IMPROVEMENTS IN THE PNEUMATIC ACTION OF ORGANS
Year: 1886

page_text: Date of Application, 25th Sept., 1886.
Complete Left, 23rd July, 1887.
Complete Accepted, 25th Sept., 1887
I, CHARLES BRINDLEY of Columbia Place, Suffolk Road, Sheffield in the County of
York Organ Builder do hereby declare the nature of my said invention for
IMPROVEMENTS IN THE PNEUMATIC ACTION OF ORGANS to be as follows:-
The object of this invention is to simplify and otherwise improve the pneumatic
mechanism applied to Organs, and described in my previous Patent No. 4386, 1885,
and relates to the soundboard, the pneumatic motor lift, the wind supply valve, and
the speed power valve.
In carrying out my invention, the soundboard will consist of three parts, namely
the bottom-boards, the wind-bars, and the upper-boards; these when frained together
form wind channels.
The wind is supplied to speaking pipes as follows; a wind passage is made
vertically and then horizontally in the bottom board, communicating with a vertical
passage in the wind-bar, which extends through the upper-board; at the termination
of this passage is placed the speaking pipe.
The wind supply to the said wind passage is controlled by a
"Channel valve,”
seated on the bottom-board over the mouth of the wind passage. Each note has its
wind passage and channel-valve, the said valves being worked by means of a
pneumatic motor lift.
The pneumatic motor Lift, consists of a bar placed under the projecting lower
ends of the spindles or rods of the "Channel-valves," and is raised by means of a
series of small bellows; the bar in rising comes in contact with and lifts the
channel valves. The wind is supplied to the before mentioned bellows by means
of a "motor supply valve " in connection with a "speed power valve" the province
of the latter being to supply fresh wind to the "motor supply valve "
cause the pneumatic motor lift to work promptly. The necessity for this valve is.
caused by the wind becoming attenuated in its passage from its source, so that
delay is caused by its having to accumulate power. This wind has sufficient force
to work an abnormally small valve, (such as my speed power valve) with quickness
and certainty.
so as to

page_text: The function of the wind-supply-valve is to supply wind for the speaking pipes.
The valve consists of two movable parts, and is placed in a wind box placed above
and resting upon the soundboard, which is fed from the bellows or reservoir. The
valve is raised as follows; first premising that it consists as before mentioned of
two parts, the lower part being a plate with a central hole, the upper part being
a smaller plate covering the centre hole in the lower plate, and having a short
vertical movement upon two or more headed pins fixed in the lower disc.
The valve rod is connected to the top disc and passes down through the bottom
board, projecting below a sufficient distance for the required movement, immediately
above a bellows, which is operated by wind admitted through the action of a draw-
knob at the console, which when pulled raises a weight valve, and admits wind
through a connecting air tube.
When the valve rod is raised, it first lifts the upper small disc, thus reducing
the pressure upon the lower disc (or valve proper) which at once ascends giving
free passage to the wind into the soundboard channels.
ROBT. F. DRURY,
Agent for the Applicant.

page_text: In carrying out my invention, the soundboard will consist of three parts, namely,
the bottom boards A, the wind bars B, and upper boards C, these when framed together
form the wind-channels D.
The wind is supplied to the speaking pipes E, as follows, a wind passage F, is
made vertically and then horizontally in the board A, communicating with a vertical
passage in the wind bar B, which extends through the upper board C; at the termination
of this passage F, is placed the speaking pipe.
The wind supply to the said wind passage is controlled by a channel valve G,
seated on the bottom board A, over the mouth of the wind passage F. Each note
has its wind passage and channel valve, the said valves being worked by means of a
pneumatic motor lift H, Fig. 2.
The Pneumatic Motor lift consists of a bar I, placed under the projecting lower
ends of the spindles or rods of the channel valves G, and is raised by means of a
series of small bellows J; the bar I in rising, comes in contact with and lifts the
channel valves, thereby admitting air from the wind channels D, into the passages F.
The wind is supplied to the before mentioned bellows, by means of a motor supply
valve K, in connection with a speed power valve L, the province of the latter being
to supply fresh wind to the motor supply valve K, so as to cause the pneumatic motor
lift to work promptly. The necessity for this valve, is caused by the fact of the wind
becoming attenuated in its passage, from its source, so that delay would otherwise be
caused by it having to accumulate power.
This wind has sufficient force to work an abnormally small valve, (such as my speed
power valve) with rapidity and certainty.
The functions of the wind supply valve Fig. 3 M, is to supply wind for the speaking
pipes; the valve consists of two movable parts m¹ and m², and is placed in a wind
box N, fixed above, but resting upon the sound board, which is fed from the bellows
or reservoir.
The valve as before stated consists of two movable parts, the lower part m² being a
plate with a central aperture, and having a vertical movement upon guides 0; the
upper part m' is a smaller plate constructed to cover the said central aperture in the
lower plate, from which it is capable of being raised a short distance vertically by
the action of the valve rod P, and thus relieve the pressure upon the valve proper m³.
The valve rod P, is connected to the top plate m¹ and passes down through the
bottom board, projecting below a sufficient distance for the required movement, and
immediately above a bellows shown in Fig. 4, which is operated by wind admitted by
the action of a drawknob, such as Q in Fig. 1 at the console, which when pulled
raises a weight valve R, Fig. 7 and admits wind through a connecting air tube S.
(W, W, are the exhaust valves.)
When the valve rod is raised, it lifts first the upper or small plate m³, and thus
reduces the pressure upon the lower and larger plate m² which it next raises by the
collar T, coming in contact with the boss of a crossbar U, and thus permits free
entrance for the wind into the sound board channels.
The wind in the various channels marked Y, is supplied by means of ordinary wind
trunks or branches of same direct from the bellows, or wind reservoirs.
The wind chaunels marked Z in Figs. 1 and 5, have wind admitted to them only
when required, from the wind trunks, by the action of drawstops at the console opening
communicating valves such as are shown in Fig. 3.
It is to be understood that the wind which raises the valves K & L, Figs. 1 & 2,
cannot escape as the openings underneath the lifting buttons are closed by means of
an elastic or flexible diaphragın shown by a single line and marked d, which rises and
falls as wind is admitted or exhausted.
In Fig. 5, I show the arrangement of the pneumatic motor lift to admit wind to the
speed power valve under the wind chest.
The lower portion of this figure is an auxiliary motor lift in connection with the
pedal box Fig. 8, the top portion being in connection with the key box Fig. 6. The
principle is the same as described in relation to Fig. 2; the wind from either the
key box or the pedal box, when permitted, passes into corresponding bellows to those

page_text: .
marked J in Fig. 2, lifts the board above them and raises the spindles of the valves
which rest upon the board.
X, X, are double acting flap valves which will admit wind from either one or the
other of two wind passages, and will at the same time automatically close the other
passage so as to prevent escape, or back pressure.
They are constructed with a tongue of leather or other suitable material, held in
the narrow end of a V shaped opening crossing both the air passages, (the leather
tongue is indicated by the centre line) thus when the wind rushes from either passage,
it forces the leather tongue against and closes the opposite opening, and vice versa.
The construction of the Pedal box will be readily seen and understood, (a) is the
pallet, (b) the closed air passage, (c) a sticker loosely held in the exhaust opening, and
(d) is a flat metallic spring pallet, capable of pressing down the sticker and closing
the exhaust when the pallet a is drawn down and the wind passage (b) is opened.
In the key box, Fig. 6, (e) is a metallic spring pallet with a leather or felt
block (f) covering the wind passage g, h is a short sticker, which keeps open the
exhaust i, until the pallet e, is raised, when the exhaust is immediately closed.
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 :-
1-The improved construction and arrangement of the pneumatic mechanism of
Organs, substantially as herein before described and illustrated.
2-In Organs built on the pneumatic principle, the construction and arrangement of
the pneumatic "motor lift," for the purpose specified and substantially as hereinbefore
described and shown in Figs. 2 and 5.
3-In Organs built on the pneumatic principle, the construction of the "sound
board" and valves connected thereto, substantially as described, and shown in Fig. 2.
4-In Organs on the pneumatic principle, the "speed power valve" L, in combi-
nation with the valve K, or like valves, for the purpose specified, and substantially as
described, and shown in Fig. 2.
5-In Organs on the pneumatic principle, the construction of the "wind supply
valve" substantially as hereinbefore described, and as illustrated in figures 3 and 4.
6-In Organs on the pneumatic principle, the construction of the "double acting
flap valves "X for the purpose specified and substantially as described and shown.
7-In Organs on the pneumatic principle the " metallic spring Pallet," substantially
as described and shown in Figs. 6 and 8.
Dated the 22nd day of July 1887.