the
respective point T₁ of a key or finger this key is lifted by its spring and the corre-
sponding lever Prises and opens the corresponding valve or g2: the com-
pressed air in chamber f for then enters the respective compartment m m' or m³
and passes through the passage or pipe to the pocket or bellows which opens the
corresponding valve of the principal wind chest of the organ and the air passes
from this wind chest to the corresponding organ pipe.
When the music sheet presents a solid part to the point of the key, the latter
is moved down the valve is closed whilst the corresponding lever puts the
compartment m of its wind chest in communication with the atmosphere and lets
the air escape which has swelled the pockets or hellows of the principal wind
chest, the compressed air thus ceases to pass to the organ pipe.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed I declare that what
I claim is:
1. An improved pneumatic action for mechanical organs or the like having
perforated music sheets consisting of the arrangement of intermediary wind
chests ABC having respectively longitudinal wind chambers ff or f² connected
with the blowing apparatus, and a series of transverse parallel compartments mm
or m³, these wind chests ABC carrying on their lower faces lever valves and P
which are under the action of the keys or fingers T of the key board and also of
antagonistic springs nnn² operating on their under sides such construction being
for the purpose of allowing the fixing of these wind chests immediately under the
keys of the key board and to allow their upper faces to be entirely solid in order
to prevent the entrance of dust or dirt falling down into the compartments of the
said wind chests from the under side of or through the perforated music sheets
during their travel.
2. An improved pneumatic action for mechanical organs or the like with per-
forated music sheets as in Claim 1 in which three intermediary wind chests ABC
are superposed, the upper wind chest A being arranged immediately under the
keys or fingers T of the key board substantially as described and shown in Fig. 1 of
the annexed drawing:-
3. An improved pneumatic action for mechanical organs or the like with
perforated music sheets as in Claim 1 in which three intermediary wind chests ABC
are arranged of which two A and B are superposed the upper one of which is
arranged immediately under the key board and the third Carranged opposite and
at the height of one of the two first above mentioned substantially as described and
illustrated in Fig. 2 of the annexed drawing.
1000
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, London.